Dated : 14/09/2016 Rev: 01

®

SEMTECH ELECTRONICS LTD.

7812R

3-terminal 1 A positive voltage regulator

Features

 Output Current up to 1 A

 Thermal Overload Protection

 Short Circuit Protection

 Output Transistor Safe Operating Area Protection

Parameter

Symbol

Value

Units

Input Voltage

35

V

Thermal Resistance Junction-Cases

5

O

C/W

Thermal Resistance Junction-Air

65

O

C/W

Operating Temperature Range

0 to + 125

O

C

Storage Temperature Range

- 65 to + 150

O

C

Electrical Characteristics

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Output Voltage

11.5

12

12.5

V

11.4

12

12.6

Line Regulation

1)

Regline

-

-

240

mV

-

-

120

Load Regulation

1)

Regload

-

-

240

mV

-

-

120

Quiescent Current

-

-

8

mA

Quiescent Current Change

-

-

0.5

mA

-

-

1

Output Voltage Drift

-

-1

-

Output Noise Voltage

-

76

-

µV

Ripple Rejection

RR

55

-

-

dB

Dropout Voltage

-

2

-

V

Output Resistance

f = 1 KHz

-

18

-

mΩ

Short Circuit Current

-

230

-

mA

Peak Current

-

2.2

-

A

into account separately. Pulse testing with low duty is used.