O

O

O

V

I

I

Bias Current

R1

æ

ö

=

+

ç

÷

è

ø

INPUT

OUTPUT

COMMON

UA78L00

GND

+

-

Copyright © 2016, Texas Instruments Incorporated

0

2

4

6

8

10

12

14

16

18

20

0

1

2

3

4

5

6

7

D005

INPUT

OUTPUT

COMMON

UA78L00

0.1 F

0.33 F

1N4001 or

Equivalent

Copyright © 2016, Texas Instruments Incorporated

12

UA78L02A, UA78L05, UA78L05A, UA78L06A

UA78L08A, UA78L09A, UA78L10A, UA78L12A, UA78L15A

SLVS010V – JANUARY 1976 – REVISED NOVEMBER 2016

www.ti.com

Product Folder Links: UA78L02A UA78L05 UA78L05A UA78L06A UA78L08A UA78L09A UA78L10A UA78L12A

UA78L15A

Submit Documentation Feedback

Copyright © 1976–2016, Texas Instruments Incorporated

Typical Application (continued)

In many cases, a regulator powers a load that is not connected to ground, but instead, is connected to a voltage

source of opposite polarity (for example, operational amplifiers, level-shifting circuits, and so on). In these cases,

a clamp diode should be connected to the regulator output as shown in Figure 7. This protects the regulator from

output polarity reversals during startup and short-circuit operation.

Figure 7. Output Polarity-Reversal-Protection Circuit

8.2.3 Application Curves

Figure 8. Output Voltage vs Input Voltage

8.3 System Examples

8.3.1 Positive Regulator in Negative Configuration

8.3.2 Current Limiter Circuit

Figure 10 shows an example of using the UA78L00 as a current limiter. The output current limit is set by

Equation 1.

(1)