BD6964F datasheet(4/17 Pages) ROHM

Part #	BD6964F

Description	Standard Single-phase Full wave Fan motor driver

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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Datasheet

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20.May.2014 Rev.002

TSZ02201-0H1H0B100280-1-2

TSZ22111・15・001

BD6964F

Block Diagram, Application Circuit, and Pin Assignment

Pin No.

Pin Name

Function

1

OUT2

Motor output

2

VCC

Power supply

3

H+

Hall input +

4

H-

Hall input -

5

AL

Lock alarm signal output

6

PWM

PWM signal input

7

OUT1

Motor output

8

GND

M

HALL

OSC : Internal reference oscillation circuit

TSD : Thermal shutdown(head rejection circuit)

Take a measure against Vcc

voltage rise due to reverse

connection of power supply

and back electromotive force.

Incorporates

soft

switching

function. Adjust at an optimum

value

because

gradient

of

switching of output waveform

depends

on

hall

element

output.

1k

to 5k

Speed control by PWM input is

enabled. Input frequency must

be 50kHz at the maximum.

This is an open drain output.

Connect a pull-up resistor.

VCC

H+

H-

OUT2

90k

2.8V

10k

1

2

3

4

8

7

6

5

OSC

Lock

Protection

Control

OUT1

PWM

AL

GND

+

-

+

-

+

TSD

P.8

P.5

P.6

P.9

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