GM1937 查看數據表（PDF） - Gamma Microelectronics Inc.
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GM1937 Datasheet PDF : 9 Pages
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GM1937
WHITE LED STEP-UP CONVERTER
Marking Information and Pin Configurations (Top View)
SOT25
VCC
CE
5
4
WLYWA
1
23
SW GND FB
WL: Device Code, Green Product
Y: Year
W: Week code
A: Assembly/testing site
Pin Descriptions
Pin Number
1
2
Pin Name
SW
GND
3
FB
4
CE
5
VCC
Pin Function
Switch Pin, (Minimize trace area at this pin to reduce EMI.)
Ground
Feedback Pin. Reference voltage is 95 mV.
(Calculate resistor value according to the formula
RFB=95 mV / ILED .)
Shutdown Pin
(Connect to 1.5 V or higher to enable device; 0.4 V or less to disable
device)
Input Supply Pin. (Must be locally bypassed)
Order Information
Ordering Number
GM1937ST25RG
Package
SOT-25
Shipping
3,000 Units/Tape and Reel
2
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