LT3682 LINER [Linear Technology], LT3682 Datasheet - Page 5

• Manufacturer Part Number: LT3682
• Description: 1A Micropower Step-Down
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
1200
1000
800
600
400
200
0.9
0.7
0.5
1.9
1.7
1.5
1.3
1.1
25
20
15
10
35
30
5
0
0
0
0
0
Switch Current Limit
Boost Pin Current
Frequency Foldback
R
100 200 300 400
RT
= 29.4k
0.25
20
OR CLOCKED
SYNC > 0.8V
SWITCH CURRENT (A)
FB PIN VOLTAGE (mV)
DUTY CYCLE (%)
0.5
40
500
0.75
60
600 700 800
SYNC < 0.3V
80
1
3682 G10
3682 G13
3682 G16
1.25
100
900
810
800
790
780
770
120
100
1.9
1.7
1.5
1.3
1.1
0.9
0.7
0.5
80
60
40
20
0
50
50
50
Switch Current Limit
(SYNC Pin Grounded)
Feedback Voltage
Minimum Switch On-Time
25
25
25
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE(°C)
25
DC = 10%
DC = 90%
25
25
50
50
50
75
75
75
100
100
100
T
3682 G11
3682 G14
3682 G17
A
= 25°C, unless otherwise noted.
125
125
125
1.20
1.15
1.10
1.05
0.95
0.90
0.85
0.80
700
500
400
300
200
100
600
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
0
0
1
2
1
0
0
50
Switch Voltage Drop
Switching Frequency
Soft-Start
R
RT
0.5
= 29.4k
25
0.25
RUN/SS PIN VOLTAGE (V)
SWITCH CURRENT (A)
0
1
TEMPERATURE(°C)
0.5
1.5
25
50
0.75
2
LT3682
2.5
75
1
100
3
3682 G12
3682 G15
3682 G18
5
3682f
1.25
125
3.5