LM317HV-MIL Datasheet, PDF (1/26 Pages) Texas Instruments – High Voltage Three-Terminal Adjustable Regulator With Overload Protection

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LM317HV-MIL
SNVSAY1 – JUNE 2017
LM317HV-MIL High Voltage Three-Terminal Adjustable Regulator With Overload
Protection
1 Features
•1 Up to 60 V Input to Output Differential
• 1.5-A Output Current
• Line Regulation 0.01%/V (Typical)
• Load Regulation 0.1% (Typical)
• 80-dB Ripple Rejection (Typical)
• Internal Short-Circuit Current Limiting Protection
• Thermal Overload Protection
• 0 to 125°C Operating Temperature Range
2 Applications
• Industrial Power Supplies
• PLC Systems
• Factory Automation Systems
• Building Automation Systems
• Battery Charger
1.2-V to 50-V Adjustable Regulator With High
Voltage Input
3 Description
The LM317HV-MIL is an adjustable 3-terminal
positive voltage regulator capable of supplying 1.5 A
or more currents over a 1.25-V to 57-V output voltage
range. It requires only two external resistors to set the
output voltage. The LM317HV-MIL is packaged in
standard transistor packages that are easily mounted
and handled.
The LM317HV-MIL offers overload protection like
current limit, thermal overload protection and safe
area protection, which make the device blowout
proof. The overload protection circuitry remains fully
functional even if the adjustment terminal is
disconnected.
Typically, no capacitors are needed unless the device
is situated more than 6 inches from the input filter
capacitors, in which case an input bypass is needed.
An optional output capacitor can be added to improve
transient response. The adjustment terminal can be
bypassed to achieve very high ripple rejection ratios
which are difficult to achieve with standard 3-terminal
regulators.
Since the regulator is floating and sees only the input-
to-output differential voltage, supplies of several
hundred volts can be regulated as long as the
maximum input to output differential is not exceeded,
or in other words, do not short the output to ground.
By connecting a fixed resistor between the
adjustment and output, the LM317HV-MIL can also
be used as a precision current regulator. Supplies
with electronic shutdown can be achieved by
clamping the adjustment terminal to ground, which
programs the output to 1.25 V where most loads draw
little current.
*Needed if device is more than 6 inches from filter
capacitors. .
†Optional—improves transient response
†† ^VOUT
= 1.25 V
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R2
R1
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Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TO-39 (3)
8.255 mm × 8.255 mm
LM317HV-MIL TO-3 (2)
19.507 mm × 19.507 mm
TO-220 (3)
14.986 mm × 10.16 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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.