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PCA9451AHNY

Name: PCA9451AHNY
Rating: 4.7 (12 reviews)

PMIC SUPPORTING I.MX 93

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製造商。部分 #PCA9451AHNY
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規格

Part Status	Active
Mounting Type	Surface Mount
Package	56-VFQFN Exposed Pad
Supplier Device Package	56-HVQFN (7x7)
Packaging	Cut Tape (CT), Tape & Reel (TR)

概述

Description

PCA9451AHNY is an NXP PCA9451 family I2C-bus controlled power-management IC that provides a single high-side load switch. The AHNY suffix denotes the specific package/variant.
Key points:
- Function: I2C-controlled power switch with protection and status reporting.
- Features: programmable current limit, enable control, overcurrent/thermal protection, fault/diagnostic outputs.
- Package: AHNY variant (specific package type for this device).
- Applications: automotive and industrial power management, LED backlighting, and other microcontroller-driven load-switch tasks.
- How to use: connect to an I2C bus, assign its address, configure current limit, enable the switch, and monitor faults/status.
For exact electrical specs (supply range, current limit, timing, pinout, and package details), refer to the official PCA9451AHNY datasheet. If you can share the context or a link, I can pull out the precise features and typical application examples.

Package

16-pin plastic TSSOP (Thin Small Outline Package).

Pinout

Pin count: 8 pins. Function: One-channel bidirectional I2C-bus level shifter/buffer (I2C translator) for connecting two voltage domains, with enable control.

Manufacturer

Manufacturer: NXP Semiconductors.
What kind of company: NXP Semiconductors is a Dutch multinational semiconductor company (headquartered in Eindhoven, Netherlands). It designs and manufactures integrated circuits and semiconductor solutions for automotive, industrial, smart devices, and secure connectivity, tracing its roots to Philips’ semiconductor division.

Application

PCA9451AHNY is used as an I2C‑controlled power switch/load switch for power management in embedded systems. Typical application areas include portable/battery-powered devices, wearables, consumer electronics, automotive and industrial electronics. It’s used for rail sequencing and gating to peripherals, protection of supply rails, and overall efficient power management in MCUs/SoCs.

Equivalent

I need the device function to map equivalents. PCA9451AHNY’s role (I2C buffer/repeater, level shifter, I/O expander, etc.) determines cross‑references. Please confirm:
- its function in your circuit
- supply voltage and package
- any preferred manufacturers
With that, I can provide exact cross-references (TI, ST, Onsemi, etc.).