®

SEMTECH ELECTRONICS LTD.

7809

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

Unit

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

8.65

9

9.35

V

8.6

9

9.4

Line Regulation

1)

-

-

180

mV

-

-

90

Load Regulation

1)

-

-

180

mV

-

-

90

Quiescent Current

-

-

8

mA

Quiescent Current Change

-

-

0.5

mA

-

-

1.3

Output Voltage Drift

-

-1

-

Output Noise Voltage

-

58

-

µV

Ripple Rejection

RR

56

-

-

dB

Dropout Voltage

-

2

-

V

Output Resistance

f = 1 KHz

-

15

-

mΩ

Short Circuit Current

-

250

-

mA

Peak Current

-

2.2

-

A

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

TO-220 Plastic Package