Product description
+5V/Adjustable CMOS Step-down Switching Regulator
The MAX638 step-down switching regulator is designed for minimum component, low power, DC-DC conversion. Typical applications require only a small, low-cost inductor, an output filter capacitor, and a catch diode. Low battery detection circuitry is included on chip. Though most simply used as a fixed +5V output regulator, the MAX638 can be set for other voltages by adding 2 resistors.
Features
* Fixed +5V output
* Adjustable output with 2 resistors
* Low operating current
* 85% typ. efficieny
* 3 external components
* Low battery detector
Applications
* Efficient DC-DC step-down regulation
* Linear voltage regulator replacement
* +12V to +%V conversion
* Battery life extension
* Portable instruments
The MAX638 step-down switching regulator is designed for minimum component, low power, DC-DC conversion. Typical applications require only a small, low-cost inductor, an output filter capacitor, and a catch diode. Low battery detection circuitry is included on chip. Though most simply used as a fixed +5V output regulator, the MAX638 can be set for other voltages by adding 2 resistors.
Features
* Fixed +5V output
* Adjustable output with 2 resistors
* Low operating current
* 85% typ. efficieny
* 3 external components
* Low battery detector
Applications
* Efficient DC-DC step-down regulation
* Linear voltage regulator replacement
* +12V to +%V conversion
* Battery life extension
* Portable instruments