NCP3133A Datasheet - ON Semiconductor

NCP3133A 3A Integrated Synchronous Buck Converter

Pin No. Symbol Description 1 EN Logic control to enabling the switcher. Internally pulled up to VDD with a 1.35 MW resistor 2 NC Not connected 3 PGD Open drain power good output 4 VBST Gate drive voltage for high side FET. Connect capacitor from this pin to SW 5, 6, 7 SW Switch node bet.

NCP3133A Integrated Synchronous Buck Converter 3A NCP3133A is a fully integrated synchronous buck converter for 3.3 V and 5 V step down applications. It can provide up to 3 A load current. NCP3133A supports high efficiency, fast transient response and provides power good indicator. The control scheme includes two operation modes: FCCM and automatic CCM/DCM. In automatic CCM/DCM mode, the controller can smoothly switch between CCM and DCM, where converter runs at reduced switching freque.

NCP3133A Features

* High Efficiency in both CCM and DCM

* High Operation Frequency at 1.1 MHz

* Support MLCC Output Capacitor

* Small Footprint, 3 mm x 3 mm, 16

* pin QFN Package

* Up to 3 A Continuous Output Current

* 2.9 V to 5.5 V Wide Conversion Voltage Range

NCP3133A Datasheet (183.70 KB)