LX8383 Microsemi Corporation, LX8383 Datasheet - Page 7

• Manufacturer Part Number: LX8383
• Description: 7.5 A Low Dropout Positive Regulators
• Manufacturer: Microsemi Corporation

Copyright © 1996
Rev. 1.0
Note A: V
(Note A)
* C1 improves ripple rejection.
12/96
V
X
frequency.
10µF
IN
C
should be
IN (MIN)
FIGURE 4 — IMPROVING RIPPLE REJECTION
LX8383/83A/83B
IN
R1 at ripple
= (Intended V
ADJ
or 100µF Aluminum
10µF Tantalum
OUT
OUT
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Cyrix is a registered trademark and 6x86 is a trademark of Cyrix Corporation. K5 is a trademark of AMD.
365
7 . 5 A L
) + (V
Output
1%
R2
(Note A)
V
IN
V
TTL
IN
P
DROPOUT (MAX)
R1
121
1%
R O D U C T I O N
FIGURE 6 — 5V REGULATOR WITH SHUTDOWN
FIGURE 7 — FIXED 3.3V OUTPUT REGULATOR
O W
T Y P I C A L A P P L I C A T I O N S
Pentium is a registered trademark of Intel Corporation.
C1
10µF*
10µF
1k
D
)
LX8383/83A/83B-33
IN
R O P O U T
LX8383/83A/83B
IN
5V
1k
150µF
LX8383-xx/8383A-xx/8383B-xx
V
GND
OUT
ADJ
2N3904
P
O S I T I V E
D
OUT
OUT
A T A
(Note A)
V
IN
* Needed if device is far from filter capacitors.
** V
S
FIGURE 5 — 1.2V - 8V ADJUSTABLE REGULATOR
R
121
1%
365
1%
OUT
E G U L A T O R S
H E E T
Min. 15µF Tantalum or
100µF Aluminum capacitor.
May be increased without
limit. ESR must be less
than 50m .
C1*
10µF
= 1.25V 1 +
LX8383/83A/83B
IN
3.3V
100µF
5V
ADJ
R2
1k
R2
R1
OUT
R1
121
C2
100µF
V
OUT
**
7