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LTC3370 Datasheet(PDF) 5 Page - Analog Devices

Part # LTC3370
Description  Dual 5V, 2A Synchronous Step-Down DC/DCs in 2mm 횞 2mm LQFN
PDF  22 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC3370 Datasheet(HTML) 5 Page - Analog Devices

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LTC3315B
5
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, VIN = 3.3V, unless otherwise noted.
VIN Shutdown Quiescent Current
vs Temperature
VIN Quiescent Current vs
Temperature, All Modes, Not
Sleeping
VIN Quiescent Current vs
Temperature, Burst Mode,
Sleeping
Minimum On Time vs VIN
Minimum On Time vs
Temperature
UVLO Threshold vs Temperature
EN Threshold vs Temperature
Current Limit vs Temperature
Efficiency vs ILOAD Syncing,
Forced Continuous
VIN = 5.5V
VIN = 3.3V
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
3315B G07
BOTH BUCKS ENABLED
ONE BUCK ENABLED
VIN = 5.5V
VIN = 3.3V
VIN = 2.25V
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
Sleeping
Temperature, All Modes, Not
VIN Quiescent Current vs
3315B G08
ONE BUCK ENABLED
BOTH BUCKS ENABLED
VIN = 5.5V
VIN = 3.3V
VIN = 2.25V
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
3315B G09
150°C
25°C
–50°C
VIN (V)
2
2.5
3
3.5
4
4.5
5
5.5
0
10
20
30
40
50
60
70
3315B G10
VIN = 2.25V
VIN = 3.3V
VIN = 5.5V
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
0
10
20
30
40
50
60
70
3315B G11
UVLO RISING
UVLO FALLING
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
1.8
1.9
2.0
2.1
2.2
2.3
2.4
3315B G12
EN RISING
EN FALLING
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
320
330
340
350
360
370
380
390
400
410
420
3315B G13
PMOS
NMOS
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3315B G14
VIN = 3.3V
VOUT = 1.8V
3MHz 640nH DCR = 31mΩ
6MHz 330nH DCR = 21mΩ
10MHz 240nH DCR = 16mΩ
LOAD CURRENT (A)
1m
10m
100m
1 2
0
10
20
30
40
50
60
70
80
90
100
Forced Continuous
Efficiency vs ILOAD Syncing
3315B G15



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