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LTC3835 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC3835
Description  Low IQ Synchronous Step-Down Controller
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3835 Datasheet(HTML) 6 Page - Linear Technology

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LTC3835
6
3835fc
TYPICAL PERFORMANCE CHARACTERISTICS
Total Input Supply Current
vs Input Voltage
EXTVCC Switchover and INTVCC
Voltages vs Temperature
INTVCC Line Regulation
Maximum Current Sense Voltage
vs ITH Voltage
Sense Pins Total Input
Bias Current
Maximum Current Sense
Threshold vs Duty Cycle
Foldback Current Limit
Quiescent Current
vs Temperature
SENSE Pins Total Input
Bias Current vs ITH
INPUT VOLTAGE (V)
5
350
300
250
200
150
100
50
0
20
30
3835 G10
10
15
25
35
300μA LOAD
NO LOAD
TEMPERATURE (°C)
–45
4.0
4.2
4.6
4.8
5.0
6.0
5.4
–5
35
55
3835 G11
4.4
5.6
5.8
5.2
–25
15
75
95
EXTVCC FALLING
EXTVCC RISING
INTVCC
INPUT VOLTAGE (V)
0
5.00
5.05
5.15
5.20
5.25
5.50
5.35
10
20
25
3835 G12
5.10
5.40
5.45
5.30
515
30
35
40
ITH PIN VOLTAGE (V)
0
40
60
100
0.6
1.0
3835 G13
20
0
0.2
0.4
0.8
1.2
1.4
–20
–40
80
PULSE SKIPPING
FORCED CONTINUOUS
BURST MODE (RISING)
BURST MODE (FALLING)
10% Duty Cycle
VSENSE COMMON MODE VOLTAGE (V)
0
–700
–600
–400
–300
–200
6789
200
3835 G14
–500
12345
10
–100
0
100
DUTY CYCLE (%)
0
40
80
120
20
60
100
20
40
60
80
3835 G15
100
10
030
50
70
90
FEEDBACK VOLTAGE (V)
0
0
20
60
80
100
0.2
0.4 0.5
0.9
3835 G16
40
0.1
0.3
0.6 0.7 0.8
120
TRACK/SS = 1V
TEMPERATURE (°C)
–45
80
85
90
75
3835 G17
75
70
60
–15
15
45
–30
90
0
30
60
65
100
95
PLLIN/MODE = 0V
ITH VOLTAGE (V)
0
2
4
6
8
12
3835 G18
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
10
VSENSE = 3.3V
TA = 25ºC, unless otherwise noted.



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