UCC283-3, UCC283-5, UCC283-ADJ, UCC383-3, UCC383-5, UCC383-ADJ

LOW DROPOUT 3A LINEAR REGULATOR FAMILY

SLUS215B − OCTOBER 1998 − REVISED FEBRUARY 2004

6

POST OFFICE BOX 655303

APPLICATION INFORMATION

PEAK

CURRENT

LIMIT

OVER−

CURRENT

THRESHOLD

OVERLOAD

OUTPUT

CURRENT

IO (NOM)

VO(NOM)

ROLICL

OUTPUT

VOLTAGE

TON

TON

32 TON

32 TON

TON

32 TON

Figure 1. UCC383 Short-Circuit Timing

A capacitive load on the regulator’s output appears as a short-circuit during start-up. If the capacitance is too

value of output capacitor that can be charged. For a constant current load the maximum output capacitance is

given as follows:

C

OUT(max) +

I

CL *

I

LOAD

t

ON

V

OUT

Farads

t

ON(adj) +

750, 000

C (

m Farad) microseconds

C

OUT(max) +

t

ON(sec)

R

LOAD

n

1

1

*

VOUT

I

CL

R

LOAD

Farads

(1)

(2)

(3)