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LTC3541 Datasheet(PDF) 5 Page - Linear Technology

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

LTC3541 Datasheet(HTML) 5 Page - Linear Technology

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LTC3541

3541fa
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
vs Temperature
Oscillator Frequency
vs Supply Voltage
Buck Reference vs Temperature
RDS(ON) vs Temperature
Buck (Pulse Skip) Load Step from
1mA to 500mA
Buck (Burst) and VLDO Output
TEMPERATURE (
°C)
–50
2.00
2.05
2.15
2.20
2.25
2.50
2.35
0
50
75
3541 G10
2.10
2.40
2.45
2.30
–25
25
100 125
VIN = 3.6V
SUPPLY VOLTAGE (V)
3
2.2
2.3
3541 G11
2.1
2.0
4
5
6
2.5
VIN = 3.6V
2.4
TEMPERATURE (
°C)
–50
0.390
0.392
0.396
0.398
0.400
0.410
0.404
0
50
75
5341 G12
0.394
0.406
0.408
0.402
–25
25
100 125
VIN = 3.6V
VLDO/Linear Regulator Reference
vs Temperature
TEMPERATURE (
°C)
–50
0.780
0.784
0.792
0.796
0.800
0.820
0.808
0
50
75
5341 G13
0.788
0.812
0.816
0.804
–25
25
100 125
VIN = 3.6V
TEMPERATURE (
°C)
–50
0.400
0.500
0.700
25
75
3541 G14
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
10mV/DIV
AC COUPLED
LVOUT
10mV/DIV
AC COUPLED
VIN = 3.6V
LVOUT = 1.5V
VOUT = 1.8V
ILOAD = 50mA
Burst Mode OPERATION
2
µs/DIV
3541 G15
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 1mA TO 500mA
40
µs/DIV
3541 G16
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 1mA TO 500mA
40
µs/DIV
3541 G17
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
VIN = 3.6V
LVOUT = 1.5V
ILOAD = 1mA TO 300mA
400
µs/DIV
3541 G18
Buck (Burst) Load Step from
1mA to 500mA
VLDO Load Step from
1mA to 500mA



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