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| Variable output DC/DC converter 0 to 19V/300mA output type BP5811 Absolute Maximum Ratings Parameter Motor driving supply voltage CTL input voltage Maximum output current Operating temperature range Storage temperature range Maximum surface temperature Symbol VMIN VCTL Iopeak Topr Tstg Tcmax Dimensions (Unit : mm) Limits 25 0.3 to 5.5 300 -20 to +80 -30 to +85 100 Unit V V mA C C C Recommended Action Conditions Parameter Symbol Motor driving supply voltage VMIN CTL input voltage Vctl CTL input frequency fctl Min. 19.0 0 1 Typ. 20.0 50 Max. 21.0 5.0 100 Unit V V kHz Conditions IO=300mA Derating Curve Output Current Io(mA) 350 300 250 200 150 100 50 0 Derating Curve Vctl=5V Vctl=4V Vctl=3V Vctl=2V Vctl=1V Electrical Characteristics Unless otherwise specified,VMIN=20V, IO=300mA. VCTL=5.0V, Ta=25C Symbol Min. Parameter Typ. Max. Unit V 18.0 20.0 19.0 V Output voltage 14.3 15.9 Vo 15.1 V 6.76 7.94 7.35 mA Output current 300 Io Vp-p Output ripple 0.15 VP 0.05 % Power conversion e fficiency 88 93 Conditions -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature Ta(C) Output voltage control characteristic (Ta=25C) VO-VCTL Characteristics (VMin=20V) Output Voltage Vo (V) 20 15 10 5 0 0 1 2 3 4 5 Control Voltage (DC) VCTL(V) Application circuit BP5811 Output Voltage Vo (V) BP5811 1 2 3 6 7 8 9 VO-Duty Characteristics (VMin=20V) 20 15 10 5 0 0 20 40 60 80 100 Control Duty fCTL=50kHz Duty(%) L1 WMin C1 CTL Be sure to use fuse for safety. Vo C2 Conversion efficiency (VMin=20V, VCTL=5V) 100 90 80 70 60 50 40 30 20 10 0 0 Conversion Efficiency (%) External components setting FUSE: Fuse C1: Capacitor for input voltage smoothing C2: Capacitor for Output voltage smoothing L1: Power inductor Please make sure to use quick acting (2.3A) 470F/50V Low impedance Recommended part : PM series (Nichicon) 470F/50V Low impedance Recommended part : PM series (Nichicon) 47H, Rated current 1.2A or higher Recommended part : TSL0808-470K1R2 (TDK) 50 100 150 200 250 300 Output Current IO (mA) Description terminal Pin No. 1 2 3 4 5 6 7 8 9 Function Input terminal N.C. GND Skip Skip Coil connection terminal Coil connection terminal Control terminal Output voltage Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.1 |
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