LM79XX datasheet(2/10 Pages) NSC | LM79XX Series 3-Terminal Negative Regulators

2 page

Absolute Maximum Ratings (Note 1)

If MilitaryAerospace specified devices are required

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Input Voltage

(Vo eb5V)

25V

(Vo eb12V and b15V)

35V

Input-Output Differential

(Vo eb5V)

25V

(Vo eb12V and b15V)

30V

Power Dissipation (Note 2)

Internally Limited

Operating Junction Temperature Range

0 Cto a125 C

Storage Temperature Range

65 Cto a150 C

Lead Temperature (Soldering 10 sec)

230 C

Electrical Characteristics Conditions unless otherwise noted IOUT e 500 mA CIN e 22 mF COUT e 1 mF

0 C s TJ s a125 C Power Dissipation s 15W

Part Number

LM7905C

Units

Output Voltage

Input Voltage (unless otherwise specified)

10V

Symbol

Parameter

Conditions

Min

Typ

Max

Output Voltage

TJ e 25 C

5mA s IOUT s 1A

475

525

P s 15W

(b20 s VIN s b7)

Line Regulation

TJ e 25 C (Note 3)

(b25 s VIN s b7)

215

(b12 s VIN s b8)

Load Regulation

TJ e 25 C (Note 3)

5mA s IOUT s 15A

100

250 mA s IOUT s 750 mA

Quiescent Current

TJ e 25 C1

Quiescent Current

With Line

Change

(b25 s VIN s b7)

With Load 5 mA s IOUT s 1A

Output Noise Voltage

TA e 25 C 10 Hz s f s 100 Hz

125

Ripple Rejection

f e 120 Hz

(b18 s VIN s b8)

Dropout Voltage

TJ e 25 C IOUT e 1A

IOMAX

Peak Output Current

TJ e 25 C

Average Temperature

IOUT e 5 mA

mV C

Coefficient of

0 C s TJ s 100 C

Output Voltage

Typical Applications (Continued)

Variable Output

TLH7340 – 2

Improves transient response and ripple rejection Do not increase beyond 50 mF

VOUT e VSET

R1aR2

Select R2 as follows

LM7905CT

300X

LM7912CT

750X

LM7915CT

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