Datasheet

12
LT1108
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
6.5V-20V to 5V Step-Down Converter
5V to –5V Converter
S8 Package
8-Lead Plastic SOIC
N8 0393
0.045 ± 0.015
(1.143 ± 0.381)
0.100 ± 0.010
(2.540 ± 0.254)
0.065
(1.651)
TYP
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.020
(0.508)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.125
(3.175)
MIN

12
3
4
876
5
0.250 ± 0.010
(6.350 ± 0.254)


0.400
(10.160)
MAX
0.009 – 0.015
(0.229 – 0.381)
0.300 – 0.320
(7.620 – 8.128)
0.325
+0.025
–0.015
+0.635
–0.381
8.255
()
N8 Package
8-Lead Plastic DIP
Dimensions in inches (millimeters) unless otherwise noted.
U
PACKAGE
D
E
SC
R
I
PTI
O
LT/GP 0493 10K REV 0
 LINEAR TECHNOLOGY CORPORATION 1993
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
[phone]
●
FAX : [phone]
●
TELEX : 499-3977
1
2
3
4
0.150 – 0.157
(3.810 – 3.988)
8
7
6
5
0.189 – 0.197
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
0.016 – 0.050
0.406 – 1.270
0.010 – 0.020
(0.254 – 0.508)
× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
SO8 0393
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
SW2
SW1
LT1108 • TA03
I
LIM
SENSE
GND
220Ω
LT1108-5
MBRS130T3
330µF
L1*
300µH
+
–5V OUTPUT
150mA
33pF
+
V
IN

5V INPUT
* L1 = COILTRONICS CTX300-4
V
IN
* L1 = COILTRONICS CTX100-4
100Ω
100Ω
220Ω
ZETEX
ZTX-949

0.22Ω
SW2
SW1
I
LIM
SENSE
GND
LT1108-5
V
IN
47µF
+
1N5818
L1*
100µH
330µF
V
IN

6.5V
TO
20V
+
5V
OUT

200mA AT 6.5V
IN
500mA AT 8V
IN
LT1108 • TA04