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LT1674 датащи(PDF) 4 Page - Linear Technology

номер детали LT1674
подробное описание детали  Auto-Polarity, Ultralow Voltage Step-Up Converter
PDF  24 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LT1674 датащи(HTML) 4 Page - Linear Technology

  LT1674 Datasheet HTML 1Page - Linear Technology LT1674 Datasheet HTML 2Page - Linear Technology LT1674 Datasheet HTML 3Page - Linear Technology LT1674 Datasheet HTML 4Page - Linear Technology LT1674 Datasheet HTML 5Page - Linear Technology LT1674 Datasheet HTML 6Page - Linear Technology LT1674 Datasheet HTML 7Page - Linear Technology LT1674 Datasheet HTML 8Page - Linear Technology LT1674 Datasheet HTML 9Page - Linear Technology Next Button
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LTC3109
4
3109fa
TYPICAL PERFORMANCE CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
board layout, the rated thermal package thermal resistance and other
environmental factors. The junction temperature (TJ) is calculated from
the ambient temperature (TA) and power dissipation (PD) according to
the formula: TJ = TA + (PD • θJA°C/W), where θJA is the package thermal
impedance.
Note 3: Specification is guaranteed by design and not 100% tested in
production.
Note 4: Current measurements are made when the output is not switching.
Note 5: Failure to solder the exposed backside of the QFN package to the
PC board ground plane will result in a thermal resistance much higher
than 37°C/W.
Note 6: The Absolute Maximum Rating is a DC rating. Under certain
conditions in the applications shown, the peak AC voltage on the C2A and
C2B pins may exceed ±8V. This behavior is normal and acceptable because
the current into the pin is limited by the impedance of the coupling
capacitor.
Input Resistance vs VIN
Efficiency vs VIN
Open-Circuit Start-Up Voltage
vs Source Resistance
IIN vs VIN
IVOUT vs VIN
VIN (mV)
10
1
10
100
1000
100
1000
3109 G01
1:100 RATIO, C1 = 1nF
1:50 RATIO, C1 = 4.7nF
1:20 RATIO, C1 = 10nF
VOUT = 0V
VIN (mV)
10
10
100
1000
10000
100
1000
3109 G02
1:100 RATIO, C1 = 1nF
1:50 RATIO, C1 = 4.7nF
1:20 RATIO, C1 = 10nF
VOUT = 3.3V
NO LOAD ON VLDO
VIN (mV)
10
2.0
3.0
4.0
5.0
6.0
100
1000
3109 G03
7.0
2.5
3.5
4.5
5.5
6.5
1:100 RATIO, C1 = 1nF
1:50 RATIO, C1 = 4.7nF
1:20 RATIO, C1 = 10nF
VOUT = 0V
SOURCE RESISTANCE (Ω)
0
0
10
30
40
50
6789
90
3109 G05
20
12345
10
60
70
80
VIN (mV)
10
0
10
20
30
40
100
1000
3109 G04
50
5
15
25
35
45
1:100 RATIO, C1 = 1nF
1:50 RATIO, C1 = 4.7nF
1:20 RATIO, C1 = 10nF
VOUT = 0V
TA = 25°C, unless otherwise noted.
VIN (mV)
10
0.1
1
10
100
100
1000
3109 G18
1:50 RATIO
C1 = 4.7nF
VOUT = 5V
VOUT = 3.3V
PVOUT vs VIN



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