ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Supply Voltage

18

V

Input Voltage

Differential Input Voltage

DC Output Current

2

A

Peak Output Current (non repetitive)

2.5

A

°C) for L6243

for L6243D

2

1.2

W

W

Storage and Junction Temperature

-55 to +150

°C

THERMAL DATA

Symbol

Description

L6243

L6243D

Unit

Thermal Resistance Junction to pin

Thermal Resistance Junction to pin floating in air

Thermal Resistance Junction to pin 16 cm

heat sink

12

62

36

14

50

°C/W

°C/W

°C/W

PIN FUNCTIONS

Name

Function

Power supply.

GND

Common Ground.

Voltage Reference.

ENABLE

Input. Logic low will disable IC.

PARK POWER

Input Power supply for the parking circuit.

CURRENT SENSE OUT

Current sense operational amplifier output.

ERROR AMP IN

Error amplifier inverting input.

ERROR AMP OUT

Error amplifier output.

SENSE IN

±

Input for external sense resistors.

OUT A, B

Outputs of the two Power Operational Amplifiers Connections for Voice coil Motor.

PARK

External input for parking. Low will activate the park procedure.

PARK VOLTAGE PROGRAM

Input to set the park voltage.

POWER FAIL THRESHOLD

Supply monitor threshold setting.

LOGIC SUPPLY SENSE

Logic Supply Sense.

5V FILTER

Capacitor connection to filter the logic supply ripple.

Power supply failure monitor output.

POR

Power on reset output. Low will signal to the controller the failure of the logic supply.

POR DELAY

Capacitor connection to set the power on reset delay.

WRITE DISABLE

Output for write disable. Low will disable the writing mode.

AMP–

Inverting input of the additional op amp.

AMP+

Non-inverting input of the additional op amp.

AMPOUT

Output of the additional op amp.

L6243-L6243D

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