LA8385 Datasheet, PDF (8/8 Pages) List of Unclassifed Manufacturers – 3A LOW DROPOUT POSITIVE REGULATORS

PRODUCT DATABOOK 1996/1997
LX8385-xx/8385A-xx/8385B-xx
3A LOW DROPOUT POSITIVE REGULATORS
PRODUCTION DATA SHEET
TYPICAL APPLICATIONS
(Note A)
V_IN
10µF
LX8385/85A/85B
IN
OUT
ADJ
R1
121Ω
1%
5V
V_OUT
150µF
* C1 improves ripple rejection.
X_C should be ≈ R1 at ripple
frequency.
R2
365Ω
1%
C1
10µF*
FIGURE 4 — Improving Ripple Rejection
V_IN
(Note A)
LX8385/85A/85B
IN
OUT
ADJ
C1*
10µF
R2
1k
R1
121Ω
V_OUT**
C2
100µF
* Needed if device is far from filter capacitors.
** V_OUT = 1.25V
1
+
R2
R1
FIGURE 5 — 1.2V - 8V Adjustable Regulator
V_IN
(Note A)
TTL
Output
LX8385/85A/85B
IN
OUT
ADJ
10µF
1k
2N3904
1k
121Ω
1%
5V
100µF
365Ω
1%
FIGURE 6 — 5V Regulator With Shutdown
V_IN
10µF Tantalum
or 100µF Aluminum
LX8385/85A/85B-33
IN
OUT
GND
3.3V
Min. 15µF Tantalum or
100µF Aluminum capacitor.
May be increased without
limit. ESR must be less
than 50mΩ.
FIGURE 7 — Fixed 3.3V Output Regulator
Note A: V = (Intended V ) + (V
)
IN (MIN)
OUT
DROPOUT (MAX)
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.
8
Copyright © 1999
Rev. 2.0a 10/00