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LTC1771 датащи(PDF) 4 Page - Linear Technology

номер детали LTC1771
подробное описание детали  10mA Quiescent Current High Efficiency Step-Down DC/DC Controller
PDF  16 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LTC1771 датащи(HTML) 4 Page - Linear Technology

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LTC1771
TYPICAL PERFOR A CE CHARACTERISTICS
Load Regulation
Active Mode Quiescent Current
vs Input Voltage
Sleep Quiescent Current
vs Input Voltage
LOAD CURRENT (A)
0
–0.2
0
VIN = 15V
VIN = 5V
0.4
1.5
1771 G04
–0.4
–0.6
0.5
1.0
2.0
–0.8
–1.0
0.2
Burst Mode OPERATION
DISABLED
Burst Mode
OPERATION
ENABLED
FIGURE 1 CIRCUIT
INPUT VOLTAGE (V)
0
100
150
16
1771 G05
50
0
4
8
10
20
200
12
2
6
18
14
TA = –50°C
TA = 100°C
TA = 25°C
INPUT VOLTAGE (V)
0
4
8
12
2
6
10
4
8
12
16
1771 G06
20
2
0
6
10
14
18
TA = –50°C
TA = 25°C
TA = 100°C
Shutdown Quiescent Current
vs Input Voltage
Run/SS Current vs Input Voltage
Current Sense Voltage
vs Temperature
INPUT VOLTAGE (V)
0
4
6
16
1771 G07
2
0
4
8
10
20
8
12
2
6
18
14
TA = –50°C
TA = 100°C
TA = 25°C
INPUT VOLTAGE (V)
0
3
4
5
16
1771 G08
2
1
0
4
8
12
218
6
10
14
20
TA = –50°C
TA = 25°C
TA = 100°C
TEMPERATURE (
°C)
–50
–50
0
50
100
150
200
–25
025
50
1771 G09
75
100
VIN = 10V
MAXIMUM
MINIMUM
BURST THRESHOLD
Reference Voltage
vs Temperature
TEMPERATURE (
°C)
–50
1.21
1.22
1.23
1.24
1.25
–25
0
25
50
1771 G10
75
100
VIN = 10V
Load Step Transient Response
VOUT
100mV/DIV
INDUCTOR
CURRENT
1A/DIV
VIN = 10V
50
µs/DIV
1771 G11
VOUT = 3.3V
ILOAD = 100mA TO 2A
FIGURE 1 CIRCUIT
Burst Mode Operation
VOUT
50mV/DIV
INDUCTOR
CURRENT
0.5A/DIV
VIN = 10V
10
µs/DIV
1771 G12
VOUT = 3.3V
ILOAD = 100mA
FIGURE 1 CIRCUIT



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