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LTC3121 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3121
Description  15V, 1.5A Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3121 Datasheet(HTML) 4 Page - Linear Technology

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LTC3121
4
3121fa
For more information www.linear.com/LTC3121
Typical perForMance characTerisTics
PWM Mode Operation
Load Transient Response
Inrush Current Control
Feedback vs Temperature
RDS(ON) vs Temperature,
Both NMOS and PMOS
Oscillator Frequency
vs Temperature
Efficiency vs Load Current,
VOUT = 5V
Efficiency vs Load Current,
VOUT = 7.5V
Efficiency vs Load Current,
VOUT = 12V
Configured as front page application unless otherwise specified.
1µs/DIV
3121 G04
VOUT
20mV/DIV
AC-COUPLED
INDUCTOR
CURRENT
1A/DIV
ILOAD = 200mA
500µs/DIV
3121 G05
VOUT
500mV/DIV
AC-COUPLED
OUTPUT
CURRENT
250mA/DIV
40mA
40mA
400mA
TEMPERATURE (°C)
–50
80
60
40
20
0
–20
–40
70
110
–10
3121 G08
30
150
TEMPERATURE (°C)
–60
1.0
0.5
–0.5
–1.0
0
–1.5
–2.0
90
–10
3121 G09
40
140
TEMPERATURE (°C)
–60
0.2
0.1
–0.2
–0.1
0
–0.3
–0.4
–0.5
–0.6
40
90
–10
3121 G07
140
LOAD CURRENT (mA)
0.01
100
90
70
50
40
80
60
30
20
10
0
10
0.1
3121 G01
1
100
1000
BURST
PWM
VIN = 4.2V
VIN = 3.3V
VIN = 0.6V
LOAD CURRENT (mA)
0.01
100
90
70
50
40
80
60
30
20
10
0
10
0.1
3121 G03
1000
1
100
PWM
VIN = 5.4V
VIN = 4.2V
VIN = 2.6V
BURST
LOAD CURRENT (mA)
0.01
100
90
70
50
40
80
60
30
20
10
0
10
0.1
3121 G02
1
100
1000
PWM
VIN = 5.4V
VIN = 3.8V
VIN = 2.3V
BURST
2ms/DIV
3121 G06
VOUT
5V/DIV
SD
5V/DIV
INDUCTOR
CURRENT
1A/DIV



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