www.fairchildsemi.com FAN8005D2 3-CH Motor Driver Features Description • • • • • • • The FAN8005D2 is a monolithic integrated circuit, suitable for a 3-ch motor driver which drives focus actuator, tracking actuator, and sled motor of a CD-media system. 3-Channel BTL (Balanced transformer-less) driver Built-in variable regulator with reset (Series-REG) Built-in thermal shutdown circuit Built-in power save circuit Built-in general OP-amp Operating supply voltage: 4.5V ~ 5.5V Corresponds to 3.3V or 5V DSP Typical Applications • Compact disk player • Digital video disk player • Compact disk ROM 28-SSOPH-300 Ordering Information Device Package Operating Temp. FAN8005D2 28-SSOPH-300 −35°C ~ +85°C FAN8005D2TF 28-SSOPH-300 −35°C ~ +85°C Rev. 1.0.2 ©2001 Fairchild Semiconductor Corporation 2 3 4 IN.1 IN.2 OUT1 6 OUT2 5 IN2.2 2 IN2.1 1 REF 22 7 FIN(GND) 8 9 10 11 12 13 14 DO1− OPIN− 23 DO1+ OPIN+ 24 DO2− OPOUT 25 DO2+ OUT3 26 PS IN3.2 27 VM12 IN3.1 28 REGOX VM3 VREGX RESX DO3+ DO3− PGND FIN(GND) SGND VCC FAN8005D2 Pin Assignments 21 20 19 18 17 16 15 FAN8005D2 FAN8005D2 Pin Definitions Pin Number Pin Name I/O Pin Function Descrition 1 REF I Bias voltage input 2 IN1.1 I Op-amp CH1 input (+) 3 IN1.2 I Op-amp CH1 input (−) 4 OUT1 O Op-amp CH1 output 5 IN2.1 I Op-amp CH2 input (+) 6 IN2.2 I Op-amp CH2 input (−) 7 OUT2 O Op-amp CH2 output 8 SGND - Signal ground 9 VM12 - BTL CH1, 2 supply voltage 10 PS I Power save 11 DO2+ O Drive2 output (+) 12 DO2− O Drive2 output (−) 13 DO1+ O Drive1 output (+) 14 DO1− O Drive1 output (−) 15 PGND - Power ground 16 DO3− O Drive3 output (−) 17 DO3+ O Drive3 output (+) 18 RESX I Regulator reset 19 VREGX O Op-amp output 20 VM3 - BTL CH3 supply voltage 21 REGOX I Op-amp input(+) 22 OPIN− I Op-amp input (−) 23 OPIN+ I Op-amp input (+) 24 OPOUT O Op-amp output 25 OUT3 O Op-amp CH3 output 26 IN3.2 I Op-amp CH3 input (−) 27 IN3.1 I Op-amp CH3 input (+) 28 VCC - Supply voltage 3 FAN8005D2 PGND 20 19 18 17 16 15 + −− + REGULATOR − + + −- 10k + ++ −− − + VM3 TSD 20k 10k 10k 21 10k 22 DO3(−) OPIN− 23 DO3(+) OPIN+ 24 10k OPOUT 25 RESX OUT3 26 VREGX IN3.2 27 VM3 IN3.1 28 FIN (GND) REGOX VCC Internal Block Diagram + −- + 10k VM12 + IN1.2 OUT1 IN2.1 IN2.2 OUT2 10k 10k 10k 8 9 10 11 12 13 14 DO1(−) IN1.1 (GND) FIN + DO1(+) 7 − DO2(−) 6 + DO2(+) 5 10k 10k 4 − + PS 3 − VM12 2 LEVEL SHIFT SGND 1 REF 50k + VM12 + − − + 10k − 50k 4 LEVEL SHIFT ++ -− ++ -− −- 10k 10k + − 10k + 10k − 10k FAN8005D2 Equivalent Circuits Error amp input Power save input 2 3 5 6 27 50Ω 50Ω 50Ω 50kΩ 10 26 50kΩ Error amp output Signal reference input 4 6 50Ω 1 50Ω 0.2kΩ 25 Power output Regulator reset 11 12 13 14 50Ω 50kΩ 18 16 17 30kΩ 5 FAN8005D2 Equivalent Circuits (Continued) Regulator Regulator output 50Ω 21 19 50Ω General op amp input General op amp output 24 22 23 50Ω 6 50Ω FAN8005D2 Absolute Maximum Ratings ( Ta=25°°C) Parameter Maximum supply voltage Symbol Value Unit VCCmax 7 V PD @1.4 W Operating temperature range TOPR −35 ~ +85 °C Storage temperature range TSTG −55 ~ +150 °C Power dissipation Notes: 1. When mounted on a 76.2mm × 114mm × 1.57mm PCB (Phenolic resin material). 2. Power dissipation reduces 11.2mW / °C for using above Ta = 25°C 3. Do not exceed PD and SOA (Safe operating area). PD (Temporary) Pd (mW) 2,000 1,200 SOA 400 0 0 25 50 75 85 100 125 150 175 Ambient temperature, Ta [°C] Recommended Operating Conditions ( Ta=25°°C) Parameter Supply voltage Symbol Min. Typ. Max. Unit VCC 4.5 - 5.5 V 7 FAN8005D2 Electrical Characteristics (Unless otherwise specified, Ta=25°C, VCC=VM12=VM3=5V) Parameter Symbol Conditions Min. Typ. Max. Unit Quiescent current ICC VIN=0V - 13 - mA Power save on current IPS PS pin=GND - - 1 mA Power save on voltage VPSon - - - 0.5 V Power save off voltage VPSoff - 2 - - V BTL DRIVE CIRCUIT Output offset voltage 1 VOO1 VIN=2.5V (CH1,2) −50 - +50 mV Output offset voltage 2 VOO2 VIN=2.5V (CH3) −60 - +60 mV Maximum output voltage 1 VOM1 VCC=5V, RL=8Ω (CH1, 2) 2.7 3.5 - V Maximum output voltage 2 VOM2 VCC=5V, RL=24Ω (CH3) 3 3.8 - V Closed loop voltage gain 1 GVC1 f=1kHz, VIN=0.1VRMS (CH1, 2) 10.5 12 13.5 dB Closed loop voltage gain 2 GVC2 f=1kHz, VIN=0.1VRMS (CH3) 16 18 20 dB Ripple rejection ratio RR VIN=0.1VRMS, f=120Hz - 60 - dB Slew rate SR VO=2Vp-p, f=120kHz - 1 - V/µs ERROR AMP CIRCUIT Input offset voltage VOFOP - −20 - +20 mV IBOP - - - 300 nA 4.5 4.8 - V Input bias current High level output voltage VOHOP VCC=5V, RL=10kΩ Low level output voltage VOLOP VCC=5V, RL =10kΩ - 0.2 0.5 V ISINK VCC=5V, RL= 1kΩ 1 3 - mA ISOURCE VCC=5V, RL=1kΩ 1 3 - mA SROP f=120kHz, 2Vp-p - 1 - V/µs Output sink current Output source current Slew rate GENERAL OP AMP CIRCUIT Input offset voltage VOFOP - −20 - +20 mV IBOP - - - 300 nA Input bias current High level output voltage VOHOP VCC=5V, RL=1kΩ 3 4 - V Low level output voltage VOLOP VCC=5V, RL =1kΩ - 1 1.3 V ISINK VCC=5V, RL= 50Ω 2 5 - mA ISOURCE VCC=5V, RL=50Ω 2 5 - mA VIN=−75dB, f=1kHz - 75 - dB Output sink current Output source current Open loop voltage gain GVO Ripple rejection ratio RROP VIN=−20dB, f =120Hz - 65 - dB Slew rate SROP f=120kHz, 2Vp-p - 1 - V/µs Common mode rejection ratio CMRR VIN=−20dB, f=1kHz - 80 - dB VARIABLE REGULATOR CIRCUIT 8 Regulator output voltage VREG IL=100mA 3.0 - 4.5 V Load regulation ∆VR1 IL=0→200mA −40 - 10 mV Line regulation ∆VCC IL=200mA, VCC=5→8V −20 - 30 mV FAN8005D2 Application Information 1. Reference Input & Power Save Function Pin 1 (REF) is a reference input pin. • Reference input The applied voltage at the reference input pin must be between 1.5V and 3.5V, when VCC=5V. • Power save input The following input conditions must be satisfied for the power save function. Power save on voltage Below 0.5V Power save function operation Power save off voltage Above 2V Normal operation 2. Protection Function Thermal shutdown (TSD) • If the chip temperature rises above 175°C, the thermal shutdown (TSD) circuit is activated and the output circuit is in the mute state, that is off state. The TSD circuit has a temperature hysteresis of 25°C. 3. Regulator & Reset Function The regulator configuration with the external components is illustrated in figure 1. • The external circuit is composed of the KSB772 PNP transistor and a capacitor about 33µF, and two feedback resistors R1, R2. The capacitor operates both as a ripple eliminator and as a compensator of the feedback loop. • The output voltage (REG OUT) is R1 Vout = 1 + -------- × 2.5 R2 • When the voltage of pin18 (Vreset) is 0V, the regulator reset function is activated, and the output voltage (REG OUT) becomes 0V. Otherwise, if the voltage of pin 18 is 5V, the regulator operates properly. VCC REG OUT KSB772 + Vreset R1 R2 19 21 + FAN8005D2 18 − 2.5V Figure 1. Regulator circuit 9 FAN8005D2 4. Focus / Tracking Actuator Sled Motor Drive Part R2 R1 OPin+ 2 5 27 OPin- 3 6 26 OPout 4 7 25 Vref Vin + − R1 Vp R2 1 R1 − DOP + R2 11 13 17 12 14 16 M R2 + DON − R2 VM12 Dp 60k + − 62k Vp Qp • The voltage, Vref is the reference voltage given by the external bias voltage of the pin 1. • The input signal (Vin) through pins 3,6 and 26 are amplified one time and then fed to the output stage. (assume that input opamp was used as a buffer) • The total closed loop voltage gain is as follows (assume that R2=2R1) Vin = Vref + ∆V DOP = Vp + 2 ∆V DON = Vp – 2 ∆V Vout = DOP – DON = 4 ∆V Vout Gain = 20 log ------------- = 20 log 4 = 12dB ∆V • To change the total closed loop voltage gain, Use the input opamp as an amplifier • The output stage is the balanced transformerless (BTL) driver. • The bias voltage Vp is expressed as ; 62k Vp = ( PVCC1 – VDp – VcesatQp ) × -------------------------- + VcesatQp 60k + 62k PVCC1 – VDp + VcesatQp = --------------------------------------------------------------------------- + VcesatQp 1.97 10 ---------- (1) FAN8005D2 Typical Performance Characteristics < VCC & ICC > ICC (mA) < VCC & VOM > VOM (V) 14 10 9 CH1 CH2 CH3 12 8 10 7 6 8 5 6 4 3 4 Ta= 25 ℃ VCC= VM12= VM3 8Ω Ω (CH1,2) RL1= 8 24Ω Ω (CH3) RL2= 24 2 Ta=25℃ ℃ VCC=VM12=VM3 1 2 0 0 3 6 9 12 15 2 5 8 11 14 VCC (V) VCC (V) < IOM & VOUT > VOUT (V) < VCC & GVC > GVC (dB) 20 4.5 18 4 16 CH1 Upp. CH1 Low CH2 Upp. CH2 Low CH3 Upp. CH3 Low 3.5 3 2.5 2 14 12 10 8 1.5 6 Ta= 25℃ 25 ℃ VCC= VM12= VM3 1 0.5 2 0 Ta= 25℃ 25℃ VCC= VM12= VM3 RL1= 8Ω (CH1,2) RL2= 24 Ω (CH3) CH1 CH2 CH3 4 0 0 100 200 300 400 500 600 700 3 5 7 9 11 13 15 17 VOUT (V) 19 21 VCC (V) IOM (mA) < VCC & VOUT (LINE REGULATION) > VOUT (V) 4 < IO & VOUT (LOAD REGULATION) > 3.40 3.35 3.30 3 3.25 3.20 2 3.15 3.10 1 Ta= 25℃ 25℃ VCC= 5V 3.05 Ta= 25℃ 25℃ 3.00 0 4 6 8 10 12 14 16 VCC (V) 18 0 200 400 600 800 1000 IO (mA) 11 FAN8005D2 Typical Performance Characteristics (Continued) Isource (mA) < VCC & Isource (ERROR OP-AMP) > < VCC & Isink (ERROR OP-AMP) > Isink (mA) 16 5 CH1 CH2 CH3 14 12 4 10 3 8 6 2 CH1 CH2 CH3 1 4 Ta= 25℃ 25℃ RL= 1KΩ 1KΩ Ta= 25℃ 25℃ RL= 1KΩ 1KΩ 2 0 0 3 6 9 12 3 15 6 9 12 15 VCC (V) VCC (V) < VCC & Isource (GENERAL OP-AMP) > Isource (mA) 120 25 100 20 80 15 60 10 40 Ta= 25℃ 25℃ RL= 50Ω 50Ω 5 < VCC & Isink (GENERAL OP-AMP) > Isink (mA) 30 20 Ta= 25℃ 25℃ RL= 50Ω 50Ω 0 0 3 6 9 12 3 15 6 9 12 < TEMP & GVC > GVC (dB) 15 VCC (V) VCC (V) TEMP & LINE REGULATION Δ VCC (mV) 20 20 18 16 16 14 12 12 10 8 8 6 CH1 CH2 CH3 4 2 VCC= VM12= VM3= 4.5V RL1= 8Ω 8Ω (CH1,2) RL2= 24Ω 24 Ω (CH3) 4 0 0 - 40 - 20 0 20 40 60 80 TEMP (℃ ℃) 12 VCC= 6V→ 6V →9V IL= 200mA 100 - 40 - 20 0 20 40 60 80 100 TEMP (℃ ℃) FAN8005D2 Application Circuits 1 (Differential PWM control mode) BIAS VOLTAGE SERVO AMP SLED PWM2 FOCUS REF VCC 28 2 IN1.1 IN3.1 27 3 IN1.2 IN3.2 26 4 OUT1 OUT3 25 5 IN2.1 OPOUT 24 6 IN2.2 OPIN+ 23 7 OUT2 OPIN− 22 VCC BIAS BIAS PWM1 PWM2 TRACKING 1 PWM1 PWM1 PWM2 BIAS FAN8005D2 VARIABLE REGULATOR 8 SGND REGOX 21 9 VM12 VM3 20 5V 5V PS 10 PS VREGX 19 11 DO2+ RESX 18 12 DO2− DO3+ 17 13 DO1+ DO3- 16 14 DO1− PGND 15 TRACKING ACTUATOR VCC REGULATOR RESET SLED MOTOR FOCUS ACTUATOR 13 FAN8005D2 Application Circuits 2 (Voltage control mode) BIAS VOLTAGE 1 REF VCC 28 SERVO AMP SLED 2 IN1.1 IN3.1 27 FOCUS 3 IN1.2 IN3.2 26 TRACKING 4 OUT1 OUT3 25 5 IN2.1 OPOUT 24 6 IN2.2 OPIN+ 23 7 OUT2 OPIN- 22 VCC FAN8005D2 33uF 8 SGND REGOX 21 9 VM12 VM3 20 VARIABLE REGULATOR + 5V 5V PS TRACKING ACTUATOR 10 PS VREGX 19 11 DO2+ RESX 18 12 DO2- DO3+ 17 VCC REGULATOR RESET SLED MOTOR 13 DO1+ DO3- 16 14 DO1- PGND 15 FOCUS ACTUATOR 14 FAN8005D2 15 FAN8005D2 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 3/17/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation