LT1171 LINER [Linear Technology], LT1171 Datasheet - Page 13

• Manufacturer Part Number: LT1171
• Description: 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO S
V
IN
+
C5*
100 F
2.2 F
–15V
470 F
C3
V
C4*
IN
+
+
*
REQUIRED IF INPUT LEADS 2"
D3
U
50 H
L1
GND
V
SW
GND
LT1170
V
IN
LT1170
V
IN
Driving High Voltage NPN
V
Positive Buck Converter
Negative Boost Regulator
C
R3
470
V
LT1170
D1
V
GND
SW
C1
1 F
FB
V
C
IN
R3
3.3k
FB
C2
0.22 F
r
V
SW
**
R2**
R1
27k
R2
1.24k
*
REQUIRED IF INPUT LEADS 2"
PULSE ENGINEERING 92114
COILTRONICS 50-2-52
R2
1.24k
+
**
3.74k
*
R1
D1
D2
D2
SETS I
SETS I
C3
10 F
D1
R1*
+
C1
B
B
+
1170/1/2 TA15
(OFF)
(ON)
C2
1 F
1N914
D2
C1
1000 F
50 H
L1**
Q1
V
–28V, 1A
1000 F
OUT
LT1 170/LT1 171/LT1172
C4
OPTIONAL
OUTPUT
FILTER
+
R
(MINIMUM
LOAD)
O
1170/1/2 TA14
4 H
L2
C5
200 F
R4
10
100mA
MINIMUM
1170/1/2 TA13
5V, 4.5A
13