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MMST3904 Datasheet(PDF) 7 Page - Diodes Incorporated |
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MMST3904 Datasheet(HTML) 7 Page - Diodes Incorporated |
7 / 9 page R 2 220 Vi n V o u t Q1 P N P NP N LO A D R1 10K MMST3904 MMST3906 BQ2 Control CQ1 CQ2 BQ1 EQ2 EQ1 Q2 Application Details • PNP Transistor (MMST3906) and NPN Transistor (MMST3904) integrated as one in LBN150B01 can be used as a discrete entity for general purpose applications or as a part of a circuit to function as a Load Switch. When it is used as the latter as shown in Fig 16, various input voltage sources can be used as long as they do not exceed the maximum rating of the device. These devices are designed to deliver continuous output load current up to maximum of 150 mA. The use of the NPN as a switch eliminates the need for higher current required to overcome the gate charge in the event an N-MOSFET is used. Care must be taken for higher levels of dissipation while designing for higher load conditions. These devices provides power on demand and also consume less space. It mainly helps in optimizing power usage, thereby conserving battery life in a controlled load system like portable battery powered applications. (Please see Fig. 17 for one example of typical application circuit used in conjunction with a voltage regulator as a part of power management system). Fig. 16: Example Circuit Schematic Typical Application Circuit U1 Vi n OU T 1 GN D Vo u t U2 1 3 2 4 5 6 E_ Q 1 B_ Q 2 B_ Q 1 C_ Q 2 E_ Q 2 C_ Q 1 C ontr o l U3 IN O U T Vi n 5V S uppl y GN D Load Switch Voltage Regulator LBN150B01 Diodes, Inc. Point of Load Control Logic Circuit (PIC, Comparator, etc) Fig. 17 DS30749 Rev. 3 - 2 7 of 9 www.diodes.com LBN150B01 © Diodes Incorporated |
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Similar Description - MMST3904 |
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