BD7700GU_11 Datasheet, PDF (1/13 Pages) Rohm – Charge Pump type for Flash

System LED Drivers for Mobile Phones
Charge Pump type
for Flash
BD7700GU
No.11041EAT19
●Description
BD7700GU is a maximum of 300mA LED flash (three-channel total) driver IC. Flash mode and torch mode are controllable
by two external control signals. The flash mode timer ability for a maximum of 1s is carried, and management of flash
lighting time is easy and safe.
●Features
1) Current regulation for LED
2) 3ch High side current Driver
3) Flash LED High side Current driver (Max 100mA@1ch)
4) Torch LED High side Current driver (Max 20mA@1ch)
5) Indicate LED High side Current driver (Max 1mA)
6) High efficiency up to 80%
7) 2port control Flash and Torch and Indicate mode
8) Charge pump step-up DC/DC converter (Max 300mA) Three charge pump mode (×1, ×1.5, ×2.0)
9) Automatically transition to each mode
10) Over-voltage protection / In rush current prevention (soft start) / Over current limiter
11) Under Voltage Lockout threshold / Thermal shutdown
12) Small and thin CSP package
●Applications
Flash and torch of camera for mobile phone
●Absolute Maximum Ratings (Ta=25℃)
Parameter
Symbol
Ratings
Unit
Maximum applied voltage
VMAX
7
V
Input voltage
Vdin
GND-0.3 ~ VBAT+0.3
V
Power dissipation
Pd
1062.5 (Note1)
mW
Operating temperature range
Topr
-30 ~ +85
℃
Storage temperature range
Tstg
-55 ~ +150
℃
(Note1) The measurement value, which was mounted on the PCB by ROHM.
Temperature deleting : 8.5mW/℃ from Ta>25℃
●Operating conditions (Ta=-30 ~ 85℃)
Parameter
Symbol
Ratings
Unit
Battery Power Supply voltage
VBAT
2.7 - 5.5
V
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2011.04 - Rev.A