LM5642
Overview
The LM5642 consists of two current mode synchronous buck regulator controllers operating 180˚ out of phase with each other at a normal switching frequency of 200kHz. Out of phase operation reduces the input ripple RMS current, thereby significantly reducing the required input capacitance.
- Two synchronous buck regulators
- 180˚ out of phase operation
- Synchronizable switching frequency from 150kHz to 250kHz
- 4.5V to 36V input range
- 50µA Shutdown current
- Adjustable output from 1.3V to 90% of Vin
- 0.04% (typical) line and load regulation error
- Current mode control with or without a sense resistor
- Independent enable/soft-start pins allow simple sequential startup configuration.
- Configurable for single output parallel
