8 / 8 page
3A L OW D ROPOUT P OSITIVE R EGULA TORS
LX8385-xx/8385A-xx/8385B-xx
PRODUCT DA T ABOOK 1996/1997
Copyright © 1999
Rev. 2.0a 10/00
8
P RODUCTION D ATA S HEET
TYPICAL APPLICA TIONS
LX8385/85A/85B
OUT
IN
ADJ
150µF
V
IN
R2
365
Ω
1%
10µF
R1
121
Ω
1%
C1
10µF*
* C1 improves ripple rejection.
X
C should be ≈ R1 at ripple
frequency.
V
OUT
5V
(Note A)
FIGURE 5 — 1.2V - 8V Adjustable Regulator
FIGURE 4 — Improving Ripple Rejection
LX8385/85A/85B
OUT
IN
ADJ
V
OUT**
V
IN
R1
121
Ω
R2
1k
C1*
10µF
* Needed if device is far from filter capacitors.
** V
OUT = 1.25V
1 +
C2
100µF
R2
R1
(Note A)
FIGURE 6 — 5V Regulator With Shutdown
(Note A)
LX8385/85A/85B
OUT
IN
ADJ
5V
V
IN
121
Ω
1%
10µF
100µF
365
Ω
1%
1k
1k
2N3904
TTL
Output
Note A:
V
IN (MIN) = (Intended VOUT) + (VDROPOUT (MAX))
FIGURE 7 — Fixed 3.3V Output Regulator
LX8385/85A/85B-33
OUT
IN
GND
3.3V
V
IN
10µF Tantalum
or 100µF Aluminum
Min. 15µF Tantalum or
100µF Aluminum capacitor.
May be increased without
limit. ESR must be less
than 50m
Ω.
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.
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
