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LTC1143CS Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1143CS
Description  Dual High Efficiency SO-16 Step-Down Switching Regulator Controllers
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1143CS Datasheet(HTML) 4 Page - Linear Technology

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4
LTC1143/LTC1143L
LTC1143L-ADJ
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD CURRENT (mA)
LTC1143 G02
1
70
90
95
100
10
100
1000
85
80
75
VIN = 5V
VIN = 10V
5V Output Efficiency
3.3V Output Efficiency
5V Efficiency vs Input Voltage
3.3V Efficiency vs Input Voltage
Load Regulation
Line Regulation
DC Supply Current
Supply Current in Shutdown
Operating Frequency vs VIN – VOUT
INPUT VOLTAGE (V)
0
100
98
96
94
92
90
88
86
84
82
80
4
8
1143 G03
12
16
ILOAD = 100mA
VOUT = 5V
ILOAD = 1A
LOAD CURRENT (mA)
LTC1143 G01
1
70
90
95
100
10
100
1000
85
80
75
VIN = 6V
VIN = 10V
INPUT VOLTAGE (V)
0
100
98
96
94
92
90
88
86
84
82
80
16
LTC1143 G04
4
8
12
VOUT = 3.3V
ILOAD = 1A
ILOAD = 100mA
INPUT VOLTAGE (V)
0
40
30
20
10
0
–10
–20
–30
–40
16
LTC1143 G05
4
8
12
VOUT = 5V
ILOAD = 1A
LOAD CURRENT (A)
0
20
0
–20
–40
–60
–80
–100
2.0
LTC1143 G06
0.5
1.0
1.5
2.5
RSENSE = 0.05Ω
VIN = 6V
VIN = 6V
VIN = 12V
VOUT = 5V
VOUT = 3.3V
VIN = 12V
INPUT VOLTAGE (V)
0
0
0.3
0.9
1.2
1.5
4
LTC1143 • G07
0.6
26
1.8
2.1
810
12
14
16
18
NOT INCLUDING
GATE CHARGE CURRENT
SLEEP MODE
ACTIVE MODE
PINS 5, 13
PER REGULATOR BLOCK
INPUT VOLTAGE (V)
0
20
18
16
14
12
10
8
6
4
2
0
2
10
14
LTC1143 G08
8
18
4
6
12
16
PER LTC1143/LTC1143L
REGULATOR BLOCK
PINS 5, 13
VSHUTDOWN = 2V
(VIN – VOUT) VOLTAGE (V)
0
12
LTC1143 G09
2
68
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
4
10
VOUT = 5V
70°C
0°C
25°C



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