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| OM7604ST ISOLATED HERMETIC TO-257AA ADJUSTABLE VOLTAGE REGULATOR Three Terminal, Adjustable Voltage, 3.0 Amp Precision Positive Regulator In A Hermetic JEDEC TO-257AA Package FEATURES * * * * * * Isolated Hermetic Package, JEDEC TO-257AA Outline Reference Voltages Set To 2% (1% Available) Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Screened To MIL-STD-883 Similar To Industry Standard P/N LM150A DESCRIPTION These three terminal positive regulators are supplied in a hermetically sealed metal package whose outline is similar to the industry standard TO-220 plastic package. All protective features are designed into the circuit, including thermal shutdown, current limiting and safe-area control. With heat sinking, they can deliver over 3.0 amps of output current. These units feature 2% initial voltage tolerance, 0.3% load regulation and 0.01% line regulation. ABSOLUTE MAXIMUM RATINGS @ 25C Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +35V Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to +150C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Typical Power/Thermal Characteristics: Rated Power @ 25C TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25W TA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance qJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2C/W qJA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W 3.3 Note: For 1% device, add letter "A" in front of part number (e.g. OMA 7604ST). 4 11 R4 Supersedes 1 07 R3 3.3 - 141 OM7604ST ELECTRICAL CHARACTERISTICS Test Reference Voltage Symbol VREF Conditions IOUT = 10mA TA = 25C -55C TA 125C (Note 1) unless otherwise specified Limits Min. 1.20 Max. 1.30 V Unit 3.0V (VIN - VOUT) 35V, P 30W 10mA IOUT 3.0A (Note 2) Line Regulation (Note 2) VOUT VIN 3.0V (VIN - VOUT) 35V, IOUT = 10mA, TJ = 25C 3.0V (VIN - VOUT) 35V, IOUT = 10mA Load Regulation (Note 2) VOUT IOUT 10mA IOUT 3.0A, VOUT 5.0A, TJ = 25C 10mA IOUT 3.0A, VOUT 5.0A 10mA IOUT 3.0A, VOUT 5.0A, TJ = 25C 10mA IOUT 3.0A, VOUT 5.0A Thermal Regulation Ripple Rejection (Note 3) Adjust Pin Current Adjust Pin Current Change Miminum Load Current Current Limit IMIN ICL VIN VREF IAdj IAdj 10mA IOUT 3.0A, IOUT = 10mA 3.0V (VIN - VOUT) 35V (VIN - VOUT) = 35V (VIN - VOUT) 10V (VIN - VOUT) = 30V 20ms pulse, TA =25C VOUT = 10V, f = 120Hz CADJ = 10F 1.20 1.30 V 0.01 %/V 0.05 %/ 17.5 mV 50 mV 0.35 % 1.0 % 0.01 66 %/W dB 100 5.0 A A 5.0 3.0 0.3 mA A A Notes: 1. Unless otherwise specified, these specifications apply for (VIN - VOUT) = 5.0V and IOUT = 1.5A. Although power dissipation is internally limited, these characteristics are applicable for power dissipation up to 30W. 2. Regulation is measured at a constant junction temperature using a pulse technique. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. 3. Guaranteed if not tested to the limits specified. 3.3 3.3 - 142 OM7604ST TYPICAL PERFORMANCE CHARACTERISTICS Load Regulation 1.0 Voltage Change (Percent) 0 Output Current (A) 0.1 0.2 0.3 0.4 0.5 -75 -50 -25 0 25 50 75 100 125 150 Temperature (C) Dropout Voltage 3 Input-Output Differential (V) 2.5 2 1.5 1 0.5 -75 VOUT = 100 mV IOUT = 3A Current Limit 6 65 Adjustment Current (A) TJ = -55C TJ = 25C TJ = 150C Adjustment Current 60 55 50 45 40 35 30 -75 -25 25 75 125 4 2 0 0 5 10 15 20 25 30 35 Input-Output Differential (V) Temperature Stability Minimum IOUT Current (mA) 1.27 Reference Voltage (V) Temperature (C) Minimum Operating Current 5 4 3 2 1 0 TJ = -55C TJ = 25C TJ = 150C IOUT = 3 A IOUT = 2 A IOUT = 20 mA 1.26 1.25 1.24 1.23 -50 -25 -0 25 50 75 100 125 150 Temperature (C) Ripple Rejection 100 -25 25 75 125 0 5 10 15 20 25 30 35 40 Input-Output Diffential(V) Ripple Rejection Temperature (C) Ripple Rejection 100 Ripple Rejection (dB) Ripple Rejection (dB) 80 60 CADJ = 0 CADJ = 10F 80 Ripple Rejection (dB) CADJ = 10F 80 60 CADJ = 0 70 60 VIN = 15V CADJ = 10F 40 20 0 0 VIN - VOUT = 5V VOUT = 500mA f = 120Hz TJ = 25C 40 VIN = 15V CADJ = 0 VOUT = 10V f = 120Hz TCASE = 25C 20 0 10 VOUT = 10V IOUT = 500mA 50 40 0.1 5 10 15 20 25 30 35 Output Voltage (V) Output Voltage (Deviation (V) Output Impedance 100 1k 10k 100k 1M 1 Output Current (A) Load Transient Response 10 Frequency (Hz) Output Voltage Deviation (V) 1.5 1 0.5 0 -0.5 -1 1 0.5 0 0 10 20 30 40 Time (s) Line Transient Response CADJ = 0 COUT = 0 VOUT = 10V IOUT = 50mA TJ = 25C Output Impedance (Ohms) 10 1 0.1 0.01 0.001 0.0001 10 VIN = 15V VOUT = 10V IOUT = 500mA CADJ = 0 COUT = 0 Input Voltage Change(V) CADJ = 10F COUT = 10F Load Current (A) COUT = 1F CADJ = 10F 1.5 1 0.5 0 -0.5 -1 -1.5 1.5 1 0.5 0 COUT = 0 CADJ = 0 COUT = 1F CADJ = 10F VIN = 15V, VOUT = 10V Preload = 100mA TJ = 25C 3.3 100 1k 10k 100k 1M 0 10 20 30 40 Frequency (Hz) Time (s) 3.3 - 143 OM7604ST TYPICAL APPLICATIONS 1.2 - 2.5V Adjustable Regulator VIN Adj VOUT R1 240 + C2 + l 1F VOUT+ + Improving Ripple Rejection VIN 1F VIN Adj R2 365 1% VOUT 5V R1 121 1% + C1 10f* Adjustable Current Limiter 0.5 VIN Adj VOUT 1K 500 C1* 1F R2 5k *C1 improves ripple rejection, XC should be small compared to R2. + Optional - improves l transient response. *Needed if device is far from filter capacitors. R2 + +V OUT = 1.25V(1+ R1 ) Precision High Current Reference VIN VIN Adj 7 6 LT 1001 4 2 - 2.5V LT 1009 4.99k 1% +3 2k 15k 1% VOUT +10V VIN VIN Adj VOUT Remote Sensing Rp (Max Drop 300mV) 5V 2k 7 25 121 6 VIN -2 3 1k RL LT 301A 1 8 100pF + 4 365 Return + 5F RET 25 MECHANICAL OUTLINE .420 .410 .200 .190 .045 .035 .665 .645 .537 .527 .430 .410 .038 MAX. PIN CONNECTION Tab .150 .140 3.3 .750 .500 .005 .035 .025 .100 TYP. .120 TYP. 123 Front View Pin 1: Adjust Pin 2: VOUT Pin 3: VIN Tab: Isolated NOTES * Case is metal/hermetically sealed * Isolated Tab 205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246 |
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