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BM0123A Datasheet Preview

BM0123A Datasheet

Inherently Matched LED Current driver chip

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Features
z Inherently Matched LED Current driver chip
z High Efficiency:83%
z Drives Up to Five LEDs from 2.2V Supply
z 17V Over Voltage Protection
z Fast 1.4MHz Switching Frequency
z Requires Only 1μF Output Capacitors
z SOT-23-6 Package
BM0123A
Applications
z Communication equipment
z White LED Backlight Display for PDA
z Pocket PC
z Handheld Devices
z GPS, portable DVD, digital-frame
z White LED display backlighting
General Description
The BM0123A is a step-up DC/DC converter specifically designed to drive up to 5
series white LEDs with constant current. Series connection of the LEDs provides identical
LED currents resulting in uniform brightness and eliminates the need for ballast resistors.
The BM0123A switches at 1.4MHz, allowing the use of tiny external components. A low
0.255V feedback voltage minimizes power loss in the current setting resistor for high
efficiency. The OVP pin monitors the output voltage and turns off the converter whenever
the LEDs are open. The BM0123A is available in low profile SOT-23-6 package.
It can drive up to 5 (series) * 9 (parallel) LEDs
Pin to pin with RT9271 and AIC1896
1
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Bookly

BM0123A Datasheet Preview

BM0123A Datasheet

Inherently Matched LED Current driver chip

No Preview Available !

BOOKLY
Block Diagram
BM0123A
Pin Assignment
Typical Application Circuit
2
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Part Number BM0123A
Description Inherently Matched LED Current driver chip
Maker Bookly
Total Page 6 Pages
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