FAN8025G3 Fairchild Semiconductor, FAN8025G3 Datasheet
FAN8025G3
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FAN8025G3 Summary of contents
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... Other compact disk media ©2003 Fairchild Semiconductor Corporation www.fairchildsemi.com Description The FAN8025G3 is a monolithic IC, suitable for 2-ch BTL DC motor drivers, 2-ch motor drivers with current feedback which drive the focus and the tracking actuator and 1-ch logic input loading driver. ...
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... FAN8025G3 Pin Assignments (GND) FIN FAN8025G3 FIN (GND ...
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... Drive1 Output ( ) O Drive2 Output ( ) O Drive2 Output ( ) O Drive3 Output ( ) O Drive3 Output ( ) P Power for channel 1,2 and 3 A CH3 input A CH2 input A Bias voltage input I CH2,3,4 and 5 mute signal input P Power for channel 4and 5 O Drive4 Output (+) O Drive4 Output ( ) O Drive5 Output ( ) O Drive5 Output ( ) FAN8025G3 3 ...
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... FAN8025G3 Internal Block Diagram 10k IN4 9 CAP4 CAP4.2 10k IN5 1 CAP5 CAP5.2 SGND 8 10k IN3 20 10k IN2 21 CTL 10 FWD 11 REV 12 MUTE 23 REF 22 4 VCC1 VCC1 20k 7.5k 7.5k VCC1 VCC1 VCC1 20k 7.5k 7.5k TSD VCC1 20k VCC1 20k VCC1 VCC2 ...
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... Equivalent Circuits CH2/3/4/5 Inputs VCC1 1K Ref 10K VCC1 4 5 VCC1 1K Current Feedback Amp Compensation Inputs VCC1 VCC1 7.5K 7.5K Current Feedback Inputs VCC1 10K 20K Drive output - Current Feedback Amp Outputs VCC1 VCC1 10K 20K FAN8025G3 10K 10K 5 ...
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... FAN8025G3 Equivalent Circuits(continued) CH1 Inputs(FWD/REV) VCC1 30K 11 12 30K Mute Input VCC1 100K 40K 23 40K CH1/2/3 Drive Outputs VCC1 30K 20K 6 10 VCC1 CH1 Control Input(CTL) VCC1 VCC1 40K 10K 35K Ref Input CH4/5 Drive Outputs VCC1 VCC2 25 30K 20K 1K ...
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... SOA 1,000 Recommended Operating Conditions ( Parameter Supply Voltage Symbol V CC1,2max OPR T STG 1mm PCB (Phenolic resin material 100 125 150 Symbol Min. V 4.5 CC1,2 Value Unit 15 V note 2.5 W -35 ~ +85 C -55 ~ +150 C 175 Ambient Temperature Typ. Max. Unit - 13.2 V FAN8025G3 7 ...
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... FAN8025G3 Electrical Characteristics (Unless otherwise specified test circuit) Parameter Quiescent Current1 Quiescent Current1 Mute On Voltage Mute Off Voltage REF input voltage range REF input current range* ACTUATOR DRIVER(CH4,CH5) Output Offset Current45 Maximum Output Voltage45 Transconductance Control voltage input range45* SLED/SPINDLE DRIVER(CH2,CH3) ...
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... VCC2 is the power supply for CH4 and CH5, which are current feedback drivers. • VCC1 (PIN 19) VCC1 is the power supply for CH1, CH2, CH3 and predriver. VCC1 input voltage must be higher than or same to VCC2. (VCC1 VCC2) CH1 CH2 CH3 FAN8025G3 =12V. CC1 CH4 CH5 ...
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... FAN8025G3 4. Current feedback channels(channel 4 & 5) 20k 10k Command ref • The reference voltage(ref) is given externally through pin 22. • The input OP-amp output signal is amplified by (20K/10K) times and then fed to the current feedback amplifier. • The current feedback amplifier compares the output current sensed input and command input then makes the controlled output to eliminate delay effect of the load ...
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... FWD and REV are logic inputs to select output driver’s direction. • Below table is FWD and REV logic input table. Input FWD REV Vpref Vpref Output DO1+ DO1- Vpref Vpref Vpref Vpref FAN8025G3 DO1 DO1- 14 condition Brake Forward Reverse Brake 11 ...
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... FAN8025G3 Typical Application Circuits SERVO FOCUS IC SPIN COMMAND SPINDLE SLED COMMAND SLED TRACKING LOADING 12 IN1 1 2 CAP5.1 3 CAP5.2 FB5 4 FB4 5 CAP4.1 6 CAP4.2 7 FAN8025G3 PGND SGND 8 IN4 9 CTL 10 FWD 11 12 REV DO1+ 13 LOADING MOTOR DO1 14 DO5 28 FOCUS R CS ACTUATOR DO5+ 27 DO4 26 TRACKING ...
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... FAN8025G3 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. ...