onsemi, NCP1597AMNTWG Synchronous Buck Regulator, 1-Channel 2A Adjustable 6-Pin, DFN

The NCP1597A family is a fixed 1 MHz frequency, high-output-current, synchronous PWM converter that integrate low-resistance, high-side P-channel MOSFETs and low-side N-channel MOSFETs. The NCP1597A utilizes current mode control to provide fast transient response and excellent loop stability and supports PFM mode at light load for higher efficiency. It regulates input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.8 V and is able to supply up to 2.0 A.

Input voltage range from 4.0 V to 5.5 V
Internal 140m / 90m MOSFETs
Fixed 1 MHz Switching Frequency
Hiccup Mode Short-Circuit Protection
Thermal Shutdown Protection
Adjustable Output Voltage Down to 0.8 V
PFM Mode at Light Load
Typical +5V applications
High efficiency at full load
Reduced output filter component size and value
Reduced heat during short circuit
Prevents overheating in the application
Ability to regulate low output voltages
Increased efficiency at light load versus fixed PWM