MC79XX datasheet(2/15 Pages) FAIRCHILD | 3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS

2 page

MC79XX (LM79XX) (KA79XX/A)

FIXED VOLTAGE REGULATOR (NEGATIVE)

ABSOLUTE MAXIMUM RATINGS (T

A=+25

°C, unless otherwise specified)

LM7905 ELECTRICAL CHARACTERISTICS

(VI = 10V, lO = 500mA, 0

°C ≤T

≤ +125°C, C

I =2.2

µF, C

O =1

µF, unless otherwise specified.)

* 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.

Characteristic

Symbol

Value

Unit

Input Voltage

-35

Thermal Resistance Junction-Cases

Junction-Air

RθJC

RθJA

°C / W

°C /W

Operating Temperature Range

TOPR

0 ~ +125

°C

Storage Temperature Range

TSTG

- 65 ~ +150

°C

Characteristic

Symbol

Test Conditions

Min

Typ

Max

Unit

TJ =+25

°C

- 4.8

- 5.0

- 5.2

Output Voltage

IO = 5mA to 1A, PO 15W

VI = -7 to -20V

- 4.75

-5.0

- 5.25

VI = -7 to -20V

IO=1A

VI = -8 to -12V

IO=1A

VI = -7.5 to -25V

VI= -8 to -12V

IO=1A

IO = 5mA to 1.5A

100

TJ =+25

°C

IO = 250 to 750mA

Quiescent Current

TJ =+25

°C

IO = 5mA to 1A

0.05

0.5

VI = -8 to -25V

0.1

0.8

Temperature Coefficient of VD

∆V

∆T

IO = 5mA

- 0.4

mV/

°C

Output Noise Voltage

f = 10Hz to 100KHz

TA =+25

°C

µV

Ripple Rejection

f = 120Hz, IO = -35V

∆V

I = 10V

Dropout Voltage

TJ=+25

°C

IO = 1A

Short Circuit Current

ISC

TJ =+25

°C, V

I = -35V

300

Peak Current

IPK

TJ =+25

°C

2.2

Load Regulation

∆V

Line Regulation

∆V

TJ =25

°C

Quiescent Current Change

∆I

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