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LM2940CSX-12 Arkusz danych(PDF) 3 Page - Texas Instruments

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Numer części LM2940CSX-12
Szczegółowy opis  LM2940-N/LM2940C 1A Low Dropout Regulator
Download  35 Pages
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

LM2940CSX-12 Arkusz danych(HTML) 3 Page - Texas Instruments

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LM2940-N, LM2940C
www.ti.com
SNVS769I – MARCH 2000 – REVISED APRIL 2013
Absolute Maximum Ratings
(1) (2)
LM2940-N KTT, NFE, NAC, NDE, DCY
≤ 100 ms
60V
LM2940C KTT, NDE
≤ 1 ms
45V
Internal Power Dissipation(3)
Internally Limited
Maximum Junction Temperature
150°C
Storage Temperature Range
−65°C ≤ TJ ≤ +150°C
TO-220 (NDE), Wave
260°C, 10s
DDPAK/ TO-263 (KTT)
235°C, 30s
Soldering Temperature (4)
SOT-223 (DCY)
260°C, 30s
WSON-8 (NGN)
235°C, 30s
ESD Susceptibility (5)
2 kV
(1)
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which
the device functions but the specifications might not be ensured. For ensured specifications and test conditions see the Electrical
Characteristics.
(2)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3)
The maximum allowable power dissipation is a function of the maximum junction temperature, TJ, the junction-to-ambient thermal
resistance,
θJA, and the ambient temperature, TA. Exceeding the maximum allowable power dissipation will cause excessive die
temperature, and the regulator will go into thermal shutdown. The value of
θJA (for devices in still air with no heatsink) is 60°C/W for the
TO-220 package, 80°C/W for the DDPAK/TO-263 package, and 174°C/W for the SOT-223 package. The effective value of
θJA can be
reduced by using a heatsink (see Application Hints for specific information on heatsinking). The value of
θJA for the WSON package is
specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal resistance
and power dissipation for the WSON package, refer to Application Note AN-1187 (SNOA401). It is recommended that 6 vias be placed
under the center pad to improve thermal performance.
(4)
Refer to JEDEC J-STD-020C for surface mount device (SMD) package reflow profiles and conditions. Unless otherwise stated, the
temperature and time are for Sn-Pb (STD) only.
(5)
ESD rating is based on the human body model, 100 pF discharged through 1.5 k
Ω.
Operating Conditions
(1)
Input Voltage
26V
LM2940-N NDE, LM2940-N KTT
−40°C ≤ TJ ≤ 125°C
LM2940C NDE, LM2940C KTT
0°C
≤ TJ ≤ 125°C
Temperature Range
LM2940-N DCY
−40°C ≤ TA ≤ 85°C
LM2940-N NFE, LM2940-N NAC
−55°C ≤ TJ ≤ 125°C
LM2940-N NGN
−40°C ≤ TJ ≤ 125°C
(1)
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which
the device functions but the specifications might not be ensured. For ensured specifications and test conditions see the Electrical
Characteristics.
Copyright © 2000–2013, Texas Instruments Incorporated
Submit Documentation Feedback
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