MAX8643A Overview
Description
The MAX8643A high-efficiency switching regulator delivers up to 3A load current at output voltages from 0.6V to (0.9 x VIN).The IC operates from 2.35V to 3.6V, making it ideal for on-board point-of-load and postregulation applications. Total output error is less than ±1% over load, line, and temperature.
Key Features
- fixed-frequency PWM mode operation with a switching frequency range of 500kHz to 2MHz set by an external resistor
- High-frequency operation allows for an all-ceramic capacitor design
- The high operating frequency also allows for small-size external components
- Following a simple layout and footprint ensures first-pass success in new designs
- The MAX8643A comes with a high-bandwidth (>14MHz) voltage-error amplifier
- The MAX8643A provides two tri-state logic inputs to select one of nine preset output voltages
- The preset output voltages allow customers to achieve ±1% output-voltage accuracy without using expensive 0.1% resistors
- The MAX8643A offers programmable soft-start time using one capacitor to reduce input inrush current
- The MAX8643A is available in a lead-free, 24-pin, 4mm x 4mm thin QFN p
