0

6.25

12.5

18.75

25

31.25

37.5

42.5

1.2

1.22

1.24

1.26

1.28

1.3

D001

40GC

0GC

25GC

125GC

2

OUT

REF

ADJ

2

1

R

V

V

1

(I

R )

R

æ

ö

=

´

+

+

´

ç

÷

è

ø

LM317L

www.ti.com

SLCS144E – JULY 2004 – REVISED OCTOBER 2014

9.2.2.4 Adjustment Terminal Capacitor

The optional adjustment pin capacitor will improve ripple rejection by preventing the amplification of the ripple.

9.2.2.5 Design Options and Parameters

Common Linear Regulator designs are concerned with the following parameters:

•

Input voltage range

•

Input capacitor range

•

Output voltage

•

Output current rating

•

Output capacitor range

•

Input short protection

•

Stability

•

Ripple rejection

9.2.2.6 Output Voltage

(3)

9.2.2.7 Ripple Rejection

9.2.2.8 Input Short Protection

If the input is shorted to ground during a fault condition, protection diodes provide measures to prevent the

possibility of external capacitors discharging through low-impedance paths in the IC. By providing low-impedance

of the regulator.

9.2.3 Application Curves

Figure 2. Adjustment Voltage Relative to Output Over Temperature

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