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PDF LM305AH Data sheet ( Hoja de datos )
| Número de pieza | LM305AH | |
| Descripción | Voltage Regulators | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM305AH (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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June 1999
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-
ternal transistors
• Load regulation better than 0.1%, full load with current
limiting
• DC line regulation guaranteed at 0.03%/V
• Ripple rejection on 0.01%V
• 45 mA output current without external pass transistor
(LM305A)
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 ≤ TA ≤
+125˚C, and the LM305/LM305A is specified for 0˚C ≤ TA ≤
+70˚C.
Schematic and Connection Diagrams
Metal Can Package
DS007755-3
Top View
Order Number LM105H, LM105H/883,
SMD #5962-8958801, LM305H or LM305AH
See NS Package Number H08C
DS007755-1
© 1999 National Semiconductor Corporation DS007755
www.national.com
1 page  
Typical Applications (Continued)
Linear Regulator with Foldback Current Limiting
Current Regulator
DS007755-8
Shunt Regulator
DS007755-9
Switching Regulator
DS007755-10
Basic Positive Regulator with Current Limiting
†Solid tantaium.
††125 turns =22 on Arnold
Engineering A262123-2 molybdenum permally core.
DS007755-11
DS007755-12
5 www.national.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LM305AH.PDF ] | |
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