BD26502GUL Datasheet, PDF (1/40 Pages) Rohm – 7x17(Max.) Dot Matrix LED Display Driver

System LED Drivers for Mobile Phones
7x17(Max.) Dot Matrix
LED Display Driver
BD26502GUL
No.10041EAT01
●Description
BD26502GUL is “Matrix LED Driver” that is the most suitable for the cellular phone.
It can control 7x17(119 dot) LED Matrix by internal 7-channel PMOS SWs and 17-channel LED drivers.
It can control the luminance and firefly lighting of the LED matrix by the setting of the internal register.
It supports SPI and I2C interface.
VCSP50L4 (4.1mm^□0.55mm height max), small and thin type chip size package.
It adopts the very thin CSP package that is the most suitable for the slim phone.
●Features
1) LED Matrix driver (7x17)
・It has 7-channel PMOS SWs and 17-channel current drivers with 1/7 timing driven sequentially.
・Put ON/OFF(for every dot).
・The current drivers can drive 0-20.00mA current with 16 step(for every dot).
・64 steps of the luminance control by PWM (common setting for all dots)
・Continuous (TDMA off ) lighting function for LED14-LED17
・Easy register setting by A/B 2-side map for each dot.
2) Automatic Slope function
・Cycle time, Slope time can be set for each dot.
3) 8-direction automatic scroll function.
4) Interface
・SPI and I²C BUS FS mode(max 400kHz)Compatibility
・For I²C mode, I²C Device address is selectable (74h or 75h)
5) Thermal shutdown
6) Small and thin CSP package
・62pin VCSP50L4(4.1mm² 0.55mm height max)
*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
Unit
Maximum voltage (note2)
VMAX
7
V
Maximum voltage (note1)
VIOMAX
4.5
V
Power Dissipation (note3)
Pd
1550
mW
Operating Temperature Range
Topr
-40 ~ +85
℃
Storage Temperature Range
Tstg
-55 ~ +150
℃
note1)
note2)
note3)
VIO,RESETB,CE,SDA,SCL,IFMODE,SYNC,CLKIN,CLKOUT,TEST1,TEST2,TEST3,TESTO, DO terminal
Except the above
Power dissipation deleting is 12.4mW/ ^oC , when it’s used in over 25 ^oC. (ROHM’s standard board has been mounted.)
The power dissipation of the IC has to be less than the one of the package.
●Operating Conditions (VBAT≥VIO, VINSW≥VBAT, Ta=-40~85 ^oC)
Parameter
Symbol
Limits
Unit
VBAT input voltage
VBAT
2.7 ~ 5.5
V
VINSW input voltage
VINSW
2.7 ~ 5.5
V
VIO pin voltage
VIO
1.65 ~ 3.3
V
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2010.02 - Rev.A