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© ANPEC Electronics Corp.

Rev . A. 1 - Dec. , 2 0 1 3

APX6 8 6 1

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9

Tr u t h Ta b le

Input

Output

IN-

IN+

OSC

CT

OUT1

OUT2

FG

RD

Mode

H

L

H

L

L

L

L

H

H

L

H

OFF

L

Rotation (Drive)

PWM ON

H

L

OFF

L

L

L

L

H

L

L

L

OFF

OFF

L

Rotation (Re-Circulation)

PWM OFF

H

L

L

L

L

L

H

-

H

L

L

OFF

OFF

Lock Mode

Note 4: OSC-H corresponds to OSC>SET and OSC-L corresponds to OSC<SET.

App lica t ion I n for m a t ion

The IC should be added a protection diode (D1) to pre-

vent the damage from the power reverse connection.

However, the protection diode will cause a voltage drop

on the supply voltage. The current rating of the diode must

be greater than the maximum output current. For the noise

reduction purpose, a capacitor (C1) must connect be-

tween VCC and GND. It is the suggestion that C1 should

be placed as close as possible to the device VCC pin

Input Protection Diode & Capacitor

HB Pin & Hall Input

1.3V voltage reference is for hall element bias. Wiring

needs to be shortened to prevent carrying of the noise.

Hall input amplifier has 20mV hysteresis. Then, we rec-

ommend the hall input level to be 60mV or over.

CT Capacitor

The capacitor that is connected from CT pin to GND de-

termines the shutdown time and restart time.

(

)

I

V

2

.

0

V

C

=

Time

Detection

Locked

CT1

CTH

CT

−

×

(

)

I

V

V

C

=

Time

Restart

CT1

CTL

CTH

CT

−

×

(

)

I

V

V

C

=

Time

Shutdown

CT2

CTL

CTH

CT

−

×

where:

C

For example:

V

Locked Detection Time = 1.7s

Restart Time = 1.1s

Shutdown Time = 11s

The value of charge capacitor is recommended from

0.47

µF to 1µF.

FG /RD Resistor

The value of the FG/RD resistor could be decided by the

following equation:

FG

FG

DC

FG

I

V

V

R

−

=

For example:

V

The value of resistor in the range of 1k

Ω to 10kΩ is

recommended.