UA1538-QM1-T

UNISONIC TECHNOLOGIES CO., UA1538 4-CH MOTOR DRIVER FOR PORTABLE CD PLAYERS DESCRIPTION The UTC UA1538 contains a 4ch H bridge driver and DC-DC converter control circuit on one chip, and was developed for use in portable CD players. LINEAR INTEGRATED CIRCUIT FEATURES *Built-in 4ch H bridge driver, and PWM control of load drive voltage is made possible by external components. *DC-DC converter control circuit on chip. *With reset output inversion output pin. *Empty detection level can be switched between rechargeable battery and dry battery. *Constant current charging; current value can be varied using external resistor. *Built-in power transistor for charging. *Built-in independent thermal shutdown circuit. Q FP-44-0.8 *Pb-free plating product number: UA1538L ORDERING INFORMATION Ordering Number Normal Lead Free Plating UA1538-QM1-T UA1538L-QM1-T Package QFP-44-0.8 Packing Tube www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., 1 QW-R109-023,B UA1538 PIN CONFIGURATION RCHG OUT1R OUT1F OUT2R OUT2F 33 32 31 30 29 POW GND 28 27 26 LINEAR INTEGRATED CIRCUIT OUT3F OUT3R OUT4F OUT4R BRAKE1 25 24 23 AMUTE 34 22 IN1 EMP 35 HVc c PSW CL K 21 MUTE2 36 20 IN2 37 19 MUTE34 38 18 IN4 START 39 UTC UA1538 17 IN3 OFF 40 16 Vref CHGVcc 41 15 VSYS2 OP + OPOUT SEL 42 14 PREGND 43 13 PWMFIL 44 12 VSYS1 1 BSEN 2 BATT 3 4 5 SW 6 EO 7 EI 8 SPRT 9 CT 10 N.C. 11 OP- RESET DEAD PIN DESCRIPTION PIN NO. PIN NAME INPUT/OUTPUT FUNCTION INTERMAL EQUIVALENT CIRCUIT 1 71kΩ 10.5kΩ 16.5kΩ 20 kΩ 1 BSEN Input Battery Voltage Monitor 14.85kΩ 2 BATT Input Battery Power Supply Input Power Supply VSYS1 90kΩ 3 3 RESET Output Reset Detect Output 13kΩ 4 DEAD Input DEAD Time Setting 4 49kΩ 30.8kΩ BATT 5 SW Output Transistor Drive For Voltage Multiplier 5 150Ω 6kΩ UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 QW-R109-023,B UA1538 PIN NO. PIN NAME INPUT/OUTPUT FUNCTION LINEAR INTEGRATED CIRCUIT INTERMAL EQUIVALENT CIRCUIT VSYS1 6 EO Output Error Amplifier Output 6 VSYS1 35kΩ 7 EI Input Error Amplifier Input 7 21.6kΩ VSYS1 8 SPRT Output Short Circuit Protection Setting 8 220kΩ VSYS1 BATT 2kΩ 9 9 CT Output Triangular-Wave Output 420kΩ 10kΩ 10 N.C. 14 11 11 14 OPOP+ Input Op Amp Negative Input Op Amp Positive Input 12 VSYS1 Input Control Circuit Power Supply Input Control Circuit Power Supply VSYS1 13 OPOUT Output Op Amp Output 13 15 VSYS2 Input Driver Pre-step Power Supply Pre-Drive Power Supply ×4 16 24kΩ 50kΩ 16 Vref Input Reference Voltage Input 200Ω 17 18 20 22 IN3 IN4 IN2 IN1 Input Ch3 Control Signal Input Ch4 Control Signal Input Ch2 Control Signal Input Ch1 Control Signal Input 11kΩ 17 18 20 22 20PIN=7.5kΩ 19 21 23 MUTE34 MUTE2 BRAKE1 Input Ch3 and 4 Mute Ch2 Mute Ch1 Brake 68kΩ 19 21 23 68kΩ UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 QW-R109-023,B UA1538 PIN NO. PIN NAME INPUT/OUTPUT FUNCTION Ch4 Negative Output OUT4R 24 Ch4 Positive Output OUT4F 25 Ch3 Negative Output OUT3R 26 Ch3 Positive Output OUT3F 27 Output Ch2 Positive Output OUT2F 29 Ch2 Negative Output OUT2R 30 Ch1 Positive Output OUT1F 31 Ch1 Negative Output OUT1R 32 Power Block Power Supply 28 POWGND Ground 36 HVcc Input H-Bridge Power Supply Input LINEAR INTEGRATED CIRCUIT INTERMAL EQUIVALENT CIRCUIT 36 24 26 30 32 25 27 29 31 28 950Ω 33 RCHG Input Charge Current Setting 33 BATT 34 AMUTE Output Reset Invert Output 34 95kΩ 35 35 EMP Output Empty Detect Output BATT 37 37 PSW Output PWM Transistor Drive 50Ω External Clock Synchronizing Input 38 VSYS1 2kΩ 38 CLK Input 50kΩ 100kΩ Voltage Multiplier DC-DC Converter Start 39 START Input 39 390kΩ BATT 200kΩ VSYS1 180kΩ 40 OFF Input Voltage Multiplier Converter OFF DC-DC 40 27kΩ 41 CHGVcc Input Charging Circuit Power Supply Input Charging Circuit Power Supply UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 QW-R109-023,B UA1538 PIN NO. PIN NAME INPUT/OUTPUT FUNCTION LINEAR INTEGRATED CIRCUIT INTERMAL EQUIVALENT CIRCUIT BATT 200kΩ 130kΩ 42 SEL Input/Output Empty Detect Level Switch 42 15kΩ 43 PREGND Pre Section Ground Power Supply Pre Section Power Supply Ground VSYS1 2kΩ 44 PWMFIL Input PWM Phase Compensation 44 2kΩ *The positive and negative outputs are the polarity with respect to the input BLOCK DIAGRAM RCHG 33 OUTIR 32 OUT1F 31 OUT2R 30 OUT2F POWGND OUT3F 29 28 27 OUT3R 26 OUT4F 25 OUT4R 24 BRAKE1 23 BRAKE1 AMUTE 34 MUTE2 BTL BTL BTL BTL V / I V / I V / I POWER OFF STARTER V / I TSD PSW 37 MAXIMUM DETECTION CLK 38 CLK ++ 22 IN1 EMP 35 21 MUTE2 HVcc 36 20 IN2 MUTE34 CONTROL CIRCUIT POWER SUPPLY 19 MUTE34 + 18 IN4 START 39 + 17 IN3 OFF 40 + 16 Vref OVER-VOLTAGE CHGVcc 41 TSD TRIANGLE WAVE 15 VSYS2 PRE-DRIVER POWER SUPPLY SEL 42 + - 14 OP+ ++POWER UNIT POWER SUPPLY +- PWMFIL 44 +- 1 BSEN 2 BATT 3 RESET 4 DEAD 5 SW 6 EO 7 EI 8 SPRT 9 CT 10 N.C. 11 OP- UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw - PREGND 43 + - + 13 OPOUT 12 VSYS1 5 QW-R109-023,B UA1538 ABSOLUTE MAXIMUM RATINGS (Ta=25℃) LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS Supply Voltage Vcc *1 13.5 Driver Output Current Io 500 Power Dissipation PD 625 Operating Temperature TOPR 0 ~ +70 Storage Temperature TSTG -40 ~ +150 *1: Vcc shows input voltage of VSYS1,VSYS2, HVcc, BATT,and CHGVcc. UNIT V mA mW °C °C RECOMMENDED OPERATING CONDITIONS PARAMETER Control Circuit Power Supply Voltage Pre-Driver Circuit Power Supply Voltage H-Bridge Power Supply Voltage Power Supply Voltage Charging circuit Power supply Voltage Operating Temperature SYMBOL VSYS1 VSYS2 HVcc BATT CHGVcc Ta MIN 2.7 2.7 1.5 3.0 -10 TYP 3.2 3.2 PWM 2.4 4.5 25 MAX 5.5 5.5 BATT 8.0 8.0 70 UNIT V V V V V °C ELECTRICAL CHARACTERISTICS (Ta=25℃, BATT=2.4V, VSYS1=VSYS2=3.2V, Vref=1.6V, CHGVcc=0V, fCLK=88.2kHz, unless otherwise specified.) PARAMETER Common Section BATT Stand-by Current BATT Supply Current (No load) VSYS1 Supply Current (No load) VSYS2 Supply Current (No load) CHGVcc Supply Current (No load) H-Bridge Driver Part Voltage Gain ch1,ch3.ch4 Voltage Gain ch2 Gain Error By Polarity Input pin resistance ch1,ch3,ch4 Input pin resistance ch2 Maximum Output Voltage Saturation Voltage (Lower) Saturation Voltage (Upper) Input Offset Voltage Output Offset Voltage ch1,ch3,ch4 Output Offset Voltage ch2 Dead Zone BRAKE1ON Threshold Voltage BRAKE1OFF Threshold Voltage MUTE2 ON Threshold Voltage H-Bridge Driver Part MUTE2 OFF Threshold Voltage MUTE34 ON Threshold Voltage MUTE34 OFF Threshold Voltage Vref ON Threshold Voltage SYMBOL TEST CONDITIONS BATT=9.0V, VSYS1=VSYS2=Vref=0V HVcc=0.45V, MUTE34=3.2V HVcc=0.45V, MUTE34=3.2V, EI=0V HVcc=0.45V, MUTE34=3.2V CHGVCC=4.5V, ROUT=OPEN 12 21.5 -2 9 6 1.9 MIN TYP 0 2.5 MAX 3 4.0 4.5 4.1 0.65 14 23.5 0 11 7.5 2.1 240 240 0 0 0 0 400 400 8 50 130 10 0.8 2.0 0.8 0.8 2.0 1.2 5.5 2.00 16 24.5 2 13 9 UNIT μA mA mA mA mA dB dB dB kΩ kΩ V mV mV mV mV mV mV V V V V V V V 6 QW-R109-023,B IST IBAT ISYS1 ISYS2 ICGVCC GVC134 GVC2 ⊿GVC RIN134 RIN2 VOUT VsatL VsatU VOI VOO134 VOO2 VDB VBRON VBROFF VM2ON VM2OFF VM34ON VM34OFF VrefON IN=1.7V and 1.8V IN=1.7V and 1.8V RL=8Ω,HVcc=BATT=4.0V IN=0-3.2V Io=-300mA, IN=0 and 3.2V Io=-300mA, IN=0 and 3.2V Vref=IN=1.6V Vref=IN=1.6V IN1=1.8V IN1=1.8V IN2=1.8V IN2=1.8V IN3=IN4=1.8V IN3=IN4=1.8V IN1=IN2=IN3=IN4=1.8V -8 -50 -130 -10 2.0 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw UA1538 PARAMETER Vref OFF Threshold Voltage BRAKE1 Brake Current PWM Power Supply Driving PSW Sink Current HVcc Level Shift Voltage HVcc Leak Current PWM Amp Transfer Gain DC-DC Converter Error Amp VSYS1 Threshold Voltage EO Pin Output Voltage "H" EO Pin Output Voltage "L" Short Circuit Protection SPRT Pin Voltage EO=H SPRT Pin Current1 OFF=L SPRT Pin Current2 SPRT Pin Current3 Over-Voltage SPRT Pin Impedance SPRT Pin Threshold Voltage Over-Voltage Protection Detect Transistor Driving SW Pin Output Voltage1 "H" SW Pin Output Voltage2 "H" SW Pin Output Voltage2 "L" SW Pin Oscillating Frequency1 SW Pin Oscillating Frequency2 SW Pin Oscillating Frequency3 SW Pin Minimum Pulse Width Pulse Duty Start Max. Pulse Duty At Self-Running Max. Pulse Duty At CLK Synchronization Interface OFF Pin Threshold Voltage OFF Pin Bias Current START Pin ON Threshold Voltage START Pin OFF Threshold Voltage START Pin Bias Current CLK Pin Threshold Voltage "H" CLK Pin Threshold Voltage "L" CLK Pin Bias Current www.unisonic.com.tw LINEAR INTEGRATED CIRCUIT SYMBOL TEST CONDITIONS VrefOFF IN1=IN2=IN3=IN4=1.8V Current difference between IBRAKE1 BRAKE pin "H" time and "L" time. IPSW VSHIF IHLK GPWM IN1=2.1V IN1=1.8V, HVcc-OUT1F HVcc=9.0V, VSYS1=VSYS2=BATT=0V IN1=1.8V, HVcc=1.2 ~ 1.4V MIN TYP MAX 0.8 10 UNIT V mA 4 7 10 0.35 13 0.45 0 17 0.55 5 1/40 mA V μA 1/kΩ 1/60 1/50 VS1TH VEOH VEOL VSPR ISPR1 ISPR2 ISPR3 RSPR VSPTH VHVPR EI=0.7V, Io=-100µA EI=1.3V, Io=100µA EI=1.3V EI=0.7V EI=1.3V, OFF=0V EI=1.3V, BATT=9.5V EI=0.7V, CT=0V BSEN Pin Voltage BATT=CT=1.5V, VSYS1=VSYS2=0V, Io=-2mA Starting Time CT=0V, Io=-10mA, EI=0.7V, SPRT=0V CT=2.0V, Io=10mA CT=470pF, VSYS1=VSYS2=0V Starting Time CT=470pF, CLK=0V CT=470pF CT=470pF, EO=0.5V→0.7V Sweep CT=470pF,VSYS1=VSYS2=0V CT=470pF, EI=0.7V, CLK=0V CT=470pF, EI=0.7V 3.05 1.4 3.20 1.6 3.35 0.3 V V V V μA μA μA kΩ V V 6 12 12 175 1.10 8.0 0 10 20 20 220 1.20 8.4 0.1 16 32 32 265 1.30 9.0 VSW1H VSW2H VSW2L fSW1 fSW2 fSW3 TSWmin DSW1 DSW2 DSW3 0.78 1.00 0.98 1.50 0.30 1.13 V V 0.45 95 82 V kHz kHz kHz μs % % % 65 60 80 70 88.2 0.01 40 70 65 50 80 75 0.60 60 90 85 VOFTH IOFF VSTATH1 VSTATH2 ISTART EI=1.3V OFF=0V VSYS1=VSYS2=0V, CT=2.0V VSYS1=VSYS2=0V, CT=2.0V START=0V BATT0.3 10 13 2.0 75 95 VSYS12.0 115 BATT1.0 V μA V V 20 16 30 19 0.8 10 μA V V μA 7 VCLKTHH VCLKTHL ICLK CLK=3.2V UNISONIC TECHNOLOGIES CO., LTD QW-R109-023,B UA1538 PARAMETER Dead Time DEAD Pin Impedance DEAD Pin Output Voltage Starter Circuit Starter Switching Voltage Starter Switching Hysteresis Width Discharge Release Empty Detection EMP Detection Voltage 1 EMP Detection Voltage 2 EMP Detection Hysteresis Voltage 1 EMP Detection Hysteresis Voltage 2 EMP Pin Output Voltage EMP Pin Output Leak Current BSEN Pin Input Resistance BSEN Pin Leak Current SEL Pin Detection Voltage SEL Pin Detection Current Reset Circuit VSYS1 RESET Threshold Voltage Ratio RESET Detection Hysteresis Width RESET Pin Output Voltage RESET Pin PULL UP Resistance AMUTE Pin Output Voltage 1 AMUTE Pin Output Voltage 2 AMUTE Pin PULL DOWN Resistance Op Amp Input Bias Current Input Offset Voltage High Level Output Voltage Low level Output Voltage Output Drive Current (Source) Output Drive Current (Sink) Open Loop Voltage Gain Slew Rate Battery Charging Circuit RCHG Pin Bias Voltage RCHG Pin Output Resistance SEL Pin Leak Current 1 SEL Pin Leak Current 2 SEL Pin Saturation Voltage SYMBOL RDEAD VDEAD LINEAR INTEGRATED CIRCUIT TEST CONDITIONS MIN 52 0.78 VSYS1=VSYS2=0→3.2V, START=0V START=0V TYP 65 0.88 MAX 78 0.98 UNIT kΩ V VSTNM VSNHS VDIS VEMPT1 VEMPT2 VEMHS1 VEMHS2 VEMP IEMPL RBSEN IBSENL VSELTH ISELT 2.3 130 1.63 2.1 1.7 25 25 2.5 200 1.83 2.2 1.8 50 50 2.7 300 2.03 2.3 1.9 100 100 0.5 1.0 27 1.0 V mV V V V mV mV V μA kΩ V V μA VSEL=0V ISEL=- 2µA VSEL=0V ISEL=- 2µA Io=1mA, BSEN=1V BSEN=2.4V VSEL=0V VSYS1=VSYS2=0V BSEN=4.5V VSELTH=BATT-SEL BSEN=2.0V 17 23 1.5 -2 HSRT VRSTHS VRST RRST VAMT1 VAMT2 RAMT Comparison with error amplifier threshold voltage Io=1mA, VSYS1=VSYS2=2.8V Io=-1mA, VSYS1=VSYS2=2.8V Io=-1mA, START=0V, VSYS1=VSYS2=0V 85 25 72 BATT -0.4 BATT -0.4 77 90 50 90 95 100 0.5 108 BATT BATT % mV V kΩ V V kΩ 95 113 IBIAS VOIOP VOHOP VOLOP ISOU ISIN GVO SR VRCHG RRCHG ISELLK1 ISELLK2 VSELCG OP+=1.6V RL=OPEN RL=OPEN 50ΩGND 50ΩVSYS1 VIN=-75dBV, f=1kHz -5.5 2.8 0 300 5.5 0.2 -3.0 0.4 -6.5 0.7 70 0.5 0.81 0.95 nA mV V V mA mA dB V/μs V kΩ μA μA V CHGVcc=4.5V, RCHG=1.8kΩ. CHGVcc=4.5V, RCHG=0.5 and 0.6V CHGVcc=4.5V, RCHG=OPEN, BATT=4.5V CHGVcc=0.6V, RCHG=1.8kΩ, BATT=4.5V CHGVcc=4.5V, Io=300mA, RCHG=0Ω 0.71 0.75 0.91 1.20 1.0 1.0 0.45 1.00 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 QW-R109-023,B UA1538 MEASURING CIRCUIT V 1.8k A a b SW20 A V V 51k LINEAR INTEGRATED CIRCUIT a V b SW19 b SW1 8 a a SW1 7 B b V a SW21 b V V + 47μ 33μ 47 OUT2R OUT3R RCHG OUTIR POWGND OUT4R OUT1F OUT2F OUT3F OUT4F b a A V a SW24 A A a SW26 a A 40 OFF A a 42 SEL b V SW27 A b SW25 Va A 10p b SW23 34 BRAKE1 AMUTE IN1 22 b 35 EMP MUTE2 21 a V 36 HVcc IN2 20 37 PSW MUTE34 19 b a V 38 CLK IN4 18 b a 39 START UTC UA1538 IN3 17 b Vref 16 41 CHGVcc VSYS2 15 A 1k OP+ 14 V SW12 a + 43 PREGND OPOUT 13 10μ RESET 44 PWMFIL BSEN VSYS1 12 DEAD SPRT N.C EO OPSW Ct EI b SW28 100 k 2200p BATT a b V A SW11 50 1 2 3 4 5 SW5 a SW4 V b 6 7 SW6 b a 8 9 10 11 SW10 d c 20k A 10k SW9 SW8 b b 470p V aV ab 100k + a A V frequency SW1 a + A SW2 a A V b SW3 b a a V SW7 b A a 1M 470μ 100μ V 10k V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw A SW13 V A SW14 A SW15 A SW16 V A c a A SW22 33 32 31 30 29 28 27 26 25 24 23 R F a 9 QW-R109-023,B UA1538 SWITCHING POSITION TABLE ITEM BATT Stand-by Current BATT Supply Current (No load) VSYS1 Supply Current (No load) VSYS2 Supply Current (No load) CHGVcc Supply Current (No load) VSYS1 Threshold Voltage EO Pin Output Voltage “H” EO Pin Output Voltage ”L” SPRT Pin Voltage SPRT Pin Current1 EO=”H” SPRT Pin Current2 OFF=”L” SPRT Pin Current3 Over-Voltage SPRT Pin Impedance SPRT Pin Threshold Voltage Over-Voltage Protection Detect SW Pin Output Voltage1”H” SW Pin Output Voltage2”H” SW Pin Output Voltage2”L” SW Pin Oscillating Frequency 1 SW Pin Oscillating Frequency 2 SW Pin Oscillating Frequency 3 SW Pin Minimum Pulse Width Pulse Duty Start Max Pulse Duty At Self-Running Max Pulse Duty At CLK Synchronization -: Turn off switch ITEM DEAD Pin Impedance DEAD Pin Output Voltage OFF Pin Threshold Voltage OFF Pin Bias Current START Pin ON Threshold Voltage START Pin OFF Threshold Voltage START Pin Bias Current CLK Pin Threshold Voltage “H” CLK Pin Threshold Voltage “L” CLK Pin Bias Current Starter Switching Voltage Starter Switching Hysteresis Width Discharge Release Voltage VSYS1 Pin RESET Threshold Voltage Ratio RESET Detection Hysteresis Width RESET Pin Output Voltage RESET Pin PULL UP Resistance AMUTE Pin Output Voltage 1 AMUTE Pin Output Voltage 2 AMUTE Pin PULL DOWN Resistance -: Turn off switch 1 a a 4 a a a b b b b b b b 5 a a a b 6 a a a a a a a a a a LINEAR INTEGRATED CIRCUIT SW NO. 7 8 a b b b b a a a a b a a b b b b b b b 22 a a a - 24 b a b b a 25 a a a a a a - 26 a - 2 b b b a - 3 b a - 4 a a a a a a - 6 a - SW NO. 7 8 a a a b b a - 20 b b a 24 b b a - 25 a a a a a -a - 26 a a - UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 10 QW-R109-023,B UA1538 ITEM EMP Detection Voltage 1 EMP Detection Voltage 2 EMP Detection Hysteresis Voltage 1 EMP Detection Hysteresis Voltage 2 EMP Pin Output Voltage EMP Pin Output Leak Current BSEN Pin Input Resistance BSEN Pin Leak Current SEL Pin Detection Voltage SEL Pin Detection Current Input Bias Current Input Offset Voltage “H” Level Output Voltage “L” Level Output Voltage Output Drive Current (Source) Output Drive Current (Sink) Open Loop Voltage Gain Slew Rate -: Turn off switch ITEM Ch1R Ch2R Ch3R Ch4R Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1R Ch2R Ch3R Ch4R Ch1F Ch1R Ch2F Ch2R Ch3F Ch3R Ch4F Ch4R Ch1F Ch1R Ch2F Ch2R Ch3F Ch3R Ch4F Ch4R 1 a a a a a a a a a a 9 a b a 10 a d c c d d b d LINEAR INTEGRATED CIRCUIT SW NO. 11 b a - 12 a a 21 a a a a b c a a - 27 a b a b a a b - Voltage Gain Gain Error By Polarity Input Pin resistance Maximum Output Voltage Saturation Voltage (Lower) Saturation Voltage (Upper) 13 b b b b b b b b - 14 b b b b b b b b 15 b b b b b b b b - SW NO. 16 b b b b b b b b - 17 b b b b b b b b b b b b b b b b a a a a a a a a - 18 b b b b b b b b b b b b b b b b a a a a a a a 22 a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a 11 QW-R109-023,B UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw UA1538 Input Offset Voltage Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 a b b a b b a b b - LINEAR INTEGRATED CIRCUIT a b b b b b b b b b b b b b b b b b b a a a a a a a a a a a a Output Offset Voltage Dead Zone -: Turn off switch ITEM BRAKE1 ON Voltage BRAKE1 OFF Voltage MUTE2 ON Voltage MUTE2 OFF Voltage MUTE34 ON Voltage MUTE34 OFF Voltage Vref ON Voltage Ch1 Ch1 Ch2 Ch2 Ch3 Ch4 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 SW NO. 17 b b b b b b b b b b b b b b b b b b b b SW NO. 19 a b a b 27 a a b Vref OFF Voltage BREAK1 Brake Current PWM Sink Current HVcc Level Shift Voltage HVcc Leak Current PWM Amp Transfer Gain ITEM 13 b b b b - 14 b b b b - 15 b b b b - 16 b b b b b b b b 18 b b b b b b b b b b b b b b b b b b b b 22 a a a a a a a a a a a a a a a a a a b a a 23 b a - 28 a b - CHGSET Pin Bias Voltage CHGSET Pin Output Resistance SEL Pin Leak Current 1 SEL Pin Leak Current 2 SEL Pin Saturation Voltage -: Turn off switch UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 12 QW-R109-023,B UA1538 SWITCHING POSITION TABLE LINEAR INTEGRATED CIRCUIT Input voltage:VIN (mV) VO4 VO3 VIN1 VIN2 XC' XC VO2 Dead Zone Output Offset Voltage VO1 VIN3 VIN4 Output Voltage:Vo (mV) * Voltage Gain Gvc(+)=20 log Gvc(-)=20 log VO1-VO2 VIN1-VIN2 VO3-VO4 VIN3-VIN4 * Gain Error By Polarity Gvc=Gvc (+)-Gvc (-) * Dead Zone VIN2‧VO1 - VIN1‧VO2 XC-XC'= VO1-VO2 VIN3‧VO4 - VIN4‧VO3 VO3-VO4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 13 QW-R109-023,B UA1538 APPLICATION CIRCUIT M TRAVERSE LINEAR INTEGRATED CIRCUIT M SPINDLE FOCUS TRACKING OUT2R OUT1F 33 32 31 30 OUT2F OUTIR 29 28 27 26 25 24 BRAKE1 OUT3R RCHG OUT4R 1.8k POWGND OUT3F OUT4F 23 BRAKE1 AMUTE 34 MUTE2 BTL BTL BTL BTL V / I V / I V / I POWER OFF STARTER V / I TSD MAXIMUM DETECTION CLK ++ IN1 22 MUTE2 21 IN2 20 MUTE34 CONTROL CIRCUIT POWER SUPPLY EMP 35 HVcc 33μ 36 47μ + 0.1μ PSW 47 37 CLK 38 START 39 0.1μ MUTE34 19 IN4 18 IN3 17 Vref + + OFF 100k 40 CHGVcc 41 SEL 42 PREGND 43 PWMFIL 44 100k + - + 16 VSYS2 OVER-VOLTAGE TSD TRIANGLE WAVE 15 PRE-DRIVER POWER SUPPLY OP+ 14 OPOUT 13 - ++- +- EI - 2200p 10p + DEAD BSEN RESET SPRT N.C. EO 1 BATT 2 3 4 5 6 7 8 9 10 OP- SW CT 11 FILTER 0.1 μ VIN 47 μ + DC-DC Converter application 8.2k VOUT + 0.022μ 0.1μ 470p 100μ * We shall not be liable for any trouble or damege caused by using this circuit. *In the evert a problem which may affect industrial property or any other rights of us or a third party is encountered during the use of information described in these circuit,Mitsumi Electric Co.,Ltd.shall not be liable for any such problem,nor grant a license therefor. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw + +- VSYS1 12 14 QW-R109-023,B UA1538 CIRCUIT OPERATION 1 H-bridge driver block LINEAR INTEGRATED CIRCUIT (1) Gain setting ·The driver input resistance (ch 1,3 and 4) are 11kΩ typ. ,ch2 is 7.5kΩ typ. . Set the gain according to the following formula. ch1 55k ch2 GV=20 log 11k+R ch3 R:Externally-connected input (db) 110k ch2 GV=20 log 7.5k+R (db) ·The driver output stage power supply is HVcc (36PIN), and the bridge circuit power supply is VSYS2 (15PIN). Connect a bypass capacitor between these two power supplies (approximately 0.1μF). (2) Mute function ·Of the four drivers,ch1 has a brake function, and the other channels have a mute function. ·When BRAKE1(23PIN)is set to high level, both ch1 outputs go low level, and the circuit enters brake mode. ·When MUTE2(21PIN)is set to high level, the ch2 output is muted. ·When MUTE34(19PIN)is set to high level, the ch3 and 4 outputs are muted. (3) Vref drop mute ·When the voltage applied to Vref (16PIN)is 1.0V or less typ. , the driver outputs are set to high impedance. (4) Thermal shutdown ·When the chip temperature reaches 150℃ typ. the output current is cut. The chip starts operating again at about 120℃ typ. . 2 PWM power supply drive block ·This detects the maximun output level from among the four channels, and supplies the load drive power supply (36PIN)for the PWM. The external components are a PNP transistor, coil, Schottky diode, and capacitor. 33μH BATT 10pF 100kΩ 2200pF 44 PWMFIL 37 PSW 36 HVcc 47kΩ SBD 47μF + 0.1μF 3 DC-DC converter block (1) Output voltage ·3.2V typ. voltage multiplier circuit can be constructed using external components. This voltage can be varied with the addition of an external resistor. The setting method is as follows. R1· R3 R2· R4 + R1 + R3 R2 + R4 R2· R4 R2 + R4 VSYS1=1.2× (V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 15 QW-R109-023,B UA1538 VSYS1 12 R1 7 R2 EI R4 1.2V R3 + LINEAR INTEGRATED CIRCUIT R1=external resistor R2=external resistor R3=35kΩ R4=21kΩ (2) Short protect function ·When the error amplifier output(6PIN)has switched to the high-level state, SPRT (8PIN)is charged, and when the voltage reaches 1.2V typ. , the SW(5PIN)switching stops. The time until switching stops is set by the capacitor connected to SPRT(8PIN)according to the following formula. t=CSPRT × VTH (sec) (VTH=1.2V,ISPRT=10μA) ISPRT (3) Soft start function ·The soft start function operates when a capacitor is connected between DEAD(4PIN)and GND. Also, the maximum duty can be varied by connecting a resistor to 4PIN. t=CDEAD × R(sec) ( R=65kΩ) (4) Power off function ·When low-level is applied to OFF(40PIN), SPRT(8PIN)is charged, and when the voltage reaches 1.2V typ. , the SW(5PIN)switching stops. The time until switching stops is set by the capacitor connected to SPRT (8PIN)according to the following formula. t=CSPRT× VTH (sec)(VTH=1.2V,IOFF=20μA) IOFF (5) Over voltage protection circuit ·When the voltage applied to BSEN(1PIN)reaches 8.4V typ. , SPRT (8PIN) is charged, and when the voltage reaches 1.2V typ. , theSW (5PIN)switching stops. The time until switching stops is set by the capacitor connected to SPRT(8PIN)according to the following formula. t=CSPRT× VTH (sec)(VTH=1.2V,IHV=20μA) IHV 4 Empty detector block (1) Output voltage ·When the voltage applied to the BSEN(1PIN)falls below the detector voltage, EMP(35PIN)goes from high level to low level(open-collector output). The detector voltage has 50mV typ. of hysteresis to prevent output chattering. Use SEL (42PIN) to switch the detection voltage as shown below. SEL Detect Voltage Return Voltage L 2.20V typ. 2.25V typ. High-Z 1.80V typ. 1.85V typ. 5 Reset circuit block ·At about 90% typ. of the DC-DC converter output voltage, RESET(3PIN)goes from low level to high level, and AMUTE(34PIN)goes from high level to low level. The reset voltage has 50mV typ. of hysteresis to prevent output chattering. 6 Charging circuit block ·The power supply for the charging circuit block is CHGVCC(41PIN), and is independent from the other circuits. The resistance between RCHG (33PIN) and GND sets the charging current. This current is drawn from SEL (42PIN). ·A thermal shutdown circuit is provided, and when the chip temperature reaches 150℃ typ. the charging current is cut. The chip starts operating again at about 120℃ typ. . UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 16 QW-R109-023,B UA1538 TYPICAL CHARACTERISTIC Input Load Fluctuation 3 2 LINEAR INTEGRATED CIRCUIT RL=∞ Output Voltage:Vo (V) 1 4Ω 0 -1 -2 -3 -0.8 8Ω 20Ω 8Ω 4Ω 20Ω -0.6 -0.4 -0.2 0 Input Voltage:Vin (V) 0.2 ﹢ *Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V 0.4 0.6 0.8 Input Load Fluctuation (ch2) 3 Output Voltage:Vo (V) 2 1 RL=﹢ 4Ω 0 -1 -2 8Ω 20Ω 20Ω ﹢ 8Ω 4Ω *Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V -0.2 0 Input Voltage:Vin (V) 0.2 0.4 0.6 0.8 -3 -0.8 -0.6 -0.4 Dead Zone 0.006 Input voltage: VIN (mV) 0.004 0.002 0 -0.002 -0.004 *Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V 8Ω 20Ω 4Ω 20Ω 8Ω 4Ω -0.006 -30 -20 -10 0 Output Voltage:Vo(mV) 10 20 30 Error Amp Output Voltage 2.0 1.8 Ta=normal temperature 1.6 BATT=2.4V 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 1.0 0.0 0.5 Dead Output voltage E:VDAED (V) Eo Output Voltage:VEO(V) EOPIN DAED PIN 1.5 2.0 2.5 3.0 3.5 4.0 Control Circuit Power Supply voltage:VSYS1(V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 17 QW-R109-023,B UA1538 Resete Pin Voltage 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 Reset Output Voltage:VRST (V) LINEAR INTEGRATED CIRCUIT Ta=normal temperature BATT=2.4V 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Control Circuit Power Supply voltage:VSYS1(V) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 18 QW-R109-023,B