Note 1: The tightening torque referred to in the above figure is a condition specified for the heat dissipation characteristics and not

a working condition to be met when mounting the heat sink.

Test Circuit

or

its equivalent

Pin Functions

No.

Symbol

Function

High voltage input.

14.5 V/300 mA regulator, with reverse current prevention.

3

EN1

Regulator 1 on/off control. High active.

Amplifier A noninverting input.

Amplifier A inverting input.

Amplifier A output.

7

GND

Substrate of the LA5612 (minimum potential).

Amplifier B output (5 V regulator supported by external NPN transistor).

Amplifier B inverting input (5 V regulator supported by external NPN transistor).

10

EN2

Regulator 2 and regulator 3 on/off control. High active.

11

5.05 V/350 mA regulator.

12

5.05 V/350 mA regulator.

13

Low-voltage input.

Aluminum heat sink

mounting conditions

Note 1

With plain washer and

silicone grease applied

Infinite heat sink

Ambient temperature, Ta — °C

No heat sink

Pd max — Ta

LA5612

No.5197 - 3/5