APW8879B Description
The APW8879B designed with a constant ontime control architecture can step down high voltage to acmodate low-voltage chipset for IMPV8 applications. The APW8879B is equipped with an automatic PFM/PWM mode operation. At light load, the converter operates in the PFM mode to reduce the switching losses and provide high efficiency.
APW8879B Key Features
- Wide Operating Range from +5.5V to +24V Input Voltages
- Power-On-Reset Monitoring on VIN at 4.5V ~ 4.9V range
- Built-in 100uA low quiescent current
- Support IOUT = 8A Application
- Built in PWM & PFM Control Schemes with COT achitecture
- Built in Integrated Bootstrap Forward P-CH MOSFET
- Fixed Switching Frequency from700KHz
- Fixed 3.33V VOUT REF voltage with +0.6% accuracy
- Support Ultrasonic Mode selection on EN Pin
- Support built-in fixed Soft Start time 2.4ms