SI-3018LSA
LOW-VOLTAGE, HIGH-CURRENT
1.8 V LINEAR REGULATOR
FUNCTIONAL BLOCK DIAGRAM
INPUT
1
INTERNAL
CONNECTION
2
8
OUTPUT
SUPPLY
3
THERMAL
PROTECTION
7
OUTPUT
SUB
+
ENABLE
4
GROUND
5
6
GROUND
Dwg. FK-019
1.5
ALLOWABLE PACKAGE POWER DISSIPATION in WATTS
56.5 mm x 56.5 mm
COPPER AREA ON
GLASS-EPOXY BOARD
Leads 7 and 8 are soldered to
the copper area and provide
heat sinking of the pass transis-
tor.
1.0
40 mm x 40 mm
COPPER AREA ON
GLASS-EPOXY BOARD
28 mm x 28 mm
COPPER AREA ON
GLASS-EPOXY BOARD
0.5
20 mm x 20 mm
COPPER AREA ON
GLASS-EPOXY BOARD
RECOMMENDED OPERATING CONDITIONS
Max. Input Voltage, V
I
................................................
3.5 V
Output Current, I
O
..........................................
0 A to 1.0 A
Output Junction Temperature Range, T
J
-20
°
C to +125
°
C
Ambient Temperature Range, T
A
..............
-30
°
C to +85
°
C
0
0
20
80
40
60
AMBIENT TEMPERATURE in
°
C
100
120
140
Dwg. GK-010-1
2
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2001 Allegro MicroSystems, Inc.
TM
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
