AH284 Series

NRND = Not Recommended for New Design

Catalog

NRND = Not Recommended for New Design

Part	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]	Technology	Function	Applications	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output	Interface	Mounting Type	Voltage - Load [Max]	Voltage - Load [Min]	Package / Case	Motor Type - AC, DC
Diodes Inc AH284-PG-B	4-SIP	3.8 V	20 V	Power MOSFET	Driver - Fully Integrated Control and Power Stage	Fan Motor Driver	Low Side (2)	150 °C	-40 °C	500 mA	On/Off	Through Hole	20 V	3.8 V	4-SSIP	Brushless DC (BLDC)

Catalog

NRND = Not Recommended for New Design

Key Features

• Single-chip solution

• Operating Voltage: 3.8V to 20V

• Built-in Hall sensor and input amplifier

• Rotor Lock Protection (Lock detection, output shutdown and automatic re-start)

• Built-in Zener protection for output driver

• Average output current up to 500mA

• Packages: SIP-4L and SOT89-5L

• Green Molding Compound

Description

The AH284 is a single-chip solution for driving two-coil brushless direct current (BLDC) fans and motors. The device includes a Hall-effect sensor, dynamic offset correction and two complementary open-drain output drivers with internal Zener diode protection. To help protect the motor coils, the AH284 provides Rotor Lock Protection which shuts down output drives if rotor lock is detected. The device automatically re-starts when the rotor lock is removed. The AH284 is available in SIP4 and SOT89-5L packages.