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LTC3124 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC3124
Description  15V, 5A 2-Phase Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3124 Datasheet(HTML) 6 Page - Linear Technology

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LTC3124
6
3124f
For more information www.linear.com/LTC3124
TYPICAL PERFORMANCE CHARACTERISTICS
Burst Mode Operation
Burst Mode Operation to
PWM Mode
PWM Mode to Burst Mode
Operation
Burst Mode Transient
Synchronized Operation
Efficiency vs Frequency
Frequency Accuracy
CAP Pin Voltage vs VOUT
VCC vs VIN
VIN, FALLING (V)
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
0
1
3124 G19
–1
–2
5.5
2
VOUT = 15V
VOUT = 3.6V
VOUT = 2.5V
VOUT (V)
0
0
–3
–4
–5
–2
–1
–6
–7
10
6
4
2
3124 G21
8
14
12
VIN (V)
0
4.5
4.0
3.5
3.0
2.5
4
2
1
3124 G22
3
6
5
VIN FALLING
VIN RISING
VOUT
100mV/DIV
AC-COUPLED
VSWA
10V/DIV
PHASE A
INDUCTOR
CURRENT
500mA/DIV
5µs/DIV
OUTPUT CURRENT = 50mA
3124 G23
VOUT
50mV/DIV
AC-COUPLED
VPWM/SYNC
2V/DIV
50µs/DIV
OUTPUT CURRENT = 100mA
TYPE III COMPENSATION—SEE FIGURE 10 FOR
COMPONENT VALUES
3124 G25
VOUT
100mV/DIV
AC-COUPLED
OUTPUT
CURRENT
100mA/DIV
200µs/DIV
3124 G26
100mA
10mA
10mA
VSWB
10V/DIV
VSWA
10V/DIV
VPWM/SYNC
5V/DIV
1µs/DIV
OUTPUT CURRENT = 1A
3124 G27
SYNCHRONIZATION SIGNAL SET TO 2.6MHz
SYNCHRONIZED TO 1.3MHz
OUTPUT CURRENT (mA)
10
40
50
60
70
80
100
1000
3124 G20
30
20
10
0
90
100
100kHz EFFICIENCY
1MHz EFFICIENCY
3MHz EFFICIENCY
VOUT
50mV/DIV
AC-COUPLED
VPWM/SYNC
2V/DIV
50µs/DIV
OUTPUT CURRENT = 100mA
TYPE III COMPENSATION—SEE FIGURE 10 FOR
COMPONENT VALUES
3124 G24
Configured as front page application at TA = 25°C, unless otherwise specified.



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