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LTC3549 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC3549
Description  250mA Low VIN Buck Regulator in 2mm 횞 3mm DFN
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3549 Datasheet(HTML) 6 Page - Linear Technology

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LTC3549
6
3549f
1
µs/DIV
VOUT
20mV/DIV
AC COUPLED
VSWITCH
2V/DIV
IL
100mA/DIV
3549 G19
VIN = 2.5V
VOUT = 1.2V
ILOAD = 2OmA
Load Step 0mA to 250mA
Pulse Skip
Load Step 25mA to 250mA
Pulse Skip
Burst Mode Operation
ILOAD = 20mA
Load Step 0mA to 250mA
Burst Mode Operation
Load Step 25mA to 250mA
Burst Mode Operation
TYPICAL PERFOR A CE CHARACTERISTICS
(From Typical Application on the front page, except for the resistive divider resistor values)
200
µs/DIV
VOUT
500mV/DIV
VRUN 1V/DIV
IL
50mA/DIV
3549 G16
VIN = 3.6V
VOUT = 1.2V
1k
Ω Load
20
µs/DIV
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
3549 G17
VIN = 2.2V
VOUT = 1.2V
20
µs/DIV
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
3549 G18
VIN = 2.2V
VOUT = 1.2V
20
µs/DIV
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
3549 G20
VIN = 2.2V
VOUT = 1.2V
20
µs/DIV
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
3549 G21
VIN = 2.2V
VOUT = 1.2V
Start-Up from Shutdown
Burst Mode Operation


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