BD1206GUL Datasheet, PDF (1/13 Pages) Rohm – Backlight LED Driver for Small LCD Panels (Charge Pump Type)

LED Drivers for LCD Backlights
Backlight LED Driver
for Small LCD Panels (Charge Pump Type)
BD1206GUL
No.10040EAT08
●Description
BD1206GUL is 5ch or 6ch parallel LED driver for the portable instruments.
This IC is equipped with an automatic transition charge pump and 16-step LED drivers. Hence this IC realizes high efficiency
and high accuracy drive of LEDs. Additionally, this IC can synchronize LED drive with external PWM signal. This IC is best
suited to turn on white LEDs that require high-accuracy LED brightness control.
●Features
1) 5ch or 6ch parallel LED driver is mounted
2) 16-step LED current adjust function
3) LED current matching is 5% or less
4) Driving control via a single-line digital control interface
5) Automatic transition charge pump type DC/DC converter (×1, ×1.5, ×2)
6) High efficiency achieved (Maximum over 93%)
7) It transits for the most suitable power operating by the LED terminal process of the 6th light when only 5 lights driving
8) Various protection functions such as output voltage protection and thermal shutdown circuit are mounted.
9) The input external PWM is possible and the back light control interlocked with the motion picture is possible.
10) Package: VCSP50L2 (Thick 0.55mm MAX, Pin pitch 0.5mm) CSP15pin package
●Absolute Maximum Ratings (Ta=25ºC)
Parameter
Symbol
Ratings
Unit
Power supply voltage
VMAX
7
V
Input voltage ( EN , PWMIN )
Vdin
GND-0.3 ~ VBAT+0.3
V
Power dissipation
Pd
900
mW
Operating temperature range
Topr
-30 ~ +85
ºC
Storage temperature range
Tstg
-55 ~ +150
ºC
(Note) Power dissipation deleting is 7.2mW/ ºC, when it’s used in over 25 ºC.(It’s deleting is on the board that is ROHM’s standard)
Dissipation by LSI should not exceed tolerance level of Pd.
●Operating Conditions (Ta = -30 ~ 85 ^oC)
Parameter
Symbol
Operating power supply voltage
VBAT
*This chip is not designed to protect itself against radioactive rays.
*This material may be changed on its way to designing.
*This material is not the official specification.
Limits
2.7 ~ 5.5
Unit
V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/12
2010.02 - Rev.A