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LTC1625IGN Datenblatt(PDF) 4 Page - Linear Technology

Teilenummer LTC1625IGN
Bauteilbeschribung  No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
PDF  24 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1625IGN Datenblatt(HTML) 4 Page - Linear Technology

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LTC1625
TYPICAL PERFOR A CE CHARACTERISTICS
INPUT VOLTAGE (V)
0
70
75
80
85
90
100
5
10
15
20
1625 G02
25
30
95
ILOAD = 2A
ILOAD = 200mA
FIGURE 1 CIRCUIT
Efficiency vs Input Voltage,
VOUT = 3.3V
VIN – VOUT Dropout Voltage
vs Load Current
LOAD CURRENT (A)
0
200
300
4
1625 G06
100
0
1
2
3
5
400
FIGURE 1 CIRCUIT
VOUT = 5V – 5% DROP
Efficiency vs Load Current
LOAD CURRENT (A)
0.001
70
80
10
1625 G01
60
50
0.01
0.1
1
100
90
BURST
MODE
OPERATION
CONTINUOUS
MODE
VIN = 10V
VOUT = 5V
EXTVCC = VOUT
Load Regulation
LOAD CURRENT (A)
0
– 0.10
– 0.05
0
4
1625 G04
– 0.15
– 0.20
– 0.25
1
2
3
5
FIGURE 1 CIRCUIT
Input and Shutdown Current
vs Input Voltage
INPUT VOLTAGE (V)
05
0
400
1000
10
20
25
1625 G07
200
800
600
0
20
50
10
40
30
15
30
35
EXTVCC OPEN
EXTVCC = 5V
SHUTDOWN
Efficiency vs Input Voltage,
VOUT = 5V
INPUT VOLTAGE (V)
0
70
75
80
85
90
100
5
10
15
20
1625 G02
25
30
95
ILOAD = 2A
ILOAD = 200mA
FIGURE 1 CIRCUIT
ITH Pin Voltage vs Load Current
LOAD CURRENT (A)
0
2.0
2.5
3.0
35
1625 G05
1.5
1.0
12
46
7
0.5
0
FIGURE 1 CIRCUIT
VIN = 20V
VOUT = 5V
CONTINUOUS
MODE
Burst Mode
OPERATION
INTVCC LOAD CURRENT (mA)
0
300
400
500
40
1625 G09
200
100
0
10
20
30
50
EXTVCC Switch Drop
vs INTVCC Load Current
INTVCC Load Regulation
INTVCC LOAD CURRENT (mA)
0
–1.0
– 0.5
0
40
1625 G08
–1.5
– 2.0
– 2.5
10
20
30
50



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