CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera 1. Case Outline: SQFP48(7×7) Plastic Package 2. Function and Application: DSC driver 3. Absolute Maximum Ratings at Ta=25°C Parameter Symbol Maximum supply voltage Conditions Ratings Unit VB max VB power supply 10.5 VCCmax VCC power supply 10.5 V Max input application voltage VIN max 10.5 V Max output application voltage VOUT max 10.5 V Maximum output current Io max per CH 600 mA Allowable power dissipation Pd max Substrate mounting 1.0 W Operating temperature Topr -20 to +80 °C Storage temperature Tstg -55 to +150 °C (*1) Mounting substrate: 76.1mm×114.3mm×1.6mmt, glass epoxy 4. Allowable Operating Ranges at Ta=25°C Parameter Symbol VB1,2,3 Supply voltage range Conditions Ratings (*2) 1.9 to 10 VCC 1.9 to 10 Unit V Input pin H voltage VINH 1.8 to 10 V Input pin L voltage VINL -0.3 to 0.4 V 0.1 to VB V 0.1 to 1.0 V Constant voltage setting input range VOC VC1,VC2 Constant current setting input range VOI IAE,ISH (*2) NO hierarchical relationship between VB1, 2, VDD, VCC and VIN. Example 1: VB1=VB2=VDD=2.4V(Battery power supply), VCC=4V (step-up power supply) VIN (CPU power supply)=5V Example 2: VB1=VB2=2.4V, VIN=3.3V, VDD=VCC=5V Pd max - Ta 1.2 Mounted on a board(76.1mm×114.3mm×1.6mmt, glass epoxy) Allowable power dissipation, Pdmax - W 1 0.8 0.6 0.56 0.4 0.2 0 -20 0 20 40 60 80 100 Ambient Temperature, Ta - °C (B8-6247) * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 1 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera 5. Electrical Characteristics (VB=VCC=2.4V, Rf=1Ω)/Ta=25°C Parameter Standby current dissipation Operating current dissipation Reference voltage Symbol Ratings Conditions Min Typ Unit Max ICC0 VB1=VB2=VCC=VDD=8.0V (*3) 0.1 5.0 ICC1 IN1orIN2 or IN3orIN4=H (*3) 6 9 ICC2 IN5orIN6 or IN7orIN8=H (*3) 14 19 ICC3 IN9orIN10 or IN11orIN12＝H (*3) 18 25 Vref1 Iref=-1mA，INHD=L 0.95 1.0 1.05 Vref2 Iref=-1mA，INHD=H 0.64 0.67 0.70 60 90 mA mA V Control pin input current I IN VIN=5.0V Overheat protection operation THD Design guarantee (*4) temperature AF/STP constant-voltage stepping motor driver(OUT1, 2, 3, 4) mA 160 180 200 °C Output constant voltage 1 VO1 VC1=0.30V 1.46 1.53 1.60 V Output saturation voltage 1 VSAT1 Io=0.2A(Upper side + Lower side) 0.27 0.37 0.50 V Constant-voltage driver for ZOOM (OUT5, 6, 7, 8) Output constant current 2 VO2 VC2=0.30V 1.46 1.53 1.60 V Output saturation voltage 2 VSAT2 Io=0.2A(Upper side + Lower side) 0.27 0.37 0.50 V 271 285 302 mA Constant-current driver for SH/AE (OUT9, 10, 11, 12) Output constant current IO Rf=1Ω,ISH=0.3V Output saturation voltage 3 VSAT3 Io=0.3A(Upper side + Lower side) 0.33 0.44 0.60 (*3) Determined by the sum of the current drain of VB1, VB2, VDD, and VCC lines. (*4) For characteristics within the temperature guarantee range, carry out the shipment inspection at Ta =25°C, instead of at all temperatures, for design guarantee. V * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 2 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera (NC) (NC) IAE ISH VC2 VC1 VREF VCC VB1 (NC) PGND OUT1 6. Pin Assignment/SQFP48 48 47 46 45 44 43 42 41 40 39 38 37 1 36 OUT2 IN2 2 35 OUT3 IN3 3 34 OUT4 IN4 4 33 OUT9 IN5 5 32 RFG1 IN6 6 31 OUT10 IN7 7 30 OUT11 IN8 8 29 RFG2 IN9 9 28 OUT12 IN10 1 27 OUT5 IN11 1 26 OUT6 IN12 1 25 OUT7 13 14 15 16 17 18 19 20 21 22 23 24 INHD SGND (NC) VDD FC2 FC1 (NC) VCC VB2 (NC) PGND OUT8 CMD8649 IN1 Note: Connect PGND at two points. VDD: Input, reference voltage, logic power supply VCC: Power supply for constant-current control and outputs (OUT9, 10, 11, and 12) VB1: Power supply for constant-voltage control and outputs (OUT1, 2, 3, and 4) VB2: Power supply for constant-voltage control and outputs (OUT5, 6, 7, and 8) * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 3 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera 7. Truth Table (1) Stepping motor constant-voltage control for AF Input Output IN1 IN2 IN3 IN4 INHD OUT1 OUT2 OUT3 OUT4 Vref L L L L L - - - - - H L L L H L - - H L H L H L H L L L H L - - H L L H H L L H H L L H L L L H - - L H L H L H L H L L L H - - L H H L L H H L L H H H * * - - * * H H - - * * * * L Mode Standby 1 - 2 phase excitation 1.0V Output OFF L 1.0V H 0.67V -: Output OFF For output “H”, VC1×5.1 is output. (2) Stepping motor constant-voltage control for ZOOM or DC motor drive Input Output IN5 IN6 IN7 IN8 INHD OUT5 OUT6 OUT7 OUT8 Vref L L L L L - - - - - H L L L H L - - H L H L H L H L L L H L - - H L L H H L L H H L L H L L L H - - L H L H L H L H L L L H - - L H H L L H H L L H H H * * H H * * H H H H * * * * L L H Mode Standby 1 - 2 phase excitation 1.0V Brake 1.0V 0.67V -: Output OFF *: Don’t care For output “H”, VC2×5.1 is output. * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 4 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera (3) VCM constant-current control for SH/AE or stepping motor drive Input Output IN9 IN10 IN11 IN12 L L L H L L INHD OUT9 OUT10 OUT11 OUT12 Vref ISH L - - - - - - * * H L H * * L H * * H L H L * * L H L H H L * * H L L H * * L H * * H L H L * * L H L H L L L L - - L Mode Standby SH & AE 1.0V Set voltage condition Hole H - - 0.67V Discharge Standby -: Output OFF *: Don’t care • OUT9 and 10 are for SH and have the stable start characteristics because of rapid charge and discharge circuits. • OUT10 and 11 are for AE. • At standby, the ISH pin voltage is put into the discharge condition by an internal transistor and set to 0 V. • ISH pin is also in the discharge condition (for rise compensation) when IN1 - 8 are entered. • The Vref voltage is 1.0 V with 1NHD = “L” and 0.67 V with 1NHD = “H.” 8. Considerations for Design (1) Constant-current setting (ISH, IAE, RFG1, 2, OUT9 to 12) The constant current between OUT9 and OUT10 is set from the ISH input voltage and RFG1 connection resistance. Control is made so that the voltage generated at a current detection resistor connected between RFG1 and GND is equal to the ISH input voltage as shown in the block diagram. The output current is calculated as follows: (Output current between OUT9 and OUT10) = (ISH input voltage) * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 5 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera (2) Rapid charge and discharge circuits (FC1, OUT9, OUT10) SH control blocks (OUT9 - OUT10) incorporate rapid charge and discharge circuits to enable high-speed control of the shutter and a rapid discharge circuit to enable consecutive filming. As these circuits are not built into AE control blocks (OUT11 to OUT12), use OUT9 and OUT10 blocks for shutter drive. (3) Rise compensation function (ISH, OUT9, OUT10) ISH Rise compensation VCC high (without ISH capacitor) VCC low (without ISH capacitor) Rise compensation coil current Coil current ISH discharge SH closing Setting the input voltage of ISH pin larger than the coil time constant by means of an external CR enables application of rise compensation to the coil waveform, ensuring stable shutter operation against fluctuation of power supply. (Note) In ISH rise compensation, the rise waveform of coil current during VCC power reduction in the condition without ISH capacitor is checked. The capacity is determined so that the time constant becomes lower than this waveform. Note that the rise compensation capacitor is not necessary when the rise compensation function is not necessary, for example, when the stable supply voltage is supplied. (4) Phase compensation capacitors (FC1, 2) Set FC1 and 2 capacitors to the capacitance value within the range of 0.01 to 0.1µF that does not present an oscillation problem to the output. Particularly when a coil with high impedance is to be used, it is necessary to provide an allowance to the capacitance. As the constant-current control block is connected to PGND in IC, connect the GND side of FC1 and 2 capacitors to PGND. (5) Constant-voltage control oscillation preventive capacitors (OUT1 to 8) For constant-voltage control, it is necessary to insert a capacitor between OUT pins to prevent oscillation. Set the capacitor within a range of 0.01µF to 0.1µF that does not present an oscillation problem to the output. This oscillation preventive capacitor is not necessary when drive is made in the saturated condition. (6) Capacitors for GND wiring and each power line (PGND, SGND, VCC, VB1, 1, VDD) Connect PGND (two points) and SGND near IC and insert a capacitor directly near the power pin for each power supply. * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 6 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera (7) Input pin equivalent circuit • IN1 to 12, INHD pins • VC1, 2 pins Logic 1µA or less 65kΩ IN pin 80kΩ VC pin • IAE pin 1µA or less IAE pin • ISH pin 1µA or less ISH pin Rise compensation control circuit * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 7 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera 9. Internal Equivalent Circuit * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 8 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052