TI-LM137JAN.pdf
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LM137JAN
www.ti.com
SNVS332B –DECEMBER 2010–REVISED MARCH 2013
LM137JAN 3-Terminal Adjustable Negative Regulators
Check for Samples: LM137JAN
The LM137 serves a wide variety of applications
1
FEATURES
including local on-card regulation, programmable-
2
• Output Voltage Adjustable from −37V to −1.2V
output voltage regulation or precision current
• 1.5A Output Current Specified, −55°C to
regulation. The LM137 are ideal complements to the
+150°C
LM117 adjustable positive regulators.
• Line Regulation Typically 0.01%/V
Connection Diagram
• Load Regulation Typically 0.3%
• Excellent Thermal Regulation, 0.002%/W
• 77 dB Ripple Rejection
• Excellent Rejection of Thermal Transients
• 50 ppm/°C Temperature Coefficient
• Temperature-independent Current Limit
• Internal Thermal Overload Protection
• Standard 3-lead Transistor Package
Case is Input
• Output is Short Circuit Protected
Figure 1. TO-3
Metal Can Package
DESCRIPTION
Bottom View
The LM137 are adjustable 3-terminal negative
See Package Number K0002C
voltage regulators capable of supplying in excess of
−1.5A over an output voltage range of −37V to −1.2V.
These regulators are exceptionally easy to apply,
requiring only 2 external resistors to set the output
voltage and 1 output capacitor for frequency
compensation. The circuit design has been optimized
for excellent regulation and low thermal transients.
Further, the LM137 series features internal current
limiting, thermal shutdown and safe-area
Case Is Input
compensation, making them virtually blowout-proof
against overloads.
Figure 2. TO
Metal Can Package
Bottom View
See Package Number NDT0003A
Table 1. LM137 Series Packages and Power Capability
Device Package Rated Power Dissipation Design Load Current
TO-3 (K) 20W 1.5A
LM137
TO (NDT) 2W 0.5A
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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