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ADP122ACPZ-1.8-R7 датащи(PDF) 5 Page - Analog Devices

номер детали ADP122ACPZ-1.8-R7
подробное описание детали  5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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ADP122ACPZ-1.8-R7 датащи(HTML) 5 Page - Analog Devices

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Data Sheet
ADP122/ADP123
Rev. E | Page 5 of 24
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Rating
VIN to GND
−0.3 V to +6.5 V
ADJ to GND
−0.3 V to +6.5 V
EN to GND
−0.3 V to +6.5 V
VOUT to GND
−0.3 V to VIN
Storage Temperature Range
−65°C to +150°C
Operating Ambient Temperature Range
−40°C to +125°C
Operating Junction Temperature
−40°C to +125°C
Soldering Conditions
JEDEC J-STD-020
Stresses above those listed under Absolute Maximum Ratings may
cause permanent damage to the device. This is a stress rating
only; functional operation of the device at these or any other
conditions above those indicated in the operational section of
this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
THERMAL DATA
Absolute maximum ratings apply individually only, not in
combination. The ADP122/ADP123 can be damaged when the
junction temperature limits are exceeded. Monitoring ambient
temperature does not guarantee that TJ will remain within the
specified temperature limits. In applications with high power
dissipation and poor thermal resistance, the maximum ambient
temperature may have to be derated.
In applications with moderate power dissipation and low PCB
thermal resistance, the maximum ambient temperature can
exceed the maximum limit as long as the junction temperature
is within specification limits. The junction temperature (TJ) of
the device is dependent on the ambient temperature (TA), the
power dissipation of the device (PD), and the junction-to-ambient
thermal resistance of the package (θJA).
Maximum junction temperature (TJ) is calculated from the
ambient temperature (TA) and power dissipation (PD) using the
formula
TJ = TA + (PD × θJA)
The junction-to-ambient thermal resistance (θJA) of the package
is based on modeling and calculation using a 4-layer board. The
junction-to-ambient thermal resistance is highly dependent on the
application and board layout. In applications in which high maxi-
mum power dissipation exists, close attention to thermal board
design is required. The value of θJA may vary, depending on PCB
material, layout, and environmental conditions. The specified
values of θJA are based on a 4-layer, 4 inch × 3 inch circuit board.
Refer to JESD51-7 for detailed information on the board
construction
ΨJB is the junction-to-board thermal characterization parameter
and is measured in °C/W. The ΨJB of the package is based on
modeling and calculation using a 4-layer board. The Guidelines for
Reporting and Using Package Thermal Information: JESD51-12
states that thermal characterization parameters are not the same
as thermal resistances. ΨJB measures the component power flowing
through multiple thermal paths rather than a single path as in
thermal resistance, θJB. Therefore, ΨJB thermal paths include
convection from the top of the package as well as radiation from
the package—factors that make ΨJB more useful in real-world
applications. Maximum junction temperature (TJ) is calculated
from the board temperature (TB) and power dissipation (PD)
using the formula
TJ = TB + (PD × ΨJB)
Refer to JESD51-8 and JESD51-12 for more detailed information
about ΨJB.
THERMAL RESISTANCE
θJA and ΨJB are specified for the worst-case conditions, that is, a
device soldered in a circuit board for surface-mount packages.
Table 4. Thermal Resistance
Package Type
θ
JA
Ψ
JB
Unit
5-Lead TSOT
170
43
°C/W
6-Lead 2 mm × 2 mm LFCSP
68.9
44.1
°C/W
ESD CAUTION


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