LM3530 Description
The LM3530 current mode boost converter supplies the power and controls the current in up to 11 series white LEDs. The 839-mA current limit and 2.7-V to 5.5-V input voltage range make the device a versatile backlight power source ideal for operation in portable applications. The LED current is adjustable from 0 mA to 29.5 mA via an I2C-patible interface.
LM3530 Key Features
- 1 Drives up to 11 LEDs in series
- 1000:1 Dimming Ratio
- 90% Efficient
- Programmable Dual Ambient Light Sensor Inputs
- I2C Programmable Logarithmic or Linear
- External PWM Input for Simple Brightness
- True Shutdown Isolation for LEDs and Ambient
- Internal Soft-Start Limits Inrush Current
- Wide 2.7-V to 5.5-V Input Voltage Range
- 40-V and 25-V Overvoltage Protection Options