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LTC3100 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC3100
Description  1.5MHz Synchronous Dual Channel DC/DC Converter and 100mA LDO
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3100 Datasheet(HTML) 3 Page - Linear Technology

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LTC3100
3
3100fa
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
N-Channel MOSFET Switch-On
Resistance
VBST = 3.3V
0.3
Ω
P-Channel MOSFET Switch-On
Resistance
VBST = 3.3V
0.4
Ω
N-Channel MOSFET Current Limit
l
700
850
mA
Maximum Duty Cycle
VFBBST = 1.15V
l
87
90
%
Minimum Duty Cycle
VFBBST = 1.3V
l
0%
Switching Frequency
l
1.2
1.5
1.8
MHz
RUNBST Input High Voltage
l
0.9
V
RUNBST Input Low Voltage
l
0.3
V
RUNBST Input Current
RUNBST = 1.2V
0.8
2
μA
Soft-Start Time
0.8
ms
PGBST Threshold, Falling
Referenced to Feedback Voltage
–8
%
PGBST Hysteresis
Referenced to Feedback Voltage
3
%
PGBST Voltage Low
5mA Load
65
mV
PGBST Leakage Current
PGBST = 5.5V
0.01
10
μA
ELECTRICAL CHARACTERISTICS: STEP-DOWN CONVERTER
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
l
1.8
5.5
V
Output Voltage Adjust Range
l
0.61
5.5
V
Feedback Voltage
l
590
600
610
mV
Feedback Input Current
FBBK = 600mV
1
30
nA
Quiescent Current: Shutdown
Measured on VINBK, RUNBK = 0V, VINBST = 0V, VBST = 0V
Not Including Switch Leakage
0.01
1
μA
Quiescent Current: Active
Measured on VINBK (Note 4), RUNBST = 0V
240
350
μA
Quiescent Current: Burst Mode Operation
Measured on VINBK, FBBK = 620mV, MODE = OPEN,
RUNBST = 0V
16
30
μA
N-Channel MOSFET Switch Leakage Current
VINBK = SWBK = 5V
0.1
5
μA
P-Channel MOSFET Switch Leakage Current
SWBK = 0V, VINBK = 5V
0.1
5
μA
N-Channel MOSFET Switch-On Resistance
VINBK = 3.3V
0.45
Ω
P-Channel MOSFET Switch-On Resistance
VINBK = 3.3V
0.55
Ω
P-Channel MOSFET Current Limit
l
340
450
mA
Maximum Duty Cycle
FBBK < 590mV
l
100
%
Minimum Duty Cycle
FBBK > 610mV
l
0%
Switching Frequency
l
1.2
1.5
1.8
MHz
The
l denotes the
specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VINBK = 3.3V,
TA = 25°C, unless otherwise noted.
ELECTRICAL CHARACTERISTICS: STEP-UP CONVERTER The l denotes the specifications
which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VINBST = 1.2V, VBST = 3.3V,
TA = 25°C, unless otherwise noted.



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