UA7812CKCS datasheet(8/12 Pages) TI1

부품명	UA7812CKCS

상세설명	FIXED POSITIVE VOLTAGE REGULATORS

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R1

0.33

µF

Input

Output

µA78xx

0.1

µF

IO

R2

V

O + Vxx )

Vxx

R1 )

I

Q R2

A:

The following formula is used when Vxx is the nominal output voltage (output to common) of the fixed regulator:

OUT

IN

G

−VO

COM

+

−

VI

IL

µA78xx

+VO

+V

0.1

µF

0.33

µF

µA78xx

μA7800 SERIES

SLVS056O – MAY 1976 – REVISED AUGUST 2012

www.ti.com

uA7824 Electrical Characteristics (continued)

at specified virtual junction temperature, VI = 33 V, IO = 500 mA (unless otherwise noted)

μA7824C

PARAMETER

TEST CONDITIONS

TJ

(1)

UNIT

MIN

TYP

MAX

IO = 5 mA to 1.5 A

12

480

Output voltage regulation

25°C

mV

IO = 250 mA to 750 mA

4

240

Output resistance

f = 1 kHz

0°C to 125°C

0.028

Ω

Temperature coefficient of output voltage

IO = 5 mA

0°C to 125°C

–1.5

mV/°C

Output noise voltage

f = 10 Hz to 100 kHz

25°C

170

μV

Dropout voltage

IO = 1 A

25°C

2

V

Bias current

25°C

4.6

8

mA

VI = 27 V to 38 V

1

Bias current change

0°C to 125°C

mA

IO = 5 mA to 1 A

0.5

Short-circuit output current

25°C

150

mA

Peak output current

25°C

2.1

A

APPLICATION INFORMATION

Figure 2. Fixed-Output Regulator

Figure 3. Positive Regulator in Negative Configuration (VI Must Float)

Figure 4. Adjustable-Output Regulator

8

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