ltc3834-1 Linear Technology Corporation, ltc3834-1 Datasheet - Page 5

• Manufacturer Part Number: ltc3834-1
• Description: 30?a Iq Synchronous Step-down Controller
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
350
300
200
150
100
100
–40
250
–20
6O
40
80
20
50
0
0
0
5
Total Input Supply Current vs
Input Voltage
Maximum Current Sense Voltage
vs I
TH
0.2
FIGURE 10 CIRCUIT
NO LOAD
10
FORCED CONTINUOUS
Burst Mode OPERATION
Burst Mode OPERATION
PULSE SKIPPING
(RISING)
(FALLING)
Voltage Cycle
0.4
I
INPUT VOLTAGE (V)
TH
120
15
100
80
60
40
20
300μA LOAD
0
PIN VOLTAGE (V)
0.6
0
Foldback Current Limit
20
0.1 0.2
0.8
10% DUTY CYCLE
25
FEEDBACK VOLTAGE (V)
1.0
0.3
W
30
0.4
1.2
38341 G10
38341 G13
0.5
U
1.4
35
0.6
0.7 0.8
–120
–150
–180
–210
–240
–270
–300
–30
–60
–90
38341 G16
6.0
5.8
5.6
5.4
4.8
4.6
4.4
4.0
5.2
5.0
4.2
60
30
0
–45
INTV
SENSE Pins Total Input Bias
Current
0
0.9
1
V
–25
CC
SENSE
2
Voltages vs Temperature
–5
COMMON MODE VOLTAGE (V)
TEMPERATURE (°C)
3
INTV
4
15
CC
5
35
6
55
7
40
38
36
34
32
30
28
26
24
22
8
–45
Quiescent Current vs Temperature
75
T
38341 G14
38341 G11
A
9
–30
= 25ºC, unless otherwise noted.
95
10
–15
TEMPERATURE (°C)
0
15
120
100
5.5
5.4
5.3
5.2
5.1
5.0
80
60
40
20
0
INTV
0
Maximum Current Sense
Threshold vs Duty
0
30
10
45
5
CC
20
Line Regulation
60
10
30
INPUT VOLTAGE (V)
38341zz G17
LTC3834-1
DUTY CYCLE (%)
75
15
40
90
50
20
60
25
70 80 90
30
35
38341 G15
38341 G12
38341f
5
100
40