7809 datasheet(1/3 Pages) SEMTECH_ELEC

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Dated : 17/09/2016 Rev：01

®

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

Absolute Maximum Ratings (Ta = 25 OC)

Parameter

Symbol

Value

Unit

Input Voltage

VI

35

V

Thermal Resistance Junction-Cases

RθJC

5

O

C/W

Thermal Resistance Junction-Air

RθJA

65

O

C/W

Operating Temperature Range

TOPR

0 to + 125

O

C

Storage Temperature Range

TS

- 65 to + 150

O

C

Electrical Characteristics

(0 OC < TJ < 125 OC, IO = 500 mA, VI = 15 V, CI = 0.33 µF, CO = 0.1 µF, unless otherwise specified)

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Output Voltage

VO

TJ = 25 OC

8.65

9

9.35

V

5 mA  IO  1 A, PO  15 W

VI = 11.5 V to 24 V

8.6

9

9.4

Line Regulation

1)

Regline TJ = 25 OC

VI = 11.5 V to 25 V

-

180

mV

VI = 12 V to 17 V

-

90

Load Regulation

1)

Regload TJ = 25 OC

IO = 5 mA to 1.5 A

-

180

mV

IO = 250 mA to 750 mA

-

90

Quiescent Current

IQ

TJ = 25 OC

-

8

mA

Quiescent Current Change

IQ

IO = 5 mA to 1 A

-

0.5

mA

VI = 12 V to 26 V

-

1.3

Output Voltage Drift

VO/T IO = 5 mA

-

-1

-

mV/OC

Output Noise Voltage

VN

f = 10 Hz to 100 KHz, TA = 25 OC

-

58

-

µV

Ripple Rejection

RR

f = 120 Hz, VI = 13 V to 23 V

56

-

dB

Dropout Voltage

VDrop

IO = 1 A, TJ = 25 OC

-

2

-

V

Output Resistance

RO

f = 1 KHz

-

15

-

mΩ

Short Circuit Current

ISC

VI = 35 V, TA = 25 OC

-

250

-

mA

Peak Current

IPK

TJ = 25 OC

-

2.2

-

A

1) Load and line regulation are specified at constant junction temperature, Changes in Vo due to heating effects must be taken

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

TO-220 Plastic Package

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