FAN8408D Fairchild Semiconductor, FAN8408D Datasheet
FAN8408D
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FAN8408D Summary of contents
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... Built-in reverse current protection diode • Compact package: 8-SOP-225 Typical Applications • DC cooling fan motor ©2002 Fairchild Semiconductor Corporation www.fairchildsemi.com Description The FAN8408D is a monolithic integrated circuit, and suitable for DC cooling fan motors. 8-SOP-225 1 Ordering Information Device Package Operating Temp. ...
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... FAN8408D Block Diagram OUT 1 B OUT GND 8 Pin Definitions Pin Number Pin Name 1 OUT OUT A 8 GND 2 Commutation & Control & TSD I/O Pin Function Description O Motor output B O Hall output Triangle pulse generator for lock detector - and automatic restart - Supply voltage ...
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... Equivalent Circuits Description Pin No. OUT B 1 OUT IN+ 5 IN- 6 Internal Circuit 1 7 Commutation 2 Commutation Lock detector 3 & Automatic restart V LDCP V LDCL 5 Commutation 6 FAN8408D Commutation 3 ...
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... FAN8408D Absolute Maximum Ratings ( Parameter Maximum power supply voltage note1 Maximum power dissipation note1 Thermal resistance Maximum output voltage Maximum output current Hall output current Hall output withstanding voltage Maximum hall input ac level Operating temperature Storage temperature Note1: PCB Condition: Thickness(1.6mm), Dimension(76.2mm * 114.3mm) Refer: EIA/J SED 51-3 & ...
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... LDC LDD V - LDCL V - LDCP V I =200mA Clamp current=10mA =10mA HLL HLL V - HDC V V =6V HOF REF FAN8408D 5 6 Typ. Max. Unit 15.0 V Min. Typ. Max. Unit - - 3.0 mA 2.38 3.40 4.42 A 0.48 0.68 0.88 A 3.0 5.0 7.0 2.4 2.85 3.3 V 0.7 0.99 1 ...
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... Hall Input Output V LDCL V LDCP FAN8408D features a lock detection and an automatic restart. The functions can be operated as follows. 1) When the hall signal stop switching, a motor can be locked. 2) The voltage pin 3, is increasing until it reaches pin is connected to GND, the lockup protection is disabled. 4) While a motor is locked, the output repeats switching ON / OFF, but the other output is always OFF. The switching time can be determined by an external capacitor on charging / discharging time of the capacitor, switching ON / OFF time can be calculated as follows ...
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... The input bias voltage of hall amplifier is between 1V and - GND It is recommended that R1 and R3 should have the same value to make the output signal of hall sensor centered IN Hall 6 Sensor IN- R3 -2V as following figure. CC FAN8408D / ...
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... FAN8408D Operation Truth Table IN+ IN- High Low Low High Test Circuits LDC LDD OUT OUT High Low Low Low High High OUT GND OUT IN IN ...
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... Typical Application Circuits OUT OUT V GND Precaution In case of improper connection (change between power and ground), diode is required to protect motor Commutation & Control & TSD FAN8408D IN+ 5 Hall 6 IN- 9 ...
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... FAN8408D Package Dimensions (Unit: mm) 10 8-SOP-225 ...
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... FAN8408D DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...