Data
|
2007-11-08 |
| Subject |
The ST1937 is a step-up DC/DC converter for white LED driver with constant current. |
| ................................................................................................................................................................................................................................ |
The 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.
The 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. |
|
APPLICATIONS
- Battery Powered Devices
- Digital Camera
- PDA
- GPS
- Hand Held Communication Equipment
- MP3/4
|
|
| ................................................................................................................................................................................................................................ |
