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AH5775

Diodes
Part Number AH5775
Manufacturer Diodes
Description SINGLE PHASE MOTOR DRIVER
Published Feb 28, 2016
Detailed Description PRELIMINARY - CONFIDENTIAL AH5775 SINGLE PHASE MOTOR DRIVER WITH INTERNAL HALL EFFECT LATCH SENSOR Description The AH5...
Datasheet PDF File AH5775 PDF File

AH5775
AH5775

Overview
PRELIMINARY - CONFIDENTIAL AH5775 SINGLE PHASE MOTOR DRIVER WITH INTERNAL HALL EFFECT LATCH SENSOR Description The AH5775 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 (Front View) To simplify system circuit and minimize external components, the device integrates a stable high-sensitivity Hall effect sensor, voltage and temperature compensated internal references, amplifiers and the output H-bridge power switches with low RDSON.
To help protect the motor coil, the AH5775 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.
In case of overvoltage, the device shuts down the output drive and enters standby mode to help prevent overvoltage stress on the coil.
Over-temperature shutdown provides thermal protection for the device.
1.
VDD 2.
O1 3.
O2 4.
GND 1 234 TO94 The AH5775 is available in TO94 package.
Features • Supports single-phase full wave BLDC fan/motor drive • Built-in Hall effect sensor and input amplifier • Operating voltage: 2.
5V to 18V • Soft switching for low noise DC fan motor applications • Rotor Lock Protection (Lock detection, output shutdown and automatic restart) • Overvoltage shutdown • Thermal protection • No external timing capacitor - Reduces the numbers of external components required • Industry Standard TO94 Package • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) • Halogen and Antimony Free.
“Green” Device (Note 3) Applications • 5V / 12V / 15V Min.
BLDC Cooling Fans • Netbook/ Notebook and Desktop BLDC fans • Instruments Cooling Fans • Medium Voltage/ Low Power BLDC Motors Notes: 1.
No purposely added lead.
Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2.
See...


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