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LTC3541-3 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3541-3
Description  High Efficiency Buck VLDO Regulator
Download  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3541-3 Datasheet(HTML) 5 Page - Linear Technology

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LTC3541-3

35413fc
TYPICAL PERFOR A CE CHARACTERISTICS
RDS(0N) vs Temperature
Buck (Pulse Skip) Load Step from
1mA to 500mA
TEMPERATURE (
°C)
–50
0.400
0.500
0.700
25
75
35413 G10
0.300
0.200
–25
0
50
100
125
0.100
0
0.600
VIN = 2.5V
VIN = 3.6V
VIN = 5.5V
SYNCH SWITCH
MAIN SWITCH
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
40
µs/DIV
35413 G11
VIN = 3.6V
VOUT = 1.8V
ILOAD = 1mA TO 500mA
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
40
µs/DIV
35413 G12
VIN = 3.6V
VOUT = 1.8V
ILOAD = 1mA TO 500mA
Buck (Burst) Load Step from 1mA
to 500mA
VLDO/Linear Regulator vs
Temperature
TEMPERATURE (
°C)
–50
0.390
0.392
0.396
0.398
0.400
0.410
0.404
0
50
75
35413 G19
0.394
0.406
0.408
0.402
–25
25
100 125
VIN = 3.6V
TEMPERATURE (
°C)
–50
0.780
0.784
0.792
0.796
0.800
0.820
0.808
0
50
75
35413 G20
0.788
0.812
0.816
0.804
–25
25
100 125
VIN = 3.6V
Buck Reference vs Temperature
Buck (Burst) and VLDO Output
LVOUT
10mV/DIV
AC COUPLED
VOUT
10mV/DIV
AC COUPLED
2
µs/DIV
35413 G21
VIN = 3.6V
LVOUT = 1.5V
VOUT = 1.875V
ILOAD = 50mA
Burst Mode OPERATION
VLDO Load Step from 1mA to
300mA
VLDO Load Step from 100mA to
300mA
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
400
µs/DIV
35413 G13
VIN = 3.6V
VOUT = 1.575V
ILOAD = 1mA TO 300mA
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
400
µs/DIV
35413 G14
VIN = 3.6V
VOUT = 1.575V
ILOAD = 100mA TO 300mA


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