Datasheet

LT3686A
4
3686afa
3.3V
OUT
Efficiency (2MHz)
5V
OUT
Efficiency
V
FB
vs TemperatureOvervoltage Lockout (OVLO)
3.3V
OUT
Maximum Load Current
T
A
= 25°C unless otherwise noted.
Switch Voltage Drop
Internal Undervoltage Lockout
(UVLO)
5V
OUT
Maximum Load Current
LOAD CURRENT (mA)
0
0
EFFICIENCY (%)
10
30
40
50
70
400
800
1000
3686A G01
20
80
90
60
200
600
1200
MODE/SYNC < 0.4V
MODE/SYNC > 0.8V
V
IN
= 12V
V
OUT
= 3.3V
L = 6.8µH
f = 2MHz
LOAD CURRENT (mA)
0
0
EFFICIENCY (%)
10
30
40
50
70
400
800
1000
3686A G02
20
80
90
60
200
600
1200
MODE/SYNC < 0.4V
MODE/SYNC > 0.8V
V
IN
= 12V
V
OUT
= 5V
L = 10µH
f = 2MHz
V
IN
(V)
0
0
I
OUT
(A)
0.2
0.6
0.8
1.0
1.2
1.6
3686A G03
0.4
1.8
2.0
1.4
20 3010
40
V
OUT
= 3.3V
L = 6.8µH
f = 2MHz
MINIMUM
TYPICAL
V
IN
(V)
0
I
OUT
(A)
0.2
0.6
0.8
1.0
1.2
1.6
3686A G04
0.4
1.8
2.0
1.4
20 3010
40
TYPICAL
MINIMUM
V
OUT
= 5V
L = 10µH
f = 2MHz
I
SW
(mA)
0
0
V
SW
(mV)
100
300
400
500
600
800
3686A G05
200
900
700
1000 1500500
2000 2500
150°C
125°C
25°C
–50°C
TEMPERATURE (°C)
–50 0
2.0
V
IN
(V)
2.5
3.5
4.0
3686A G06
3.0
100 15050
TEMPERATURE (°C)
–50 0
35
V
IN
(V)
36
38
40
39
3686A G07
37
100 15050
TEMPERATURE (°C)
–50 0
780
V
FB
(mV)
790
810
820
3686A G08
800
100 15050
typicAl perForMAnce chArActeristics