MAX1540 Description
The MAX1540/MAX1541 dual pulse-width modulation (PWM) controllers provide the high efficiency, excellent transient response, and high DC-output accuracy necessary for stepping down high-voltage batteries to generate low-voltage chipset and RAM power supplies in notebook puters. The Maxim proprietary Quick-PWM™ controllers are free running, constant on-time with input feed forward. This configuration provides...
MAX1540 Key Features
- Inductor-Saturation Protection
- Accurate Differential Current-Sense Inputs
- Dual Ultra-High-Efficiency Quick-PWMs with 100ns Load-Step Response
- 1% VOUT Accuracy over Line and Load
- 2V to 28V Battery Input Range
- 170kHz to 620kHz Selectable Switching Frequency
- Overvoltage/Undervoltage-Protection Option
- 1.7ms Digital Soft-Start
- Drives Large Synchronous-Rectifier FETs
- 2V ±0.7% Reference Output