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BD7710GWL Datasheet

1.5A LED Camera Flash Driver

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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
-40to +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 34
Figure 2. Pin Configuration
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/36
TSZ02201-0F2F0C200010-1-2
20.May.2013 Rev.003


Rohm Semiconductor Electronic Components Datasheet

BD7710GWL Datasheet

1.5A LED Camera Flash Driver

No Preview Available !

BD7710GWL
Datasheet
Absolute Maximum Ratings (Ta=25 oC)
Parameter
Symbol
Limits
Maximum voltage
VMAX
7
Power Dissipation (note1)
Pd 820
Operating Temperature Range
Topr -40 to +85
Storage Temperature Range
Tstg -55 to +150
Note1Power dissipation deleting is 6.56 mW/ 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 (Ta= -40 to 85 oC)
Parameter
VBAT input voltage
Symbol
VBAT
Limits
2.7 to 5.5
Unit
V
mW
Unit
V
Electrical characteristics
(Unless otherwise noted, Ta = 25oC, VBAT=3.6V)
Parameter
Symbol
[Supply Current]
Quiescent Current
Iq
Current Consumption
(Device not switching)
Idd1
UVLO Voltage
VUVLO
[Switching Regulator]
SW NMOS on resistance
Ronn
SW PMOS on resistance
Ronp
Switching frequency
Fsw
Duty cycle limit
Duty
Output voltage range
Vo
FB Voltage1
VFBT
FB Voltage2
VFBF
Over voltage Protection
VOVP
VOUT Short Protection
Over Current Protection
[LED Temperature monitoring]
TS Current source
TS Resistance (Warning temperature)
TS Resistance (Hot temperature)
[Current Driver]
Torch LED Current accuracy
Flash LED Current accuracy
[SDA, SCL]
L level input voltage
Vshto
OCP
Isource
Lwarn
Lhot
ITdiff
IFdiff
VILI
H level input voltage
VIHI
L level output voltage
[RESETB]
L level input voltage
VOLI
VILR
H level input voltage
VIHR
Pull-down resistance
[STRB0 / STRB1 / TX_MASK]
L level input voltage
RPD
VILE
H level input voltage
VIHE
Pull-down resistance
*1 This parameter is tested with dc measurement.
RPD
Min. Typ. Max. Units Condition
- 0.5 3.0 μA At OFF
9.5 - mA
-
1.8 2.1 2.4
V VBAT falling edge
- 180 - mΩ
- 180 - mΩ
1.6 2 2.4 MHz
- 80 - %
- - 5.5 V
- 200 300 mV In Boost On, Torch mode
- 400 - mV In Boost On, Flash mode
4.5 4.65 4.8
V 0000OVP[3:0] 0100
5.8 6.0 6.2
V 0101OVP[3:0] 1111
- 1.5 -
V
- 2.0 -
A *1 ILIM[4]=1
- 25 -
- 42.0 -
- 13.8
μA
kΩ LEDWARN bit = 1
kΩ LEDHOT bit = 1
-10 0 +10 % ILED=100mA
-7.5 0 +7.5 % ILED= 400mA
-0.3 -
0.4 V
1.4
-
VBAT
V
+0.3
0 - 0.3 V SDA Pin, IOL=3 mA
-0.3 -
0.3 V
1.0
-
VBAT
+0.3
V
- 400 - kΩ
-0.3 -
0.3 V
1.0
-
VBAT
V
+0.3
- 400 - kΩ
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/36
TSZ02201-0F2F0C200010-1-2
20.May.2013 Rev.003


Part Number BD7710GWL
Description 1.5A LED Camera Flash Driver
Maker ROHM
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BD7710GWL Datasheet PDF






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