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BA6901F

Datasheet

Datasheet

TSZ02201-0H1H0B100500-1-2

© 2012 ROHM Co., Ltd. All rights reserved.

18.DEC.2012 Rev.002

TSZ22111・15・001

www.rohm.com

●Application circuit example(Constant values are for reference)

Substrate design note

a) IC power, motor outputs, and motor ground lines are made as fat as possible.

b) IC ground (signal ground) line is common with the application ground except motor ground (i.e. hall ground etc.),

and arranged near to (–) land.

c) The bypass capacitor and/or Zenner diode are arrangement near to Vcc terminal.

d) H+ and H– lines are arranged side by side and made from the hall element to IC as shorter as possible,

because it is easy for the noise to influence the hall lines.

Fig.12 application circuit

Output Tr is equipped externally.

Provide a back electromotive force

regenerating current route by Zenner

diode for clamping.

Take a measure against Vcc voltage

rise generated by reverse connection

of current and back electromotive

force.

Set according to the amplitude

of hall element output and hall

input voltage range.

Output current detecting resistor. Pay

attention to wattage because large

current is present

Enables

speed

control

by

pulse input.

Incorporates

power

supply

clamp

circuit

and

enables

application of high voltage.

Current limit setting resistor.

Incorporates

charging

and

discharging pulse circuit and enables

speed

control

corresponding

to

ambient temperature with use of

thermistor.

Lock detection ON time and lock

detection OFF time can be set.

Phase compensating capacitor

when current is limited.

1

+

-

HALL

-

+

A2

+

-

2

3

4

5

6

7

8

REG

-

+

+

-

Lock

Detect

Auto

Restart

PWM

A1

CR

FG

AL

ALB

PWM

LD

CNF

GND

16

15

14

13

12

11

10

9

Vcc

A2

A1

CL

CS

H-

H+

TOUT

0.1μF

∼4.7μF

∼5Ω

5kΩ

∼200kΩ

0.47μF

∼4.7μF

0.001μF

∼0.1μF