IR3891 Overview
The IR3891 SupIRBuck® is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3891 a space-efficient solution, providing accurate power delivery for low output voltage. IR3891 is a versatile regulator which offers programmability of switching frequency and a fixed current limit while operating in wide input and output voltage range.
IR3891 Key Features
- Single 5V to 21V application
- Output Voltage Range: 0.5V to 0.86-PVin
- Dual output, 4A/Phase
- Enhanced Line/Load Regulation with Feed
- Programmable Switching Frequency up to 1.5MHz
- Internal Digital Soft-Start
- Enable input with Voltage Monitoring Capability
- Thermally pensated current limit and Hiccup
- External synchronization with Smooth Clocking
- Precision Reference Voltage (0.5V +/-1%)