Datasheet

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