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LT3757 Datasheet(PDF) 6 Page - Analog Devices

Part # LT3757
Description  2-Phase Dual Output Nonsynchronous Boost Controller with Hiccup Mode
PDF  38 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3757 Datasheet(HTML) 6 Page - Analog Devices

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LTC7840
6
Rev 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Output Efficiency
Dual Phase Single Output Load
Transient (0.2A to 0.8A)
(Circuit on Last Page)
Switch Node Voltage and Inductor
Current at Light Load (300mA)
Output Voltage Tracking Up and
Down with External Ramp
DRVCC Line Regulation
DRVCC Load Regulation
Quiescent Current vs Input
Voltage
Quiescent Current vs Temperature
IOUT (A)
0
94
76
74
72
92
88
84
80
90
86
82
78
70
1.0
0.6
7840 G01
1.2
0.8
0.4
0.2
VIN = 24V
VIN = 12V
VIN = 9V
VOUT = 240V
VIN = 12V
VOUT = 36V
20µs/DIV
LOAD CURRENT
500mA/DIV
INDUCTOR CURRENT
500mA/DIV
7840 G02
VIN = 12V
VOUT=48V
2µs/DIV
VSW
20V/DIV
IL
2A/DIV
7840 G03
VIN = 12V
RLOAD = 240Ω
50ms/DIV
7840 G04
SS1, SS2
1V/DIV
VOUT1 (36V)
10V/DIV
VOUT2 (24V)
10V/DIV
INPUT VOLTAGE (V)
5
16
27
38
49
60
0
2
4
6
8
10
12
7840 G05
DRVCC LOAD CURRENT
0 10 20 30 40 50 60 70 80 90 100
9.95
10.00
10.05
10.10
10.15
10.20
7840 G06
INPUT VOLTAGE (V)
5
16
27
38
49
60
0
1
2
3
4
5
7840 G07
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
0
1
2
3
7840 G08



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