DESCRIPTION

The A7142 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 2A load with excellent line and load regulation. These devices are available in fixed output voltage of 5V and adjustable output version.
The A7142 operates at a switching frequency of 150KHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.
Other features include a guaranteed ±3% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 100μA standby current.
The A7142 is available in SOP8 and PSOP8 packages.

 FEATURES
 

*5V and adjustable output versions
* Adjustable version output voltage range 1.23V
to 37V
* Input voltage range up to 40V
*Guaranteed 2A output current
* 150KHz fixed frequency internal oscillator
*Built-in thermal shutdown and current limit protection
* Available in SOP8 and PSOP8 Packages

APPLICATION
* Fixed voltage power supply for LCD monitor
and LCD TV
* On-Card switching regulation
* Simple high efficiency Step-down regulator