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參數(shù)資料
| 型號： | ADP125ARHZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 可調(diào)正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 5.5V INPUT, 500 MA, LOW QUIESCENT CURRENT, CMOS LINEAR REGULATOR W/EXTERNAL VOLTAGE DIVIDER No of Pins: 8 Temperature Range: Ind |
| 中文描述： | 0.8 V-5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.23 V DROPOUT, PDSO8 |
| 封裝： | ROHS COMPLIANT, MO-187AAT, MSOP-8 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大小： | 648K |
| 代理商： | ADP125ARHZ |
ADP124/ADP125
Rev. A | Page 5 of 20
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Rating
VIN to GND
0.3 V to +6.5 V
ADJ to GND
0.3 V to +4 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 +85°C
Operating Junction Temperature Range
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 ADP124/ADP125 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 limited.
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 JESD 51-7 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
θJA
ΨJB
Unit
8-Lead MSOP
102.8
31.8
°C/W
8-Lead LFCSP
68.9
44.1
°C/W
ESD CAUTION
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