NCP81040 Datasheet (ON Semiconductor) - Programmable Multi-Phase Synchronous Buck Converter

NCP81040, Programmable Multi-Phase Synchronous Buck Converter

Pin No 1 Mnemonic VCC3 Description 3.3 V Power Supply Output.

A capacitor from this pin to ground provided decoupling for the interval 3.3 V LDO.

2 ALERT ALERT Output.

Open drain output that asserts low when the VR exceeds a programmable limit.

3 FAULT FAULT Output.

Open drain output that

NCP81040 Programmable Multi-Phase Synchronous Buck Converter with I2C Interface The NCP81040 is an integrated power control IC with an I2C interface.

It combines a highly efficient, multi phase, synchronous buck switching regulator controller with an I2C interface, which enables digital programming of key system parameters to optimize system performance and provide feedback to the system.

It uses an internal 8 bit DAC to read a Voltage Identification (VID) code directly from the

NCP81040 Features

* Selectable 2

* , 3

* , or 4

* Phase Operation at Up to 1.5 MHz per Phase

* I2C Interface

* Enables Digital Programmability of Set Points and Read

* back of Monitored Values

* Logic

* Level PWM Outputs for Interface to External High Powe