LP3205-12B5F POWER [Lowpower Semiconductor inc], LP3205-12B5F Datasheet

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... PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency. The 2.5V to 5.5V input voltage range makes the LP3205 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and handy-terminals ...

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... Typical Application Circuit LP3205 – Ver. 1.0 Datasheet Feb.-2007 Preliminary Datasheet LP3205 LP3205 MURATA LQH32CN2R2M33 TAIYO YUDEN JMK212BJ475MG TAIYO YUDEN JAK316BJ106ML LP3205 V =0.6V REF(Typ.) Page ...

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... Operation Temperature Range ■ Junction Temperature ■ Storage Temperture ■ Lead Temp(Soldering,10sec) ■ ESD Rating(HBM) ■ LP3205 – Ver. 1.0 Datasheet Feb.-2007 Preliminary Datasheet Pin Function Power Input Ground. Chip Enable(Active High). Feedback Input Pin,Reference voltage is 0.6 V Pin For Switching LP3205 -0 ...

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... PRDS(ON) NMOSFET IOUT = RON 200mA NRDS(ON) P-Channel VIN =2.2 IP(LM) Current Limit to 5.5V EN VEN Threshold EN Leakage VENL Current LP3205 – Ver. 1.0 Datasheet Feb.-2007 Preliminary Datasheet Test Conditions I =0mA,V =0. =90% OUT FB OUT I =0mA,V =0.62V or V OUT FB OUT EN = GND,Vin=4.2V For adjustable output voltage VIN = 2.2 to 5.5V, VOUT = 1.2V 0A < ...

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... Typical Operating Characteristics LP3205 – Ver. 1.0 Datasheet Feb.-2007 Preliminary Datasheet LP3205 Page ...

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... LP3205 – Ver. 1.0 Datasheet Feb.-2007 Preliminary Datasheet LP3205 Page ...

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... Applications Information The basic LP3205 application circuit is shown in Typical Application Circuit. External component selection is determined by the maximum load current and begins with the selection of the inductor value and operating frequency followed by CIN and COUT. Inductor selection The output inductor is selected to limit the ripple current to some predetermined value ...

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... B bottom switches. Both the DC bias and gate charge losses are proportional to V and thus their effects will be more IN pronounced at higher supply voltages. LP3205 – Ver. 1.0 Datasheet Feb.-2007 Preliminary Datasheet 2. 1 switches the average output current flowing through inductor loss dominates the “ ...

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... VOUT can be monitored for overshoot or ringing that would indicate a stability problem. Layout Considerations Follow the PCB layout guidelines for optimal performance of LP3205. For the main current paths as indicated in bold lines, keep their traces short and wide. Put the input capacitor as close as possible to the device pins (VIN and GND). ...

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... Packaging Information LP3205 – Ver. 1.0 Datasheet Feb.-2007 Preliminary Datasheet SOT23-5 LP3205 Page ...