FAN5331SX Fairchild Semiconductor, FAN5331SX Datasheet
FAN5331SX
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FAN5331SX_NLTR
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FAN5331SX Summary of contents
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... 4 OFF ©2004 Fairchild Semiconductor Corporation FAN5331 Rev. 1.0.1 Description The FAN5331 is a general purpose, fixed-frequency boost con- verter designed to operate at high switching frequencies in order to minimize switching noise measured at the battery ter- minal of hand-held communications equipment. Quiescent cur- rent in normal mode of operation as well as in shutdown mode is designed to be minimal in order to extend battery life ...
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Pin Assignment Pin Description Pin No. Pin Name GND SHDN Absolute Maximum Ratings ( V to GND IN FB, SHDN to GND SW to GND Lead Soldering Temperature (10 seconds) Junction ...
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Electrical Characteristics Unless otherwise noted 3.6V Figure 3. Parameter Switch Current Limit Load Current Capability Switch On-resistance Quiescent Current OFF Mode Current Shutdown Threshold Shutdown Pin Bias Current Feedback Voltage Feedback Pin Bias Current Feedback Voltage ...
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Typical Performance Characteristics T = 25°C, Test Circuit Figure 3, unless otherwise noted. A Output Voltage vs Input Voltage 14.98 14.96 14.94 14.92 VIN(V) vs VOUT(V) at Iload=0mA 14.90 VIN(V) vs VOUT(V), at load=10mA VIN(V) vs VOUT(V), at load=20mA VIN(V) ...
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Typical Performance Characteristics T = 25°C, Test Circuit Figure 3, unless otherwise noted. A Startup After Enable R = 300 15V OUT Inductor Current= 0mA Time (200 s/div) Load Transient Response T = ...
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Block Diagram SHDN 4 Shutdown Circuitry FB 3 Circuit Description The FAN5331 is a pulse-width modulated (PWM) current-mode boost converter. The FAN5331 improves the performance of bat- tery powered equipment by significantly minimizing the spectral distribution of noise at the ...
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The inductor saturation current should be rated around 1A, which is the threshold of the internal current limit circuit. This limit is reached only during the start-up and with heavy load condition; when this event occurs the converter can shift ...
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LED Current vs Input Voltage (String Connected to FB Pin) 20.2 20.1 20.0 19.9 19.8 19.7 2.5 3.0 3.5 4.0 4.5 Input Voltage (V) The feedback loop tightly regulates the current in the branch connected to FB pin, while the ...
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... L .004 .024 0º 10º Ordering Information Product Number FAN5331 FAN5331 Rev. 1.0 Millimeters Notes Min Max .90 1.45 .00 .15 .20 .50 .08 .25 2.70 3.10 1.50 1.80 .95 BSC 1.90 BSC 2.20 3.20 .10 .60 0º 10º Package Type 5-Lead SOT23 9 Order Code FAN5331SX www.fairchildsemi.com ...
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... TRADEMARKS 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. ACEx™ FAST ActiveArray™ FASTr™ Bottomless™ FPS™ Build it Now™ FRFET™ CoolFET™ GlobalOptoisolator™ ...