LT3690 LINER [Linear Technology], LT3690 Datasheet - Page 7

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

TYPICAL PERFORMANCE CHARACTERISTICS
10V/DIV
1A/DIV
250
225
200
175
150
125
100
V
75
50
25
SW
12
10
0
I
8
6
4
2
0
L
0.2
RT Programmed Switching
Frequency
Bias Pin Current
0
Switching Waveforms
36V
V
V
V
I
LOAD
BIAS
OUT
IN
IN
= 12V
TO 5V
= 5V
0.5
0.6
SWITCHING FREQUENCY (MHz)
SWITCHING FREQUENCY (kHz)
= 5V
= 1A
OUT
AT 1A
1
1
500ns/DIV
1.4
1.5
1.8
2
8610 G27
8610 G30
8610 G33
2.2
2.5
100mV/DIV
1A/DIV
5V/DIV
1A/DIV
I
V
V
LOAD
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
OUT
SW
I
–55
L
V
Switching Waveforms
12V
Transient Response
IN
0.5A TO 1.5A TRANSIENT
12V
C
OUT
–25
UVLO
IN
IN
= 47μF
TO 5V
, 5V
OUT
5
TEMPERATURE (°C)
OUT
AT 1A
35
500ns/DIV
50μs/DIV
65
95
125
8610 G28
8610 G31
8610 G34
155
200mV/DIV
200mA/DIV
1A/DIV
5.00
4.75
4.50
4.25
4.00
3.75
3.50
3.25
3.00
5V/DIV
I
V
LOAD
OUT
V
SW
5
Bias Pin Current
I
L
V
V
I
f
Transient Response
0.5A TO 2.5A TRANSIENT
12V
C
LOAD
SW
BIAS
OUT
Switching Waveforms
12V
V
OUT
10
SYNC
= 700kHz
IN
= 5V
IN
= 47μF
= 5V
= 1A
, 5V
TO 5V
= 0V
15
OUT
INPUT VOLTAGE (V)
OUT
20
AT 10mA
50μs/DIV
500μs/DIV
25
30
LT8610
35
40
8610 G29
8610 G35
7
8610p
8610 G32
45