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LM2940S-10 数据表(PDF) 4 Page - Texas Instruments

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部件名 LM2940S-10
功能描述  1A Low Dropout Regulator
Download  37 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM2940S-10 数据表(HTML) 4 Page - Texas Instruments

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LM2940-N, LM2940C
SNVS769J – MARCH 2000 – REVISED DECEMBER 2014
www.ti.com
6 Specifications
6.1 Absolute Maximum Ratings
(1) (2)
MIN
MAX
UNIT
LM2940-N KTT, NDE, DCY
≤ 100 ms
60
V
LM2940C KTT, NDE
≤ 1 ms
45
Internally
Internal power dissipation(3)
Limited
Maximum junction temperature
150
TO-220 (NDE), Wave (10 s)
260
Soldering
DDPAK/TO-263 (KTT) (30 s)
235
temperature(4)
°C
SOT-223 (DCY) (30 s)
260
WSON-8 (NGN) (30 s)
235
Storage temperature, Tstg
−65
150
(1)
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Recommended 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 (5 V and 8 V).
(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, RθJA, 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 R θJA (for devices in still air with no heatsink) is 23.3°C/W for
the TO-220 package, 40.9°C/W for the DDPAK/TO-263 package, and 59.3°C/W for the SOT-223 package. The effective value of RθJA
can be reduced by using a heatsink (see Heatsinking for specific information on heatsinking). The value of RθJA 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 Leadless Leadframe Package (LLP) (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.
6.2 ESD Ratings
VALUE
UNIT
V(ESD)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)
±2000
V
(1)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
Input voltage
6
26
V
LM2940-N NDE, LM2940-N KTT
−40
125
LM2940C NDE, LM2940C KTT
0
125
Temperature
°C
LM2940-N DCY
−40
85
LM2940-N NGN
−40
125
4
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Copyright © 2000–2014, Texas Instruments Incorporated
Product Folder Links: LM2940-N LM2940C


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