LX8587 Microsemi Corporation, LX8587 Datasheet - Page 8

• Manufacturer Part Number: LX8587
• Description: 3a Low Dropout Positive Regulators
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev. 2.0a, 2005-10-25
N o t e A :
10µF
(note A)
(Note A)
V
Output
V
IN
IN
TTL
10µF
+
FIGURE 4 - IMPROVING RIPPLE REJECTION
TM
* C1 improves ripple rejection.
X
frequency.
C
+
FIGURE 6 - 5V REGULATOR WITH SHUTDOWN
should be
V
IN
IN(MIN)
1k
IN
≈
R1 at ripple
= (
ADJ
1k
ADJ
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Intended
2N3904
365Ω 1%
V
R2
OUT
OUT
OUT
)
+
121Ω 1%
T Y P I C A L A P P L I C A T I O N S
V
R1
+
121Ω
365Ω
1%
1%
DROPOUT(MA
10µF*
C1
+
Integrated Products
®
Microsemi
150µF
100µF
V
OUT
5V
X)
10µF Tantalum or
100µF Aluminum
(Note A)
V
3A Low Dropout Positive Regulators
* Needed if device is far from filter capacitors.
*
IN
FIGURE 5 - 1.2V - 8V ADJUSTABLE REGULATOR
10µF
*V
C1*
FIGURE 7 - FIXED 3.3V OUTPUT REGULATOR
V
OUT
IN
+
=
IN
1.25V
IN
P
RODUCTION
⎛
⎜
⎝
1
+
ADJ
ADJ
R2
R1
⎞
⎟
⎠
D
R2
1k
ATA
S
HEET
OUT
OUT
121Ω 1%
Min. 15µF Tantalum or
100µF Aluminum capacitor.
May be increased without
limit. ESR must be less
than <400mΩ.
R1
3.3V
LX8587x-xx
+
100µF
V
C2
OUT
**
Page 8