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WT7220

型号:

WT7220

描述:

电流调节器用于LED[ Current Regulator for LED ]

品牌:

ETC[ ETC ]

页数:

4 页

PDF大小:

86 K

偉詮電子股份有限公司  
Weltrend Semiconductor, Inc.  
WT7220  
Current Regulator for LED  
Data Sheet  
REV. 0.10  
NOV 16, 2005  
The information in this document is subject to change without notice.  
Weltrend Semiconductor, Inc. All Rights Reserved.  
新竹市科學工業園區工業東九24號2樓  
2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan  
TEL:886-3-5780241 FAX:886-3-5794278.5770419  
Email:support@weltrend.com.tw  
WT7220  
Data Sheet Rev. 0.10  
GENERAL DESCRIPTION  
The WT7220 is a current regulator which provide 350mA constant sink current. It is optimal for use as  
LED drive.  
FEATURES  
Low quiescent current  
Low standby current <1uA.  
Miniature package SOT-89  
Built-in thermal protection  
PIN CONFIGURATION  
PIN DESCRIPTION  
Pin No.  
Pin Name  
VDD  
GND  
OUT  
TYPE  
FUNCTION  
1
2
3
P
P
O
Power supply input.  
Ground.  
Output.  
Weltrend Semiconductor, Inc.  
Page 2  
WT7220  
Data Sheet Rev. 0.10  
BLOCK DIAGRAM  
Absolute Maximum Operating Range, Ta=+25℃  
CHARACTERISTICS  
Maximum supply voltage  
H-bridge output voltage  
Operating temperature  
Storage temperature  
SYMBOL  
VCC  
VOUT  
Topr  
Tstg  
VALUE  
-0.3 to +7.0  
-0.3 to +7.0  
-20 ~ +75  
Unit  
V
V
-40 ~ +150  
*Note: Mounted on the 114.3x76.1x1.6 mm3 glass-epoxy board.  
Electrical Characteristics (VDD=4V,Ta= +25℃)  
Parameter  
Output Current  
Symbol  
IOUT Vout=0.6V-3V  
IDD  
Conditions  
Min.  
310  
Typ.  
Max.  
Unit  
350  
0.3  
390  
mA  
mA  
Operating current Dissipation  
Load Regulation  
Vout=0.2V-3V  
VDD=3V-6V  
5
5
mA/V  
mA/V  
oC  
Line Regulation  
Thermal Protection Temperature  
Tpt  
120  
Weltrend Semiconductor, Inc.  
Page 3  
WT7220  
Data Sheet Rev. 0.10  
TYPICAL APPLICATION  
Weltrend Semiconductor, Inc.  
Page 4  
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ETC

WT7510 保护电路,电源良好输出( PGO ) ,故障保护锁存器( FPL_N )控制[ protection circuits, power good output (PGO), fault protection latch (FPL_N) CONTROL ] 1 页

ETC

WT7510-N080WT-12 保护电路,电源良好输出( PGO ) ,故障保护锁存器( FPL_N )控制[ protection circuits, power good output (PGO), fault protection latch (FPL_N) CONTROL ] 1 页

ETC

WT7510-S080WT-12 保护电路,电源良好输出( PGO ) ,故障保护锁存器( FPL_N )控制[ protection circuits, power good output (PGO), fault protection latch (FPL_N) CONTROL ] 1 页

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