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AM4961 (NRND)

NRND = Not Recommended for New Design

Single Phase 12V BLDC Smart Fan and Motor Driver

Datasheet

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Description

The AM4961 is a full wave driver IC with PWM control function. It is used for single phase motor and is capable of speed control by changing output duty cycle.

Feature(s)

· Built-in Hall Bias Circuit · Built-in PWM Speed Control Circuit · Built-in Minimal Speed Setup Circuit · Rotation Speed Indication (FG) · Rotation or Lock State Indication (RD) · Built-in Thermal Shutdown Circuit · Lock Protection · Output Current Limit

Application(s)

· CPU Cooler Fan in PC · Brushless DC Motor Driver

Specifications & Technical Documents

Product Parameters

Average OutputDrive Current (mA)	-
Frequency Generator (FG) and Rotation Detect	FG and RD
Hall Bias Voltage (V)	1.25
Lock Detect, Shut-Down and Auto Start	Yes
Minimum Speed Setting	Yes
Operating Ambient Temperature (°C)	-30 to 90
Operating Voltage (V)	3.5 to 16
Other Protection Features	Over Current Limit Thermal Shutdown
Peak Output Current (mA)	1000
Reference Voltage Output (V)	6
Speed Control	PWM or VDD
Speed Control Slope Adjust	-
SupplyCurrent (mA)	8

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
PCN-2707	2024-12-30	2025-06-30	Product End of Life (EOL)
PCN-2672	2024-03-11	2024-09-07	Device End of Life (EOL)