LTC3672B-1 Overview
Description
The LTC®3672B-1 is a triple power supply composed of a 400mA synchronous buck regulator and two 150mA lowdropout linear regulators (LDOs), where one of the LDOs can be powered from the buck output to improve efficiency. Constant-frequency 2.25MHz operation is maintained down to very light loads.
Key Features
- Triple Output Supply From a Single 2.9V to 5.5V Input
- Buck DC/DC: Fixed 1.8V Output, Up to 400mA
- LDO1: Fixed 1.2V Output, Up to 150mA
- LDO2: Fixed 2.8V Output, Up to 150mA
- ±2.5% Reference Accuracy
- Constant Frequency 2.25MHz Operation
- Minimum External Component Count
- Current Mode Operation for Excellent Line and Load Transient Response
- Internal Soft-Start for Each Output
- Single Enable Pin Turns On/Shuts Down All Three Outputs
