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参数资料
| 型号： | ADP170-1.8-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL ADP170 1.8V |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 输出电压： | 1.8V |
| 电流 - 输出： | 300mA |
| 输入电压： | 1.6 ~ 3.6V |
| 稳压器类型： | 正，固定式 |
| 工作温度： | -40°C ~ 85°C |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP170 |
Data Sheet
ABSOLUTE MAXIMUM RATINGS
ADP170/ADP171
Table 3.
Parameter
VIN to GND
VOUT to GND
EN to GND
Storage Temperature Range
Operating Junction Temperature Range
Operating Ambient Temperature Range
Soldering Conditions
Rating
?0.3 V to +3.6 V
?0.3 V to VIN
?0.3 V to +3.6 V
?65°C to +150°C
?40°C to +125°C
?40°C to +85°C
JEDEC J-STD-020
maximum power dissipation exists, close attention to thermal
board design is required. The value of θ JA may vary, depending
on PCB material, layout, and environmental conditions. The
specified values of θ JA are based on a 4-layer, 4 in. × 3 in. PCB.
Refer to JESD 51-7 for detailed information regarding board
construction.
Ψ JB is the junction-to-board thermal characterization parameter
with units of °C/W. The Ψ JB of the package is based on modeling
and calculation using a 4-layer board. The Guidelines for Reporting
and Using Electronic Package Thermal Information: JESD51-12
Stresses above those listed under absolute maximum ratings
may cause permanent damage to the device. This is a stress
rating only and 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 only individually, not in
combination. The ADP170 / ADP171 can be damaged when the
junction temperature limits are exceeded. Monitoring ambient
temperature does not guarantee that T J is within the specified
temperature limits. In applications with high power dissipation
and poor thermal resistance, the maximum ambient temperature
may have to be derated.
states that thermal characterization parameters are not the same
as thermal resistances. Ψ JB measures the component power flowing
through multiple thermal paths rather than a single path as in
thermal resistance, θ JB . Therefore, Ψ JB thermal paths include
convection from the top of the package as well as radiation from
the package—factors that make Ψ JB more useful in real-world
applications. Maximum junction temperature (T J ) is calculated
from the board temperature (T B ) and power dissipation (P D )
using the formula
T J = T B + ( P D × Ψ JB )
Refer to JESD51-8 and JESD51-12 for more detailed information
about Ψ JB .
THERMAL RESISTANCE
θ JA and Ψ JB are specified for the worst-case conditions, that is, a
device soldered in a circuit board for surface-mount packages.
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 (T J ) of
the device is dependent on the ambient temperature (T A ), the
power dissipation of the device (P D ), and the junction-to-
ambient thermal resistance of the package (θ JA ).
Table 4. Thermal Resistance
Package Type θ JA
5-Lead TSOT 170
ESD CAUTION
Ψ JB
43
Unit
°C/W
Maximum junction temperature (T J ) is calculated from the
ambient temperature (T A ) and power dissipation (P D ) using the
following formula:
T J = T A + ( P D × θ JA )
Junction-to-ambient thermal resistance (θ JA ) 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 where high
Rev. C | Page 5 of 20
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