 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| ML58C88 ML58C88 CMOS BTL Drivers for DVD players The ML58C88 is a five-channel CMOS BTL driver IC for driving the motors and actuators in DVD players or other applications. The ML58C88 has independent precision voltage regulators with adjustable range from 1.5V to 4 V. APPLICATION BTL. Driver for CD,CD-ROM and DVD. FEATURES Two channels are voltage-type BTL drivers for actuators of tracking and focus. Two channels are voltage-type BTL driver for sled and spindle motors. It is also built-in one channel bi-direction DC motor driver for tray. Wide dynamic range [4.5V (typ.) when Vcc1 = Vcc2 = 5V, at RL=20 load]. Separating power of Vcc1 and Vcc2 is to improve power efficiency by a low supply voltage for tracking, focus and spindle. Level shift circuit built-in. Thermal shut down circuit built-in. Dual actuator drivers: A general purpose input OP provides differential input for signal addition. The output structure is two power OPAMPs in bridge configuration. Sled motor driver : A general purpose input OP provides differential input for signal addition. The output structure is one power OPAMP in bridge configuration. Spindle driver: Single input linear BTL dirver. The output structure are two power OPAMPs in bridge configuration. Tray in-out driver: The DC motor driver forward/reverse control motor. supports for tray 2 Built-in regulator controllers: Adjustment range 1.5V ~ 4V -1- ML58C88 ABSOLUTE MAXIMUM RATINGS (Ta = 25 C) Parameter Supply Voltage Power dissipation Operate Temp Range Storage Temp range Symbol Limits Unit Vcc1 Vcc2 6 1.7* -35 ~ +85 **-55 ~ +150 V W C C Pd T opr Tstg * When mounted on a 70mmx70mmx1.6mm glass epoxy board ** Reduced by 13.6mW for each increase in Ta of 1C over 25C **Should not exceed Pd or ASO and Tj =150C values. OPERATING CONDITIONS (Ta = 25 C) ) Parameter Supply Voltage Symbol Vcc1 Vcc2 Limits 2.5 ~ 5.5 2.5 ~ Vcc1 Unit V V BLOCK DIAGRAM -2- ML58C88 ELECTRICAL CHARACTERISTICS (Unless otherwise specified Ta=25, VCC1=VCC2=5V, BIAS=2.5V, RL=8/10/20/45) PARAMETER Symbol CONDITIONS MIN TYPE MAX UNITS Quiescent Current Voltage for mute ON Voltage for mute OFF ICC Vston Vstoff 5 -1.5 -@10 Load VIN=BIAS+0.2Vpp ac @1KHz 15 ---4.0 23.5 25 0.5 -+ 50 -25.5 mA V V mV V dB Output offset voltage Maximum output voltage Voltage gain Voo Vom Gv 3.3 21.5 < Sled motor driver > Output offset voltage Maximum output voltage Closed loop voltage gain Output offset voltage Maximum output voltage Voltage gain Gain error by polarity Voofs1 Voms1 Gvs1 @20 Load VIN=BIAS+0.2Vpp ac @1KHz -3.5 18 -4.0 20 +100 -22 mV V dB < Spindle motor driver > Voofld Vomax Gvld Gvld @8 Load VIN=BIAS+0.2Vpp ac @1KHz VIN=BIAS+0.2Vpp ac @1KHz --13.3 -3.5 15.5 +50 -17.5 mV V dB dB < Tray motor driver > Output saturation voltage 1 Output saturation voltage between F & R Output saturation voltage 2 Input Threshold Pull Down Resistor VSAT1 VSAT1 VSAT2 Upper + Lower saturation, IL=200mA Output saturation voltage 1 between FWD and REV Upper + Lower saturation, IL=500mA --1.0 1.1 -1.55 1.5 0.1 2.2 V V V < Tray motor driver input logic > VTH RL 0.5 -IL=500mA *** IL=500mA (Vcc=4.5 ~8V) IL=500mA -200 1.5 -4.0 V k V mV mV < Regulator > ** Output voltage Output load differential Power supply voltage differential Vreg VRL V VCC 1.5 -50 -25 0 0 50 25 * This devic e is not designed for protection against radioactive rays. ** It is based on 8550C PNP application. *** It is based on 8550D -3- ML58C88 PIN CONFIGURATION -4- ML58C88 PIN DESCRIPTION PIN No. Pin Name Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 VINFC TRB_1 REGO2 VINSL + REGO1 FWD REV Vcc1 VOTRVOTR+ VOSL+ VOSLVOFCVOFC+ VOTK+ VOTKVOLD+ VOLDVcc2 Nc VCTL GND VINLD Nc TRB_2 VINTK BIAS MUTE Input for focus driver Connect to external transistor base Regulator voltage output, connect to external Input for the sled driver Regulator voltage output, connect to external Tray driver forward input Tray reverse forward input Vcc for pre-drive block and power block of sled Tray driver output (-) Tray driver output (+) Sled driver output (+) Sled driver output (-) Focus driver output (-) Focus driver output (+) Tracking driver output (-) Tracking driver output (+) Spindle driver output (+) Spindle driver output (-) Vcc for power block of spindle , tracking and focus No Connection Speed control input of tray driver Ground Input for spindle driver No Connection Connect to external transistor base Input for tracking driver Input for reference voltage Input for mute control Notes) Symbol of + and - (output of drivers) means polarity to input pin. (For example, if voltage of pin 1 is high, pin 14 is high) -5- ML58C88 POWER DISSIPATION CURVE *70mm x 70mm x 1.6mm glass epoxy board *De-rating is done at 13.6mW/ for operating above T= 25 OPERATION NOTES 1) The built-in thermal shutdown circuit mutes the output current when the chip temperature reaches 175 (typ). The hysteresis is set to 25C (typ.) ,so the circuit will start up again when the chip temperature falling to 150C (typ.) 2) In case mute pin voltage is under 0.5V and NC, output current is muted (except for tray motor driver). Mute pin voltage should be more than 2.0V for normal application. 3) Bias pin (pin 27) should be pulled up more than 1.2V. In case the bias pin voltage is pulled down below 0.9V (typ.), the output current is muted. 4) Insert the bypass capacitor (~0.1uF) between Vcc pin and GND pin as close as possible. 5) Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect them to the external GND. 6) NC pins (20,24) are reserved for internal test. Please keep them floating. 6 ML58C88 7) Tray driver logic input: FWD (pin 6) REV (pin 7) VOTR+(pin10) OPEN L H L VOTR- (pin 9) OPEN H L L Function Quiescent Current Voltage for mute ON Voltage for mute OFF Output offset voltage L H L H Open Mode Reverse Mode Forward Mode Brake Mode Input circuit of pin 6 and pin 7 is designed to avoid simultaneous activation of upper and lower output it ; however, in order to improve reliability, apply motor forward/reserve input once through open mode. We recommend time period for open longer tan 10 sec. "H" side Output voltage on output voltage (VOL+,VOL-) varies depending on output control therminal for tray (pin21). "H" side output voltage is set three times (9.2dB Typ.). VTCL(pin21). And. "L" side output voltage is equal to output saturation voltage. APPLICATION CIRCUIT 7 ML58C88 TEST & MEASUREMENT CIRCUIT 8 ML58C88 PACKAGE INFORMATION Package Type: HSOP28 SYMBOL A A1 A2 B b1 C D E E1 e L MILLIMETERS MIN. ---4.95 0.23 0.2 17.89 7.3 9.6 INCHES MIN. ---0.195 0.009 0.008 0.704 0.287 0.378 MAX. 2.75 0.3 2.45 5.35 0.47 0.36 18.8 7.9 10.65 MAX. 0.108 0.012 0.096 0.211 0.019 0.014 0.740 0.311 0.419 0.8 (TYP) 0.3 0.031 (TYP) 0.012 -- -- 9 ML58C88 MARKING INFORMATION Designator ab cd For Example : Description Year Code Week Code 10 |
Price & Availability of ML58C88
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |