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LTC3370 Datasheet(PDF) 12 Page - Linear Technology

Part # LTC3370
Description  60V Low IQ Buck Controller Plus 4-Channel 8A Configurable Buck DC/DCs
PDF  44 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3370 Datasheet(HTML) 12 Page - Linear Technology

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LTC3372
12
Rev. A
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
4A Buck Output Voltage
vs Output Current
2A Buck Regulated Feedback
Voltage vs VINA-H
1A Buck PMOS Current Limit
vs Temperature
Oscillator Frequency vs RT
RT Programmed Oscillator
Frequency vs Temperature
Default Oscillator Frequency
vs Temperature
VTEMP vs Temperature
Enable Threshold vs Temperature
(LV Buck Regulator) TA = 25°C, unless otherwise noted.
1A Buck NMOS and PMOS RDS(ON)
vs Temperature Across VIN
VOUT = 1.8V
VIN = 2.25V
VIN = 3.3V
VIN = 5V
OUTPUT CURRENT (A)
0.001
0.01
0.1
1
4
1.700
1.720
1.740
1.760
1.780
1.800
1.820
3372 G34
FORCED CONTINUOUS MODE
VIN = 3.3V
VOUT = 1.8V
VFB1
VFB2
ILOAD = 10mA
ILOAD = 1A
INPUT VOLTAGE (V)
2
2.5
3
3.5
4
4.5
5
5.5
792
794
796
798
800
802
804
806
808
3372 G35
VIN = 3.3V
VIN = 5V
TEMPERATURE (°C)
–75 –50 –25 0
25 50 75 100 125 150
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
3372 G36
NMOS
PMOS
VIN = 5V
VIN = 3.3V
VIN = 2.25V
TEMPERATURE (°C)
–75 –50 –25 0
25 50 75 100 125 150
100
150
200
250
300
350
400
450
500
3372 G37
VIN = 3.3V
RT (kΩ)
250 300 350 400 450 500 550 600 650 700 750 800
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
3372 G38
RT = 402kΩ
VINA–H = 3.3V
TEMPERATURE (°C)
–75 –50 –25 0
25 50 75 100 125 150
1.90
1.92
1.94
1.96
1.98
2.00
2.02
2.04
2.06
2.08
2.10
3372 G39
VINA–H = 3.3V
TEMPERATURE (°C)
–75 –50 –25 0
25 50 75 100 125 150
1.90
1.92
1.94
1.96
1.98
2.00
2.02
2.04
2.06
2.08
2.10
3372 G40
TEMPERATURE (°C)
0
25
50
75
100
125
150
–200
0
200
400
600
800
1000
1200
1400
3372 G41
RISING
FALLING
VIN = 3.3V
TEMPERATURE (°C)
–75 –50 –25 0
25 50 75 100 125 150
200
300
400
500
600
700
800
900
3372 G42



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