LT3690 LINER [Linear Technology], LT3690 Datasheet - Page 6

• Manufacturer Part Number: LT3690
• Description: 42V, 2.5A Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

LT8610
TYPICAL PERFORMANCE CHARACTERISTICS
6
400
300
200
100
800
700
600
500
100
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
80
60
40
20
0
0
–50
0
Dropout Voltage
Minimum Load to Full Frequency
(SYNC DC High)
5
Soft-Start Current
V
V
f
SW
OUT
SS
–25
10
= 700kHz
= 0.5V
0.5
= 5V
15
5
TEMPERATURE (°C)
LOAD CURRENT (A)
INPUT VOLTAGE (V)
1
20
35
1.5
25
65
30
2
95
35
2.5
125
40
8610 G19
8610 G39
8610 G24
155
45
3
12.0
11.5
11.0
10.5
10.0
740
730
720
710
700
690
680
670
660
400
200
800
700
600
500
300
100
9.5
9.0
8.5
8.0
7.5
7.0
0
–55
–55
Switching Frequency
0
PG High Thresholds
Frequency Foldback
R
V
V
V
R
T
OUT
IN
SYNC
T
= 60.4k
–25
= 60.4k
–25
= 12V
= 3.3V
0.2
= 0V
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
FB VOLTAGE (V)
0.4
FB FALLING
FB RISING
35
35
65
65
0.6
95
95
0.8
125
125
8610 G25
8610 G20
8610 G22
155
155
1
–10.0
–10.5
–11.0
–11.5
–12.0
–7.0
–7.5
–8.0
–8.5
–9.0
–9.5
800
700
600
500
400
300
200
100
1.2
1.0
0.4
0.8
0.6
0.2
0
0
–55
0
0
PG Low Thresholds
Burst Frequency
Soft-Start Tracking
V
V
IN
OUT
0.2
= 12V
–25
= 3.3V
50
0.4
LOAD CURRENT (mA)
5
TEMPERATURE (°C)
TR/SS VOLTAGE (V)
FB FALLING
0.6
FB RISING
35
100
0.8
65
1.0
95
150
125
1.2
8610 G26
8610 G21
8610 G23
8610p
200
155
1.4