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WD3139 fiches techniques PDF

WillSEMI - 38V Step-Up White LED Driver

Numéro de référence WD3139
Description 38V Step-Up White LED Driver
Fabricant WillSEMI 
Logo WillSEMI 





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WD3139 fiche technique
WD3139
High Efficiency, 38V Step-Up White LED Driver
WD3139
Http//:www.sh-willsemi.com
Descriptions
The WD3139 is a constant current, high efficiency LED
driver. Internal MOSFET can drive up to 10 white LEDs
in series with 1.2A current limit and 38V OVP. A
Pulse-Width-Modulation (PWM) signal can be applied
to the EN pin for LED dimming. The device operates at
1MHz fixed switching frequency to reduce output ripple,
improve conversion efficiency, and allows using small
external components.
The WD3139 is available in TSOT-23-6L Package.
Standard product is Pb-free and Halogen-free.
Features
Input voltage range
: 2.7~5.5V
Open LED Protection
: 38V (Typ.)
Reference Voltage
: 200mV (±5%)
Switching frequency
: 1MHz (Typ.)
Efficiency
: Up to 92%
Main switch current limit : 1.2A (Typ.)
PWM Dimming frequency : 5KHz to200KHz
PWM Dimming Duty Cycle : 0.5% ~ 100%
Applications
Smart Phones
Tablets
Portable games
TSOT-23-6L
LX 1
GND 2
6 VIN
5 OVP
FB 3
4 EN
Pin configuration (Top view)
654
B39F
ACYW
123
TSOT-23-6L
B39F = Device code
Y = Year code
W = Week code
Marking
Order information
Device
Package
Shipping
WD3139F-6/TR TSOT-23-6L 3000/Reel&Tape
Will Semiconductor Ltd.
1 May, 2015 - Rev. 1.1

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