LTC1159 查看數據表（PDF） - Linear Technology
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LTC1159 Datasheet PDF : 20 Pages
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LTC1159
LTC1159-3.3/LTC1159-5
TYPICAL APPLICATIO
VIN = 12V
5V OR 3.3V
SHUTDOWN
Q3
TP0610L
20k
CT
390pF
510k
5.1V
1N5993
*DALE TJ4-100-1µ
**IRC LR2512-01-R050-J
1N4148
0.15µF
1
P-GATE
16
CAP
2
VIN
15
SHDN2
0.1µF
1N5818
3
VCC
14
EXTVCC
4
LTC1159
13
P-DRIVE N-GATE
5
3.3µF
12
VCC
PGND
6
CT
11
SGND
7
ITH
6800pF 8 SENSE–
VFB 10
(SHDN1)
SENSE+ 9
1k
1000pF
100Ω
100Ω
Q1
Si9435
+
0.1µF
330µF
35V
NICHICON
Q2
Si9410
MBRS140
L*
100µH
200pF 10.5k
Q4
90.5k
2N7002
150µF
16V × 2
OS-CON
OUTPUT
–12V/1A
3
1
RSENSE**
2 0.05Ω
4
1159 F15
Figure 15. High Efficiency 12V to –12V 1A Converter
RELATED PARTS
PART NUMBER DESCRIPTION
LTC1628
2-Phase, Dual Step-Down Controller
LTC1702
550kHz Dual, 2-Phase Step-Down Controller
LTC1735
Synchronous Step-Down Controller
LTC1773
550kHz Synchronous Step-Down Controller
LTC1778
LTC1876
No RSENSETM Step-Down Controller
Triple Output, 2-Phase Controller
No RSENSE is a trademark of Linear Technology Corporation.
COMMENTS
VIN ≤ 36V, Minimum CIN, Current Mode
Minimum CIN, No Sense Resistor Required, VIN ≤ 7V
3.5V ≤ VIN ≤ 36V, 0.8V ≤ VOUT ≤ 6V, Synchronizable
2.65V ≤ VIN ≤ 8.5V, 0.8V ≤ VOUT ≤ VIN, Synchronizable to 750kHz, MS10
No Sense Resistor Required, tON(MIN) ≤ 100ns, Current Mode, GN16
Two, 2-Phase Step-Down Controllers and Step-Up DC/DC Converter in One IC
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
1159fa LT/TP 0801 2K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1994
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