STANSON ST1937
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.| Part No. | ST1937 |
|---|---|
| Datasheet | ST1937 Download |
| Manufacturer |  STANSON |
| Description | DC-DC Step-Up Converter |
| Buy | Stock & Price |
DESCRIPTION
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
z Battery Powered Devices z Digital Camera z PDA z GPS z Hand Held Communication Equipment z MP3/4 PART MARKING ORDERING INFORMATIONFEATURES
z Fast 1.2MHz Switching Frequency z High Efficiency up to 85% z Drives up to Four LEDs From 3.2V Supply z Low Quiescent Current z Internal Over Temperature and Current Limiting Shutdown Function z Internal Soft-Star
