BD7710GWL Datasheet, PDF (1/40 Pages) Rohm – 1.5A LED Camera Flash Driver

1.5A LED Camera Flash Driver
with I²C Compatible Interface
BD7710GWL
●General Description
The BD7710GWL is 1.5A Flash LED Driver with
Synchronous rectification step up DC/DC converter that
can drive 3LED.
It is possible to set by I2C interface.
With synchronous rectification (no external schottky
barrier diode required) and small package, they can
save mount space.
●Features
1) Synchronous rectification step-up DC/DC
converter.(no external S.B.D.)
2) 3 channel current driver (maximum total 1.6A)
3) It is possible to control register by I2C interface
4) Programmable lighting mode
5) Programmable LED current
6) Programmable Battery drop protection
7) Programmable Flash timer
8) Rich safety function
Over Current Protection (OCP)
Over Voltage Protection (OVP)
VOUT Short Protection
LED short/open Protection
UVLO
TSD
Battery drop Protection
LED Temperature Monitoring
●Key Specifications
■ VBAT Input voltage
■ Operating temperature range
■ Quiescent Current
■ LED Current
■ Switching frequency
2.7V to 5.5V
-40℃ to +85℃
3.0μA(MAX)
1.6A(MAX)
2MHz(typical)
●Packages
UCSP50L2
1.90 ㎜×2.10 ㎜×0.55 ㎜(MAX)
●Applications
■ Single/Dual/Triple White LED Flash Supply for
Cell Phones and Smart-Phones
■ DSC,DVC
■ Video Lighting for Digital Video Applications
■ Amusement accessory
●Typical Application Circuits
●Pin Configuration [Bottom View]
CIN
4.7µF
L
2.2µH
E
LED2 LED1 LED3 VBAT
battery
I²C I/F
VBAT
RESETB
SCL
SDA
SW SW
STRB0
STRB1
TX_MASK
NC
PGND GND
TS
VOUT
LED1
LED2
LED3
NC
COUT
D
PGND PGND STRB1 NC
10µF
C
SW
SW ^TX_MASK TS
B
SDA
SCL RESETB STRB0
A
NC
VOUT GND GND
Figure 1. 1.5A application Block diagram
1
2
3
4
Figure 2. Pin Configuration
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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20.May.2013 Rev.003