HT7937
Description
The HT7937 is high efficiency boost converter with a constant current output to provide back light functions in handheld devices. Applications with series connected LEDs ensure constant and identical LED currents resulting in uniform brightness.
Key Features
- Integrated open-circuit protection
- Over voltage protection
- Up to 84% efficiency at VIN=3V, 3LEDs,
- Low standby current: 0.1mA (typ.) (VSHDN=0V)
- Matches LED current
- Small value inductor and capacitors
- Small outline SOT23-6 package ILED= 20mA
- 1.2MHz fixed switching frequency
