FAN8301MX Fairchild Semiconductor, FAN8301MX Datasheet
FAN8301MX
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... Consumer Appliances (DVD) Auxiliary Supplies Ordering Information Operating Part Number Temperature Range FAN8301MX -40°C to +85°C For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 Description The FAN8301 is a monolithic, non-synchronous, step- down (buck) regulator with internal power MOSFETs ...
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... Internal Block Diagram © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 Figure 2. Functional Block Diagram 2 www.fairchildsemi.com ...
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... Ground FB 5 Feedback COMP 6 Compensation EN 7 Enable SS 8 Soft-Start © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0 VIN EN SW COMP GND FB Figure 3. Pin Configuration (Top View) Description High-Side Drive BOOT Voltage. Connect through capacitor (C IC includes an internal synchronous bootstrap diode to recharge the capacitor on this pin to V when SW is LOW ...
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... Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Symbol V Supply Voltage IN T Operating Ambient Temperature A © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 Parameter Human Body Model, JEDEC JESD22-A114 Charged Device Model, JEDEC JESD22-C101 Parameter 4 Min. Max. ...
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... Supply Current (Shutdown) OFF I Supply Current (Quiescent Current Sense Gain CS G Error Amplifier Transconductance EA A Error Amplifier Voltage Gain VEA TSD Thermal Shutdown Temperature © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 Condition Min. 0.58 T =25°C, 4.75V<V <16V =0V > ...
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... CH3(SW) : 10V, 50µs/div. CH4(Io) : 1A, 50µs/div. CH1 ΔV =240mV O Slew Rate( 2.5A/µs) CH4 CH3 CH2 Figure 8. Load Transient Response (0.5A to 1.5A) © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 =10μF, C =22μF, T =+25°C, unless otherwise noted. IN OUT A CH2 CH1 CH3 ...
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... Temperature [ ] Figure 14. Oscillator Frequency vs. Temperature © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 (Continued) =10μF, C =22μF, T =+25°C, unless otherwise noted. IN OUT A CH1 CH2 CH3 CH1(VO) : 2V, 20µ/div. CH2(VIN) : 4V, 20µs/div. ...
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... It is accomplished internally by adding a compensating ramp to the inductor current signal at duty cycles in excess of 50%. © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 Maximum Load Current at Low V The FAN8301 is able to operate with input supply voltage as low as 4 ...
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... C VEA where the error amplifier transconductance (380µA/V the error amplifier voltage gain (400V/V); and VEA C is the compensation capacitor. C © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 Zero is due to the compensation capacitor (C resistor (R ) calculated by the following equation π ⋅ ...
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... MLCC 3.3V 15µH 5V 22µH © 2008 Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 Layout Consideration As for all switching power supplies careful attention to PCB layout is important to the design. A few design rules can be implemented to ensure good layout: Keep the high-current traces and load connections ⎞ ...
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... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...
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... Fairchild Semiconductor Corporation FAN8301 • Rev. 1.0.0 12 www.fairchildsemi.com ...