LT1308 Просмотр технического описания (PDF) - Linear Technology
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LT1308 Datasheet PDF : 8 Pages
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LT1308
TYPICAL APPLICATION
Digital Camera Power Supply
2-4 Cell to 3.3V/175mA, 5V/175mA, 18V/10mA, – 10V/10mA
VIN
1.6V
TO 6V
C1 +
100µF
C8
1nF
8
L1A
N=1
10µH 1
C6
10µF
2
3
VIN
SW
SHDN
VC LT1308 FB
L1C 3
N = 0.3
R3
340k 4
R4
47k
C7
22nF
GND
R2
R1 2.08M
100k
L1B
N = 0.7
+
C2
100µF
D1
+
C1, C2, C3 = AVX TPS
C4, C5 = AVX TAJ
C6 = CERAMIC
D1, D2 = IR10BQ015
D3, D4 = BAT-85
L1 = COILTRONICS CTX02-13973
D2
5V
D3
175mA
3.3V
7
175mA
L1D +
C3
N = 3.5
100µF
6
6
+
L1E
N=2
5
D4
CCD BIAS
18V
10mA
C4
10µF
C5
10µF
CCD BIAS
–10V
10mA
1308 TA01
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
0°– 8° TYP
0.053 – 0.069
(1.346 – 1.752)
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
0.228 – 0.244
(5.791 – 6.197)
0.189 – 0.197*
(4.801 – 5.004)
8
7
6
5
1
2
34
0.150 – 0.157**
(3.810 – 3.988)
SO8 0695
RELATED PARTS
PART NUMBER
LTC®1163
LTC1174
LT1302
LT1304
LT1307
LT1316
LTC1440/1/2
LTC1516
LT1521
DESCRIPTION
Triple High Side Driver for 2-Cell Inputs
Micropower Step-Down DC/DC Converter
High Output Current Micropower DC/DC Converter
2-Cell Micropower DC/DC Converter
Single Cell Micropower 600kHz PWM DC/DC Converter
Micropower DC/DC Converter with Programmable Peak
Current Limit
Ultralow Power Single/Dual Comparators with Reference
2-Cell to 5V Regulated Charge Pump
Micropower Low Dropout Linear Regulator
COMMENTS
1.8V Minimum Input, Drives N-Channel MOSFETs
94% Efficiency, 130µA IQ, 9V to 5V at 300mA
5V/600mA from 2V, 2A Internal Switch, 200µA IQ
Low-Battery Detector Active in Shutdown, 5V at 200mA for 2 Cells
3.3V at 75mA from 1 Cell, MSOP Package
Works with High Source Impedance, 1.5V Minimum Input, Low-Battery
Detector Active in Shutdown, 33µA IQ, MSOP Package
2.8µA IQ, Adjustable Hysteresis
12µA IQ, No Inductors, 5V at 50mA from 3V Input
500mV Dropout, 300mA Current, 12µA IQ
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417q (408)432-1900
FAX: (408) 434-0507qTELEX: 499-3977q www.linear-tech.com
1308i LT/TP 0198 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1998
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