Single Channel LED Constant Current Driver
Description
WS3620 Product Description
WS3620 Single Channel LED Constant Current Driver
Features
■ Output current adjustable ■ Inter-chip output current deviation <±4% ■ Over temperature protection ■ Sharing PCB board with LED lamps ■ Excellence EMI performance ■ Simple circuit and low cost
Applications
■ T5/T8 LED tubers ■ LED street lighting ■ LED bulb lamp，LED ceiling lamp
General Description
WS3620 is a single channel LED constant current driver which integrates patented constant current setting and control technology.
The output current designed by external REXT is 5mA~60mA and it is invariant to output voltage change, which has better constant current performance.
It is a low cost circuit with simple circuit and less external components.
WS3620 TO252 and ESOP-8 Package。
Typical Application Diagram
L ED + L ED -
1 OUT
2 GND 3 REXT
A C R1
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
Copyright@Winsemi Microelectronics Co.
, Ltd.
, All right reserved.
WIN SEM I M ICROELECTRON ICS
W/T-DE033-Rev.
A/0 May.
2014
WIN SEM I M ICROELECTRON ICS
0514
WS3620 Product Description
WS3620E8P AXB YM
WS3620DP AXB YM
Pin Definition and Device Marking
WS620 is available in TO252 and ESOP-8 package:
OUT 1 GND 2 REXT 3
GND1 1 REXT1 2 GND2 3 REXT2 4
8 NC 7 OUT1 6 NC 5 OUT2
WS3620: A: product code X：Inner code B：region code YM：year code，month code
Pin Function Description
Pin Name
Pin Number
OUT
1
GND
2
REXT
3
Function Description Power input and constant current output GND Output current setting port
Function Block
OUT
5V VDD GEN
REF
Temp-Adjust
0.
6V
+
EA
-
GND
REXT
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
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com Tel : +86-755-8250 6288 Fax : +86-755-8250 6299
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WS3620 Product Description
Order Information
Package 8-Pin ESOP-8, Pb-free 2-Pin TO-252, Pb-free
IC Marking Information WS3620E8P WS3620DP
...
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