Lm2940
Found 3 free book(s)
Linear and Switching Voltage Regulator Fundamental Part 1
www.ti.comgain of 9 or higher. The LM2940 (which is a 1A LDO regulator) has a ground pin current specification of 45 mA (max) at full current. This requires a current gain of no less than 22 for the PNP pass transistor at rated current. THE QUASI LOW-DROPOUT REGULATOR A variation of the Standard regulator is the quasi-LDO, which uses an NPN and PNP
LM2940x 1-A Low Dropout Regulator datasheet (Rev. J)
www.ti.comLM2940-N TO-263 (3) 10.18 mm x 8.41 mm TO-220 (3) 14.986 mm x 10.16 mm TO-263 (3) 10.18 mm x 8.41 mm LM2940C TO-220 (3) 14.986 mm x 10.16 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Schematic *Required if regulator is located far from power supply filter.
LM2940/LM2940C 1A 低ドロップアウト3 端子レギュレータ
www.tij.co.jplm2940は一般的なレギュレータの特長である、ショート・サーキッ ト・プロテクシ ョンとサーマル・シャットダウン機能も備えています。 特長 標準ドロップアウト電圧は 0.5v@io ＝1a 1a以上の出力電流 アセンブリ前に出力調整されている。