PRODUCT NAME

ICF CP2101

FUNCTIONAL DESCRIPTION

Switcher Power Converter

APPLICATIONS

Simple high-efficiency step-down (buck) regulator

On-card switching regulators

Positive to negative converter

GENERAL DESCRIPTION

The ICF CP2101 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 5.1V and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The ICF CP2101 series operates at a switching frequency of 165 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.

Other features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 100 µA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

FEATURES

Fixed output voltages5.1V, and adjustable versions output voltage range, 1.2V to 37V

Guaranteed 3A output load current

Input voltage range up to 40V

165 kHz fixed frequency internal oscillator

The adjustment of external resistance,charge the current limit value

Low power standby mode, IQ typically 100 µA

TTL shutdown capability

Thermal shutdown and current limit protection

Requires only 7 external components, uses readily available standard inductors

BLOCK DIAGRAM

ORDERING INFORMATION