TPS5403
Description
The TPS5403 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 4.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.
Key Features
- Fixed 3.3-V Output
- 4.5-V to 28-V Wide Input Voltage Range
- Up to 1.7-A Maximum Continuous Output Loading Current
- Pulse Skipping Mode to Achieve High Light Load Efficiency
- Over 80% Efficiency at 10-mA Loading
- Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor (Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz)
- Peak Current-Mode Control
- Cycle-by-Cycle Over Current Protection
- Frequency Spread Spectrum and Switching Node Anti-Ringing to Ease EMI Issue
- External Soft Start
