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LTC3637 Datasheet(PDF) 4 Page - Linear Technology

No. de pieza LTC3637
Descripción Electrónicos  76V, 1A Step-Down Regulator
PDF  26 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LTC3637 Datasheet(HTML) 4 Page - Linear Technology

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LTC3637
4
3637fa
For more information www.linear.com/LTC3637
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Input Voltage
Line Regulation vs Input Voltage
Load Regulation vs Load Current
Efficiency and Power Loss
vs Load Current, VOUT = 5V
Efficiency and Power Loss
vs Load Current, VOUT = 3.3V
Efficiency and Power Loss
vs Load Current, VOUT = 1.8V
ELECTRICAL CHARACTERISTICS
Note that the maximum ambient temperature consistent with these
specifications is determined by specific operating conditions in
conjunction with board layout, the rated package thermal impedance and
other environmental factors.
Note 4: This IC includes over temperature protection that is intended to
protect the device during momentary overload conditions. The maximum
rated junction temperature will be exceeded when this protection is active.
Continuous operation above the specified absolute maximum operating
junction temperature may impair device reliability or permanently damage
the device. The overtemperature protection level is not production tested.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6: For application concerned with pin creepage and clearance
distances at high voltages, the MSOP package should be used. See
Applications Information.
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3637 G01
0
10
1000
100
0
1.0
VIN = 12V
VIN = 24V
VIN = 70V
EFFICIENCY
POWER LOSS
VOUT = 5V, FIGURE 13 CIRCUIT
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3637 G02
0
10
1000
100
0
1.0
VIN = 12V
VIN = 24V
VIN = 68V
EFFICIENCY
POWER LOSS
VOUT = 3.3V
FIGURE 13 CIRCUIT
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3637 G03
0
10
1000
100
0
1.0
VIN = 12V
VIN = 24V
VIN = 67V
EFFICIENCY
POWER LOSS
VOUT = 1.8V
FIGURE 13 CIRCUIT
INPUT VOLTAGE (V)
0
80
90
100
30
50
80
3637 G04
70
60
50
10
20
40
60
70
ILOAD = 1A
ILOAD = 100mA
ILOAD = 10mA
ILOAD = 1mA
VOUT = 5V
FIGURE 13 CIRCUIT
INPUT VOLTAGE (V)
5
–0.05
–0.04
–0.02
–0.01
0
0.05
0.02
25
45
55
65
3637 G05
–0.03
0.03
0.04
0.01
15
35
75
VOUT = 5V
ILOAD = 1A
FIGURE 13 CIRCUIT
LOAD CURRENT (mA)
0 100 200 300 400 500 600 700 800 900
5.00
5.01
3637 G06
4.99
4.98
1000
5.02
VIN = 12V
VOUT = 5V
FIGURE 13 CIRCUIT



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