LM337-N-MIL Datasheet, PDF (1/20 Pages) Texas Instruments – 3-Terminal Adjustable Negative Regulators

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LM337-N 3-Terminal Adjustable Negative Regulators
LM337-N-MIL
SNVSAX3 – JUNE 2017
1 Features
•1 1.5-A Output Current
• Line Regulation 0.01%/V (Typical)
• Load Regulation 0.3% (Typical)
• 77-dB Ripple Rejection
• 50 ppm/°C Temperature Coefficient
• Thermal Overload Protection
• Internal Short-Circuit Current Limiting Protections
2 Applications
• Industrial Power Supplies
• Factory Automation Systems
• Building Automation Systems
• PLC Systems
• Instrumentation
• IGBT Drive Negative Gate Supplies
• Networking
• Set-Top Boxes
3 Description
The LM337-N-MIL is an adjustable 3-terminal
negative voltage regulator capable of supplying
−1.5 A or more currents over an output voltage range
of −1.25 V to −37 V. It requires only two external
resistors to set the output voltage and one output
capacitor for frequency compensation. The circuit
design has been optimized for excellent regulation
and low thermal transients. Further, the LM337-N-MIL
features internal current limiting, thermal shutdown
and safe-area compensation, making it virtually
blowout-proof against overloads.
The LM337-N-MIL is an ideal complement to the
LM117 and LM317 adjustable positive regulators.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOT-223 (4)
3.50 mm × 6.50 mm
LM337-N-MIL
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
TI DEVICE
Full output current not available at high input-output voltages
-V_OUT
=
-1.25V
æçè₁₊
R2
120
ö
÷ø
+
(-I_ADJ
´ R2)
†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.