NCP81231MNTXG

$2.77

Description：IC REG CTLR USB-PD 32QFN
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:4c518d747c45 Category: DC DC Switching Controllers Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：IC REG CTLR USB-PD 32QFN
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：4.5V ~ 28V
Frequency - Switching：150kHz ~ 1.2MHz
Duty Cycle (Max)：100%
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：I2C
Control Features：Current Limit, Enable
Operating Temperature：-40°C ~ 100°C (TA)
Mounting Type：Surface Mount
Package / Case：32-VFQFN Exposed Pad
Supplier Device Package：32-QFN (5x5)
Grade：-
Qualification：-

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NCP81231MNTXG

Overview

The NCP81231MNTXG is a high-resolution buck switching controller from onsemi, designed for USB-PD applications. It features a single output with a synchronous rectifier topology and operates within a switching frequency range of 150 kHz to 1.2 MHz. The device supports a maximum duty cycle of 100% and delivers an output voltage of 5 V at 97 mA. It functions within a supply voltage range of 4.5 V to 28 V and handles up to 4.1 W of output power. The component is housed in a 32-QFN (5x5 mm) package and operates between -40°C and +100°C.

Feature Summary

Integrates I2C configuration interface for precise control and monitoring
Supports USB Power Delivery standards with dedicated control logic
Features synchronous buck topology with integrated driver capabilities

Applications

USB Power Delivery compliant power supplies
Portable electronic device charging systems
Compact DC-DC conversion modules requiring I2C control

Procurement Notes

Verify the NRND status before integration, as this component is not recommended for new designs. Confirm that the 32-QFN footprint matches your PCB layout constraints. Ensure compatibility with the required I2C bus speeds and voltage levels. Check for alternative components if long-term supply stability is critical for the product lifecycle.

Selection Notes

Select this controller when USB-PD compliance and I2C configurability are required in a compact form factor. It is suitable for low-power applications needing precise voltage regulation. Consider the thermal performance within the QFN package for your specific ambient conditions. Evaluate the switching frequency range against EMI requirements and passive component sizes.

Part Context

This part belongs to the NCP81231 series of high-resolution buck controllers. It is distinct from multi-phase variants like the NCP81232 or other single-phase models in the family. The series focuses on providing flexible control interfaces for modern power delivery standards.