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AH5795 - SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER

Description

The AH5795 is a single chip solution for driving single-coil brushless direct current (BLDC) fans and motors.

The integrated full-bridge driver output stage uses soft switching to minimize audible switching noise and electromagnetic interference (EMI) providing a low noise solution.

Features

  • Supports single-coil full-wave BLDC fan drivers Built-in Hall sensor and input amplifier Operating voltage: 1.8V to 6V Speed control methods o Vdd voltage speed control (PWM pin tied to Vdd) o PWM signal speed control via PWM pin Soft switching for low noise DC fan motor.

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Datasheet preview – AH5795

Datasheet Details

Part number AH5795
Manufacturer DIODES
File Size 276.70 KB
Description SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER
Datasheet download datasheet AH5795 Datasheet
Additional preview pages of the AH5795 datasheet.

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Full PDF Text Transcription

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AH5795 SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER Description The AH5795 is a single chip solution for driving single-coil brushless direct current (BLDC) fans and motors. The integrated full-bridge driver output stage uses soft switching to minimize audible switching noise and electromagnetic interference (EMI) providing a low noise solution. Pin Assignments (Top View) FG Vss O2 1 2 3 6 5 4 PWM Vdd O1 NEW PRODUCT Motor speed can be controlled by either changing the duty ratio of the PWM signal at the PWM pin or by varying the supply voltage at Vdd pin. To help protect the motor coil, the AH5795 provides Rotor Lock Protection which shuts down the output drive if rotor lock is detected. The device automatically re-starts when the rotor lock is removed.
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