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WillSEMI |
WD3100
200mA Flash/Torch LED Driver
Descriptions
WD3100 is a low cost Flash/Torch LED driver
designed for front camera flash and small current
rear camera flash application.
WD3100 integrates a current sink to ensure constant
LED current when conditions such as VBAT voltage,
LED VF voltage, ambient temperature change.
The LED current can be adjusted by external resistor
connected between RSET pin and GND, and also
can be set to default 200mA by just simply connect
RSET pin to GND.
WD3100 has flash time-out protection function to
prevent LED lamp from overheating in abnormal
conditions.
Features
Input voltage range
: 2.7~5.5 V
Maximum configurable ILED : 200mA
ILED accuracy
: +/- 20%
Flash timeout protection
Over temperature protection
SOT363 package
Applications
Front Camera Flash
Small Current Rear Camera Flash
LED Torch
Other small current LED driver
WD3100
http//:www.sh-willsemi.com
SOT-363
Pin configuration (Top view)
FA = Device code
* = Month code
Order information
Device
Package
Shipping
WD3100B-6/TR SOT363 3000/Reel&Tape
Will Semiconductor Ltd.
1 Jun, 2016 - Rev. 1.4
Typical Applications
VBAT
3
VCC
Cin
1uF
6
EN
RSET
5
RSET
1
LED
4
CT
CT
2
GND
WD3100
Pin Descriptions
Pin Number Symbol
1 LED
2 GND
3 VCC
4 CT
5 RSET
6 EN
Descriptions
Open drain current sink pin, connected to LED cathode.
Device ground pin.
Device power supply pin.
Time-out protection time setting pin. Connect to GND will disable time-out
protection function.
LED current setting pin. Connect RSET directly to GND will internally set
ILED to default 200mA.
Enable pin of the device.
Block Diagram
VCC
EN
GND
Bias
Vref
EN Logic
OT
protection
Will Semiconductor Ltd.
Constant
Current
Drive
LED
RSET
CT
2
Jun, 2016 - Rev. 1.4
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