LTC3835 Linear Technology, LTC3835 Datasheet - Page 6

• Manufacturer Part Number: LTC3835
• Description: Low IQ Synchronous Step-Down Controller
• Manufacturer: Linear Technology

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LTC3835
TYPICAL PERFORMANCE CHARACTERISTICS
6
100
–40
120
100
350
300
250
200
150
100
–20
80
60
40
40
20
20
50
80
60
0
0
0
5
0
0
Total Input Supply Current
vs Input Voltage
Maximum Current Sense Voltage
vs I
Foldback Current Limit
TRACK/SS = 1V
0.1
0.2
TH
10
PULSE SKIPPING
FORCED CONTINUOUS
BURST MODE (RISING)
BURST MODE (FALLING)
300μA LOAD
NO LOAD
Voltage
0.2
FEEDBACK VOLTAGE (V)
0.4
I
INPUT VOLTAGE (V)
TH
0.3
15
PIN VOLTAGE (V)
0.6
0.4 0.5
20
0.8
0.6 0.7 0.8
10% Duty Cycle
25
1.0
30
1.2
3835 G16
3835 G10
3835 G13
0.9
1.4
35
–100
–200
–300
–400
–500
–600
–700
200
100
100
6.0
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
95
90
85
80
75
70
65
60
0
–45
–45
0
EXTV
Voltages vs Temperature
Sense Pins Total Input
Bias Current
Quiescent Current
vs Temperature
PLLIN/MODE = 0V
–30
1
V
–25
SENSE
CC
–15
2
Switchover and INTV
COMMON MODE VOLTAGE (V)
–5
TEMPERATURE (°C)
TEMPERATURE (°C)
3
0
4
15
15
5
30
35
INTV
EXTV
EXTV
6
45
CC
CC
CC
55
7
RISING
FALLING
60
8
75
CC
75
T
3835 G14
3835 G17
3835 G11
9
A
= 25ºC, unless otherwise noted.
95
10
90
5.30
5.00
5.50
5.45
5.40
5.35
5.25
5.20
5.15
5.10
5.05
120
100
80
60
40
20
12
10
0
8
6
4
2
0
0
0
0
INTV
Maximum Current Sense
Threshold vs Duty Cycle
SENSE Pins Total Input
Bias Current vs I
V
SENSE
10
5
0.2
CC
20
= 3.3V
Line Regulation
10
0.4
30
INPUT VOLTAGE (V)
DUTY CYCLE (%)
I
TH
15
40
0.6
VOLTAGE (V)
20
50
TH
0.8
60
25
70
1.0
30
80
1.2
35
90
3835 G15
3835 G18
3835 G12
3835fc
100
1.4
40