FAN8082DTF

www.fairchildsemi.com FAN8082D 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 FAN8082D 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-SOP-225 Typical Applications • Compact disk player (CDP) tray or changer • Low current DC motor such as audio or video equipment. • General DC motor Ordering Information Device Package Operating Temp. FAN8082D 8-SOP-225 −25°C ~ +75°C FAN8082DTF 8-SOP-225 −25°C ~ +75°C Rev. 1.0.0 ©2001 Fairchild Semiconductor Corporation BI-DIRECTIONAL DC MOTOR DRIVER Pin Assignments GND 1 8 VO2 VO1 2 7 PVCC VCTL 3 6 SVCC VIN1 4 5 VIN2 FAN8082D 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 2 VCTL 3 VIN1 4 TSD LOGIC SWITCH BIAS BI-DIRECTIONAL DC MOTOR DRIVER Equivalent Circuit Description Pin No. Internal circuit Vcc Vcc Output 2, 8 2 8 Vcc Vcc Speed control VCC 3 3 Vcc Vcc VCC Input 4, 5 4 5 VCC SVCC PVCC 6 7 6 7 3 BI-DIRECTIONAL DC MOTOR DRIVER Absolute Maximum Ratings (Ta = 25°°C) Parameter Symbol Value Unit Remark Supply voltage VCCmax 13 V - A - Pd 330note2 mW - Operating temperature TOPR −25 ~ +75 °C - Storage temperature TSTG −55 ~ +125 °C - Maxium Output current 0.8 note1 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 2.64mW / °C for using above Ta=25°C. 3) Do not exceed Pd and SOA(Safe Operating Area). Power Dissipation Curve Pd (mW) 330 SOA 0 0 25 50 75 100 150 125 15 Ambient temperature, Ta [°C] Recommened Operating Conditions (Ta = 25°°C) Parameter Operating supply voltage Symbol Operating voltage range Unit (Signal)note SVCC 7 ~ 12 V note PVCC 4~8 V Operating supply voltage (Power) NOTE: Caution 1) PVCC ≤ SVCC Caution 2) VCTL must be opened or 4.0 ≤ VCTL ≤ PVCC 4 BI-DIRECTIONAL DC MOTOR DRIVER Electrical Characteristics (SVCC=PVCC=12V,Ta = 25°°C) Parameter Symbol Conditions Min. Typ. Max. Unit Quiescent current ICC Pin4 & 5: 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 BI-DIRECTIONAL DC MOTOR DRIVER 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 Pin #5 Pin #2 Pin #8 Low Low *Low *Low Standby 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 Motor Pin #4 BI-DIRECTIONAL DC MOTOR DRIVER 3. Logic Switch Circuit SVCC V2 V1 4 5 Q4 Q7 Q6 Q5 3 VCTL 7.4V ZD *ZD : External Component 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). 4. Drive Output Circuit PVCC V1 V2 Q4 Q1 Q2 Q5 RL R1 VO1 R2 M Q3 VO2 Q6 V1 = 8.9V V2 = 0.87V VO1 = V1 - VBEQ1 - VBEQ2 VO2 = VQ6SAT VO = VO1 - VO2 = V1 - VBEQ1 - VBEQ2 - VQ6SAT IRL = (VO1 - VO2) / RL 7 BI-DIRECTIONAL DC MOTOR DRIVER Typical Perfomance Chracteristics CHARACTERISTIC GRAPHS 2. Temperature vs ICC 1. VCC vs ICC 10 9 8 7 6 5 4 3 2 1 0 -35 ICC (mA) ICC(mA) 10 9 8 7 6 5 4 3 2 1 0 VIN = 0V 0 2 4 6 8 10 12 VCC(V) 14 16 18 20 VCC = 12V VIN = 0V -15 Figure 1. VCC vs ICC 10 V O (V) VO (V) 8 6 4 VCC = 12V VIN = 5V/0V RL = 60Ω 2 0 6 VCTL(V) Figure 3. VCTL vs VO 4 8 10 12 2.0 V SAT (V) V SAT (V) 2.5 1.5 1.0 VCC = 12V VCTL = ope VIN = 5V/0V 0.5 0.0 8 0.6 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 VCC = 12V VCTL = 7.4V VIN = 5V/0V RL = 60Ω -15 5 25 45 Temp.(° C) 65 85 5. IO vs. VSAT(LOWER) 3.0 0.4 85 Figure 4. Temperature vs VO 5. IO vs. VSAT(UPPER) 0.2 65 4. Temperature vs. Vo 12 2 25 45 Temp.(° C) Figure 2. Temperature vs ICC 3. VCTL vs. Vo 0 5 0.8 1.0 IO(A) Figure 5. IO vs VSAT(UPPER) 1.2 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 0.4 0.6 0.8 1.0 IO(A) Figure 6. IO vs VSAT(LOWER) 1.2 BI-DIRECTIONAL DC MOTOR DRIVER Test Circuits 1 GND 2 VO1 3 VCTL SVCC 6 4 VIN1 VIN2 5 VO2 8 PVCC 7 FAN8082D A S3 S4 S1 S2 A S5 ZD 7.4V A A VCC VIN 9 BI-DIRECTIONAL DC MOTOR DRIVER Application Circuits 1 GND 2 VO1 3 VCTL SVCC 6 4 VIN1 VIN2 5 VO2 8 VCC RS PVCC 7 FAN8082D 104 ZD 104 M *Must 10 use RS. BI-DIRECTIONAL DC MOTOR DRIVER 11 BI-DIRECTIONAL DC MOTOR DRIVER 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. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 10/25/01 0.0m 001 Stock#DSxxxxxxxx  2001 Fairchild Semiconductor Corporation