DatasheetsPDF.com

AH5795

Diodes
Part Number AH5795
Manufacturer Diodes
Description SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER
Published Sep 4, 2012
Detailed Description AH5795 SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER Description The AH5795 is a single chip solution for dr...
Datasheet PDF File AH5795 PDF File

AH5795
AH5795

Overview
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.
Over temperature shutdown provides thermal protection for the device.
A Tachometer output is provided by open-drain Frequency Generator (FG) Pin which allows external interface to monitor motor rotation or speed.
The FG output is the magnetic change frequency.
The AH5795 is available in space saving and low profile TSOT23-6 and DFN2020C-6 packages.
TSOT23-6 (Top View) PWM Vdd O1 1 2 3 6 5 4 FG O2 Vss DFN2020C-6 www.
DataSheet.
net/ 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 applications Rotor Lock Protection (Lock detection, output shutdown and automatic re-start) Toff clear when PWM is low for greater than 65ms Thermal protection Tachometer (FG) output No external timing capacitor - Reduces the numbers of external components required Low profile package: TSOT23-6 and DFN2020C-6 “Green” Molding Compound (No Br, Sb) (Note 1) Applications • • • • 3.
3V / 5V BLDC Cooling Fans Netbook/ Notebook BLDC fans Instruments cooling fans Low Voltage/ Low Power BLDC Moto...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)