IR3899 Description
The IR3899 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3899 a space‐efficient solution, providing accurate power delivery. IR3899 is a versatile regulator which offers programmable switching frequency and the fixed internal current limit while operates in wide input and output voltage range.
IR3899 Key Features
- Single 5V to 21V application
- Output Voltage Range: 0.5V to 0.86× Vin
- Enhanced Line/Load Regulation with Feed‐Forward
- Programmable Switching Frequency up to 1.5MHz
- Internal Digital Soft‐Start/Soft‐Stop
- Enable input with Voltage Monitoring Capability
- Thermally pensated Current Limit with robust
- Smart internal LDO to improve light load and full
- External Synchronization with Smooth Clocking
- Enhanced Pre‐Bias Start‐Up