BD6164GUT Datasheet, PDF (1/21 Pages) Rohm – 320mA LED Camera Flash Driver

Datasheet
320mA LED Camera Flash Driver
With I²C Compatible Interfaceç
BD6164GUT
˔General Description
The BD6164GUT is 320mA Flash LED driver with
Synchronous rectification step up DC/DC converter that
can drive 1 Flash LED.
It is possible to choice flash and torch current by I²C I/F.
˔Features
 Current regulation for LED
 Flash LED Current driver
(260mA,280mA,300mA,320mA)
 Assist Light Function LED Current driver
(52mA, 72mA)
 High efficiency : 85%
(LED current 300mA, VBAT=3.6V, LED Vf=3.6V,
4MHz mode,Ta=25 ^oC)
 I²C Control I/F
 Synchronous rectification step-up DC/DC converter
 High switching frequency 4MHz
 Over Voltage Protection (OVP)
 In-rush current prevention (Soft Start)
 Over Current Protection (OCP)
 Under Voltage Lockout (UVLO)
 Over Temperature Protection (OTP)
 Short-Circuit Fault detection (SCF)
 Internal generated power supply
˔Key Specifications
 Operating power supply voltage range: 2.7V to 4.5V
 Quiescent Current:
1μA (Typ.)
 Switching Frequency:
4.0MHz(Typ.)
 Operating temperature range:
-30ˆ to +85ˆ
˔Package
W(Typ.) D(Typ.) H (Max.)
VCSP60N1
1.10mm x 1.50mm x 0.675mm
˔Applications
Torch light and flash for camera of mobile phone
˔Typical Application Circuit and Block Diagram
Battery
2.2µF
1.0µH
SW
VOUT
BD6164GUT
SDA
SCL
LEDOUT
GND
2 x 1.5µF
Flash LED
˔Pn Configuration
BOTTOM VIEW
C SCL
SDA
B LEDOUT VOUT
A SW
1
GND
2
˓Product structureɿSilicon monolithic integrated circuitç ˓This product is not designed protection against radioactive rays
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ŋ14ŋ001
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TSZ02201-0G3G0C200280-1-2
21.Dec.2012 Rev.001