Datasheet

LT8616
5
8616fa
For more information www.linear.com/LT8616
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency at 3.3V
OUT
Efficiency at 3.3V
OUT
No Load Supply Current
No Load Supply Current
BIAS Current
vs Switching Frequency EN/UV Threshold
Efficiency at 5V
OUT
Efficiency at 5V
OUT
Efficiency vs Frequency
LOAD (A)
0
80
EFFICIENCY (%)
98
96
94
92
90
88
86
84
82
100
0.25 1.5 1.75 2.0 2.25 2.50.5 0.75 1.0
8616 G01
1.25
CH2, 24V
IN
CH2, 12V
IN
CH1, 24V
IN
CH1, 12V
IN
f
SW
= 700kHz
LOAD (mA)
0.01
30
EFFICIENCY (%)
95
90
85
80
75
70
65
60
55
50
45
40
35
100
0.1 100 10001
8616 G02
10
f
SW
= 700kHz
CH2, 24V
IN
CH2, 12V
IN
CH1, 24V
IN
CH1, 12V
IN
FREQUENCY (MHz)
0.2
85
EFFICIENCY (%)
95
94
93
92
91
90
89
88
87
86
1.4 2.6 3.01.8
8616 G03
2.21.00.6
V
IN1
= V
IN2
= 12V
CH2, 3.3V, 1.5A
CH1, 5V, 1A
LOAD (A)
0
80
EFFICIENCY (%)
100
98
96
94
92
90
88
86
84
82
0.75 1.0 1.25 2.0 2.25 2.51.5
8616 G04
1.750.50.25
CH2, 24V
IN
CH2, 12V
IN
CH1, 24V
IN
CH1, 12V
IN
f
SW
= 700kHz
LOAD (mA)
0.01
30
EFFICIENCY (%)
100
90
95
85
80
75
70
65
60
55
50
45
40
35
0.1 1 10 1000
8616 G05
100
CH2, 24V
IN
CH2, 12V
IN
CH1, 24V
IN
CH1, 12V
IN
f
SW
= 700kHz
V
IN
(V)
0
0
INPUT CURRENT (µA)
10
9
8
7
6
5
4
3
2
1
5 10 15 20 25 30 40
8616 G06
35
V
OUT1
= 3.3V
V
OUT2
= 5V
TEMPERATURE (°C)
–50
0
SUPPLY CURRENT (µA)
30
25
20
15
10
5
–25 0 25 50 75 100 150
8616 G07
125
V
IN1
= V
IN2
= 12V
V
OUT1
= 5V
V
OUT2
= 3.3V
IN REGULATION
FREQUENCY (MHz)
0
0
BIAS CURRENT (mA)
18
16
14
12
10
8
6
4
2
0.5 1.0 1.5 2.0 3.0
8616 G08
2.5
V
IN1
= V
IN2
= 12V
V
OUT1
= 5V
LOAD1 = 1A
V
OUT2
= 3.3V
LOAD2 = 1A
TEMPERATURE (°C)
–50
0.92
EN THRESHOLD (V)
1.1
1.08
1.06
1.04
0.98
0.96
0.94
1.02
1.0
–25 50250 75 100 150
8616 G09
125
EN FALLING
EN RISING
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