Specification	NCP81231MNTXG

Clock Sync	False
Control Features	Enable, Current Limit
Duty Cycle (Max) [Max]	100 %
Frequency - Switching [Max]	1.2 MHz
Frequency - Switching [Min]	150 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	100 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	32-VFQFN Exposed Pad
Serial Interfaces	I2C
Supplier Device Package	32-QFN (5x5)
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	28 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

NCP81231 Series

Buck Controller, USB Power Delivery and Type-C Applications

Part	Serial Interfaces	Control Features	Frequency - Switching [Min]	Frequency - Switching [Max]	Function	Clock Sync	Output Type	Output Phases	Output Configuration	Duty Cycle (Max) [Max]	Synchronous Rectifier	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Supplier Device Package	Mounting Type	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Package / Case
ON Semiconductor NCP81231MNTXG	I2C	Current Limit Enable	150 kHz	1.2 MHz	Step-Down		Transistor Driver	1	Positive	100 %		4.5 V	28 V	32-QFN (5x5)	Surface Mount	1	-40 °C	100 °C	Buck	32-VFQFN Exposed Pad

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.33
		10	$ 2.09
		25	$ 1.98
		100	$ 1.58
		250	$ 1.38
		500	$ 1.34
		1000	$ 1.07
	Digi-Reel®	1	$ 2.33
		10	$ 2.09
		25	$ 1.98
		100	$ 1.58
		250	$ 1.38
		500	$ 1.34
		1000	$ 1.07
	Tape & Reel (TR)	2500	$ 1.03
		5000	$ 0.99
Newark	Each	2500	$ 1.05
		5000	$ 1.02
ON Semiconductor	N/A	1	$ 0.90

Description

General part information

NCP81231 Series

The NCP81231 USB Power Delivery (PD) Controller is a synchronous step down controller optimized for USB-PD type C solutions. They are ideal for docking station, car chargers, desktop, and monitor applications. The NCP81231 utilizes an I2C interface that can interface to a uC to meet USB-PD timing, slew rate, and voltage requirements. The NCP81231 operates from 4.5V to 28V