5-CH BTL DRIVER FOR DVD PLAYER WITH DISC BIDIRECTIONAL DRIVER AND TWO VARIABLE REGULATORS DESCRIPTION The SA5888 is a five-channel BTL driver IC for driving the motors and actuators in products such as CD - ROM / DVD drivers. It is also build-in two independent precision voltage regulators with adjustable range from 1.5V to 4V and one channel bi-direction DC motor driver for tray. FEATURES * Wide dynamic range (4.0V (Typ.) when VCC = 8V, PVCC =5V, HSOP-28-375-0.8 and RL = 8 ). * Level shift circuit on chip. * Thermal shutdown circuit on chip. * Mute mode built-in. * Two regulator controllers built-in. APPLICATIONS * Five drivers build-in: dual actuator drivers, sled motor driver, * CD spindle driver and tray in-out driver. * CD-ROM * DVD ORDERING INFORMATION Part No. Package Marking Material Packing Type SA5888 SA5888 Pb free Tube SA5888TR SA5888 Pb free Tape & Reel SA5888G Halogen free Tube SA5888G Halogen free Tape & Reel SA5888G SA5888GTR HSOP-28-375-0.8 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 1 of 8 BLOCK DIAGRAM 28 20 24 25 23 22 Mute VINTK 10K 18 17 16 15 15K + - 26 21 Spindle Driver(4x) 10K Actuator Driver(6x) 25K VCC BIAS 27 19 PVCC PVCC VINFC 1 VCC 10K TRB_1 25K Sled driver(4x) 10K 2 25K Tray Driver 5 3 4 9 10 Actuator Driver(6x) PreDRV 8 7 6 11 12 13 14 ABSOLUTE MAXIMUM RATINGS (Otherwise specified, Tamb=25°C) Characteristics Power Supply Voltage Symbol VCC, 1/2PVCC Value Unit 8 V Power Dissipation PD 1.7* W Operating Temperature Topr -35~+85 °C Storage Temperature Tstg -55~+150 °C * When mounted on a 70mm X 70mm X 1.6mm glass epoxy board. Reduced by 13.6mW for each increase in Tamb of 1°C over 25°C. ELECTRICAL CHARACTERISTICS (Unless other specified, Tamb=25°C, VCC=8V, PVCC =5V, BIAS=2.5V, RL=8 /10 /20 /45 ) Characteristics Min. Typ. Max. Unit ICC -- 30 -- mA Output Offset Voltage Voo -50 -- 50 mV Maximum Output Amplitude VOM 3.6 4.0 -- V -- 23.5 -- dB Quiescent Current Symbol Test conditions Actuator Driver Voltage Gain Gv 10 Load VIN=BIAS ±0.2V HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 2 of 8 Characteristics Symbol Test conditions Min. Typ. Max. Unit -50 0 50 mV -- 3.5 -- V Spindle Driver Output Offset Voltage VOOFSP Maximum Output Amplitude VOMSP 8 Closed-Circuit Voltage Gain GVSP VIN=BIAS ±0.2V 13.3 15.5 17.5 dB VIN=BIAS ±0.2V 0 1 2 dB -100 0 100 mV 7.5 9.0 -- V 18 20 22 dB Gain Error By Polarity GVSP Load Sled Driver Offset Voltage VOOFSL Maximum Output Amplitude VOMSL Voltage Gain 20 Load GVSL VIN=BIAS ±0.2V STBY On Voltage VSTBY1 All Channels Off 0 -- 0.5 V STBY Off Voltage VSTBY2 All Channels On 2.0 -- -- V 0.7 1.1 1.5 V - - 0.1 V 1.0 1.55 2.2 V 7.4 9.2 11 dB STBY Logic Tray Motor Driver Output Saturation Voltage 1 Output Saturation Voltage 1 Between F&R Output Saturation Voltage 2 Output Adjustable Gain On “H”Side Voltage VSAT1 VSAT1 VSAT2 VVtrH Upper + Lower saturation, IL=200mA Output saturation voltage 1 between FWD and REV Upper + Lower saturation, IL=500mA VCTR=2V Tray Motor Driver Input Logic High Level Input Voltage VIH 1.5 - VCC V Low Level Input Voltage VIL -0.3 - 0.5 V High Level Input Current IIH - 180 270 µA IL = 500mA 1.5 -- 4.0 V IL = 0~500mA -50 -0 50 mV -25 0 25 mV VFWD=VREV=5V Regulator Output Voltage Output load differential Power supply voltage differential Vreg VRL VVCC (VCC=4.5~8V) IL = 500mA This device is not designed for protection against radioactive rays; It is based on 8550C PNP application; It is based on 8550D PNP application. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 3 of 8 28 27 26 25 24 23 22 VOTK+ VOTK- VOLD+ VOLD- PVCC NC VCTL GND VINLD NC TRB_2 VINTK BIAS MUTE PIN CONFIGURATIONS 21 20 19 18 17 16 15 TRB_1 REGO2 VINSL+ REGO1 FWD REV 8 9 10 11 12 13 14 VOFC+ 7 VOFC- 6 VOSL- 5 VOSL+ 4 VOTR+ 3 VOTR- 2 VCC 1 VINFC SA5888 PIN DESCRIPTIONS Pin No. Pin Name Description 1 VINFC Focus driver input 2 TRB_1 Connect to external transistor base 3 REGO2 Regulator voltage output, connect to external transistor collector 4 VINSL+ Sled driver input 5 REGO1 Regulator voltage output, connect to external transistor collector 6 FWD Tray driver forward input 7 REV Tray driver reverse input 8 VCC VCC 9 VOTR- Tray driver output(-) 10 VOTR+ Tray driver output(+) 11 VOSL+ Sled driver output (+) 12 VOSL- Sled driver output (-) 13 VOFC- Focus driver output (-) 14 VOFC+ Focus driver output (+) 15 VOTK+ Tracking driver output (+) 16 VOTK- Tracking driver output (-) 17 VOLD+ Spindle driver output (+) 18 VOLD- Spindle driver output (-) 19 PVCC Vcc for power block of spindle, tracking and focus 20 NC 21 VCTL Speed control input of tray driver 22 GND Ground 23 VINLD No connection Spindle driver input HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 4 of 8 Pin No. Pin Name Description 24 NC 25 TRB_2 Connect to external transistor base 26 VINTK Tracking driver input 27 BIAS Bias input 28 MUTE Mute control No connection Notes: The indicated polarities for the output pins are means polarity to inputs. Always ensure that VCC PVCC FUNCTION DESCRIPTION Operation notes 1) This IC has a built in thermal shutdown circuit that mutes the output current when the chip temperature reaches 135°C (typ.). The hysteresis is set to 25 °C (typ.), so the driver circuits start up again when the chip temperature falls to 120°C (typ.). 2) The driver buffer is switched off when the supply voltage falls below 3.6V (typ.), and is switched back on when the voltage reaches 3.8V (typ.) again. 3) Bias pin (pin27) should be pulled up to more than 1.2V. In case the bias pin voltage is pulled down below 0.9V (Typ), the output current is muted. 4) The stand by circuit logic is active low. 5) Mute is applied when the buffer pin voltage falls below 1.0V (typ.). Normally, operate with this pin at1.8V at least. 6) Connect a bypass capacitor between the bases of the power supply pins of this IC. 7) Tray driver logic input: FWD(pin6) REV(pin7) VOTR+(pin10) VOTR-(pin9) Function L L OPEN OPEN Open mode L H L H Reverse mode H L H L Forward mode H H L L Brake mode The design of 6,7 pin, consider the driver upper and lower unable ducting at the same time, be sure to do it, the motor forward and reverse input by the open mode, and the interval of the open mode is more than 10ms. Output high level voltage VOL+, VOL- ,varied with the motor controller, it can output 3 times voltage of 21pin, and in high level. In this time, the low level voltage input power pipe as the output saturation voltage. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 5 of 8 ELECTRICAL CHARACTERISTICS CURVES 12 RL=20 10 VCC=12V 12 PVCC=5V 8 BIAS=2.5V 8 6 4 2 0 -2 -4 -6 -8 -10 -12 -2 -1 0 1 INPUT VOLTAGE:VIN (V) Fig 1. Thermal dissipation curve 2 Fig 2. Driver I/O characteristics (Spindle) Fig 3. Driver I/O characteristics (sled) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 6 of 8 TEST CIRCUIT TYPICAL APPLICATION CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 7 of 8 Note: the value of R1 and R2 in testing circuit and typical application circuit is as the following table: Solution SA5888 R1 and R2 are: 24K and 15K 24K and 15K MTK 20K and 12K PACKAGE OUTLINE HSOP-28-375-0.8 Unit: mm 0.8 5.15±0.10 0.35 0.25±0.1 18.05±0.20 Disclaimer: • Silan reserves the right to make changes to the information herein for the improvement of the design and performance without further notice! • All semiconductor products malfunction or fail with some probability under special conditions. When using Silan products in system design or complete machine manufacturing, it is the responsibility of the buyer to comply with the safety standards strictly and take essential measures to avoid situations in which a malfunction or failure of such Silan products could cause loss of body injury or damage to property. • Silan will supply the best possible product for customers! HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2009.07.16 Page 8 of 8