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INA253 데이터시트(Datasheet) 19 Page - Texas Instruments

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부품명 INA253
상세내용  High Voltage, Bidirectional, Zero-Drift, Current-Shunt Monitor with Integrated 2-mΩ Precision Low Inductive Shunt Resistor
PDF  24 Pages
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제조사  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
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 19 page
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INA253
IS-
IS-
IS-
SH-
IN-
DNC1
NC
VS
GND
REF2
IS+
IS+
IS+
SH+
IN+
DNC2
OUT
NC
NC
REF1
Bypass
Capacitor
Power
Supply
VIA
GnD
VIA
GnD
VIA
Signal VIAs
Signal VIAs
19
INA253
www.ti.com
SLOS954 – MAY 2018
Product Folder Links: INA253
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Copyright © 2018, Texas Instruments Incorporated
11 Layout
11.1 Layout Guidelines
The INA253 is specified for current handling of up to 10 A over the entire –40°C to 125°C temperature range
using a 1-oz. copper pour for the input power plane as well as no external airflow passing over the device.
The primary current-handling limitation for the INA253 is how much heat is dissipated inside the package.
Efforts to improve heat transfer out of the package and into the surrounding environment improve the ability of
the device to handle currents of up to 15 A over the entire –40°C to 125°C temperature range.
Heat transfer improvements primarily involve larger copper power traces and planes with increased copper
thickness (2 oz.) as well as providing airflow to pass over the device. The INA253 EVM features a 2-oz.
copper pour for the planes and is capable of supporting 15 A at temperatures up to 125°C.
Place the power-supply bypass capacitor as close as possible to the supply and ground pins. The
recommended value of this bypass capacitor is 0.1 µF. Additional decoupling capacitance can be added to
compensate for noisy or high-impedance power supplies.
11.2 Layout Example
Figure 17. INA253 Layout Example




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