LT3682 LINER [Linear Technology], LT3682 Datasheet - Page 6

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

LT3682
TYPICAL PERFORMANCE CHARACTERISTICS
6
2.5
4.5
3.5
10
25
20
15
10
12
40
35
30
8
6
4
2
0
5
4
3
2
5
0
1
0
RUN/SS Pin Current
Minimum Input Voltage
Maximum V
0.1 0.2 0.3 0.4 0.5
5
T
A
T
= 25˚C
A
= 85˚C
10
RUN/SS PIN VOLTAGE (V)
LOAD CURRENT (mA)
LOAD CURRENT(A)
10
15
IN
for Full Frequency
20
0.6
25
100
0.7
V
L = 10μH
f = 800kHz
30
V
L = 10μH
f = 800kHz
SYNC = 5V
OUT
OUT
0.8
= 3.3V
35
= 5V
0.9
3682 G19
3682 G22
3682 G25
1000
40
1
6.5
5.5
4.5
1.4
1.2
0.8
0.6
0.4
0.2
40
35
30
25
20
15
10
5
4
5
6
0
1
1
0
Boost Diode Forward Voltage
0
Minimum Input Voltage
Maximum V
T
0.1 0.2 0.3 0.4 0.5
A
= 25˚C
0.25
BOOST DIODE CURRENT (A)
LOAD CURRENT (mA)
LOAD CURRENT(A)
10
IN
T
A
for Full Frequency
= 85˚C
0.5
0.6
100
0.7
0.75
V
L = 10μH
f = 800kHz
V
L = 4.7μH
f = 2MHz
SYNC =5V
OUT
0.8
OUT
T
= 5V
= 5V
0.9
3682 G23
3682 G26
A
3682 G20
= 25°C, unless otherwise noted.
1000
1
1
0.5
2.5
1.5
30
20
10
10
20
30
40
50
60
30
25
20
15
10
60
50
40
40
35
0
5
1
0
2
200
50
0
Error Amplifi er Output Current
Maximum V
V
C
0.1 0.2 0.3 0.4 0.5
Voltages
T
25
A
= 25˚C
FB PIN ERROR VOLTAGE (mV)
100
T
SWITCHING THRESHOLD
CURRENT LIMIT CLAMP
A
0
= 85˚C
LOAD CURRENT(A)
TEMPERATURE(°C)
IN
25
for Full Frequency
0
50
0.6
0.7
75
V
L = 10μH
f = 800kHz
SYNC = 3.3V
100
OUT
0.8
100
= 3.3V
0.9
3682 G21
3682 G24
3682 G27
3682f
125
200
1