Datasheet

LT8611
7
8611fa
For more information www.linear.com/LT8611
TYPICAL PERFORMANCE CHARACTERISTICS
RT Programmed Switching
Frequency
V
IN
UVLO Bias Pin Current
Bias Pin Current Switching Waveforms Switching Waveforms
Switching Waveforms
Transient Response Transient Response
SWITCHING FREQUENCY (MHz)
0.2
RT PIN RESISTOR (kΩ)
150
200
250
1.8
8611 G28
100
50
125
175
225
75
25
0
0.6
1
1.4
2.2
TEMPERATURE (°C)
–55
INPUT VOLTAGE (V)
3.4
35
8611 G29
2.8
2.4
–25 5 65
2.2
2.0
3.6
3.2
3.0
2.6
95 125
155
INPUT VOLTAGE (V)
5
BIAS PIN CURRENT (mA)
4.00
4.50
45
8611 G30
3.50
3.00
15
25
35
10
20
30
40
5.00
3.75
4.25
3.25
4.75
V
BIAS
= 5V
V
OUT
= 5V
I
LOAD
= 1A
f
SW
= 700kHz
SWITCHING FREQUENCY (MHz)
0
0
BIAS PIN CURRENT (mA)
2
4
6
8
10
12
0.5 1 1.5 2
8611 G31
2.5
V
BIAS
= 5V
V
OUT
= 5V
V
IN
= 12V
I
LOAD
= 1A
I
L
1A/DIV
V
SW
5V/DIV
500ns/DIV
12V
IN
TO 5V
OUT
AT 1A
8611 G32
I
L
200mA/DIV
V
SW
5V/DIV
500µs/DIV
12V
IN
TO 5V
OUT
AT 10mA
V
SYNC
= 0V
8611 G33
I
L
1A/DIV
V
SW
10V/DIV
500ns/DIV
36V
IN
TO 5V
OUT
AT 1A
8611 G34
I
LOAD
1A/DIV
V
OUT
100mV/DIV
50µs/DIV
0.5A TO 1.5A TRANSIENT
12V
IN
, 5V
OUT
C
OUT
= 47µF
8611 G35
I
LOAD
1A/DIV
V
OUT
200mV/DIV
50µs/DIV
0.5A TO 2.5A TRANSIENT
12V
IN
, 5V
OUT
C
OUT
= 47µF
8611 G36
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.