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LT8331 Datasheet(HTML) 5 Page - Analog Devices

Part No. LT8331
Description  Low IQ Boost/SEPIC/Flyback/Inverting Converter with 0.5A, 140V Switch
Download  30 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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LT8331 Datasheet(HTML) 5 Page - Analog Devices

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LT8331
5
Rev. C
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Switching Waveforms
(in CCM)
Switching Waveforms
(in DCM/Light Burst Mode)
Switching Waveforms
(in Deep Burst Mode)
Burst Frequency vs Load Current
VIN Pin Current (Sleep Mode, Not
Switching) vs Temperature
VIN Pin Current (Active Mode, Not
Switching) vs Temperature
VIN Pin Current (Active Mode, Not
Switching) vs Temperature
VIN = 12V
VSYNC/MODE = 0V
VBIAS = 0V
JUNCTION TEMPERATURE (°C)
–50 –25 0
25 50 75 100 125 150 175
0
1.25
2.50
3.75
5.00
6.25
7.50
8.75
10.00
8331 G10
JUNCTION TEMPERATURE (°C)
–50 –25 0
25 50 75 100 125 150 175
600
650
700
750
800
850
900
950
1000
8331 G11
VIN = 12V
VSYNC/MODE = 0V
VBIAS = 0V
JUNCTION TEMPERATURE (°C)
–50 –25 0
25 50 75 100 125 150 175
0
5
10
15
20
25
30
8331 G12
VIN = 12V
VSYNC/MODE = 0V
VBIAS = 5V
VOUT Transient Response: Load
Current Transients from 82.5mA
to 165mA to 82.5mA
VOUT Transient Response: Load
Current Transients from 5mA to
165mA to 5mA
2µs/DIV
VSW
50V/DIV
IL1+IL2
200mA/DIV
8331 G13
FRONT PAGE APPLICATION
VIN = 48V, VOUT = 48V, ILOAD = 165mA
2µs/DIV
VSW
50V/DIV
IL1+IL2
200mA/DIV
8331 G14
FRONT PAGE APPLICATION
VIN = 48V, VOUT = 48V, ILOAD = 15mA
5µs/DIV
VSW
50V/DIV
IL1+IL2
200mA/DIV
8331 G15
FRONT PAGE APPLICATION
VIN = 48V, VOUT = 48V, ILOAD = 3mA
FRONT PAGE APPLICATION
VIN = 48V, VOUT = 48V
LOAD CURRENT (mA)
0
20
40
60
80
100
0
150
300
450
600
8331 G16
FRONT PAGE APPLICATION
VIN = 48V, VOUT = 48V
200µs/DIV
VOUT
500mV/DIV
ILOAD
100mA/DIV
8331 G17
FRONT PAGE APPLICATION
VIN = 48V, VOUT = 48V
500µs/DIV
VOUT
1V/DIV
ILOAD
100mA/DIV
8331 G18


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