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LTC1147L Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1147L
Description  High Efficiency Step-Down Switching Regulator Controllers
Download  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1147L Datasheet(HTML) 4 Page - Linear Technology

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4
LTC1147-3.3
LTC1147-5/LTC1147L
sn1147 1147fds
LOAD CURRENT (A)
0
–100
–80
–60
–40
–20
0
20
0.5
1.0
1.5
2.0
LTC1147 • G03
2.5
FIGURE 1 CIRCUIT
RSENSE = 0.05Ω
VIN = 6V
VIN = 12V
INPUT VOLTAGE (V)
0
0
10
20
16
LTC1147 • G02
–10
–20
–40
4
812
–30
40
30
FIGURE 1 CIRCUIT
ILOAD = 1A
Efficiency vs Input Voltage
Line Regulation
Load Regulation
INPUT VOLTAGE (V)
0
80
82
86
88
90
100
94
4
8
LTC1147 • G01
84
96
98
92
12
16
FIGURE 1 CIRCUIT
ILOAD = 1A
ILOAD = 100mA
OPERATING FREQUENCY (kHz)
20
0
2
4
6
14
10
80
140
12
8
200
260
QP = 29nC
QP = 50nC
LTC1147 • G07
TEMPERATURE (
°C)
0
0
25
50
75
175
125
20
40
150
100
60
80
100
MAXIMUM
THRESHOLD
MINIMUM
THRESHOLD
LTC1147 • G09
OUTPUT VOLTAGE (V)
0
40
50
60
4
LTC1147 • G08
30
20
0
1
23
10
80
70
5
LTC1147-5
LTC1147-3.3
VSENSE
– = V
OUT
Gate Charge Supply Current
Operating Frequency
vs (VIN – VOUT)
INPUT VOLTAGE (V)
0
0
0.3
0.9
1.2
1.5
4
LTC1147 • G04
0.6
26
1.8
2.1
8
10
12
14
16
18
NOT INCLUDING
GATE CHARGE CURRENT
SLEEP MODE
ACTIVE MODE
(VIN – VOUT) VOLTAGE (V)
0
0.6
1.0
8
LTC1148 • G06
0.4
0
2
4
6
0.2
1.2
0.8
10
12
1.4
1.6
VOUT = 5V
0
°C
70
°C
25
°C
INPUT VOLTAGE (V)
0
0
2
6
8
10
20
14
4
8
10
18
LTC1147 • G05
4
16
18
12
26
12
14
16
VSHUTDOWN = 2V
(NOT AVAILABLE ON LTC1147L)
DC Supply Current
Supply Current in Shutdown
Current Sense Threshold Voltage
Off-Time vs VOUT
TYPICAL PERFOR A CE CHARACTERISTICS


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