LX8385-05 Microsemi Corporation, LX8385-05 Datasheet - Page 8

• Manufacturer Part Number: LX8385-05
• Description: 3 A LOW DROPOUT POSITIVE REGULATORS
• Manufacturer: Microsemi Corporation

LX8385-xx/8385A-xx/8385B-xx
8
Note A: V
(Note A)
* C1 improves ripple rejection.
V
X
frequency.
10µF
IN
C
should be
FIGURE 4 — Improving Ripple Rejection
IN (MIN)
LX8385/85A/85B
IN
R1 at ripple
= (Intended V
ADJ
or 100µF Aluminum
10µF Tantalum
OUT
OUT
PRODUCTION DATA - Information contained in this document is proprietary to Linfinity, and is current as of publication date. This document
may not be modified in any way without the express written consent of Linfinity. Product processing does not necessarily include testing of
all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
365
) + (V
3 A L
1%
R2
V
Output
IN
(Note A)
DROPOUT (MAX)
P
R1
121
1%
V
TTL
O W
IN
R O D U C T I O N
FIGURE 6 — 5V Regulator With Shutdown
FIGURE 7 — Fixed 3.3V Output Regulator
T Y P I C A L A P P L I C A T I O N S
D
C1
10µF*
R O P O U T
)
10µF
LX8385/85A/85B-33
IN
1k
5V
LX8385/85A/85B
IN
150µF
V
1k
OUT
GND
ADJ
P
2N3904
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
R
FIGURE 5 — 1.2V - 8V Adjustable Regulator
S
E G U L A T O R S
121
1%
365
1%
OUT
H E E T
C1*
10µF
Min. 15µF Tantalum or
100µF Aluminum capacitor.
May be increased without
limit. ESR must be less
than 50m .
= 1.25V 1 +
LX8385/85A/85B
IN
3.3V
100µF
5V
ADJ
R2
1k
R2
R1
OUT
R1
121
C2
100µF
Copyright © 1999
V
Rev. 2.0a 10/00
OUT
**