A4403 Overview
The A4403 is a buck converter that uses valley current-mode control. This control scheme allows very short switch on-times to be achieved, making it ideal for applications that require high switching frequencies bined with high input voltages and low output voltages. Low cost is acplished through high switching frequencies of up to 2 MHz, allowing smaller and lower value inductors and capacitors.
A4403 Key Features
- Extremely fast load-transient response with minimal output voltage delta
- Achieves high step-down ratios with on-times < 50 ns
- User-configurable on-time, achieving switching
- Minimal external ponents required
- Optimized for low value filter capacitors and inductors
- Wide input voltage range: 9 to 46 V
- Output Current: 3 A
- Low standby current <100 μA
- Supplied in thermally enhanced QFN package