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LT1172 数据表(PDF) 15 Page - Linear Technology

部件名 LT1172
功能描述  100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators
Download  24 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1172 数据表(HTML) 15 Page - Linear Technology

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LT1170/LT1171/LT1172
15
117012fg
TYPICAL APPLICATIONS
Positive Buck Converter
C5*
100μF
VIN
1170/1/2 TA13
R3
470Ω
5V, 4.5A
D2
1N914
C1
1μF
VIN
VC
FB
VSW
LT1170
GND
REQUIRED IF INPUT LEADS ≥ 2"
PULSE ENGINEERING 92114
COILTRONICS 50-2-52
*
**
R1
3.74k
L1**
50μH
R4
10Ω
C3
2.2μF
D1
r
R2
1.24k
C2
1μF
C4
1000μF
100mA
MINIMUM
D3
OPTIONAL
OUTPUT
FILTER
C5
200μF
L2
4μH
+
+
+
+
Negative Boost Regulator
C4*
470μF
1170/1/2 TA14
R3
3.3k
C3
10μF
D1
C2
0.22μF
VIN
VC
FB
LT1170
GND
VIN
–15V
REQUIRED IF INPUT LEADS ≥ 2"
*
R2
1.24k
D2
R1
27k
VSW
L1
50μH
C1
1000μF
RO
(MINIMUM
LOAD)
VOUT
–28V, 1A
+
+
+
Driving High Voltage NPN
1170/1/2 TA15
D2
C1
SETS IB (ON)
SETS IB (OFF)
*
**
R2**
VIN
VSW
LT1170
GND
D1
Q1
R1*


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