Datasheet

LTC3883/LTC3883-1
10
3883fa
For more information www.linear.com/LTC3883
TYPICAL PERFORMANCE CHARACTERISTICS
Soft-Off Ramp
Current Sense Threshold
vs I
TH
Voltage (Low Range)
Maximum Current Sense Threshold
vs Duty Cycle, V
OUT
= 0V
Maximum Current Sense Threshold
vs Common Mode Voltage
Regulated Output
vs Temperature
SHARE_CLK Frequency
vs Temperature
SHARE-CLK Frequency vs V
IN
Quiescent Current vs Temperature V
OUT
Measurement Error vs V
OUT
RUN
2V/DIV
V
OUT
1V/DIV
5ms/DIVt
FALL
= 5ms
t
DELAY
= 10ms
3883 G10
DUTY CYCLE (%)
0
MAXIMUM CURRENT SENSE THRESHOLD (mV)
51
53
55
90
3883 G12
49
47
50
52
54
48
46
45
30
50
70
50mV SENSE CONDITION
TEMPERATURE (°C)
–50
0.4975
V
OUT
(V)
0.4980
0.4990
0.4995
0.5000
0.5025
0.5010
0
50
75
3883 G14
0.4985
0.5015
0.5020
0.5005
–25 25
100
125
150
TEMPERATURE (°C)
–50
90
SHARE_CLK FREQUENCY (kHz)
95
100
105
110
–25 0 25 50
3883 G15
75 100 125 150
V
IN
(V)
6
SHARE_CLOCK FREQUENCY (kHz)
100.0
100.5
22
3883 G16
99.5
99.0
10
14
16
2826
101.0
18
8
12
24
20
TEMPERATURE (°C)
–50
10
QUIESCENT CURRENT (mA)
15
20
25
–25 0 25 50
3883 G17
75 100 125 150
V
OUT
(V)
0.5
MEASSURED ERROR (mV)
0.40
0.30
0.20
0.10
0
–0.10
–0.20
–0.30
–0.40
4.5
3883 G18
1.5 2.5 3.5 5.541 2 3 5
V
ITH
(V)
0
CURRENT LIMIT (A) WITH 1mΩ SENSE RESISTOR
10
20
30
1.5
2.5
3883 G11
0
–10
–20
0.5 1 2
40
50
60
V
SENSE
50mV
V
SENSE
25mV
COMMON MODE VOLTAGE (V)
0
50.0
MAXIMUM CURRENT SENSE THRESHOLD (mV)
50.5
1
2
3 4
3883 G13
5
51.5
51.0
50mV SENSE CONDITION