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LTC1433IGN 数据表(PDF) 4 Page - Linear Technology

部件名 LTC1433IGN
功能描述  450mA, Low Noise Current Mode Step-Down DC/DC Converters
PDF  20 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1433IGN 数据表(HTML) 4 Page - Linear Technology

  LTC1433IGN Datasheet HTML 1Page - Linear Technology LTC1433IGN Datasheet HTML 2Page - Linear Technology LTC1433IGN Datasheet HTML 3Page - Linear Technology LTC1433IGN Datasheet HTML 4Page - Linear Technology LTC1433IGN Datasheet HTML 5Page - Linear Technology LTC1433IGN Datasheet HTML 6Page - Linear Technology LTC1433IGN Datasheet HTML 7Page - Linear Technology LTC1433IGN Datasheet HTML 8Page - Linear Technology LTC1433IGN Datasheet HTML 9Page - Linear Technology Next Button
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4
LTC1433/LTC1434
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD CURRENT (A)
0.001
60
70
80
0.01
0.1
1
1433/34 G01
50
40
100
90
VIN = 5V
VIN = 12V
VIN = 3.6V
VOUT = 3.3V
L = 22
µH
CSOC = 47pF
Efficiency of Figure 1 for L = 22
µH
SUPPLY VOLTAGE (V)
3.2
3.0
3.2
3.4
4.8
1433/34 G03
2.8
2.6
2.9
3.1
3.3
2.7
2.5
2.4
3.6
4.0
4.4
3.4
5.0
3.8
4.2
4.6
5.2
VPROG = 0V
L = 20
µH
COSC = 50pF
IOUT
300mA
IOUT
400mA
IOUT
500mA
Dropout Characteristics at Different
Load Currents (VOUT = 3.3V)
SUPPLY VOLTAGE (V)
3
360
380
400
420
440
57
9
11
1433/34 G02
460
480
46
8
10
Supply Current vs Supply Voltage
Dropout Characteristics at Different
Load Currents (VOUT = 5V)
Maximum Output Current
vs Input Supply
SUPPLY VOLTAGE (V)
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.2
4.7
4.8
4.9
1433/34 G04
4.6
4.5
4.2
4.3
4.4
5.1
5.0
IOUT
200mA
IOUT
400mA
IOUT
300mA
VPROG = VIN
L = 20
µH
COSC = 50pF
SUPPLY VOLTAGE (V)
3
500
600
700
800
11
1433/34 G05
400
300
200
5
7
9
13
VOUT
3.3V
VOUT
5V
L = 22
µH
COSC = 50pF
Reference Voltage
vs Temperature
TEMPERATURE (
°C)
–45
1.186
1.194
115
1433/34 G06
1.178
1.170
–5
35
75
–25
15
55
95
1.202
1.182
1.190
1.174
1.198
SUPPLY VOLTAGE (V)
3
6
8
11
1433/34 G07
4
2
5
7
3
1
0
5
7
9
412
6
8
10
13
TA = 25°C
TA = 70°C
TA = 0°C
Switch Resistance of Small FET
Switch Leakage Current
vs Temperature
TEMPERATURE (
°C)
0
40
50
70
60
100
1433/34 G09
30
20
20
40
80
120
140
10
0
60
160
200
280
120
80
40
0
240
VIN = 13.5V
SSW PIN
BSW PIN
Switch Resistance of Big FET
SUPPLY VOLTAGE (V)
3
1.2
1.6
2.0
11
1433/34 G08
0.8
0.4
0
1.4
1.8
1.0
0.6
0.2
5
7
9
412
6
8
10
13
TA = 70°C
TA = 0°C
TA = 25°C



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