MAX1579 Overview
The MAX1578/MAX1579 provide four regulated outputs to meet all the voltage requirements for small activematrix TFT-LCD displays in handheld devices where minimum external ponents and high efficiency are required. Each device consists of three advanced charge pumps for LCD bias power and a step-up converter for driving up to 8 series white LEDs for backlighting. The input voltage range is from 2.7V to 5.5V.
MAX1579 Key Features
- Four Regulators in One Package
- Bias Power Using Charge Pumps +5V at 25mA for Source Driver +15V at 100µA for VON -10V at 100µA for VOFF No External Dio
- LED Backlight Power Using Boost Converter Series LED Connection for Uniform Illumination Supports Up to 8 LEDs at 25mA (
- Uses Only Ceramic Capacitors and Only One Inductor
- Independent Enable Inputs for LED and Bias Power
- Thermal-Shutdown Protection
- 1µA Shutdown Current
- Tiny 4mm x 4mm Thin QFN Package