BD6088GUL_11 Datasheet, PDF (1/52 Pages) Rohm – Mulitifunction Backlight LED Driver for Small LCD Panels (Charge Pump Type)

LED Driver s for LCD Backlights
Mulitifunction Backlight LED Driver
for Small LCD Panels (Charge Pump Type)
BD6088GUL
No.11040EAT29
●Description
BD6088GUL is “Intelligent LED Driver” that is the most suitable for the cellular phone.
It has 6LED driver for LCD Backlight and GPO 4 port.
It has ALC function, that is “Low Power Consumption System” realized.
It can be developed widely from the model high End to the model Low End.
As it has charge pump circuit for DCDC, it is no need to use coils, and it contributes to small space.
VCSP50L3(3.50mm×3.50mm 0.5mm space)
It adopts the very thin CSP package that is the most suitable for the slim phone.
●Functions
1) Total 6LEDs driver for LCD Backlight
It have 4LEDs (it can select 4LED or 3LED) for exclusire use of Main and 2LEDs which can
chose independent control or a main allotmert by resister setting.
“Main Group” can be controlled by Auto Luminous Control (ALC) system.
“Main Group” can be controlled by external PWM signal.
ON/ off and a setup of electric current are possible at the time of the independent control by the independence.
2) Ambient Light sensor interface
Main backlight can be controlled by ambient brightness.
Photo Diode, Photo Transistor, Photo IC(Linear/Logarithm) can be connected.
Bias source for ambient light sensor, gain and offset adjustment are built in.
LED driver current as ambient level can be customized.
3) Charge Pump DC/DC for LED driver
It has x1/x1.5/ x2 mode that will be selected automatically.
The most suitable voltage up magnification is controlled automatically by LED port voltage.
Output voltage fixed mode function loading (3.9V/4.2V/4.5V/4.8V)
Soft start functions, Over voltage protection (Auto-return type), Over current protection (Auto-return type) Loading
4) GPO 4 Port
Open Drain output and slope control loading
5) Thermal shutdown
6) I²C BUS FS mode(max 400kHz)
*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.
●Absolute Maximum Ratings (Ta=25 ^oC)
Parameter
Symbol
Ratings
Maximum voltage
VMAX
7
Power Dissipation
Pd
1380 ^(note
Operating Temperature Range
Topr
-30 ～ +85
Storage Temperature Range
Tstg
-55 ～ +150
note) Power dissipation deleting is 11.04mW/ ^oC, when it’s used in over 25 ^oC.
(It’s deleting is on the board that is ROHM’s standard)
●Operating conditions (VBAT≥VIO, Ta=-35~85 ^oC)
Parameter
Symbol
Ratings
VBAT input voltage
VIO pin voltage
VBAT
VIO
2.7 ～ 5.5
1.65 ～ 3.3
Unit
V
mW
℃
℃
Unit
V
V
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2011.04 - Rev.A