lt3686a Linear Technology Corporation, lt3686a Datasheet - Page 4

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

LT3686A
TYPICAL PERFORMANCE CHARACTERISTICS
4
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
90
80
70
60
50
40
30
20
10
0
0
3.3V
0
5V
OUT
OUT
200
MODE/SYNC < 0.4V
Maximum Load Current
10
Effi ciency (2MHz)
LOAD CURRENT (mA)
MODE/SYNC > 0.8V
400
MINIMUM
40
39
38
37
36
35
V
–50
600
IN
20
Overvoltage Lockout (OVLO)
(V)
TYPICAL
800
V
V
L = 6.8μH
f = 2MHz
V
L = 10μH
f = 2MHz
30
0
IN
OUT
OUT
1000
TEMPERATURE (°C)
= 12V
= 3.3V
= 5V
3686A G01
3686A G04
1200
50
40
100
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
0
0
5V
0
Switch Voltage Drop
0
3686A G07
OUT
150
200
500
MODE/SYNC < 0.4V
Effi ciency
LOAD CURRENT (mA)
400
1000
MODE/SYNC > 0.8V
I
SW
600
(mA)
1500
820
810
800
790
780
800
–50
V
V
V
L = 10μH
f = 2MHz
FB
IN
OUT
2000
1000
= 12V
vs Temperature
= 5V
150°C
125°C
25°C
–50°C
3686A G05
3686A G02
T
A
0
1200
2500
= 25°C unless otherwise noted.
TEMPERATURE (°C)
50
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
4.0
3.5
3.0
2.5
2.0
0
–50
3.3V
0
Internal Undervoltage Lockout
(UVLO)
100
OUT
10
0
3686A G08
Maximum Load Current
150
TEMPERATURE (°C)
TYPICAL
V
IN
20
50
(V)
MINIMUM
V
L = 6.8μH
f = 2MHz
30
100
OUT
= 3.3V
3686A G03
3686A G06
3686af
150
40