www.fairchildsemi.com FAN8082 (KA3082N) Bi-directional DC Motor Driver Features Description • Built-in brake function for stable brake characteristics. • Built-in element to absorb a surge current derived from changing motor direction and braking motor drive. • Motor speed control by an external voltage. • Stable motor direction change. • Interfaces with CMOS devices. • Built-in the thermal shut down circuit (165°C). • Low standby current. (6.5mA) The FAN8082 is a monolithic integrated circuit designed for driving bi-directional DC motor with braking and speed control, and it is suitable for the loading motor driver of VCR, CDP, and TOY systems. The speed control can be achieved by adjusting the external voltage of the speed control pin. It has two pins of logic inputs for controlling the forward/ reverse and braking. 8-DIP-300 Typical Applications Ordering Information • Compact disk player (CDP) tray or changer • Low current DC motor such as audio or video equipment. • General DC motor Device Package Operating Temp. FAN8082 8-DIP-300 −25°C ~ +75°C Rev. 1.0.1 February. 2000. ©2000 Fairchild Semiconductor International 1 FAN8082 (KA3082N) Pin Assignments GND 1 8 VO2 VO1 2 7 PVCC VCTL 3 6 SVCC 4 5 VIN2 FAN8082 VIN1 Pin Definitions Pin Number Pin Name I/O Pin Function Description 1 GND - Ground 2 VO1 O Output 1 3 VCTL I Motor speed control 4 VIN1 I Input 1 5 VIN2 I Input 2 6 SVCC - Supply voltage (Signal) 7 PVCC - Supply voltage (Power) 8 VO2 O Output 2 Internal Block Diagram GND 1 VO1 2 DRIVER OUT 8 VO2 7 PVCC 6 SVCC 5 VIN2 PRE DRIVER VCTL VIN1 3 4 TSD LOGIC SWITCH 2 BIAS FAN8082 (KA3082N) Equivalent Circuit Description Pin No. Output 2, 8 Internal circuit Vcc Vcc 2 8 Speed control 3 Vcc Vcc VCC 3 Input 4, 5 Vcc VCC 4 5 SVCC PVCC 6 7 VCC 6 7 3 Vcc FAN8082 (KA3082N) Absolute Maximum Ratings (Ta = 25°°C) Parameter Symbol Value Unit Remark Supply voltage VCCmax 18 V - note1 A - Pd 1.0note2 W - Operating temperature TOPR −25 ~ +75 °C - Storage temperature TSTG −55 ~ +125 °C - Maxium Output current 1.6 IOmax Power dissipation NOTES: 1. Duty 1 / 100, pulse width 500µs 2. 1) When mounted on glass epoxy PCB (76.2 × 114 × 1.57mm) 2) Power dissipation reduces 9.6mV / °C for using above Ta=25°C. 3) Do not exceed Pd and SOA(Safe Operating Area). Power Dissipation Curve Pd (mW) 1, 0 SOA 0 0 25 50 75 100 150 125 15 Ambient temperature, Ta [°C] Recommened Operating Conditions (Ta = 25°°C) Parameter Operating supply voltage note Symbol Operating voltage range Unit SVCC,PVCC 7 ~ 18 V NOTE: Caution 1) PVCC ≤ SVCC Caution 2) When PVCC is above 16V, the VCTL must be opened or 8.5 ≤ VCTL ≤ PVCC 4 FAN8082 (KA3082N) Electrical Characteristics (Ta = 25°°C) Parameter Symbol Conditions Min. Typ. Max. Units Quiescent current ICC Pin4 & 6: GND, RL=∞ 4 6.5 9.5 mA Min. input-on current 1 IIN1 RL=∞, Pin4=IIN1, Pin5=L - 10 30 µA Min. input-on current 2 IIN2 RL=∞, Pin4=L, Pin5=IIN - 10 30 µA Input threshold voltage 1 VITH1 RL=∞, Pin4=VIN, Pin5=L 1.0 1.3 1.6 V Input threshold voltage 2 VITH2 RL=∞, Pin4=L, Pin5=VIN 1.0 1.3 1.6 V Output leakage current 1 IOL1 RL=∞, Pin4 & 6=GND - 0.01 1 mA Output leakage current 2 IOL2 RL=∞, Pin4 & 6=GND - 0.01 1 mA Zener current 1 IZ1 RL=∞, Pin4=H, Pin5=L - 0.85 1.5 mA Zener current 2 IZ2 RL=∞, Pin4=L, Pin5=H - 0.85 1.5 mA Output voltage 1 VO1 RL=60Ω, Pin4=H, Pin5=L 6.6 7.2 7.4 V VO2 RL=60Ω, Pin4=L, Pin5=H 6.6 7.2 7.4 V Saturation voltage 1 (Upper) V SAT1 IO=300mA - 1.9 2.3 V Saturation voltage 2 (Upper) VSAT2 IO=500mA - 1.9 2.3 V Saturation voltage 1 (Lower) VSAT3 IO=300mA - 0.25 0.5 V Saturation voltage 2 (Lower) VSAT4 IO=500mA - 0.4 0.65 V Output voltage 2 5 FAN8082 (KA3082N) Application Information 1. THERMAL SHUT DOWN CIRCUIT I Q1 V1 R1 Q2 Q3 V2 R2 When Ta = 25°C, Q2 & Q3 are Turned-off and output stage operates normally. V1 = I × (R1 + R2) V2 = R2 / (R1 + R2) × V1 = 0.37V When Ta = 165°C, Q2 & Q3 Turn-on and it turns-off the output stage. 0.70V - 0.37V = 330mV (When Q2 & Q3 are Turn-on, VbeQ2 = VbeQ3 = 0.70V) And temperature coefficient of Q2 = Q3 = −2mV / °C ∴ T.S.D: 330mV / 2mV = 165°C 2. LOGIC INPUT & OUTPUT TABLE Input Output Motor Pin #4 Pin #5 Pin #2 Pin #8 Low Low *Low *Low High Low High Low Forward Low High Low High Reverse High High *Low *Low Brake INPUT High is above 2.0V. INPUT Low is below 0.7V. *Low : All Power TRs are off-state. But internal Bias makes output Voltage low state. 6 Brake FAN8082 (KA3082N) 3. LOGIC SWITCH CIRCUIT SVCC V2 V1 4 5 Q4 Q7 Q6 Q5 3 VCTL 7.4V This circuit define reference voltage of output. When pin #4 is “H” and pin #5 is “L”, - V1 = Vzd + VbeQ4 + VbeQ5 ·=· 8.9V - V2 = Vbeq 7 + VsatQ6 ·=· 0.87V V1 and V2 are related with the output voltage of the motor and change according to the voltage of pin #3 (VCTL). 7 FAN8082 (KA3082N) 4. DRIVE OUTPUT CIRCUIT PVCC V1 V2 Q4 Q1 Q5 Q2 RL R1 VO1 R2 M VO2 Q6 Q3 V1 = 8.9V V2 = 0.87V VO1 = V1 - VBEQ1 - VBEQ2 VO2 = VQ6SAT VO = VO1 - VO2 = V1 - VBEQ1 - VBEQ2 - VQ6SAT IRL = (VO1 - VO2) / RL 8 FAN8082 (KA3082N) Typical Perfomance Chracteristics CHARACTERISTICS GRAPHS 2. Temperature vs ICC 10 9 8 7 6 ICC (mA) ICC (mA) 1. VCC vs ICC 5 4 3 2 1 0 VIN = 0V 0 2 4 6 8 10 12 14 16 18 20 10 9 8 7 6 5 4 3 2 1 0 -35 VCC = 12V VIN = 0V -15 5 25 VCC (V) 3. VCTL vs. VO 10 VO (V) VO (V) 8 6 4 VCC = 12V VIN = 5V/0V RL = 60Ω 2 0 2 4 6 8 10 12 7.7 7.6 7.5 7.4 7.3 7.2 7.1 7.0 6.9 6.8 6.7 6.6 6.5 -35 -15 25 45 65 85 6. IO vs. VSAT (LOWER) 3.0 2.5 2.0 VSAT (V) VSAT (V) 5 Temp. (°C) 5. IO vs. VSAT (UPPER) 1.5 1.0 VCC = 12V VCTL = open VIN = 5V/0V 0.5 0.0 0.4 85 VCC = 12V VCTL = 7.4V VIN = 5V/0V RL = 60Ω VCTL (V) 0.2 65 4. Temperature vs. VO 12 0 45 Temp. (°C) 0.6 0.8 1.0 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 VCC = 12V VCTL = open VIN = 5V/0V 0.2 1.2 IO (A) 0.4 0.6 0.8 IO (A) 9 1.0 1.2 FAN8082 (KA3082N) Test Circuits 1 GND 2 VO1 VO2 8 PVCC 7 FAN8082 3 VCTL SVCC 6 4 VIN1 VIN2 5 A S3 S4 S1 S2 A S5 ZD 7.4V A A VCC VIN 10 FAN8082 (KA3082N) Application Circuits 1 GND 2 VO1 3 VCTL SVCC 6 4 VIN1 VIN2 5 VO2 8 PVCC 7 VCC RS FAN8082 ZD 104 M 11 104 FAN8082 (KA3082N) 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. 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