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AHK1421 da ta sheet s 2 c controlled, serial led boost driver 1 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 general description the AHK1421 is a highly integrated, high efficiency led backlight solution for portable appliances including mobile phones, smartphones, pdas, pnds etc. the device oper - ates from a single-cell li-ion or polymer battery in the voltage range from 2.7v to 5.5v. an integrated boost (step-up) converter provides up to 28v output for driving up to 6 series leds. in conjunction with an external current setting ballast resistor, the AHK1421 uses a single wire, s 2 c digital interface to adjust the output current and therefore brightness, in 32 linear steps. the boost switching frequency operates at 1mhz to allow optimum efficiency and the smallest external l/c filtering components. integrated protection features protects against, open circuit leds, short circuits and over tem - perature conditions. the AHK1421 is available in a pb-free tsot23-6 package. features? input voltage range: 2.7 to 5.5v ? drives up to 6 series leds at 31ma ? integrated boost converter - 1mhz switching frequency - up to 86% efficiency - internal compensation ? 32 steps - s 2 cwire single wire interface ? shutdown current < 4a ? integrated protection features - over-voltage protection for open-led faults - over temperature protection ? tsot23-6 package applications ? white led backlight - feature phones - smartphones - pdas - pmp - pnds - portable dvd players typical application lx 2.7 - 5.5v AHK1421 fb l = 10h 2.2 f vin gnd 2.2 f en/set s 2 c out d1 discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 2 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 pin descriptions pin # symbol function description 1 lx o switching node of boost converter. connect a 10h inductor between this pin and input voltage source. 2 gnd gnd ground. 3 fb i feedback pin from led ballast resistor. connect a resistor to ground to set the maximum led current. 4 en/set i enable on/off control and s 2 cwire interface input. 5 out o output of boost converter. connect to the anode of the irst led in the series string. 6 vin i input voltage to ic. tied to input voltage source and input boost inductor. pin configuration tsot23-6 (top view) gnd vinout en/set fb lx 12 3 4 5 6 discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 3 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 1. stresses above those listed in absolute maximum ratings may cause permanent damage to the device. functional operation at conditions other than the operating conditions specified is not implied. 2. mounted on an fr4 board. absolute maximum ratings 1 symbol description value units v lx, v out lx or out voltage to gnd 28 v v in, v en/set vin, en/set to gnd voltage -0.3 to 6 v fb fb to gnd voltage -0.3 to vin t j junction operating temperature -40 to 140 c t lead soldering temperature (at leads, 10 sec.) 300 thermal information 2 symbol description value units ja thermal resistance 139 c/w p d maximum power dissipation 0.719 w discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 4 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 1. the AHK1421 is guaranteed to meet performance specification over the C40c to +85c operating temperature range, and is assured by design, characterization and correla - tion with statistical process controls. electrical characteristics 1 v in = 3.6v, c in = 2.2f, c out = 2.2f, l = 10h, r fb = 12.5? (i out = 20ma), t a = -40c to 85c unless otherwise noted. typical values are at t a = 25c. symbol description conditions min typ max units power supply v in input voltage range 2.7 5.5 v v uvlo under voltage lockout threshold v in rising 2.2 2.5 hysteresis 300 mv v fb feedback voltage i led = 20ma 237 250 263 mv i q quiescent supply current no switching, v en/set = 5v 170 600 a i in supply current v en/set = 5v 2.3 ma i shdn input shutdown current v en/set = 0v 4.0 a v ovp over-voltage protection threshold 23 25 27 v r ds(on) on-resistance 650 1000 m? d max maximum duty cycle 90 % f osc oscillator frequency t a = 25c 1.0 mhz s 2 c control: en/set v en/set(l) en/set input low threshold 0.4 v v en/set(h) en/set input high threshold 1.4 v i en/set en/set input leakage current v en/set = 5v, v in = 5v -1 1 a t en/set(low) en/set input low time 0.3 75 s t en/set(hi_min) en/set minimum high time 100 ns t en/set(hi_max) en/set maximum high time 75 s t en/set(off) en/set input off timeout 500 s t en/set(lat) en/set latch timeout 500 s thermal protection t j(sd) thermal shutdown threshold 140 c t j(hys) thermal shutdown hysteresis 15 c discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 5 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 0. 0 0. 8 1. 6 2. 4 3. 2 4. 0 2. 73 .1 3. 53 .9 4. 34 .7 5. 15 .5 85 c 25 c -4 0c shutdown current vs input voltage input voltage (v) i sd (a) 100 120 140 16 0 180 200 220 2. 73 .1 3. 53 .9 4. 34 .7 5. 15 .5 85 c 25 c -4 0c quiescent current vs input voltage input voltage (v) i q (a) 40% 50 % 60% 70% 80 % 90% 100% 04 81 21 62 02 42 83 2 v in = 2.7v v in = 3.0v v in = 3.6v v in = 4.2v v in = 5.0v v in = 5.5v efficiency v s output current (r fb = 8.3, l = 10h, les output current ( efficiency ( 0.90 0.94 0.98 1.02 1.06 1.10 -4 0- 15 10 35 60 85 sw itching frequency vs tempe rature v in = 3.6v, r fb = ., 6s te mp erature frequency 40 0 500 600 70 0 80 0 900 1000 2. 73 .1 3. 53 .9 4. 34 .7 5. 15 .5 - 40c 25c 85c nm os r ds(o n) n vs input voltage input voltage (v) r ds (on) (m) discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 6 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 30.0 30.2 30. 4 30. 6 30. 8 31. 0 -4 0- 15 10 35 60 85 sink c ur rent a ccura cy v s te mperature v in = 3.6v, r fb = 8.3, 6 s te mp erature c current ma 19. 5 19. 7 19. 9 20. 1 20. 3 20. 5 -4 0- 15 10 35 60 85 sink c ur rent a ccurac y vs t emperatur e v in = 3.6v, r fb = 1., 6 s te mp erature c current m a 0.240 0.244 0.248 0.252 0.256 0.260 -4 0- 15 10 35 60 85 feedback v oltage vs t emperature v in = 3.6v, r fb = 12., 6 s te mp erature v fb v 0.240 0.244 0.248 0.252 0.256 0.260 2.7 3. 13 .5 3. 94 .3 4. 75 .1 5.5 feedback voltage vs input voltage input voltage (v) v fb (v) 24. 0 24. 4 24. 8 25. 2 25. 6 26. 0 2. 73 .1 3. 53 .9 4. 34 .7 5. 15 .5 85 c 25 c -4 0c ovp high th reshold voltage vs input voltage input voltage (v ) v ovph (v) 22. 5 22. 9 23. 3 23. 7 24.1 24.5 2. 7 3. 1 3.5 3.9 4. 3 4. 7 5.1 5.5 85 c 25 c -4 0c ovp low th reshold voltage vs input voltage input voltage (v ) v ovpl (v ) discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 7 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 0.4 0.5 0. 6 0. 7 0. 8 0.9 1.0 2. 73 .1 3. 53 .9 4. 34 .7 5. 15 .5 v en h v en l en input high/lo w th reshold voltage vs input voltage input voltage (v ) v en h & v en l (v) 0 0 0 0 operation waveform (v in = 3.6v, c in = 4.7f, c ou t = .f, f = .3, 6 time (00niv i led 20 ma /div v lx 20v/div v out (ac) 50 mv /div i inductor 500m a/di v 0 0 0 0 start up waveform (v in = 3.6v, c in = 2.2f, c ou t = 2.2f, r fb = .3, 6 tm e ( m v i le d 20m a/di v en 2v/div v out 20v/div i in 200 ma /div 0 0 0 0 tu rn off (v in = 3.6v, c in = 2.2f, c ou t = 2.2f, r fb = 8.3, 6 leds ) t (200s) i le d 20 ma /div en2v/div v ou t 20v/di v i in 200 ma /div 0 0 0 0 led current transient (v in = 3.6v, c in = 2.2f, c out = 2.2f, r fb = .3, 2 c ata t 6, 3 t , 6 leds ti e (200si i le d 20m a/di v en/set 5v/div v ou t 20v/di v i in 200m a/di v 0 0 0 0 led current tr ansient (v in = 3.6v, c in = 2.2f, c out = 2.2f, r fb = .3, 2 c ata 6 t , t 3 , 6leds ti e (200si i led 20m a/di v en/set 5v/div v out 20v/div i in 200m a/div discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 8 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 functional block diagram logic / boost control lx vin en/set gnd fb osc. ovp out functional description the AHK1421 is a highly integrated, high efficiency white led backlight solution for mobile phones and all battery operated equipment. the device operates from regulated dc inputs, and single-cell li-ion batteries in the voltage range 2.7v to 4.2v. the integrated boost (step-up) converter provides up to 28v output to drive up to 6 series leds. the led current is set by a single external resistor up to 31ma. s 2 c sin - gle wire interface can enable and disable the ic and adjust the dimming in 32 steps. the AHK1421 is available in a pb-free 6-pin tsot23 package. the over-voltage protection function is designed to pro - tect the boost converter during the fault of the open circuit of the led string. the over-temperature function is targeted to protect the converter if an over-tempera - ture fault occurs. soft start / enable the AHK1421 is enabled by en/set pulled to high after power on with a certain delay time. internal soft start circuitry limits the input inrush current and eliminates output voltage overshoot. when en/set is pulled low, the AHK1421 enters a low-power, non-switching state. the total input current during shutdown is less than 4a. over-temperature protection thermal protection disables the AHK1421 when internal dissipation becomes excessive. thermal protection dis - ables the power mosfet. the junction over-temperature threshold is 140c with 15c of temperature hysteresis. the output voltage automatically recovers when the over-temperature fault condition is removed. over-voltage protection over-voltage protection prevents damage to the AHK1421's pin during led open-circuit or high output voltage conditions. an over-voltage event is defined as a condition where the voltage on the out pin exceeds the over-voltage protection threshold (v ovp ). when v ovp has discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 9 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 reached the threshold limit, the converter stops switching and the output voltage decays. switching resumes when the lower hysteresis limit of v ovp is reached, thereby maintaining an average output voltage between the upper and lower ovp thresholds. led current setting the maximum led current is determined by the r fb resistor value. with a fixed 0.25v voltage on r fb , the led maximum current is a linear ratio to the current flowing through r fb . v fb r fb i led = where v fb = 0.25v table 1 lists examples of calculated r fb resistor values for different maximum led current requirements. higher accuracy r fb resistor can get higher accurate led current. maximum led current (ma) r fb ( ? ) 31 8.06 30 8.33 20 12.5 15 16.66 12 20.83 10 25 table 1: examples of r fb values for setting maximum led current levels. the led dimming is controlled in 32-steps using the s 2 cwire single-wire interface via the en/set pin. 32 s 2 cwire rising-edge steps set the led current from 100% to 2% of the maximum led current. s 2 cwire? serial interface the led current magnitude can be controlled by the en/ set pin using the s 2 cwire interface. the interface records rising edges of the en/set pin and decodes them into 32 individual current level settings. code 1 is full scale (maximum led current), and code 32 is 2% of the full scale. the modulo 32 interface wraps states back to state 1 after the 32nd clock. the counter can be clocked at speeds up to 1mhz, so intermediate states are not vis - ible. the first rising edge of en/set enables the ic and initially sets the output led current to full scale after 500s t lat . once the final clock cycle is input for the desired brightness level, the en/set pin should be held high to maintain the device output current at the pro - grammed level. the device is disabled 500s after the en/set pin enters a logic low state. the en/set timing is designed to accommodate a wide range of data rates from 20khz to 1mhz. after the first rising edge of en/set, the boost converter is enabled and reaches full capacity after the soft-start time. exact counts of clock pulses for the desired current level should be entered on the en/set pin with a single burst of clocks. the counter refreshes each time a new clock input to the en/set pin is detected. a constant cur - rent is maintained as long as en/set remains in a logic high state. to save power, the boost converter is switched off after en/set has remained in the low state for at least the t off timeout period as shown in figure 1. s 2 cwire serial interface timing 1 en/set 2 n- 1 n 3 2 data reg 0n 0 t hi t lo t lat t off figure 1: s 2 cwire timing diagram. discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 10 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 application informationled current setting led current dimming is controlled via the s 2 cwire single- wire interface through the en/set pin in 32 steps. the s 2 cwire interface programs the led current from the maximum led current set by r fb to 2% of the maximum led current as shown in table 2. s 2 cwire data led current (% i max ) s 2 cwire data led current (% i max ) 1 100 17 48 2 97 18 45 3 94 19 42 4 90 20 39 5 87 21 35 6 84 22 32 7 81 23 29 8 77 24 26 9 74 25 23 10 71 26 19 11 68 27 16 12 65 28 13 13 61 29 10 14 58 30 6 15 55 31 3 16 52 32 2 table 2: s 2 cwire dimming control current settings. capacitor selection a 2.2f/10v input capacitor is recommended and a 2.2f/50v output capacitor is suitable as noted above. multi-layer ceramic (mlc) capacitors provide small size and adequate capacitance, low parasitic equivalent series resistance (esr) and equivalent series inductance (esl), and are well suited for use as input, output and compensation capacitors in the AHK1421 step-up con - verter led driver application. mlc capacitors of type x7r or x5r are recommended to ensure good capacitance stability over the full operating temperature range. table 3 lists some recommended capacitors for use with the AHK1421. inductor selection inductor value, saturation current and dcr is most impor - tant parameter in selecting an inductor for AHK1421. the suitable inductance range for the AHK1421 is 4.7h to 22h. higher inductance lowers the step-up converter's rms current value. together with lower dcr value of the inductor, it makes the total inductor power loss become much lower. considering inductor size and cost, 10h inductance is most suitable. inductor saturation current is a key parameter in selecting an inductor. for the step-up converter, the peak inductor current is the dc input current plus half the inductor peak-to-peak current ripple. dc input current is given by: v in i in = v out i led inductor peak-to-peak current ripple: v in (v out - v in ) v out l f i l_pp = inductor peak current: v in (v out - v in ) 2 v out l f v out i led v in i l _ pp 2 i l_peak = i in + = + for example, for a white led with 3.2v v f and 20ma current at 82% efficiency, the inductor peak current for 6leds in a string is: 3.6 (3.2 6 - 3.6) 2 3.2 6 10 1m 3.2 6 0.02 3.6 0.82 i l_peak = + = 276ma manufacturer part number value (f) voltage (v) temperature range case size murata grm188r61a225k 2.2 10 x5r 0603 grm31cr71h225k 2.2 50 x7r 1206 table 3: examples of AHK1421 input and output capacitor selection. discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 11 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 for the inductor copper loss, the inductor dcr value together with the rms current value flowing through the inductor leads to inductor conduction loss and also affects total efficiency. larger dcr leads to larger con - duction loss and decreases total efficiency. the inductor conduction loss can be estimated as shown in the equa - tion: 13 p l_loss = i 2 l_rms dcr = (i 2 l_max + i 2 l_min + i l_max i l_min ) dcr i l_max and i l_min are the inductor peak current and mini - mum current. table 4 gives some examples of recommended inductors for use with the AHK1421. schottky diode selection to achieve maximum efficiency, a low v f schottky diode is recommended. the diode voltage rating should be higher than the ovp voltage. for an AHK1421 driving 6 white leds with up to 4v forward voltage, the diode voltage rating should be higher than 24v. select a diode with dc rated current equal to the input current to allow an adequate margin for safe use. table 5 gives some examples of recommended schottky diodes for use with the AHK1421. discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 12 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 manufacturer part number inductance (h) maximum dc isat current (ma) dcr (m, typ) size (mm) lxwxh type sumida cdrh2d14-100 10 700 294 3.2x3.2x1.55 shielded murata lqh3npn100nm0 10 870 260 3.0x3.0x1.4 non-shielded lqh3npn100ng0 10 630 570 3.0x3.0x0.9 non-shielded coilcraft epl2014-103mlc 10 600 440 2.1x2.2x1.0 shielded table 4: example of AHK1421 inductor selection manufacturer part number maximum dc blocking voltage v r (v) maximum dc forward current i f (ma) non- repetitive peak forward surge current i fsm (a) forward voltage v f (v) case "size wxlxh (mm)" tsc ss13l 30 1100 30 0.51@0.5a sub sma 1.9x3.8x1.43 ss14l 40 1100 30 0.51@0.5a sub sma 1.9x3.8x1.43 diodes sdm20u40 40 250 1 0.37@20ma sod523 0.9x1.7x0.65 sd103bw 30 350 1.5 0.37@20ma sod123 1.7x3.85x1.35 central cmdsh2-3 30 200 1 0.32@15ma sdd323 1.35x2.6x1.0 table 5: example of AHK1421 schottky diode selection discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 13 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 printed circuit board layout recommendations for best performance of the AHK1421, the following guidelines should be followed when designing the pcb layout: 1. make the power trace as short and wide as possible, including the input/output power lines and switching node, etc. 2. make sure the ground bump connected to the print - ed circuit board with large copper area for better thermal dissipation. 3. put the input and output capacitor close to the ic as close as possible to get the best filter result. schematic and layout l1 2.7~5.5v vin gnd out lx en/set AHK1421ica fb c ou t 2.2 f r fb 0.1 f c1 1k r7 1k r5 up down cycl e 1k r8 1k r9 vd d 1 gp 5 2 gp 4 3 gp 3 4 gp2 5 gp1 7 gp0 6 vss 8 pic12f675 u2 red led1 330 r6 green led2 v_mc u en/set 50 k r4 dc+ dc - j1 c in 2.2f 10h ds 1 12.5 lx vout d1d2 d3 d4 d5 d6 j2 AHK1421ica white led driver s 2 cwire/pwm microcontroller 6 4 2 3 5 1 u1 figure 2: AHK1421ica evaluation board schematic. discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 14 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 (a) top layer (b) bottom layer figure 3: AHK1421ica evaluation board component part number description manufacturer u1 AHK1421 s2c controlled, serial led boost driver ic, tsot23-6 skyworks u2 pic12f675 8-bit cmos, flash-based uc; soic-8 microchip c1 grm188r71h104ka01 0.1f, 50v, x7r, 0603 murata cin, cout grm31cr71h225k 2.2f, 50v, x7r, 1206 murata s1-s3 pts645tl50 switch tact, spst, 5mm itt industries d1, d2, d3, d4, d5, d6 rs-0805uw 30ma white led 0805 realstar ds1 ss14l schottky diode tsc l1 cdrh3d18-100nc power inductor 10h 0.9a smd sumida led1 cmd15-21src/tr8 red led; 1206 chicago miniature lamp led2 cmd15-21ugc/tr8 green led; 1206 chicago miniature lamp r4 chip resistor 50k, 1%, 1/4w; 0603 vishay r5,r7, r8, r9 chip resistor 1k, 1%, 1/4w; 0603 vishay r6 chip resistor 330, 1%, 1/4w; 0603 vishay rfb chip resistor 12.5, 1%, 1/4w; 0603 vishay table 6: AHK1421ica evaluation board bom list discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 15 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 1. xyy = assembly and date code. 2. sample stock is generally held on part numbers listed in bold . ordering information package marking 1 part number (tape and reel) 2 tsot23-6 t7xyy AHK1421ica-t1 skyworks green? products are compliant with all applicable legislation and are halogen-free. for additional information, refer to skyworks de?nition of green? , document number sq04-0074. package information tsot23-6 0.40 0.1 00 .95 bsc 1.60 bsc 0.45 0.15 0.25 bsc 0.127 bsc detail "a" 2.80 bsc 1.00 + 10 -0 top view view detail "a" sie view 1.00 0.10 0.000 + 0.100 - 0.000 2.90 bsc discontinued downloaded from: http:///
AHK1421 da ta sheet s 2 c controlled, serial led boost driver 16 skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202265a ? skyworks proprietary information ? products and product information are subject to cha nge without notice. ? august 10, 2012 copyright ? 2012 skyworks solutions, inc. all rights reserved. information in this document is provided in connection with skyworks solutions, inc. (skyworks) pr oducts or services. these materials, including the information contained herein, are provided by sky works as a service to its customers and may be used for informational purposes only by the customer. skyworks a ssumes no responsibility for errors or omissions in these materials or the information contained her ein. sky- works may change its documentation, products, services, speciications or product descriptions at any time, without notice. skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conlicts, incompatibilities, or other dificulties arising from any fut ure changes. no license, whether express, implied, by estoppel or otherwise, is granted to any intellectual prope rty rights by this document. skyworks assumes no liability for any materials, products or informatio n provided here- under, including the sale, distribution, reproduction or use of skyworks products, information or ma terials, except as may be provided in skyworks terms and conditions of sale. the materials, products and information are provided as is without warranty of any kind, whether e xpress, implied, statutory, or otherwise, including fitness for a particular purpose or use, merchantability, performance, quality or non-infringement of any intellectual proper ty right; all such warranties are hereby expressly disclaimed. skyworks does not warrant the accuracy or completeness of the information, text, graphics or other items contained within these materials. skyworks shall not be liable for any damages, in- cluding but not limited to any special, indirect, incidental, statutory, or consequential damages, i ncluding without limitation, lost revenues or lost profits that may result from the use of the materials or information, whether or not the recipient of materials has been advised of the possibility of such damage. skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, o r other equipment in which the failure of the skyworks products could lead to personal injury, death , physical or en- vironmental damage. skyworks customers using or selling skyworks products for use in such applicatio ns do so at their own risk and agree to fully indemnify skyworks for any damages resulting from such improper use or sale. customers are responsible for their products and applications using skyworks products, which may dev iate from published speciications as a result of design defects, errors, or operation of products ou tside of pub- lished parameters or design speciications. customers should include design and operating safeguards to minimize these and other risks. skyworks assumes no liability for applications assistance, custom er product design, or damage to any equipment resulting from the use of skyworks products outside of stated pub lished speciications or parameters. skyworks, the skyworks symbol, and breakthrough simplicity are trademarks or registered trademarks of skyworks solutions, inc., in the united states and other countries. third-party brands and names are for identiication purposes only, and are the property of their respective owners. additional information , including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by refere nce. discontinued downloaded from: http:///

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