G5603
Features
- Ultra-High Efficiency
- No Current-Sense Resistor (Lossless ILIMIT)
- Quasi-PWM with 100ns Load-Step Response
- 1% VOUT Accuracy Over Line and Load
- 0.75V to 3.6V Adjustable Output Range
- 4.5V to 24V Battery Input Range
- Integrated Boost Diode
- OVP & UVP
- 1.7ms Soft-Start
- Drives Large Synchronous-Rectifier FETs
- Power-Good Indicator
Applications
- Notebook puters
- CPU Core Supply
- I/O Supply
- Chipset/RAM Supply as Low as 0.75V
- Networking Power Supply
General Description
G5603 uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The G5603 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs. Single-stage buck conversion allows these devices...
