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LM137H Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte LM137H
Spiegazioni elettronici  3-Terminal Adjustable Negative Regulators
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Homepage  http://www.ti.com
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LM137, LM337-N
SNVS778E – MAY 1999 – REVISED JANUARY 2016
LM137, LM337-N 3-Terminal Adjustable Negative Regulators
1 Features
3 Description
The LM137 and LM337-N are adjustable 3-terminal
1
1.5-A Output Current
negative voltage regulators capable of supplying
Line Regulation 0.01%/V (Typical)
−1.5 A or more currents over an output voltage range
Load Regulation 0.3% (Typical)
of
−1.25 V to −37 V. It requires only two external
resistors to set the output voltage and one output
77-dB Ripple Rejection
capacitor for frequency compensation. The circuit
50 ppm/°C Temperature Coefficient
design has been optimized for excellent regulation
Thermal Overload Protection
and low thermal transients. Further, the LM137 and
LM337-N feature internal current limiting, thermal
Internal Short-Circuit Current Limiting Protections
shutdown and safe-area compensation, making it
virtually blowout-proof against overloads.
2 Applications
The LM137 and LM337-N are ideal complements to
Industrial Power Supplies
the LM117 and LM317 adjustable positive regulators.
Factory Automation Systems
The LM137 has a wider operating temperature range
Building Automation Systems
than the LM337-N and is also offered in military and
PLC Systems
space qualified versions.
Instrumentation
Device Information(1)
IGBT Drive Negative Gate Supplies
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Networking
LM137
TO (3)
8.255 mm × 8.255 mm
Set-Top Boxes
SOT-223 (4)
3.50 mm × 6.50 mm
LM337-N
TO (3)
8.255 mm × 8.255 mm
TO-220 (3)
10.16 mm × 14.986 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet. The LF01 is a lead formed (bent)
version of the TO-220 package.
Adjustable Negative Voltage Regulator
Full output current not available at high input-output voltages
†C1 = 1-
μF solid tantalum or 10-μF aluminum electrolytic required for stability
*C2 = 1-
μF solid tantalum is required only if regulator is more than 4″ from power-supply filter capacitor
Output capacitors in the range of 1-
μF to 1000-μF of aluminum or tantalum electrolytic are commonly used to provide
improved output impedance and rejection of transients
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.


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