LTC3826 Linear Technology, LTC3826 Datasheet - Page 6

• Manufacturer Part Number: LTC3826
• Description: 2-Phase Synchronous Step-Down Controller
• Manufacturer: Linear Technology

www.datasheet4u.com
LTC3826
TYPICAL PERFORMANCE CHARACTERISTICS
6
350
300
250
200
150
100
–40
120
100
100
–20
80
40
50
40
20
60
20
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
TH
0.2
10
PULSE SKIPPING
FORCED CONTINUOUS
Burst Mode OPERATION
(RISING)
Burst Mode OPERATION
(FALLING)
Voltage
0.2
FEEDBACK VOLTAGE (V)
0.4
I
INPUT VOLTAGE (V)
TH
0.3
15
PIN VOLTAGE (V)
300μA LOAD
0.6
NO LOAD
0.4 0.5
20
0.8
10% DUTY CYCLE
0.6 0.7 0.8
25
1.0
30
1.2
3826 G10
3826 G16
3826 G13
0.9
35
1.4
–240
–270
–120
–150
–180
–210
–300
–30
–60
–90
6.0
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
60
30
44
42
40
38
36
34
32
30
28
26
24
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
–5
COMMON MODE VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
3
EXTV
0
EXTV
4
15
15
INTV
CC
CC
5
FALLING
RISING
CC
30
35
6
45
55
7
60
8
75
CC
75
3826 G14
3826 G17
3826 G11
9
90
95
10
120
100
5.1
5.5
5.4
5.3
5.2
5.0
80
60
40
20
0
3
2
0
4
1
0
0
0
INTV
Maximum Current Sense
Threshold vs Duty Cycle
SENSE Pins Total Input
Bias Current vs I
V
SENSE
10
0.2
5
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
3826 G12
3826 G15
3826 G18
3826fc
100
1.4
40