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LM133K Datasheet

  • LM133K

  • National Semiconductor [3-Ampere Adjustable Negative Regula...

  • NSC

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LM133/LM333 3-Ampere Adjustable Negative Regulators
May 1998
LM133/LM333
3-Ampere Adjustable Negative Regulators
General Description
The LM133/LM333 are adjustable 3-terminal negative volt-
age regulators capable of supplying in excess of 鈭?.0A over
an output voltage range of 鈭?.2V to 鈭?2V. These regulators
are exceptionally easy to apply, requiring only 2 external re-
sistors to set the output voltage and 1 output capacitor for
frequency compensation. The circuit design has been opti-
mized for excellent regulation and low thermal transients.
Further, the LM133 series features internal current limiting,
thermal shutdown and safe-area compensation, making
them substantially immune to failure from overloads.
The LM133/LM333 serve a wide variety of applications in-
cluding local on-card regulation, programmable-output volt-
age regulation or precision current regulation. The LM133/
LM333 are ideal complements to the LM150/LM350
adjustable positive regulators.
Features
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Output voltage adjustable from 鈭?.2V to 鈭?2V
3.0A output current guaranteed, 鈭?5藲C to +150藲C
Line regulation typically 0.01%/V
Load regulation typically 0.2%
Excellent rejection of thermal transients
50 ppm/藲C temperature coefficient
Temperature-independent current limit
Internal thermal overload protection
P
+
Product Enhancement tested
Standard 3-lead transistor package
Output is short circuit protected
Connection Diagrams
TO-3
Metal Can Package
TO-220
Plastic Package
DS009065-1
Bottom View
Steel TO-3 Metal Can Package (K STEEL)
Order Number LM133K STEEL or
LM333K STEEL
See NS Package Number K02A
DS009065-2
Front View
3-Lead TO-220 Plastic Package (T)
Order Number LM333T
See NS Package Number T03B
漏 1999 National Semiconductor Corporation
DS009065
www.national.com

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