LT3682 LINER [Linear Technology], LT3682 Datasheet - Page 4

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

LT3682
TYPICAL PERFORMANCE CHARACTERISTICS
4
1.25
0.75
0.25
30
20
10
120
100
90
80
70
60
50
40
0.5
1.5
80
60
40
20
0.1
0
1
Effi ciency (V
0
5
No Load Supply Current
Maximum Load Current
10
5
SYNC = 0V
SYNC = 5V
1
10
LOAD CURRENT (mA)
15
V
V
MINIMUM
IN
INPUT VOLTAGE (V)
IN
INPUT VOLTAGE(V)
OUT
= 24V
= 12V
15
20
10
= 5V, SYNC = 0V)
20
25
25
V
TYPICAL
IN
100
30
V
f = 800kHz
30
OUT
V
L = 10μH
f = 800kHz
= 34V
L = 10μH
OUT
= 3.3V
35
35
3682 G01
= 5V
3682 G04
3682 G07
1000
40
40
90
80
70
60
50
40
30
20
10
1000
0.1
0.75
0.25
1.25
900
800
700
600
500
400
300
200
100
Effi ciency (V
1.5
0.5
0
1
8
50
Maximum Load Current
No Load Supply Current
CATCH DIODE: DIODES, INC. B150
V
V
IN
OUT
25
= 12V
INCREASED SUPPLY CURRENT
DUE TO CATCH DIODE LEAKAGE
AT HIGH TEMPERATURE
10
1
= 3.3V
TYPICAL
LOAD CURRENT (mA)
SYNC = 0V
SYNC = 5V
V
V
OUT
0
IN
IN
INPUT VOLTAGE (V)
TEMPERATURE(°C)
12
= 12V
= 24V
10
= 3.3V, SYNC = 0V)
25
MINIMUM
14
50
100
f = 800kHz
16
V
L = 10μH
IN
75
V
L = 4.7μH
f = 2MHz
= 34V
OUT
3682 G02
18
100
= 5V
T
1000
3682 G05
3682 G08
A
= 25°C, unless otherwise noted.
125
20
100
90
80
70
60
50
40
30
20
10
0.1
Effi ciency (V
1.75
1.25
0.75
0.25
1.25
0.75
0.50
0.25
1.75
1.5
0.5
1.5
1
1
0
0
Maximum Load Current
Maximum Load Current
TYPICAL
1
TYPICAL
LOAD CURRENT (mA)
5
5
SYNC = 0V
SYNC = 3.3V
SYNC = 0V
SYNC = 3.3V
OUT
10
10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
10
= 3.3V, SYNC = 0V)
15
15
MINIMUM
MINIMUM
20
20
V
V
L = 10μH
f = 800kHz
100
IN
OUT
25
25
= 12V
= 3.3V
V
L = 10μH
f = 500kHz
V
L = 10μH
f = 800kHz
3682 G03
OUT
30
30
OUT
1000
= 1.8V
= 3.3V
35
35
1
0.1
0.01
0.001
3682 G06
3682 G09
3682f
40
40