[AP1016AEN]

MS1589-E-00

- 10 -

2014/01

9. Description

The AP1016 is suitable to drive stepper motor and voice coil motor. If the input signals are fed to IN1A, IN1B,

IN2A and IN2B, the output signals, OUT1A, OUT1B, OUT2A and OUT2B are defined by table 1.The

AP1016 includes Under Voltage Detection and Thermal Shut Down (TSD) circuits. The under voltage

detection circuit is monitoring the control voltage (VC), if the VC is less than the specified voltage(UVD), the

output of the H-bridge goes to high impedance. The thermal shut down circuit is monitoring the chip

temperature. If the temperature of the chip is more than the specified temperature, the output of the H-bridge

goes to high impedance. Under voltage detection and thermal shut down circuit has each hysteresis level.

Table 1. Control logic truth table (X: don’t care)

Protection detection

Input

Output

Motion

(Note 7)

UVDN

TSD

IN1A

IN2A

IN1B

IN2B

OUT1A

OUT2A

OUT1B

OUT2B

H

L

L

L

L

L

Brake

H

L

H

L

H

L

Forward (CW)

H

L

L

H

L

H

Reverse (CCW)

H

L

H

H

Hi-Z

Hi-Z

Standby

H

H

X

X

L

X

X

X

Note 7. Direction of Current

ON

VM

GND

OFF

ON

OFF

OUTA

OUTB

ON

VM

GND

OFF

ON

OFF

OUTA

OUTB

ON

VM

GND

OFF

ON

OFF

OUTA

OUTB

VM

GND

OFF

OFF

OUTA

OUTB

OFF

OFF

Forward (CW)

Reverse (CCW)

Brake

Standby