HT7939
Description
The HT7939 is a high efficiency boost converter for driving White LEDs using current mode operation. The device is designed to drive up to 39 White LEDs from a 5V power supply.
Key Features
- Input range from 2.6V~5.5V
- Built-in Power MOSFET
- Can drive up to 39 White LEDs with a 5V input
- Low standby current: 0.1mA (typ.) with VEN low
- Integrated Over-voltage, Over-temperature and
- Under voltage lock-out protection
- 1.2MHz fixed switching frequency
- High efficiency - up to 90%
- 6-pin SOT23-6 package Over-current protection circuits
