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