LX8385 Microsemi Corporation, LX8385 Datasheet - Page 8

• Manufacturer Part Number: LX8385
• Description: 3 A Low Dropout Positive Regulators
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev. 2.0b, 2005-10-25
N o t e A :
(Note A)
V
IN
* C1 im proves ripple rejection.
X
frequency.
10µF
C
FIGURE 4 - IMPROVING RIPPLE REJECTION
should be
TM
+
V
IN
IN(MIN)
≈
R1 at ripple
LX8385x
=
ADJ
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
10µF Tantalum or
(
100µF Alum inum
Intended
10µF
(note A)
365
V
V
Output
V
R2
OUT
Ω
IN
IN
TTL
1%
FIGURE 7 - FIXED 3.3V OUTPUT REGULATOR
+
OUT
)
+
IN
FIGURE 6 - 5V REGULATOR W ITH SHUTDOW N
V
121
T Y P I C A L A P P L I C A T I O N S
DROPOUT(MA
R1
Ω
+
1k
IN
1%
Integrated Products Division
10µF*
LX8385x
C1
ADJ
Microsemi Inc.
®
LX8385x
150µF
1k
ADJ
V
X)
OUT
2N3904
(Note A)
O UT
3A Low Dropout Positive Regulators
V
* Needed if device is far from filter capacitors.
*
IN
FIGURE 5 - 1.2V - 8V ADJUSTABLE REGULATOR
10µF
*V
C1*
OUT
OUT
3.3V
Min. 15µF Tantalum or
100µF Alum inum capacitor. May
be increased without lim it. ESR
m ust be less than <400m
+
=
IN
1.25V
P
121
365
RODUCTION
1%
1%
Ω
Ω
⎛
⎜
⎝
1
LX8385x
+
+
ADJ
R2
R1
100µF
⎞
⎟
⎠
5V
D
R2
1k
Ω
ATA
.
S
HEET
OUT
121
R1
Ω
LX8385x-xx
1%
+
100µF
V
C2
OUT
**
Page 8