FAN5333B Fairchild Semiconductor, FAN5333B Datasheet
FAN5333B
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FAN5333B Summary of contents
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... OFF ©2005 Fairchild Semiconductor Corporation FAN5333A/FAN5333B Rev. 1.0.1 Description The FAN5333A/FAN5333B is a general purpose LED driver that features fixed frequency mode operation and an integrated FET switch. The device’s high output power makes it suitable to drive flash LEDs in serial connections. This device is designed to ...
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... Pin Description Pin No. Pin Name GND SHDN FAN5333A/FAN5333B Rev. 1.0.1 Top View GND FB SHDN 5-Lead SOT-23 Figure 2. Pin Assignment Pin Description Switching Node . Analog and Power Ground . Feedback Pin. Feedback node that connects to an external current set resistor. ...
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... Using EIA/JESD22A114B (Human Body Model) and EIA/JESD22C101-A (Charge Device Model). 3. This load capacitance value is required for the loop stability. Tolerance, temperature variation, and voltage dependency of the capacitance must be considered. Typically a 1µF ceramic capacitor is required to achieve specified value at V FAN5333A/FAN5333B Rev. 1.0.1 Note1) Parameter ...
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... Shutdown Pin Bias Current Feedback Pin Bias Current Feedback Voltage Line Regulation Switching Frequency Maximum Duty Cycle Switch Leakage Current OVP Thermal Shutdown Temperature Test Circuit 10µF ON OFF FAN5333A/FAN5333B Rev. 1.0.1 = 20V 20mA, T OUT LED A Conditions FAN5333A FAN5333B 20V 3.2V OUT ...
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... Input Voltage (V) LED Current vs Temperature 10.6 10.4 10 3.6V IN 10.0 9.8 9.6 -40 - Temperature (°C) FAN5333A/FAN5333B Rev. 1.0.1 = 0.47µ 10µH, unless otherwise noted. 100 OUT 10mA LED 60 I LED 50 4.0 4.5 5.0 5.5 2.0 Maximum Load Current vs.Input Voltage 200 V = 15V OUT 150 100 T = 85° ...
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... Typical Performance Characteristics T = 25° 4.7µ OUT Load Current vs.Input Voltage Input Voltage (V) FAN5333A/FAN5333B Rev. 1.0.1 (Contd.) = 0.47µ 10µH, unless otherwise noted 15V OUT Start-Up Response L = 10µ 10µ 1µF OUT V = 2.7V IN Time (100µs/div) ...
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... V ping the boost switching with an external voltage supervisory circuit. Applications Information Setting the Output Current The internal reference (V and 315mV (Typical) for FAN5333B. The output current is set by a resistor divider R connected between FB pin and ground. The output current is given ...
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... Inductor Selection The inductor parameters directly related to device performances are saturation current and dc resistance. The FAN5333A/ FAN5333B operates with a typical inductor value of 10µH. The lower the dc resistance, the higher the efficiency. Usually a trade-off between inductor size, cost and overall efficiency is needed to make the optimum choice ...
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... F Figure 8. Dimming Using Filtered PWM Signal FAN5333A/FAN5333B Rev. 1.0.1 Thermal Shutdown When the die temperature exceeds 150°C, a reset occurs and will remain in effect until the die cools to 130°C, at that time the circuit will be allowed to restart. PCB Layout Recommendations The inherently high peak currents and switching frequency of power supplies require careful PCB layout design ...
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... B .008 .020 c .003 .010 D .106 .122 E .059 .071 e .037 BSC e1 .075 BSC H .087 .126 L .004 .024 0º 10º Ordering Information Product Number FAN5333A FAN5333B FAN5333A/FAN5333B 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 ...
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... PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Preliminary No Identification Needed Obsolete FAN5333A/FAN5333B Rev. 1.0.1 ISOPLANAR™ PowerSaver™ LittleFET™ PowerTrench MICROCOUPLER™ QFET QS™ MicroFET™ QT Optoelectronics™ ...