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Part Number: MRLM137-K-RH
Description: The LM137K is an adjustable 3-terminal negative voltage regulator capable of supplying in excess of 1....
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MRLM137-K-RH
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General Description
MRLM137-K-RH General Description
The LM137K is an adjustable 3-terminal negative voltage regulator capable of supplying in excess of 1.5A over an output voltage range of -1.2V to -37V. This regulator is 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. Futher, the LM137K features internal current limiting, thermal shutdown and safe-area compensation, making it virtually blowout-proof against overloads.
The LM137K serves a wide variety of applications including local on-card regulation, programmable-output voltage regulation or precision current regulation. The LM137K is an ideal complement to the LM117K adjustable positive regulator.
MRLM137-K-RH Maximum Ratings
Power Dissipation...........Internally Limited
Input-Output Voltage Differential..........40V
Operating Junction Temperature....-55 C to +150 C
Maximum Junction Temperature
(Note 2)......................150 C
Maximum Power Dissipation
(@ 25 C)....................28 Watts
Minimum Input Voltage.......... ...-41.25V
Storage Temperature... ..... .-65 C to +150 C
Lead Temperature
(Soldering, 10 seconds)..... ..... ... 300 C
Thermal Resistance
ThetaJA
(Still Air)..................... 40 C/W
(500LF/Min Air Flow) ...............14 C/W
ThetaJC...................... 4 C/W
Package Weight
(Typical) ....................12750mg
ESD Rating
(Note 3)......................4000V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Rating indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is Pdmax = (Tjmax - TA) /ThetaJA or the number given in the Absolute Maximum Ratings, whichever is lower.
Note 3: Human body model, 100pF discharged through 1.5K Ohms
Input-Output Voltage Differential..........40V
Operating Junction Temperature....-55 C to +150 C
Maximum Junction Temperature
(Note 2)......................150 C
Maximum Power Dissipation
(@ 25 C)....................28 Watts
Minimum Input Voltage.......... ...-41.25V
Storage Temperature... ..... .-65 C to +150 C
Lead Temperature
(Soldering, 10 seconds)..... ..... ... 300 C
Thermal Resistance
ThetaJA
(Still Air)..................... 40 C/W
(500LF/Min Air Flow) ...............14 C/W
ThetaJC...................... 4 C/W
Package Weight
(Typical) ....................12750mg
ESD Rating
(Note 3)......................4000V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Rating indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is Pdmax = (Tjmax - TA) /ThetaJA or the number given in the Absolute Maximum Ratings, whichever is lower.
Note 3: Human body model, 100pF discharged through 1.5K Ohms
MRLM137-K-RH Features
· Output voltage adjustable from -1.2V to -37V
· 1.5A output current guaranteed, -55 C to +150 C
· Line regulation typically 0.01%/V
· Load regulation typically 0.3%
· Excellent thermal regulation, 0.002%/W
· 50 ppm/ C temperature coefficient
· Temperature-independent current limit
· Internal thermal overload protection
·Stantard 3-lead transistor package
·Output short circuit protected
· CONTROLLING DOCUMENTS
LM137KPQML 5962P9951702QYA
LM137KPQMLV 5962P9951702VYA
MRLM137-K-RH REV 0A0
PDF/DataSheet Download
- Datasheet: MRLM137-K-RH REV 0A0
- File Size: 115210 KB
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