FAN5009MPX Fairchild Semiconductor, FAN5009MPX Datasheet
FAN5009MPX
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FAN5009MPX Summary of contents
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... On Low Battery Detect In Low Battery Detect Out ©2005 Fairchild Semiconductor Corporation FAN4855 Rev. 1.0.1 General Description The FAN4855 is a low power boost regulator designed for low voltage conversion in 2-cell battery powered systems such as digital cameras, cell phones and PDAs. The converter starts-up at 1.3V and operates after the start at an input voltage as low as 1V ...
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Pin Configuration Pin Description Pin Name 1 V Battery Input Voltage. Supplies the IC during start-up. After the output is running, the IC draws IN power from V 2 SHDN Shut Down. Pulling this pin low shuts down the regulator, ...
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Recommended Operating Conditions Parameter Ambient Temperature Range V Operating Range IN V Operating Range OUT Electrical Characteristics Unless otherwise specified 1. +25°C A Parameter Start Up Voltage Operating Voltage Output Voltage Output ...
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VIN 2 1 1.6V to 3.0V R1 750K SHDN 2 1 Reset 47µF R2 240K Ext Pull GND 2 1 FAN4855 Rev. 1.0.1 10uH U1 FAN4855 JP2 1 8 Vin Gnd 2 7 ...
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Typical Operating Characteristics Load Current vs. Start-Up Voltage (Resistive Load) 600 500 V = 3.3V OUT 400 300 200 100 0 1.5 2 2.5 Input Voltage, V Efficiency vs. Load Current Vout = 5V 100.0 Vin=3V 90.0 80.0 Vin=2.0V Vin=1.5V ...
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Typical Operating Characteristics No Load Supply Current vs. Input Voltage 1000 “ON” OUT 100 V = 3.3V OUT 10 “OFF” Input Voltage (V) FAN4855 Rev. 1.0 10µ 47µF, ...
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Typical Operating Characteristics Line Transient Response @100mA Load Load Transient Response Heavy-Load Switching Waveforms FAN4855 Rev. 1.0.1 (Continued) Inductor Current and Switching Node Voltage OUT 7 Exiting Shutdown V OUT V SHDN Load Transient Response ...
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Block Diagram LBO 4 LBI 3 – 0.39V V V OUT IN Start-Up 1 Minimum Off-Time Logic Variable On-Time One Shot I SHDN LIMIT Functional Description Boost Regulator FAN4855 is an adjustable boost regulator that combines variable ON ...
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The synchronous rectifier significantly improves effi- ciency without the addition of an external component, so that conversion efficiency can be as high as 94% over a large load range, as shown in the Typical Operating Characteristics. Even at light loads, ...
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Layout and Grounding Considerations Careful design of printed circuit board is recommended since high frequency switching and high peak currents are present in DC/DC converters applications. A general rule is to place the converter circuitry well away from any sensitive ...
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Mechanical Dimensions Package: T08, 8-Pin TSSOP 0.113 - 0.123 (2.87 - 3.12) 8 PIN 0.026 BSC (0.65 BSC) 0.008 - 0.012 0.033 - 0.037 (0.20 - 0.30) (0.84 - 0.94) FAN4855 Rev. 1.0.1 0.169 - 0.177 0.246 ...
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... The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. FAST ACEx™ ActiveArray™ FASTr™ Bottomless™ FPS™ Build it Now™ FRFET™ CoolFET™ GlobalOptoisolator™ ...