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LT3686IDDPBF bảng dữ liệu(PDF) 3 Page - Linear Technology

tên linh kiện LT3686IDDPBF
Giải thích chi tiết về linh kiện  37V/1.2A Step-Down Regulator in 3mm 횞 3mm DFN
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LT3686IDDPBF bảng dữ liệu(HTML) 3 Page - Linear Technology

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LT3686

3686fa
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Quiescent Current at Shutdown
VEN/UVLO < 0.4V
VEN/UVLO = 1V
0.1
10
1
15
µA
µA
Quiescent Current
Not Switching, MODE ≤ 0.4V
Not Switching, MODE ≥ 0.8V
1.1
1.2
1.3
1.4
mA
mA
Internal Undervoltage Lockout
3.4
3.6
V
Overvoltage Lockout
l
37
38
39
V
Feedback Voltage
l
0.790
0.785
0.8
0.8
0.810
0.815
V
V
Reference Voltage Line Regulation
VIN = 3.6V ↔ 37V
0.0012
%/V
FB Pin Bias Current
20
100
nA
Switching Frequency
IDA < 1.2A
RT = 15.4kΩ
RT = 100kΩ
RT = 267kΩ
0.3
1.9
2.1
670
300
2.5
2.3
MHz
MHz
kHz
kHz
Minimum On Time
100
110
ns
Minimum Off Time
150
200
ns
Switch VCESAT
ISW = 1.2A
680
mV
Switch Current Limit
(Note 3)
l
1.9
1.85
2.3
2.3
2.6
2.65
A
A
Switch Active Current
SW = 10V (Note 4)
SW = 0V (Note 5)
400
20
600
30
µA
µA
BOOST Pin Current
ISW = 1.2A
20
mA
Minimum Boost Voltage Above Switch
ISW = 1.2A
2.2
2.4
V
Max BD Pin Active Load Current
30
40
mA
BD Pin Active Load Disable Threshold
l
5.2
6.5
V
DA Pin Current to Stop OSC
l
1.2
1.7
A
MODE High
l
0.8
V
MODE Low
l
0.4
V
MODE Pin Bias Current
0.1
µA
SS Threshold
0.9
V
SS Source Current
VSS = 1V
1.3
2
2.7
µA
EN/UVLO Bias Current
VEN/UVLO = 10V
VEN/UVLO = 0V
40
1
µA
µA
EN/UVLO Threshold
l
1.22
1.27
1.32
V
EN/UVLO Hysteresis
1.8
2.4
3
µA
Boost Diode Forward Drop
IBD to IBOOST = 200mA
0.85
V
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VEN/UVLO ≥ 1.32V.
electricAl chArActeristics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3686E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3686I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycle.
Note 4: Current flows into pin.
Note 5: Current flows out of pin.
Note 6: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when overtemperature protection is active. Continuous operation above
the specified maximum operating junction temperature may impair device
reliability.



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