Datasheet

LT8616
6
8616fa
For more information www.linear.com/LT8616
TYPICAL PERFORMANCE CHARACTERISTICS
Power-Good Thresholds Soft-Start Tracking Switching Frequency
Switching Period vs R
T
Minimum On-Time Minimum Off-Time
FB Voltage vs Temperature Line Regulation vs V
IN1
Load Regulation
TEMPERATURE (°C)
–50
774
VOLTAGE (mV)
802
800
798
796
794
792
790
788
786
784
782
780
778
776
806
804
75 100 125 150–25 0 25
8616 G10
50
V
IN1
(V)
0
–0.1
VOLTAGE (%)
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
0.1
0.08
25 30 35 405 10
8616 G11
15 20
V
IN1
= V
IN2
LOAD (A)
0
–0.2
CHANGE IN V
OUT
(%)
0.1
0.05
0
–0.05
–0.1
–0.15
0.2
0.15
1.75 2.0 2.25 2.50.25 1.00.750.5
8616 G12
1.25 1.5
FB2
FB1
TEMPERATURE (°C)
–50
–15
PG THRESHOLD RELATIVE TO FB (%)
5
0
–5
–10
15
10
75 100 125 150–25 0
8616 G13
25 50
PG HIGH FALLING
PG LOW RISING
PG HIGH RISING
PG LOW FALLING
SS/TR VOLTAGE (mV)
0
0
FB VOLTAGE (mV)
700
300
400
500
600
200
100
900
800
700 800 900 1000100 200 300
8616 G14
400 500 600
TEMPERATURE (°C)
–50
1.85
FREQUENCY (MHz)
2.15
2.1
2.05
2
1.95
1.9
2.25
2.2
75 100 125 150–25 0
8616 G15
25 50
R
T
= 14.7kΩ
SWITCHING PERIOD (µs)
0
0
R
T
RESISTOR (kΩ)
200
180
160
140
120
100
80
60
40
20
240
220
2 3 4 5
8616 G16
1
TEMPERATURE (°C)
–50
20
TIME (ns)
45
40
35
30
25
50
75 100 125 150
8616 G17
–25 0 25 50
TEMPERATURE (°C)
–50
50
TIME (ns)
85
80
75
70
65
60
55
90
75 100 125 150
8616 G18
–25 0 25 50
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