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LTC3865 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC3865
Description  Dual, 2-Phase Synchronous DC/DC Controller with Pin Selectable Outputs
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3865 Datasheet(HTML) 7 Page - Linear Technology

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LTC3865/LTC3865-1

3865f
Typical perForMance characTerisTics
Current Sense Threshold
vs ITH Voltage
Maximum Current Sense
Threshold vs Common Mode
Voltage
Maximum Current Sense
Threshold vs Duty Cycle
TK/SS Pull-Up Current
vs Temperature
Tracking Up and Down with
External Ramp
(Forced Continuous Mode)
Quiescent Current vs Input
Voltage without EXTVCC
INTVCC Line Regulation
Maximum Current Sense
Voltage vs Feedback Voltage
(Current Foldback)
VITH (V)
0
–40
–20
0
20
40
60
80
0.5
1
1.5
2
3865 G10
ILIM = INTVCC
ILIM = GND
ILIM = FLOAT
VSENSE COMMON MODE VOLTAGE (V)
0
30
40
50
3
5
20
10
0
1
2
4
60
70
80
3865 G11
ILIM = INTVCC
ILIM = GND
ILIM = FLOAT
60
80
100
40
20
50
70
90
30
10
0
DUTY CYCLE (%)
0
60
100
20
40
80
3865 G12
ILIM = INTVCC
ILIM = GND
ILIM = FLOAT
TK/SS1
TK/SS2
2V/DIV
VOUT1 = 1.5V
1 LOAD
500mV/DIV
VOUT2 = 1.2V
1 LOAD
500mV/DIV
20ms/DIV
3865 G07
INPUT VOLTAGE (V)
0
4.25
4.50
4.75
40
3865 G09
4.00
3.50
3.75
3.00
10
20
30
5
15
25
35
3.25
5.25
5.00
FEEDBACK VOLTAGE (V)
0
0
20
40
60
0.1
0.2
0.3
0.4
3865 G13
0.5
80
100
10
30
50
70
90
0.6
ILIM = INTVCC
ILIM = FLOAT
ILIM = GND
TEMPERATURE (°C)
–50
1.75
25
3865 G14
1.00
0.50
–25
0
50
0.25
0
2.00
1.50
1.25
0.75
75
100 125
INPUT VOLTAGE (V)
5
10
0
2
5
15
25
30
3865 G08
1
4
3
20
35
40
VIN = 15V


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