UTC MM1538 LINEAR INTEGRATED CIRCUIT 4-CH MOTOR DRIVER FOR PORTABLE CD PLAYERS DESCRIPTION The UTC MM1538 contains a 4ch H bridge driver and DC-DC converter control circuit on one chip, and was developed for use in portable CD players. 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. QFP-44-0.8 APPLICATIONS *Portable CD radio cassette recorders PIN CONFIGURATION RCHG OUT1R OUT1F OUT2R OUT2F 33 32 31 30 29 POW GND 28 OUT3F OUT3R OUT4F OUT4R BRAKE1 27 26 25 24 23 AMUTE 34 22 EMP 35 21 MUTE2 HVcc 36 20 IN2 PSW 37 19 MUTE34 CLK 38 18 IN4 17 IN3 UTC MM1538 START 39 OFF 40 16 Vref CHGVcc 41 15 VSYS2 SEL 42 UTC IN1 14 OP+ PREGND 43 13 OPOUT PWMFIL 44 12 1 2 BSEN BATT 3 4 RESET DEAD 5 6 7 8 9 10 11 SW EO EI SPRT CT N.C. OP- VSYS1 UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT PIN DESCRIPTION PIN PIN NAME INPUT/OUTPUT NO. 1 BSEN Input FUNCTION Battery Voltage Monitor INTERMAL EQUIVALENT CIRCUIT 1 16.5kΩ 71kΩ 20 kΩ 10.5kΩ 14.85kΩ 2 3 BATT RESET Input Output Battery Power Supply Input Reset Detect Output Power Supply VSYS1 90kΩ 3 4 DEAD Input DEAD Time Setting 13kΩ 4 49kΩ 30.8kΩ 5 SW Output Transistor Drive For Voltage Multiplier BATT 5 6 EO Output 150Ω 6kΩ Error Amplifier Output VSYS1 6 7 EI Input Error Amplifier Input VSYS1 35kΩ 7 21.6kΩ UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT PIN PIN NAME INPUT/OUTPUT NO. 8 SPRT Output FUNCTION INTERMAL EQUIVALENT CIRCUIT Short Circuit Protection Setting VSYS1 8 220kΩ 9 CT Output Triangular-Wave Output BATT VSYS1 2kΩ 9 420kΩ 10kΩ 10 11 14 N.C. OPOP+ Input Op Amp Negative Input Op Amp Positive Input 12 VSYS1 Input 13 OPOUT Output Control Circuit Power Supply Input Op Amp Output 14 11 Control Circuit Power Supply VSYS1 13 15 VSYS2 Input 16 Vref Input Driver Pre-step Power Supply Reference Voltage Input Pre-Drive Power Supply ×4 16 24kΩ 200Ω 50kΩ 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 17 11kΩ 18 20 20PIN=7.5kΩ 22 UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT PIN PIN NAME INPUT/OUTPUT NO. 19 21 23 MUTE34 MUTE2 BRAKE1 24 25 26 27 29 30 31 32 28 OUT4R OUT4F OUT3R OUT3F OUT2F OUT2R OUT1F OUT1R POWGND Input FUNCTION Ch3 and 4 Mute Ch2 Mute Ch1 Brake INTERMAL EQUIVALENT CIRCUIT 68kΩ 19 21 68kΩ 23 Output 36 HVcc Input 33 RCHG Input Ch4 Negative Output Ch4 Positive Output Ch3 Negative Output Ch3 Positive Output Ch2 Positive Output Ch2 Negative Output Ch1 Positive Output Ch1 Negative Output Power Block Power Supply Ground H-Bridge Power Supply Input 36 24 25 26 27 30 29 32 31 28 Charge Current Setting 950Ω 33 34 AMUTE Output Reset Invert Output BATT 34 95kΩ 35 EMP Output Empty Detect Output 37 PSW Output PWM Transistor Drive 35 BATT 37 50Ω 38 CLK Input External Clock Synchronizing Input VSYS1 38 2kΩ 50kΩ 100kΩ UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT PIN PIN NAME INPUT/OUTPUT NO. 39 START Input FUNCTION INTERMAL EQUIVALENT CIRCUIT Voltage Multiplier DC-DC Converter Start 39 40 OFF Input BATT 390kΩ Voltage Multiplier DC-DC Converter OFF 200kΩ VSYS1 180kΩ 40 41 CHGVcc Input 42 SEL Input/Output Charging Circuit Power Supply Input Empty Detect Level Switch 27kΩ Charging Circuit Power Supply BATT 200kΩ 130kΩ 15kΩ 42 43 PREGND 44 PWMFIL Input Pre Section Power Supply Ground PWM Phase Compensation Pre Section Power Supply Ground VSYS1 2kΩ 44 2kΩ *The positive and negative outputs are the polarity with respect to the input UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM RCHG OUTIR OUT1F OUT2R 33 32 31 30 OUT2F POWGND OUT3F 29 28 27 OUT3R OUT4F OUT4R BRAKE1 26 25 24 23 BRAKE1 22 IN1 MUTE2 AMUTE 34 EMP 35 BTL BTL BTL TSD PSW 37 MAXIMUM DETECTION CLK 38 CLK + - POWER OFF STARTER START 39 OFF 40 20 IN2 V / I + V / I + V / I + V / I + MUTE34 BTL HVcc 36 21 MUTE2 19 MUTE34 18 IN4 17 IN3 16 Vref OVER-VOLTAGE TSD TRIANGLE WAVE CONTROL CIRCUIT POWER SUPPLY PRE-DRIVER POWER SUPPLY PREGND - + + - 43 UTC 14 OP+ 13 OPOUT + - + + - 12 VSYS1 POWER UNIT POWER SUPPLY PWMFIL 44 15 VSYS2 - SEL 42 + CHGVcc 41 + - 1 2 3 4 5 6 7 8 9 10 11 BSEN BATT RESET DEAD SW EO EI SPRT CT N.C. OP- UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25°C ) PARAMETER SYMBOL RATINGS UNIT Supply Voltage Vcc *1 13.5 Driver Output Current Io 500 Power Dissipation PD 625 Operating Temperature TOPR -30~+85 Storage Temperature TSTG -55~+150 *1: Vcc shows input voltage of VSYS1,VSYS2, HVcc, BATT,and CHGVcc. 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 MIN TYP MAX UNIT VSYS1 VSYS2 HVcc BATT CHGVcc Ta 2.7 2.7 3.2 3.2 PWM 2.4 4.5 25 5.5 5.5 BATT 8.0 8.0 70 V V V V V °C 1.5 3.0 -10 ELECTRICAL CHARACTERISTICS (Ta=25°C, 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 Vref OFF Threshold Voltage UTC SYMBOL IST IBAT ISYS1 ISYS2 ICGVCC GVC134 GVC2 ⊿GVC RIN134 RIN2 VOUT VsatL VsatU VOI VOO134 VOO2 VDB VBRON VBROFF VM2ON VM2OFF VM34ON VM34OFF VrefON VrefOFF TEST CONDITIONS MIN 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 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 IN1=IN2=IN3=IN4=1.8V 12 21.5 -2 9 6 1.9 -8 -50 -130 -10 2.0 TYP MAX UNIT 0 3 μA 2.5 4.7 4.0 6.4 mA mA 4.1 0.65 5.5 2.00 mA mA 14 23.5 0 11 7.5 2.1 16 24.5 2 13 9 dB dB dB kΩ kΩ V 240 240 0 0 0 0 400 400 8 50 130 10 mV mV mV mV mV mV V V V 0.8 2.0 0.8 0.8 2.0 1.2 0.8 UNISONIC TECHNOLOGIES CO., LTD. V V V V V 7 QW-R109-009,A UTC MM1538 PARAMETER 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" LINEAR INTEGRATED CIRCUIT SYMBOL TEST CONDITIONS MIN TYP MAX UNIT IBRAKE1 Current difference between BRAKE pin "H" time and "L" time. 4 7 10 mA 10 0.35 13 0.45 0 17 0.55 5 mA V μA 1/60 1/50 1/40 1/kΩ 3.05 1.4 3.20 1.6 3.35 0.3 V V V IPSW VSHIF GPWM IN1=2.1V IN1=1.8V, HVcc-OUT1F HVcc=9.0V, VSYS1=VSYS2=BATT=0V IN1=1.8V, HVcc=1.2 ~ 1.4V VS1TH VEOH VEOL EI=0.7V, Io=-100µA EI=1.3V, Io=100µA IHLK VSPR ISPR1 ISPR2 ISPR3 RSPR VSPTH VHVPR VSW1H SW Pin Output Voltage2 "H" VSW2H SW Pin Output Voltage2 "L" SW Pin Oscillating Frequency1 VSW2L fSW1 SW Pin Oscillating Frequency2 SW Pin Oscillating Frequency3 SW Pin Minimum Pulse Width fSW2 fSW3 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 Dead Time DEAD Pin Impedance DEAD Pin Output Voltage Starter Circuit UTC TSWmin DSW1 DSW2 DSW3 VOFTH IOFF VSTATH1 VSTATH2 ISTART VCLKTHH VCLKTHL ICLK RDEAD VDEAD 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 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 V μA μA μA kΩ V V 0.78 0.98 1.13 V 1.00 1.50 65 0.30 80 0.45 95 V kHz 70 88.2 82 0.60 kHz kHz μs 60 90 85 % % % 60 0.01 40 70 65 50 80 75 EI=1.3V OFF=0V VSYS1=VSYS2=0V, CT=2.0V 75 VSYS1=VSYS2=0V, CT=2.0V BATT0.3 10 13 2.0 START=0V 95 20 16 CLK=3.2V 52 0.78 65 0.88 V VSYS1- V 2.0 115 μA BATTV 1.0 V 30 19 μA 0.8 10 V V μA 78 0.98 kΩ V UNISONIC TECHNOLOGIES CO., LTD. 8 QW-R109-009,A UTC MM1538 PARAMETER 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 UTC LINEAR INTEGRATED CIRCUIT SYMBOL VSTNM VSNHS VDIS VEMPT1 VEMPT2 VEMHS1 VEMHS2 VEMP IEMPL RBSEN IBSENL VSELTH ISELT HSRT VRSTHS VRST RRST VAMT1 VAMT2 TEST CONDITIONS MIN TYP MAX UNIT 2.3 2.5 2.7 V 130 1.63 200 1.83 300 2.03 mV V VSEL=0V ISEL=- 2µA VSEL=0V 2.1 1.7 25 2.2 1.8 50 2.3 1.9 100 V V mV ISEL=- 2µA 25 50 100 mV 0.5 1.0 27 1.0 V μA kΩ V V μA VSYS1=VSYS2=0→3.2V, START=0V START=0V Io=1mA, BSEN=1V BSEN=2.4V VSEL=0V VSYS1=VSYS2=0V, BSEN=4.5V VSELTH=BATT-SEL, BSEN=2.0V Comparison with error amplifier threshold voltage VRCHG RRCHG ISELLK1 ISELLK2 VSELCG 23 1.5 -2 85 90 95 % 25 50 72 BATT -0.4 BATT -0.4 77 90 100 0.5 108 BATT mV V kΩ V BATT V 95 113 kΩ 0 300 5.5 0.2 -3.0 nA mV V V mA mA dB V/μs 0.91 1.20 V kΩ 1.0 μA 1.0 μA 1.00 V Io=1mA, VSYS1=VSYS2=2.8V Io=-1mA, VSYS1=VSYS2=2.8V Io=-1mA, START=0V, VSYS1=VSYS2=0V RAMT IBIAS VOIOP VOHOP VOLOP ISOU ISIN GVO SR 17 OP+=1.6V RL=OPEN RL=OPEN 50ΩGND 50ΩVSYS1 VIN=-75dBV, f=1kHz 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 -5.5 2.8 0.4 0.71 0.75 -6.5 0.7 70 0.5 0.81 0.95 0.45 UNISONIC TECHNOLOGIES CO., LTD. 9 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT MEASURING CIRCUIT V a 1.8k V b SW20 A A a V b SW19 B b b a a SW18 SW17 V 51k V V V a SW21 b 27 26 25 24 23 OUT4R BRAKE1 34 AMUTE b F a V 28 IN1 22 SW16 A 29 OUT4F A 30 OUT3R SW23 31 OUT3F a 32 POWGND b 47 33 OUT2F SW22 OUT2R R c a OUT1F A 33μ OUTIR 47μ RCHG A + b 35 EMP MUTE2 21 36 HVcc IN2 20 37 PSW MUTE34 19 38 CLK IN4 18 IN3 17 Vref 16 VSYS2 15 OP+ 14 OPOUT 13 V a A b a V V SW15 SW14 A SW24 A b a SW25 A UTC MM1538 39 START V b SW13 a 40 OFF b A 41 CHGVcc 1k 42 SEL SW27 V V 43 PREGND 100k 1 2 4 5 + UTC a A b V SW3 a A V V 11 SW10 b SW7 b V A a d a 10μ SW11 V 50 c 20k a b SW9 SW8 10k b 10k a a a OP- N.C Ct SPRT EI b b b a 10 V SW4 SW2 9 8 7 SW6 a A A 6 SW5 10p SW1 a EO SW DEAD 3 2200p frequency A VSYS1 12 RESET b SW28 BATT BSEN 44 PWMFIL V a SW12 + A A a b 100μ A a 100k a V 1M b 470p + 470μ A SW26 A a V V UNISONIC TECHNOLOGIES CO., LTD. 10 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT 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 UTC 1 4 5 6 SW NO. 7 8 a a - a a a b b b b b b b a a a b - a a a a a a a a a a a b b b b a a b - a a a a b b b b b b b 22 24 25 26 a a a - b a b b a a a a a a a - a - UNISONIC TECHNOLOGIES CO., LTD. 11 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT 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 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 UTC 2 3 4 6 SW NO. 7 8 20 24 25 26 - b a - a a a a a a - a - a a a a b b - - b b a - a a a a a - a a - b - - - - - - - - - b b a - - - - - - b b a - -a - - 1 9 10 SW NO. 11 12 21 27 a a a a a a a a a a - a b a - a d c c d d b d b a - a a a a a a b c a a - a b a b a a b - UNISONIC TECHNOLOGIES CO., LTD. 12 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT ITEM Voltage Gain Gain Error By Polarity Input Pin resistance Maximum Output Voltage Saturation Voltage (Lower) Saturation Voltage (Upper) Input Offset Voltage Output Offset Voltage Dead Zone 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 Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 13 14 15 SW NO. 16 17 18 22 b b b b b b b b a b b - b b b b b b b b a b b b b b b b b b b a b b - b b b b b b b b 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 b b b b b b 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 b b b b b b b b 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 a a a a a a a a a a a a -: Turn off switch UTC UNISONIC TECHNOLOGIES CO., LTD. 13 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT ITEM BRAKE1 ON Voltage BRAKE1 OFF Voltage MUTE2 ON Voltage MUTE2 OFF Voltage MUTE34 ON Voltage MUTE34 OFF Voltage Vref ON Voltage Vref OFF Voltage BREAK1 Brake Current PWM Sink Current HVcc Level Shift Voltage HVcc Leak Current PWM Amp Transfer Gain ITEM 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 UTC Ch1 Ch1 Ch2 Ch2 Ch3 Ch4 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 13 14 15 16 SW NO. 17 18 22 23 28 b b b b - b b b b - b b b b - b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b 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 a a a a a a b a a b a - a b - SW NO. 19 27 a b a b a a b UNISONIC TECHNOLOGIES CO., LTD. 14 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT Input voltage:VIN (mV) SWITCHING POSITION TABLE VO4 VIN1 VIN2 XC' VO3 XC VO2 Dead Zone VIN3 VIN4 VO1 Output Offset Voltage 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 UTC - VIN3•VO4 - VIN4•VO3 VO3-VO4 UNISONIC TECHNOLOGIES CO., LTD. 15 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT 27 26 25 24 BRAKE1 28 OUT4R 29 TRACKING OUT4F 30 OUT3R 31 FOCUS OUT3F OUT2R 32 OUT1F 33 OUTIR RCHG 1.8k POWGND M SPINDLE OUT2F M TRAVERSE 23 BRAKE1 AMUTE IN1 34 22 MUTE2 EMP 35 HVcc 33μ BTL BTL BTL V / I TSD 37 MAXIMUM DETECTION CLK 38 CLK START + - 39 POWER OFF STARTER 0.1μ OFF 40 CHGVcc 41 + V / I + V / I + V / I + 18 IN3 17 Vref 16 OVER-VOLTAGE TSD 15 TRIANGLE WAVE PRE-DRIVER POWER SUPPLY PREGND + - + - 43 PWMFIL + - + + - OP+ CONTROL CIRCUIT POWER SUPPLY 42 14 VIN 47 μ + DC-DC Converter application 8.2k VOUT + 0.022μ 0.1μ 9 470p 10 OP- 8 N.C. - 7 CT 6 EI 5 SPRT 0.1 μ EO 4 SW 3 DEAD RESET BATT + 2 13 12 10p 1 OPOUT VSYS1 44 BSEN 2200p 19 IN4 VSYS2 SEL 100k MUTE34 - 47 MUTE34 PSW 100k 20 0.1μ + 47μ 21 IN2 BTL 36 + MUTE2 11 FILTER 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. UTC UNISONIC TECHNOLOGIES CO., LTD. 16 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT CIRCUIT OPERATION 1 H-bridge driver block (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 10pF BATT + 100kΩ SBD 47kΩ 0.1μF 47μF 2200pF UTC 44 37 36 PWMFIL PSW HVcc UNISONIC TECHNOLOGIES CO., LTD. 17 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT 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 VSYS1=1.2× R2· R4 R2 + R4 (V) VSYS1 12 R3 R1 + 7 R2 EI R4 1.2V 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. UTC UNISONIC TECHNOLOGIES CO., LTD. 18 QW-R109-009,A UTC MM1538 t=CSPRT× LINEAR INTEGRATED CIRCUIT 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 L High-Z Detect Voltage 2.20V typ. 1.80V typ. Return Voltage 2.25V 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. . CHARACTERISTICS Input Load Fluctuation RL=∞ 3 Output Voltage:Vo (V) 2 1 4Ω 8Ω 20Ω 0 8Ω -1 *Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V 4Ω -2 -3 -0.8 ﹢ 20Ω -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Input Voltage:Vin (V) UTC UNISONIC TECHNOLOGIES CO., LTD. 19 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT Input Load Fluctuation (ch2) RL=﹢ 3 Output Voltage:Vo (V) 2 1 4Ω 0 20Ω -1 8Ω ﹢ -0.4 -0.6 20Ω *Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V 4Ω -2 -3 -0.8 8Ω -0.2 0.2 0 0.4 0.6 0.8 Input Voltage:Vin (V) Dead Zone Input voltage: VIN (mV) 0.006 0.004 0.002 20Ω *Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V 8Ω 4Ω 0 -0.002 8Ω 20Ω -0.004 4Ω -0.006 -30 -20 -10 10 0 20 30 Output Voltage:Vo(mV) Dead Output voltage E:VDAED (V) Eo Output Voltage:VEO(V) 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 EOPIN DAED PIN 1.5 2.0 2.5 3.0 3.5 4.0 Control Circuit Power Supply voltage:VSYS1(V) UTC UNISONIC TECHNOLOGIES CO., LTD. 20 QW-R109-009,A UTC MM1538 LINEAR INTEGRATED CIRCUIT Reset Output Voltage:VRST (V) 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 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. UTC UNISONIC TECHNOLOGIES CO., LTD. 21 QW-R109-009,A