BD6155FVM-E2 Rohm Semiconductor, BD6155FVM-E2 Datasheet
BD6155FVM-E2
Specifications of BD6155FVM-E2
Related parts for BD6155FVM-E2
BD6155FVM-E2 Summary of contents
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... DC/DC converter for LCD back light BD6155FVM BD6155FVM is an ideal IC to drive white LED used for the LCD back light of cellular phones, and PDA etc. This IC incorporates charging pump step-up circuit to drive white LED with high V white LED with 4-step constant current. Only one external resistor can set the current value. ...
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... LED driver current pin (Fixed current sink pin) 5 LED LED cathode connection pin for charge pump 6 GND Ground 7 C Capacitor connection pin for charge pump 8 VBAT Power supply voltage input pin CONT CHARGE PUMP DRIVER Function BD6155FVM 8 V BAT GND 5 LED 2/7 ...
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... V 1µF VBAT 8 C1 SW7 GND 6 1 LED 5 2 SW5 5 3 SWO3 Fig.1 BD6155FVM Conditions =80mA charge pump output monitor RB521-S30 use O =60mA charge pump output monitor RB521-S30 use O A AM8 7 SWD1 V8 OPEN SW72 ON OPEN AM72 IS72 VM72 V72 ...
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... Fig.2 Charge pump loading characteristics (Typical operating characteristics) (2 expressions) LED LED (5Pin) + − LEDS (4Pin) RSENSE CURRENT1 CURRENT2 LEDS pin voltage (mV) 205.0 155.0 105.0 55.0 BD6155FVM VBAT=5.5V VBAT=3.6V VBAT=2. 100 (mA) LED drive current (mA) RSENSE=2.7Ω RSENSE=5.1Ω 75.9 40.2 57.4 30.4 20.6 38.9 20 ...
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... The thermal shutdown circuit turn on, and output electric current declines when chip temperature is about 125 degrees due to low electric current driver. ILED VF1 VF1 BAT VF2 LED R1 LED LEDS M1 RSENS 0.2V Pd-V BAT 3 4 Power supply voltage V BAT BD6155FVM (2 expressions) V OUT ∆V VF1=0.5V VF2=3.4V R1=0Ω I =50mA O I =80mA (V) 5/7 ...
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... When you put the IC on the print-circuit board, please be careful of the direction and correct placement of the IC. If the IC is placed wrongly, IC may be damaged. And also, the IC may be damaged if an alien substance is mixed into the line (output-output or output-GND short. CURRENT CONT CHARGE PUMP DRIVER BD6155FVM V BAT 8 C1 1µF D1 (RB521S30) ...
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... Charge pump's characteristic 0.7 0.6 0.5 0.4 0.3 0.2 0.1 RSENSE=0Ω 100 150 LED INPUT CURRENT : ILED (mA) Fig.8 LED output voltage- LED power supply BD6155FVM 12 10 RSENSE=5.1Ω BSENSE=2.7Ω 0.5 1 1.5 2 2.5 3 3.5 4 4.5 (mA) SUPPLY VOLTAGE : VBAT (V) Fig.6 Charge pump output- ...
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Appendix 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 ...