LED Drivers for LCD Backlights
White Backlight LED Driver
for Medium to Large LCD Panels
(Switching Regulator Type)
BD8113EFV is a white LED driver with the capability of withstanding high input voltage (36V MAX). This driver has 2ch
constant-current drivers integrated in 1-chip, which each channel can draw up to 150mA 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 voltage input and also to remove the constraint of the number of LEDs in series connection.
The brightness can be controlled by either PWM or VDAC techniques.
1) Input voltage range 5.0 – 30 V
2) Integrated buck-boost current-mode DC/DC controller
3) Two integrated LED current driver channels (150 mA max. each channel)
4) PWM Light Modulation(Minimum Pulse Width 25µs)
5) Oscillation frequency accuracy ±5%
6) Built-in protection functions (UVLO, OVP, TSD, OCP, SCP)
7) LED abnormal status detection function (OPEN/ SHORT)
8) HTSSOP-B24 package
Backlight for display audio, small type panels, etc.
●Absolute maximum ratings (Ta=25℃)
Power supply voltage
BOOT ,OUTH Voltage
LED output voltage
VREG, OVP, OUTL, FAIL1, FAIL2, LEDEN,
ISET, VDAC, PWM, SS, COMP, RT,
SYNC, EN voltage
VVREG, VOVP, VOUTL, VFAIL1, VFAIL2,
VLEDEN, VISET, VVDAC, VPWM, VSS,
VCOMP, VRT, VSYNC, VEN
-0.3～7 < VCC
Operating temperature range
Storage temperature range
LED maximum output current
150 ※2 ※3
*1 IC mounted on glass epoxy board measuring 70mm×70mm×1.6mm, power dissipated at a rate of 8.8mw/℃ at temperatures above 25℃.
*2 Dispersion figures for LED maximum output current and VF are correlated. Please refer to data on separate sheet.
*3 Amount of current per channel.
●Operating conditions (Ta=25℃)
Power supply voltage
Oscillating frequency range
External synchronization frequency range ※4 ※5
External synchronization pulse duty range
*4 Connect SYNC to GND or OPEN when not using external frequency synchronization.
*5 Do not switch between internal and external synchronization when an external synchronization signal is input to the device.
© 2011 ROHM Co., Ltd. All rights reserved.
2011.07 - Rev.A