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Rohm Semiconductor Electronic Components Datasheet

BD6164GUT Datasheet

320mA LED Camera Flash Driver

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Datasheet
320mA LED Camera Flash Driver
With I2C Compatible Interface
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:
-30 to +85
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 structure Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product is not designed protection against radioactive rays
1/17
TSZ02201-0G3G0C200280-1-2
21.Dec.2012 Rev.001


Rohm Semiconductor Electronic Components Datasheet

BD6164GUT Datasheet

320mA LED Camera Flash Driver

No Preview Available !

BD6164GUT
Datasheet
Absolute Maximum Ratings (Ta=25oC)
Parameter
Symbol
Maximum terminal voltage1*1 VMAX1
Rating
7
Unit
V
Maximum terminal voltage2*2 VMAX2
4.5
V
Power dissipation
Pd
550*3
mW
Operating temperature range Topr
-30 to +85
oC
Storage temperature range
Tstg
-55 to +150
oC
*1 for SW, VOUT, LEDOUT
*2 for SCL, SDA
*3 This value will be acquired from a sample device, mounted on a PCB by ROHM. The temperature indicates the dissipation: 6.0 mW/ oC (from Ta>25 oC)
Recommended Operating Ratings (Ta=-30oC to 85oC)
Parameter
Symbol
Rating
Supply voltage
Vin 2.7 to 4.5
Unit
V
Electrical Characteristics
(Unless otherwise noted, Ta = -30oC to+85oC, Vin=2.7V to 4.5V)
Parameter
Symbol Min. Typ. Max.
I2C control terminals SDA/SCL
Low Bus voltage1
VthL1
-
- 0.1
High Bus voltage1
VthH1 1.71
-
-
High level Input current
IinH1
-
-
2
Low level Input current
IinL1 -2 -
-
LED driver
Quiescent current (shutdown) Iq,shdwn
-
1
5
Quiescent current (stand by) Iq,standby - 3 9
LED current accuracy
Iflash -7 0
7
LED current accuracy INL
INL -1 0 1
LED current accuracy DNL
DNL -1 0 1
Current source saturation
voltage
Vsat
- 0.2 0.35
Inductor current limit
Icoil 0.65 0.8 0.95
Over voltage limit
Vovp
4.9 5.1 5.3
Output voltage range
Vorng
-
- 4.7
Under voltage lockout
Vuvlo
2.3 2.4 2.5
UVLO hysteresis
Vhys
0.05 0.1 0.15
Switching frequency
Fsw 3.7 4.0 4.3
*1 This parameter is tested with DC measurement
*2 In mass production, measured in the setting that register ‘ASSISTCUR’=0,’ MODE’=0
Units
Conditions
V
V
μA SCL,SDA=1.8V
μA SCL,SDA=0.0V
μA
μA
%
LSB
LSB
V
A
V
V
V
V
MHz
Shut down
(SDA/SCL = 0V)
Stand by mode
(SDA/SCL pull-up)
*2
@Flash mode, LED
current=300mA,VOUT=4.0V
*1
VOUT terminal
VOUT terminal
VOUT terminal
@4MHz mode
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
2/17
TSZ02201-0G3G0C200280-1-2
21.Dec.2012 Rev.001


Part Number BD6164GUT
Description 320mA LED Camera Flash Driver
Maker ROHM
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