LT1108
U
O
TYPICAL APPLICATI S
5V to –5V Converter
6.5V-20V to 5V Step-Down Converter
V
IN
L1*
ZETEX
5V INPUT
V
IN
100µH
5V
0.22Ω
OUT
200mA AT 6.5V
500mA AT 8V
IN
ZTX-949
6.5V
TO
220Ω
IN
20V
100Ω
+
I
V
LIM
IN
100Ω
220Ω
47µF
1N5818
+
SW1
330µF
+
V
I
LIM
33pF
IN
LT1108-5
SW1
SENSE
SW2
LT1108-5
GND
L1*
300µH
LT1108 • TA04
SENSE
SW2
GND
+
MBRS130T3
330µF
* L1= COILTRONICS CTX100-4
–5V OUTPUT
150mA
* L1= COILTRONICS CTX300-4
LT1108 • TA03
U
PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
N8 Package
8-Lead Plastic DIP
0.400
(10.160)
MAX
0.130 ± 0.005
0.300 – 0.320
0.045 – 0.065
(3.302 ± 0.127)
(1.143 – 1.651)
(7.620 – 8.128)
8
1
7
6
5
4
0.065
(1.651)
TYP
0.250 ± 0.010
(6.350 ± 0.254)
0.009 – 0.015
(0.229 – 0.381)
0.125
0.020
(0.508)
MIN
(3.175)
MIN
+0.025
–0.015
2
3
0.045 ± 0.015
(1.143 ± 0.381)
0.325
N8 0393
+0.635
–0.381
8.255
(
)
0.100 ± 0.010
(2.540 ± 0.254)
0.018 ± 0.003
(0.457 ± 0.076)
S8 Package
8-Lead Plastic SOIC
0.189 – 0.197
(4.801 – 5.004)
0.010 – 0.020
(0.254 – 0.508)
7
5
8
6
× 45°
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0.008 – 0.010
(0.203 – 0.254)
0°– 8° TYP
0.228 – 0.244
0.150 – 0.157
(5.791 – 6.197)
(3.810 – 3.988)
0.016 – 0.050
0.406 – 1.270
0.050
(1.270)
BSC
0.014 – 0.019
(0.355 – 0.483)
SO8 0393
1
3
4
2
LT/GP 0493 10K REV 0
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
●
●
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
LINEAR TECHNOLOGY CORPORATION 1993
Linear [ Linear ]
