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LTC7124 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC7124
Description  17V, Dual 3.5A Synchronous Step-Down Regulator with Ultralow Quiescent Current
PDF  22 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC7124 Datasheet(HTML) 5 Page - Linear Technology

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LTC7124
5
7124fa
For more information www.linear.com/LTC7124
TA = 25°C, VIN = 12V, L = 2.2µH, f = 1MHz unless
otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage
vs Temperature
RDS(ON) vs Temperature
RDS(ON) vs Input Supply Voltage
Switch Leakage Current
Start–Up With Load
in Burst Mode Operation
Start–Up into Pre–Biased Output
in Burst Mode Operation
Peak Current Limit
vs Temperature
Load Step
with Internal Compensation
Load Step
with External Compensation
TEMPERATURE (°C)
–50 –25
0
25
50
75
100 125
4.6
4.7
4.8
5.0
5.1
5.2
7124 G10
VIN = 12V
VOUT = 2.5V
ILOAD = 100mA to 3.5A
L = 1.8µH
ITH = INTV
COUT = 100µF
CC
40µs/DIV
VOUT
AC–COUPLED
200mV/DIV
IL
2A/DIV
ILOAD
5A/DIV
7124 G11
VIN = 12V
VOUT = 2.5V
ILOAD = 150mA to 3.5A
L = 1.2µH
CITH = 150pF, RITH = 30kΩ
10µs/DIV
VOUT
AC–COUPLED
200mV/DIV
IL
2A/DIV
ILOAD
5A/DIV
7124 G14
COUT = 100µF
TEMPERATURE (°C)
–50 –25
0
25
50
75
100 125
598.0
598.5
599.0
599.5
600.0
600.5
601.0
601.5
7124 G13
TOP SWITCH
BOTTOM SWITCH
TEMPERATURE (°C)
–50 –25
0
25
50
75
100 125
0
25
50
75
100
125
150
7124 G14
TOP SWITCH
BOTTOM SWITCH
INPUT VOLTAGE (V)
0 1 2 3 4 5 6 7 8 9 1011121314151617
0
20
40
60
80
100
7124 G15
TOP SWITCH
BOTTOM SWITCH
TEMPERATURE (°C)
–50 –25
0
25
50
75
100 125
0
2
4
6
8
10
12
14
16
7124 G16
R
VOUT = 5V
LOAD = 5Ω
500µs/DIV
RUN
2V/DIV
PGOOD
2V/DIV
VOUT
2V/DIV
IL
1A/DIV
7124 G17
500µs/DIV
RUN
2V/DIV
VOUT
2V/DIV
PGOOD
2V/DIV
IL
1A/DIV
7124 G18
VOUT = 5V



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