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PDF LM345 Data sheet ( Hoja de datos )
| Número de pieza | LM345 | |
| Descripción | Negative Three Amp Regulator | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM345 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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January 1995
LM145 LM345 Negative Three Amp Regulator
General Description
The LM145 is a three-terminal negative regulator with a
fixed output voltage of b5V and up to 3A load current capa-
bility This device needs only one external component a
compensation capacitor at the output making it easy to ap-
ply Worst case guarantees on output voltage deviation due
to any combination of line load or temperature variation
assure satisfactory system operation
Exceptional effort has been made to make the LM145 im-
mune to overload conditions The regulator has current lim-
iting which is independent of temperature combined with
thermal overload protection Internal current limiting pro-
tects against momentary faults while thermal shutdown pre-
vents junction temperatures from exceeding safe limits dur-
ing prolonged overloads
Although primarily intended for fixed output voltage applica-
tions the LM145 may be programmed for higher output volt-
ages with a simple resistive divider The low quiescent drain
current of the device allows this technique to be used with
good regulation
The LM145 comes in a hermetic TO-3 package rated at
25W A reduced temperature range part LM345 is also avail-
able
Features
Y Output voltage accurate to better than g2%
Y Current limit constant with temperature
Y Internal thermal shutdown protection
Y Operates with input-output voltage differential of 2 8V at
full rated load over full temperature range
Y Regulation guaranteed with 25W power dissipation
Y 3A output current guaranteed
Y Only one external component needed
Y Pa Product Enhancement tested
Schematic Diagram
C1995 National Semiconductor Corporation TL H 7785
TL H 7785 – 1
RRD-B30M115 Printed in U S A
1 page  
Physical Dimensions inches (millimeters)
Metal Can Package (K)
Order Number LM345K-5 0
NS Package Number K02A
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LM345.PDF ] | |
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