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BD81A04EFV-M

Part Number	BD81A04EFV-M
Manufacturer	Rohm
Description	4-Channel Back-Boost White LED Driver
Published	Jan 5, 2015
Detailed Description	Datasheet 4-Channel Back-Boost White LED Driver with Integrated FET for up to 32 LEDs BD81A04EFV-M ●General Descriptio...
Datasheet	BD81A04EFV-M PDF File

Overview

Datasheet 4-Channel Back-Boost White LED Driver with Integrated FET for up to 32 LEDs BD81A04EFV-M ●General Description BD81A04EFV-M is a white LED driver with the capability of withstanding high input voltage (40V MAX).
This driver has 4ch constant-current drivers integrated in 1-chip, which each channel can draw up to 120mA max, so that high brightness LED driving can be realized.
Furthermore, a current-mode buck-boost DC/DC controller is also integrated to achieve stable operation against unstable car-battery voltage input and also to remove the constraint of the number of LEDs in series connection.
The brightness can be controlled by PWM techniques.
The set board can be made a conserve area because MOSFET is built into ●Key Specifications ■ Power supply voltage ■ LED output current accuracy ■ Oscillation frequency ■ Operating temperature range ■ PWM minimum pulse width ■ LED maximum output current ●Packages HTSSOP-B28 4.
5 to 35 [V] ±3.
0 % @50mA 200 to 2200 KHz -40 to 85 ℃ 1usec 120ｍA／ch 6.
5 ㎜×6.
4 ㎜×1.
0 ㎜ ●Features ■ Integrated buck-boost current-mode DC/DC controller ■ Four integrated LED current driver channels (120 mA max.
each channel) ■ PWM Light Modulation ■ Built-in protection functions (UVLO, OVP, TSD, OCP, SCP) ■ Abnormal status detection function (OPEN/ SHORT) ●Applications For display audio, Small and medium-sized type LCD panel ●Typical Application Circuits CIN Vin (GND) (GND) (GND) VREG VCC EN VDISC RRT (GND) SYNC RT RPC CPC (GND) CSS (GND) COMP SS PWM BD81A04EFV/MUV RISET (GND) (GND) ISET GND SHDETEN LEDEN1 LEDEN2 OVP CS COUT (DGND) (DGND) BOOT OUTH SW OUTL (DGND) DGND (DGND) LED1 LED2 LED3 LED4 PGND FAIL1 (PGND) FAIL2 ○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays.
www.
rohm.
com © 2012 ROHM Co.
, Ltd.
All rights reserved.
TSZ22111・14・001 1/24 TSZ02201-0G1G0C600010-1-2 16.
APR.
2012 Rev.
002 BD81A04EFV-M ●Pin Configuration ●Block Diagram Datas...

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