Beskrivning
CMOS Fixed Output Step-Up Switching Regulator
The MAX632 is a +12V fixed output, step-up DC-DC converter for use in low-power, high-efficiency switching regulator applications. The only external components required are an output filter capacitor and a low-cost inductor. Included on-chip are low battery detection circuitry and a charge pump output for generating a negative voltage in dual-supply applications.
The most simply used as a fixed output regulator, the MAX632 can also be set for other output voltages by adding an external voltage divider.
Features
* Fixed +12V output voltage
* Adjustable output with 2 resistors
* 80% typ. efficiency
* Only 2 external components
* Charge pump for negative output
* 135uA typ. operating current
Applications
* Minimum component, high-efficiency DC-DC converters
* Portable instruments
* Rechargeable and primary battery power conversion
* Uninterruptable on-board power supplies
* Card level multiple power conversion
