lt3686a Linear Technology Corporation, lt3686a Datasheet - Page 6

• Manufacturer Part Number: lt3686a
• Description: 37v/1.2a Step-down Regulator In 3mm
• Manufacturer: Linear Technology Corporation

LT3686A
TYPICAL PERFORMANCE CHARACTERISTICS
6
200mA/DIV
2V/DIV
7
6
5
4
3
2
1
0
V
3.3V
Voltage
Start-Up Shutdown Waveform
I
1
SW
V
L = 22μH
f = 1MHz
I
MODE/SYNC = 1V
LOAD
LOAD
I
OUT
L
Light Load Discontinuous Mode
Waveform
V
V
L = 6.8μH
f = 2MHz
C
I
MODE/SYNC = 0V
LOAD
= 5V
MODE/SYNC < 0.4
OUT
IN
OUT
OUT
1V/DIV
= 5mA
= 5mA
= 10V
V
= 3.3V
= 22μF
MODE/SYNC > 0.8
= 25mA
IN
Typical Minimum Input
V
1V/DIV
10
OUT
200ms/DIV
I
LOAD
200ns/DIV
(mA)
100
V
L = 15μH
f = 1MHz
OUT
= 3.3V
3686A G24
3686A G18
1000
3686A G21
200mA/DIV
8
7
6
5
4
3
2
1
0
5V
Voltage
2V/DIV
Start-Up Shutdown Waveform
I
1
V
L = 22μH
f = 1MHz
I
MODE/SYNC = 0V
LOAD
LOAD
OUT
V
OUT
SW
I
L
= 5V
1V/DIV
= 500mA
Fixed Frequency No Load
Waveform
= 500mA
V
V
L = 6.8μH
f = 2MHz
C
I
MODE/SYNC = 3.3V
Typical Minimum Input
LOAD
MODE/SYNC > 0.8
IN
OUT
OUT
V
IN
= 10V
V
1V/DIV
= 3.3V
= 22μF
= 0mA
10
OUT
200ms/DIV
I
LOAD
(mA)
200ns/DIV
100
V
L = 22μH
f = 1MHz
OUT
3686A G25
3686A G19
T
= 5V
A
1000
= 25°C unless otherwise noted.
3686A G22
200mA/DIV
2V/DIV
V
SW
I
L
Start-Up Shutdown Waveform
I
Start-Up Shutdown Waveform
I
V
L = 22μH
f = 1MHz
I
MODE/SYNC = 0V
V
L = 22μH
f = 1MHz
I
MODE/SYNC = 1V
LOAD
Continuous Mode Waveform
LOAD
LOAD
LOAD
V
V
L = 6.8μH
f = 2MHz
C
I
MODE/SYNC = 0V
OUT
OUT
LOAD
IN
OUT
OUT
= 10V
= 5V
= 5V
1V/DIV
1V/DIV
= 5mA
= 500mA
= 3.3V
= 22μF
= 200mA
= 5mA
= 500mA
V
V
IN
IN
V
1V/DIV
V
1V/DIV
OUT
OUT
200ms/DIV
200ms/DIV
200ns/DIV
3686A G23
3686A G26
3686A G20
3686af