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LT1269CS Datasheet(PDF) 4 Page - Linear Technology

Part # LT1269CS
Description  4A High Efficiency Switching Regulators
PDF  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1269CS Datasheet(HTML) 4 Page - Linear Technology

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4
LT1271/LT1269
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
Switch Current Limit vs Duty Cycle
Switch Saturation Voltage
DUTY CYCLE (%)
0
9
12
40
1271/69 G01
6
3
0
10
20 30
50 60 70 80 90 100
–55
°C
125
°C
25
°C
SWITCH CURRENT (A)
0
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1
23
4
1271/69 G02
5
0.2
0
TJ = 25°C
S
APPLICATI
TYPICAL
C1
0.22
µF
L1**
100
µH
D1
MBR340
1271/69 TA04
LT1271
VSW
FB
GND
VIN
VC
C2
200
µF
* REQUIRED IF INPUT LEADS
≥ 2"
** COILTRONICS CTX100-2-52
×
×
R1
11.3k
Q1
2N3906
OPTIONAL
OUTPUT
FILTER
L2
C3
R3
2.2k
VIN
–12V
VOUT
12V, 1.5A
C4*
200
µF
OPTIONAL
INTPUT
FILTER
L3
R2
1.24k
+
+
Negative-to-Positive Buck-Boost Converter



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