LM340-MIL Datasheet, PDF (1/22 Pages) Texas Instruments – Wide VIN 1.5-A Fixed Voltage Regulator

Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
LM340-MIL Wide V_IN 1.5-A Fixed Voltage Regulator
LM340-MIL
SNOSD64 – JUNE 2017
1 Features
•1 Output Current up to 1.5 A
• Available in Fixed 5-V, 12-V, and 15-V Options
• Internal Thermal Overload, Short-Circuit and SOA
Protection
• Available in Space-Saving SOT-223 Package
• Output Capacitance Not Required for Stability
2 Applications
• Industrial Power Supplies
• SMPS Post Regulation
• HVAC Systems
• AC Inventors
• Test and Measurement Equipment
• Brushed and Brushless DC Motor Drivers
• Solar Energy String Invertors
3 Description
The LM340-MIL monolithic 3-pin positive voltage
regulators employ internal current-limiting, thermal
shutdown and safe-area compensation, making them
essentially indestructible. If adequate heat sinking is
provided, they can deliver over 1.5-A output current.
They are intended as fixed voltage regulators in a
wide range of applications including local (on-card)
regulation for elimination of noise and distribution
problems associated with single-point regulation. In
addition to use as fixed voltage regulators, these
devices can be used with external components to
obtain adjustable output voltages and currents.
Considerable effort was expended to make the
regulator easy to use and minimize the number of
external components. It is not necessary to bypass
the output, although this does improve transient
response. Input bypassing is needed only if the
regulator is located far from the filter capacitor of the
power supply.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TO-3 (2)
38.94 mm x 25.40 mm
LM340-MIL
TO-220 (3)
14.986 mm × 10.16 mm
DDPAK/TO-263 (3) 10.18 mm × 8.41 mm
SOT-23 (4)
6.50 mm × 3.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Available Packages
Pin 1. Input
2. Ground
3. Output
2
Tab/Case is Ground or Output
1
TO-3
1₂₃
TO-220
Fixed Output Voltage Regulator
INPUT
OUTPUT
C1⁽¹⁾
0.22 …F
GND
C2⁽²⁾
123
TO-263
123
SOT-223
(1) Required if the regulator is located far from
the power supply filter.
(2) Although no output capacitor is needed for
stability, it does help transient response. (If
needed, use 0.1-μF, ceramic disc).
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.