lt3686a Linear Technology Corporation, lt3686a Datasheet - Page 5

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

TYPICAL PERFORMANCE CHARACTERISTICS
900
800
700
600
500
400
300
200
100
300
250
200
150
100
3.0
2.5
2.0
1.5
1.0
0.5
50
0
0
0
0
0
Current Limit vs Duty Cycle
0
Switching Frequency vs R
Soft-Start/Track vs V
200
0.5
25
400
FREQUENCY (MHz)
DUTY CYCLE (%)
1
SS (mV)
SWITCH PEAK
600
50
1.5
FB
DA VALLEY
800
75
T
1000
2
3686A G12
3686A G09
3686A G15
1200
2.5
100
2.20
2.15
2.10
2.05
2.00
1.95
1.90
25
20
15
10
45
40
35
30
25
20
15
10
5
0
5
0
–50
3.3V
Frequency (2MHz)
0
EN/UVLO Pin Current
0
Switching Frequency vs
Temperature
R
T
= 15.4k
OUT
10
MODE/SYNC > 0.8
0
Maximum V
MODE/SYNC < 0.4
LOAD CURRENT (mA)
TEMPERATURE (°C)
500
20
EN/UVLO (V)
50
30
IN
1000
for Full
40
V
L = 6.8μH
f = 2MHz
100
OUT
= 3.3V
3686A G10
3686A G13
3686A G16
T
50
A
1500
= 25°C unless otherwise noted.
150
1200
1000
800
600
400
200
3.0
2.5
2.0
1.5
1.0
35
30
25
20
15
10
0
5
0
–50
0
0
Soft-Start/Track vs Frequency
(1MHz)
5V
Frequency (2MHz)
Switch Current Limit vs
Temperature
OUT
500
MODE/SYNC > 0.8
MODE/SYNC < 0.4
Maximum V
0
LOAD CURRENT (mA)
TEMPERATURE (°C)
1000
500
SS (mV)
50
LT3686A
IN
1500
for Full
100
V
L = 10μH
f = 2MHz
1000
2000
OUT
3686A G14
3686A G11
3686A G17
= 5V
3686af
5
2500
150