LV8405V

No.A1340-4/6

Block Diagram

* Connect a kickback absorption capacitor as near as possible to the IC. Coil kickback may cause increase in VM line

voltage, and a voltage exceeding the maximum rating may be applied momentarily to the IC, which results in

deterioration or damage of the IC

Truth Table

IN1

(IN3)

IN2

(IN4)

OUT1

(OUT3)

OUT2

(OUT4)

Charge pump

Mode

H

H

Z

Z

ON

Standby

H

L

L

H

Reverse

L

H

H

L

Forward

L

L

L

L

Brake

- : denotes a don't care value. Z : High-impedance

• The charge pump is always activated as long as VCC is applied.

* All power transistors turn off and the motor stops driving when the IC is detected in low voltage or thermal protection

mode.

IN4

C1H

C1L

VG

SGND

OUT1

VCC

VM

OUT2

Charge pump

VCC+VM

Motor control

logic

OUT3

VM

OUT4

PGND

Thermal

Protection

Circuit

Reduced-

voltage

protection

circuit

Startup

control

block

IN3

IN2

IN1

Control voltage

2.8V to 5.5V

Motor power

supply

1.5V to 15V