NCP81158D Datasheet (ON Semiconductor) - Synchronous Buck MOSFET Driver

NCP81158D, Synchronous Buck MOSFET Driver

Pin No.

Symbol Description 1 BST Floating bootstrap supply pin for high side gate driver.

Connect the bootstrap capacitor between this pin and the SW pin.

2 PWM Control input.

The PWM signal has three distinctive states: Low = Low Side FET Enabled, Mid = Diode Emulation Enabled, High = Hig

DATA SHEET www.onsemi.com Synchronous Buck MOSFET Driver NCP81158D The NCP81158D is a high performance dual MOSFET gate driver in a small 3 mm x 3 mm package, optimized to drive the gates of both high side and low side power MOSFETs in a synchronous buck converter.

The driver outputs can be placed into a high impedance state via the tri state PWM and EN inputs.

The NCP81158D comes packaged with an integrated boost diode to minimize external components.

NCP81158D Features

* When Device is Powered, Fast PWM Response to EN Going High

* Space

* efficient 3 mm x 3 mm DFN8 Thermally

* Enhanced Package

* VCC Range of 4.5 V to 5.5 V

* Internal Bootstrap Diode

* 5 V 3

* stage PWM Input

* Diode Braking Capabili