LM3520
Overview
The LM3520 is a dual step-up DC/DC converter, designed to drive up to 5 white LEDs with a constant current and to power an organic LED display with a constant voltage. A single external resistor is used to set the maximum LED current.
- Integrated OLED and white-LED driver
- 80% efficiency
- Drives up 5 LEDs at 20mA/3.6V and 4 LEDs at 30mA/3.6V for main-display
- Up to 20V @ 50mA/3.6V for sub-display
- True shutdown isolation
- Small External Components
- 1 MHz Switching Frequency
- 23V OverVoltage Protection
- Wide Input Voltage Range: 2.7V to 5.5V
- Cycle-By-Cycle Current Limit
