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ST1937S35RG 参数 Datasheet PDF下载

ST1937S35RG图片预览
型号: ST1937S35RG
PDF下载: 下载PDF文件 查看货源
内容描述: DC-DC升压转换器,用于白光LED驱动器 [DC-DC Step-Up Converter for White LED Driver]
分类和应用: 驱动器转换器升压转换器
文件页数/大小: 6 页 / 198 K
品牌: STANSON [ STANSON TECHNOLOGY ]
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DC-DC Step-Up Converter for White LED Driver
ST1937
DESCRIPTION
ST1937 is a step-up DC/DC converter for white LED driver with constant current. The device
can driver one to four LEDs in series from a single cell Lithium ion battery. Internal functions
include current limiting; thermal shutdown and soft-start to prevent damage operate status.
ST1937 DC/DC converter operates at 1.2MHz and low output capacitor as small as 0.22uF;
apply to Lithium-Ion powered systems. A low 100mV reference voltage minimizes power loss
in the current setting resistor for better efficiency.
PIN CONFIGURATION
SOT23-5L
SOT-353 ( SC-70-5L )
APPLICATIONS
Battery Powered Devices
Digital Camera
PDA
GPS
Hand Held Communication Equipment
MP3/4
FEATURES
PART MARKING
Fast 1.2MHz Switching Frequency
High Efficiency up to 85%
Drives up to Four LEDs From 3.2V
Supply
Low Quiescent Current
Internal Over Temperature and Current
Limiting Shutdown Function
Internal Soft-Start Circuit
Available in a Small SOT-23-5L &
SOT-353 Package
ORDERING INFORMATION
Part Number
Package
Part Marking
ST1937S25RG
SOT-23-5L
37YW
ST1937S35RG
SOT-353 ( SC-70-5L )
37YW
Week Code : A ~ Z( 1 ~ 26 ) ; a ~ z( 27 ~ 52 )
ST1937S25RG : S25 : SOT-23-5 ; R : Tape Reel ; G : Pb – Free
ST1937S35RG : S35 : SOT-353 ; R : Tape Reel ; G : Pb – Free
STANSON TECHNOLOGY
120 Bentley Square, Mountain View, Ca 94040 USA
www.stansontech.com
ST1937 2005. V1