LM883 NSC [National Semiconductor], LM883 Datasheet

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LM883

Manufacturer Part Number
LM883
Description
Voltage Regulators
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 1999 National Semiconductor Corporation
LM105/LM305/LM305A
Voltage Regulators
General Description
The LM105 series are positive voltage regulators similar to
the LM100, except that an extra gain stage has been added
for improved regulation. A redesign of the biasing circuitry re-
moves any minimum load current requirement and at the
same time reduces standby current drain, permitting higher
voltage operation. They are direct, plug-in replacements for
the LM100 in both linear and switching regulator circuits with
output voltages greater than 4.5V. Important characteristics
of the circuits are:
• Output voltage adjustable from 4.5V to 40V
• Output currents in excess of 10A possible by adding ex-
• Load regulation better than 0.1%, full load with current
Schematic and Connection Diagrams
ternal transistors
limiting
DS007755
DS007755-1
• DC line regulation guaranteed at 0.03%/V
• Ripple rejection on 0.01%V
• 45 mA output current without external pass transistor
Like the LM100, they also feature fast response to both load
and line transients, freedom from oscillations with varying re-
sistive and reactive loads and the ability to start reliably on
any load within rating. The circuits are built on a single silicon
chip and are supplied in a TO-99 metal can.
The LM105 is specified for operation for −55˚C
+125˚C, and the LM305/LM305A is specified for 0˚C
+70˚C.
(LM305A)
SMD # 5962-8958801, LM305H or LM305AH
Order Number LM105H, LM105H/883,
See NS Package Number H08C
Metal Can Package
Top View
DS007755-3
www.national.com
June 1999
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LM883 Summary of contents

Page 1

LM105/LM305/LM305A Voltage Regulators General Description The LM105 series are positive voltage regulators similar to the LM100, except that an extra gain stage has been added for improved regulation. A redesign of the biasing circuitry re- moves any minimum load current ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. (Note 5) Input Voltage Input-Output Differential Power Dissipation (Note 1) Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering, ...

Page 3

Electrical Characteristics (Note 2) (Continued) Note 1: The maximum junction temperature of the LM105 and LM305A is 150˚C, and the LM305 is 85˚C. For operation at elevated temperatures, devices in the H08C package must be derated based on a thermal ...

Page 4

Typical Performance Characteristics Minimum Output Voltage DS007755-24 Typical Applications 10A Regulator with Foldback Current Limiting † Solid tantalum. *Electrolytic † Protects against shorted input or inductive leads on unregulated supply. *Protects against input voltage reversal. †† Protects against output voltage ...

Page 5

Typical Applications (Continued) Linear Regulator with Foldback Current Limiting Switching Regulator † Solid tantaium. †† 125 turns = 22 on Arnold Engineering A262123-2 molybdenum permally core. Current Regulator DS007755-8 Shunt Regulator DS007755-10 Basic Positive Regulator with Current Limiting DS007755-11 5 ...

Page 6

Typical Applications (Continued) † Protects against shorted input or inductive loads on unregulated supply. *Protects against input voltage reversal. †† Protects against output voltage reversal. Linear Regulator with Foldback Current Limiting www.national.com 1.0A Regulator with Protective Diodes 6 DS007755-13 DS007755-14 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM105H, LM105H/883, SMD # 5962-8958801, LM305H or LM305AH LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN ...

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