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LM345K-5.0 数据表(PDF) 1 Page - National Semiconductor (TI) |
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LM345K-5.0 数据表(HTML) 1 Page - National Semiconductor (TI) |
1 / 6 page TLH7785 January 1995 LM145LM345 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 componenta 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 28V 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 TLH7785 – 1 C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
类似零件编号 - LM345K-5.0 |
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类似说明 - LM345K-5.0 |
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