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WD3124DA-10/TR

Description
Working voltage: 2.7V~5V
CategoryOther integrated circuit (IC)    The LED driver   
File Size565KB,13 Pages
ManufacturerWILLSEMI
Websitehttp://www.willsemi.com/
Shanghai Will Semiconductor Co., Ltd. is a semiconductor device design and sales company focusing on independent research and development, sales and services. The company was established in May 2007 and is headquartered in Shanghai Zhangjiang High-tech Park, known as the "Silicon Valley of China". It has offices in Shenzhen, Taiwan, China, Hong Kong and other places.
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WD3124DA-10/TR Overview

Working voltage: 2.7V~5V

WD3124DA-10/TR Preview

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WD3124DA
WD3124DA
1000mA Buck/Boost
Charge Pump Flash LED Driver
Description
The WD3124DA is a current-regulated charge pump
ideal for powering high brightness LEDs for camera
flash applications. The charge pump can be set to
regulate two current levels for FLASH and TORCH
modes.
The
WD3124DA
automatically
switches
modes
VIN
C1
C2
FLASH
EN
1
2
3
4
5
Http//:www.sh-willsemi.com
DFN3x3-10L
10
9
8
7
6
VOUT
PGND
SGND
FB
RSET
between step-up and step-down ensuring that LED
current does not depend on the forward voltage. It
switches at 2.2MHz, allowing the use of tiny
components. The supply voltage ranges from 2.7V to
5.5V and is ideally suited for all applications powered
by a single LI-Ion battery cell or three to four NiCd,
NiMH, or Alkaline battery cells.
The WD3124DA also features a very low shutdown
current, an automatic soft-start mode to limit inrush
current, as well as over current, over voltage and
over-Thermal shutdown control.
A low current sense reference voltage (50mV) allows
the use of small 0603 current sensing resistors.
The WD3124DA is available in Green DFN3×3-10L
package and is specified over an ambient temperature
range of -40℃ to +85℃.
GND
Pin configuration (Top view)
3124
DAYW
WD3124DA
3124DA = Device code
Y
W
= Year code
= Week code
Marking
Features
● Output Current up to 1000mA
● Up to 95% Efficiency in Torch Mode
● Adjustable FLASH Mode Current
● Automatic Buck/Boost Mode Switchover
● Wide Input Voltage Range: 2.7V to 5.5V
● Minimum External Components: No Inductors
● High Frequency Operation: 2.2MHz
● Low 50mV Reference for Low Loss Sensing
● PWM Dimming Control
● Automatic Soft Start Limits Inrush Current
● Low Ripple and EMI
Will Semiconductor Ltd.
1
Order Information
Device
Function
Package
Shipping
WD3124DA-10/TR
With timeout
DFN3x3-10L
3000/Reel&Tape
Applications
Cellphones
PADs
Oct, 2017 - Rev. 1.2
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