LM317HV_15 Datasheet, PDF (1/28 Pages) Texas Instruments – LMx17HV High Voltage Three-Terminal Adjustable Regulator With Overload Protection

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LM117HV, LM317HV
SNVS773D – APRIL 2000 – REVISED SEPTEMBER 2015
LMx17HV 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
• –55 to 150°C Operating Temperature Range
(LM117HV)
• 0 to 125°C Operating Temperature Range
(LM317HV)
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 LMx17HV 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 LMx17HV is packaged in standard
transistor packages that are easily mounted and
handled.
The LMx17HV 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 LMx17HV 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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Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
LM117HV
LM317HV
TO-39 (3)
TO-3 (2)
8.255 mm × 8.255 mm
19.507 mm × 19.507 mm
LM317HV
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.