2

Co

0.1μF

TO-220 Plastic-Encapsulate Voltage Regulator

L7809 Three-terminal positive voltage regulator

FEATURES

Maximum output current IOM: 1.5 A

Output voltage Vo: 9 V

Continuous total dissipation

PD:1.5 W (Ta = 25

℃ )

15 W (TC = 25

℃ )

ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)

Parameter

Symbol

Value

Unit

Input Voltage

Vi

35

V

Thermal

Resistance from Junction to Ambient

RθJA

83.3

℃/W

Thermal

Resistance from Junction to Case

RθJC

8.3

℃/W

Operating Junction Temperature Range

TOPR

0

~+150

℃

Storage Temperature Range

TSTG

-

55~+150

℃

ELECTRICAL CHARACTERISTICS AT SPECIFIED VIRTUAL JINCTION TEMPERATURE

(Vi=16V, Io=500mA,Ci=0.33μF,Co=0.1μF, unless otherwise specified)

Parameter

Symbol

Test conditions

MIN

TYP

MAX

UNIT

25

℃

8.65

9

9.35

V

Output voltage

Vo

11.5V≤V i≤24V, Io= 5mA-1A,

P≤15W

0-125

℃

8.55

9

9.45

V

Io=5mA-1.5A

25

℃

12

180

mV

Load Regulation

∆Vo

Io=250mA-750mA

25

℃

4

90

mV

11.5V≤V i≤27V

25

℃

7

180

mV

Line regulation

∆Vo

13V≤V i≤19V

25

℃

2

90

mV

Quiescent Current

Iq

25

℃

4.3

8

mA

11.5V≤V i≤27V

0-125

℃

1

mA

Quiescent Current Change

∆Iq

5mA≤IO≤1A

0-125

℃

0.5

mA

Output voltage drift

Vo/ T

△△

IO=5mA

0-125

℃

-1

mV/℃

Output Noise Voltage

VN

10Hz≤f≤100KHz

25

℃

60

uV

Ripple Rejection

RR

12V≤V i≤22V,f=120Hz

0-125

℃

55

70

dB

Dropout Voltage

Vd

Io=1A

25

℃

2

V

Output resistance

RO

f=1KHZ

25

℃

18

mΩ

Short Circuit Current

Isc

25

℃

400

mA

Peak Current

Ipk

25

℃

2.2

A

TYPICAL APPLICATION

Vi

1

3

Vo

UTC

Ci

0.33μF

TO-220-3L

1. IN

2. GND

3. OUT

CJ7809

1

E,Oct,2014