BD8112EFV-M_11 Datasheet, PDF (1/23 Pages) Rohm – White Backlight LED Drivers for Medium to Large LCD Panels (Switching Regulator Type)

Power Management ICs for Automotive Body Control
White Backlight LED Drivers
for Medium to Large LCD Panels
(Switching Regulator Type)
BD8112EFV-M
No.11039ECT11
●Description
BD8112EFV-M 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.
●Features
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
●Applications
Backlight for display audio, small type panels, etc.
●Absolute maximum ratings (Ta=25℃)
Parameter
Symbol
Ratings
Unit
Power supply voltage
V_CC
36
V
BOOT , OUTH Voltage
SW, CS Voltage
V_BOOT, V_OUTH
V_SW, V_CS
41
V
36
V
BOOT-SW Voltage
V_BOOT-SW
7
V
LED output voltage
V_LED1,2
36
V
VREG, OVP, OUTL, FAIL1, FAIL2,
V_VREG, V_OVP, V_OUTL, V_FAIL1, V_FAIL2,
LEDEN, ISET, VDAC, PWM, SS, COMP, V_LEDEN, V_ISET, V_VDAC, V_PWM, V_SS, V_COMP,
-0.3～7 < V_CC
V
RT, SYNC, EN voltage
V_RT, V_SYNC, V_EN
Power Consumption
Pd
1.10 ^*1
W
Operating temperature range
Topr
-40～+105
℃
Storage temperature range
Tstg
-55～+150
℃
LED maximum output current
I_LED
150 ^{*2 *3}
mA
Junction temperature
Tjmax
150
℃
*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.
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2011.08 - Rev.C