2.7V-5.5V Input, 35V Output White LED Driver With I2C Interface

2.7V-5.5V Input, 35V Output White LED Driver With I2C Interface

The MP3309 is a WLED step-up converter for 2.7V-to-5.5V input that uses peak-current mode to regulate the LED current sensed through an external, low-side resistor. The 200mV feedback voltage and synchronous rectification reduces power loss and reduces PCB space requirements. For non-synchronous mode, setting an internal register can disable the rectifier MOSFET to save driver losses.

The MP3309 features a programmable switching frequency to optimize efficiency. It supports both analog and PWM dimming. In addition, the MP3309 has LED open protection, cycle-by-cycle current limit protection, Under voltage protection and thermal shutdown protection -. The I2C interface can set the protection indication bits and overvoltage protection point.

Features

• 2.7V-to-5.5V Input Voltage
• Analog and PWM Dimming
• Selectable Synchronous or Nonsynchronous Mode
• 400kHz I2 C-Compatible Interface
• Digitally-Set LED Current
• Programmable Switching Frequency
• Programmable Over VoltageProtection Point
• Low 200mV Feedback Voltage with ±1%
• Software- or Hardware-Enable Function
• Internal Soft Start
• UVLO, Thermal Shutdown, OCP

Applications

• Feature Phones and Smart Phones
• Tablets
• <10inchVideo Displays

Documents

 MPS MP3309CGQG Website

 Datasheet