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ManualsBrandsLINEAR TECHNOLOGY ManualsPMICsPMIC - voltage regulators - DC DC switch controllers PolyPhase® TSSOP 38 EP
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LTC3856
7
3856f
INPUT VOLTAGE (V)
5
QUIESCENT CURRENT (mA)
3.3
4.3
4.5
15
25
35
2.9
3.9
3.1
4.1
2.7
2.5
3.7
3.5
10
20
40
30
3856 G08
INPUT VOLTAGE (V)
0
INTV
CC
VOLTAGE (V)
4.75
5.00
4.50
4.25
20
10
3015 35
5
25 40
3.50
3.25
3.00
4.00
5.25
3.75
3856 G09
V
SENSE
COMMON MODE VOLTAGE (V)
0
CURRENT SENSE THRESHOLD (mV)
60
70
50
40
2 4
1
3 5
10
0
30
80
20
3856 G11
I
LIM
= GND
I
LIM
= FLOAT
I
LIM
= INTV
CC
DUTY CYCLE (%)
0
MAXIMUM CURRENT SENSE VOLTAGE (mV)
40
90
100
20
40
60
20
70
30
80
10
0
60
50
10
30
80
100
50
70
90
3856 G12
I
LIM
= GND
I
LIM
= FLOAT
I
LIM
= INTV
CC
FEEDBACK VOLTAGE (V)
0 0.2
0.4
0.1
0.3
0.6
0.5
3856 G13
MAXIMUM CURRENT SENSE VOLTAGE (mV)
40
90
100
20
70
30
80
10
0
60
50
I
LIM
= GND
I
LIM
= FLOAT
I
LIM
= INTV
CC
TEMPERATURE (°C)
–50
TK/SS CURRENT (µA)
1.4
–25 250 50 75 100 125
1.1
1.0
1.3
1.5
1.2
3856 G14
V
ITH
(V)
0
–40
V
SENSE
(mV)
–20
0
20
40
60
80
0.5 1 1.5 2
3856 G10
I
LIM
= GND
I
LIM
= FLOAT
I
LIM
= INTV
CC
Typical perForMance characTerisTics
Current Sense Threshold
vs I
TH
Voltage
Maximum Current Sense Threshold
vs Common Mode Voltage
Maximum Current Sense Voltage
vs Duty Cycle
Maximum Current Sense Voltage
vs Feedback Voltage
(Current Foldback)
TK/SS Pull-Up Current
vs Temperature
Load Step with AVP
Quiescent Current vs Input
Voltage without EXTV
CC
INTV
CC
Line Regulation
Load Step without AVP
100µs/DIV
V
OUT
50mV/DIV
I
L
20A/DIV
3856 G07
V
IN
= 12V
V
OUT
= 1.5V
108mV
50A
25A