www.fairchildsemi.com FAN8000D (KA9268D) 4-CH Motor Driver Features Description • • • • • • • The FAN8000D is a monolithic integrated circuit, suitable for 4-CH motor driver which drives tracking actuator, focus actuator, sled motor and tray motor of CD/CD-ROM/DVD system. Built in 4-CH balanced transformerless(BTL) driver Output gain adjustable Built in normal OP-amp Built in mute function Built in level shift circuit Built in thermal shutdown function Operating range 4.5~13.2V 28-SSOPH-375 Target Application • • • • Ordering Information Compact disk player Video compact disk player Digital Video Disk Player Car compact disk player Device Package Operating Temp. FAN8000D 28-SSOPH-375 −40°C ~ +85°C FAN8000DTF 28-SSOPH-375 −40°C ~ +85°C Rev. .1.0.1 February. 2000. ©2000 Fairchild Semiconductor International 1 FAN8000D (KA9268D) DO3.1 OPIN (+) OPIN (−) 21 20 19 18 17 16 15 8 9 10 11 12 13 14 DO2.2 GND2 OPOUT 22 DO3.2 VCC2 23 DO2.1 VREF 24 DI3.1 DI4.1 25 DI2.2 DI4.2 26 DI3.2 DO4.2 27 DI2.1 DO4.2 28 VCC1 GND3 Pin Assignments FIN (GND) 2 3 4 5 6 7 DO1.2 DI1.1 DI1.2 REG REO MUTE FIN (GND) GND1 1 DO1.1 FAN8000D Pin Definitions Pin Number Pin Name I/O 1 DO1.1 O Drive output Pin Function Descrition 2 DO1.2 O Drive output 3 DI1.1 I Drive input 4 DI1.2 I Drive input 5 REG - Regulator 6 REO O Regulator output 7 MUTE I Mute 8 GND1 - Ground 1 9 DI2.1 I Drive input 10 DI2.2 I Drive input 11 DO2.1 O Drive output 12 DO2.2 O Drive output 13 GND2 - Ground 2 14 OPOUT O Op-amp output 15 OPIN(−) I Op-amp input (−) 16 OPIN(+) I Op-amp input (+) 17 DO3.1 O Drive output 18 DO3.2 O Drive output 19 DI3.1 I Drive input 20 DI3.2 I Drive input 21 VCC1 - Supply voltage 22 VCC2 - Supply voltage 23 VREF I 2.5V bias voltage 24 DI4.1 I Drive input 2 FAN8000D (KA9268D) Pin Definitions (Continued) Pin Number Pin Name I/O Pin Function Descrition 25 DI4.2 I Drive input 26 DO4.1 O Drive output 27 DO4.2 O Drive output 28 GND3 - Ground 3 22 OPIN (−) VCC2 23 OPIN(+) VREF 24 DO3.1 DI4.1 25 DO3.2 DI4.2 26 DI3.1 DO4.1 27 DI3.2 DO4.2 28 FIN (GND) VCC1 GND3 Internal Block Diagram 21 20 19 18 17 16 15 10k + − 10k + − + TSD Level shift 10k 10k + − − + Level shift − − Regulator 10k + 50k 10k − 50k 10k + − 7 DI1.1 DI1.2 REG REO MUTE (GND) FIN 3 8 9 10 11 12 13 14 OPOUT 6 GND2 5 DO2.2 4 DO2.1 3 DI2.2 2 DI2.1 1 DO1.2 10k DO1.1 10k Level shift GND1 − 10k Mute + Level shift + + + − − FAN8000D (KA9268D) Equivalent Circuits Driver input Driver output VCC 10k 50 3 10 2.5V 11.8k 19 25 1 2 11 12 17 18 26 27 20k 50 4 100 9 0.58k 20 24 VREF1 Regulator VCC VCC Regulator output VCC 53k VCC 23k VCC 50 5 2k 6 50 10k 10k 10k Mute input Bias input VCC 100k 50 50k 23 50 7 50k 4 2k FAN8000D (KA9268D) Equivalent Circuits (Continued) Op amp output Op amp input VCC VCC VCC VCC VCC 15 50 16 50 14 50 50 50 4.8k 4.8k Absolute Maximum Ratings ( Ta=25°°C) Parameter Symbol Value Unit VCC 18 V PD 1.7note W Operating temperature TOPR −40 ~ +85 °C Storage temperature TSTG −55 ~ +150 °C Maximum output current IOMAX 1 A Supply voltage Power dissipation Notes: 1. When mounted on 76.2mm × 114mm × 1.57mm PCB (Phenolic resin material). 2. Power dissipation reduces 13.6mW / °C for using above Ta=25°C 3. Do not exceed Pd and SOA (Safe Operating Area). Pd (mW) 3,000 2,000 1,000 0 0 25 50 75 100 125 150 175 Ambient temperature, Ta [°C] Recommended Operating Condition ( Ta=25°°C) Parameter Operating supply voltage Symbol Value Unit VCC 4.5 ~ 13.2 V 5 FAN8000D (KA9268D) Electrical Characteristics (Unless otherwise specified, Ta = 25 °C, VCC = 8V, RL=8Ω) REGULATOR CIRCUIT Min. Typ. Max. Units Regulator output voltage Parameter Symbol VREG IL=100mA Conditions 4.75 5 5.25 V Load regulation ∆VRL IL=0 ~ 200mA −40.0 0 10.0 mV Line regulation ∆VCC IL=200mA, VCC=6 ~ 9V −10.0 0 20.0 mV Symbol Conditions Min. Typ. Max. Units 5.5 9.5 13.5 mA mV DRIVE CIRCUIT Parameter VI=0 Quiescent circuit current ICCQ Input offset voltage VOF - −5.0 0 5.0 Output offset voltage VOO - −30 0 30 ISINK RL=4Ω, VCC 0.5 0.8 - Maximum source current ISOURCE RL=4Ω, GND 0.5 0.8 - Maximum output voltage VOM VI=2VRMS, 1kHz 2.5 3.0 - V Closed loop voltage gain AVF VI=0.1VRMS, 1kHz 10.5 12.0 13.5 dB Ripple rejection ratio RR VI=−20dB, 120Hz 60.0 80.0 - Slew rate SR 100Hz, Square wave 1.0 2.0 - V / µs Maximum sink current A OP AMP CIRCUIT Parameter Input offset voltage Symbol Conditions Min. Typ. Max. Units VOF1 - −5 - +5 mA IB1 - - - 300 nA High level output voltage VOH1 - 6 - - V Low level output voltage VOL1 - - - 1.8 V Output sink current ISINK1 RL=50Ω, GND 10 40 - mA ISOURCE1 RL=50Ω, VCC 10 50 - mA Input bias current Output source current Open loop voltage gain GVO1 VIN=−75dB, f=1kHz 65 78 - dB Ripple rejection ratio RR1 VIN=−20dB, f=120kHz 50 70 - dB Slew Rate SR1 Square, VOUT=2Vp-p, f=120kHz 0.5 1 - V / µs VIN=−20dB, f=1kHz 70 84 - dB Common mode rejection ratio CMRR1 6 FAN8000D (KA9268D) Application Information 1. MUTE Pin #7 Mute circuit High Turn-off Low Turn-on Open Turn-on Output driver bias 7 • When the pin7 is open or the voltage of the pin7 is below 0.5V, the mute circuit is activated so that the output circuit is muted. • When the voltage of the pin7 is above 2V, the mute circuit is deactivated and the output circuit operates normally. • If the chip temperature rises above 175°C, then the TSD (Thermal Shutdown) circuit is activated and the output circuit is muted. 2. TSD (THERMAL SHUTDOWN) VREF BG Output driver bias R11 Q11 R12 • The VREF BG is the output voltage of the band-gap-referenced biasing circuit and acts as the input voltage of the TSD circuit. • The base-emitter voltage of the TR, Q11 is designed to turn-on at below voltage. VBE = VREF BG × R12 / (R11 + R12) = 460mV • When the chip temperature rises up to 175°C, then the turn-on voltage of the Q11 would drop down to 460mV. (Hysteresis: 25°C) Hence, the Q11 would turn on so the output circuit will be muted. 7 FAN8000D (KA9268D) 3. OP-AMP OP-amp is integrated in the IC for user’s convenience. AMP-I(+) 16 pin + AMP -I(−) 15 pin − 14 pin AMP-O 4. DRIVER VREF (2.5V) 3 + − 10 −∆I AMP Level shift Buffer + − Q1 4 100 9 20 10k +∆I 24 +∆V Q2 M 19 25 10k −∆V + Q3 Buffer − 1 2 11 12 17 18 27 26 Q4 • The voltage, VREF, is the reference voltage given by the bias voltage of the pin23. • The input signal through the pin3 is amplified by 10k/10k times and then fed to the level shift. • The level shift produces the current due to the difference between the input signal and the arbitrary reference signal. The current produced as +∆I and −∆I is fed into the driver buffer. • Driver Buffer drives the power TR of the output stage according to the input signal. • The output stage is the BTL driver and the motor is rotating in forward direction by operating TR Q1 and TR Q4. On the other hand, if TR Q2 and TR Q3 is operating, the motor is rotating in reverse direction • When the input voltage through the pin3 is below the VREF, the motor rotates in forward direction. • When the input voltage through the pin3 is above the VREF, the motor rotates in reverse direction. • To change the gain, pin4 or 24 can be used. 5. Connect a by-pass capacitor, 0.1µ µF between the supply voltage source. VCC1 22 VCC2 21 104 6. Radiation fin is connecting to the internal GND of the package. Connect the fin to the external GND. 8 FAN8000D (KA9268D) Typical Performance Characteristics VCC vs. ICC VCC vs. Imute 13.5 10 8 Imute [mA] ICC [mA] 11.5 9.5 PIN23=2.5V 7.5 6 4 2 5.5 Vc c = var i 0 4 6 8 10 12 14 16 18 0 4 6 8 10 12 14 VCC [V] VCC [V] VCC vs. Ireg 20 1300 5.15 1100 5.05 Isink [mA] Vreg [V] 18 VCC vs. Isink 5.25 4.95 900 PIN23=2.5V RL=4Ω 700 PIN23=2.5V 4.85 4.75 500 4 6 8 10 12 14 16 18 20 4 6 8 10 12 VCC [V] VCC [V] VCC vs. Isource Temp. vs. Isink 1400 1300 1200 1250 14 1200 1000 Isink [m Isource [mA 16 800 1150 1100 PIN23=2.5V RL=4Ω 600 400 4 6 8 10 12 PIN23=2.5V RL=4Ω 1050 1000 -25 14 VCC [V] 0 25 50 Temp [°C] 9 75 100 FAN8000D (KA9268D) Typical Performance Characteristics (Continued) Temp vs. ICC Temp vs. ICCM 6 13..5 5 ICCM [mA] ICC [mA 11.5 9.5 7.5 5.5 0 25 50 75 3 2 VCC=13V PIN23=2.5V 1 PIN23=2.5V -25 4 0 -25 100 0 25 50 Temp [°C] Temp [°C] 1500 5.15 1400 5.05 4.95 4.85 4.75 -25 25 50 Temp [°C] 1300 1200 PIN23=2.5V RL=4Ω 1100 VCC=13V 0 100 Temp vs. ISOURCE 5.25 Isource [mA Vreg [V Temp vs. VREG 75 75 1000 -25 100 10 0 25 50 Temp [°C] 75 100 FAN8000D (KA9268D) Test Circuits 50kΩ 50kΩ OPI + 470µF SW17 + 10µF SW15 1kΩ 0 3 2 10kΩ SW16 SW14 SW8 1 + 1000µF 10kΩ 1kΩ 0 SW9 2 PC-V V 1 0 1 1MΩ 1 Open 1MΩ 0 0 SW6 1 Short 2 2 15 2 1 OPIN(−) OPOUT 14 4Ω 4Ω 4Ω 16 OPIN(+) GND2 13 V V 17 DO3.1 DO2.2 12 8Ω SW7 SW10 18 DO3.2 DO2.1 11 DR2 10µF + 19 DI3.1 DI2.2 10 20 DI3.2 DI2.1 9 21 VCC1 GND 8 + 10µF DR3 VCC 22 2.5V F A N 8 0 0 0 VCC2 D MUTE MUTE SW4 1 2 7 23 Vref REO 6 24 DI4.1 VREF 5 25 DI4.2 DI1.2 4 26 DO4.1 DI1.1 3 27 DO4.2 DO1.2 2 28 GND3 1 + 100µF DR4 + 8Ω IL KS8772 10µF Pin 21, 22 DR1 + 10µF SW13 8Ω DO1.1 SW3 4Ω 4Ω V 1 2 1 2 4Ω 4Ω SW11 0 SW12 0 1 SW1 0 11 SW5 2 2 SW2 FAN8000D (KA9268D) Application Circuits 15 OPIN(−) OPOUT 14 16 OPIN(+) GND2 13 17 DO3.1 DO2.2 12 18 DO3.2 DO2.1 11 19 DI3.1 DI2.2 10 SLED MOTOR SPINDLE SERVO 20 DI3.2 SLED BIAS 21 VCC1 VCC 22 VCC2 23 Vref TRACKING AMP FOCUS TRACKING ACTUATOR F A N 8 0 0 0 D DI2.1 9 MUTE OFF: HIGH ON: LOW GND 8 5V MUTE 7 REG.OUT REO 6 24 DI4.1 VREF 5 25 DI4.2 DI1.2 4 26 DO4.1 DI1.1 3 27 DO4.2 DO1.2 2 28 GND3 DO1.1 1 12 SPINDLE MOTOR KSB772 VCC FOCUS ACTUATOR FAN8000D (KA9268D) 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 INTERNATIONAL. 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 12/1/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International