CMD8649

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 Maximum supply voltage Max input application voltage Max output application voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VB max VCCmax VIN max VOUT max Io max Pd max Topr Tstg per CH Substrate mounting Conditions VB power supply VCC power supply Ratings 10.5 10.5 10.5 10.5 600 1.0 -20 to +80 -55 to +150 Unit V V V mA W °C °C (*1) Mounting substrate: 76.1mm×114.3mm×1.6mmt, glass epoxy 4. Allowable Operating Ranges at Ta=25°C Parameter Symbol Supply voltage range Input pin H voltage Input pin L voltage VB1,2,3 VCC VINH VINL VC1,VC2 (*2) Conditions Ratings 1.9 to 10 1.9 to 10 1.8 to 10 -0.3 to 0.4 0.1 to VB 0.1 to 1.0 Unit V V V V V Constant voltage setting input range VOC 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) 1 Allowable power dissipation, Pdmax - W 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: server@ceramate.com.tw 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 Symbol ICC0 ICC1 ICC2 ICC3 Reference voltage Vref1 Vref2 Conditions VB1=VB2=VCC=VDD=8.0V (*3) IN1orIN2 or IN3orIN4=H IN5orIN6 or IN7orIN8=H Iref=-1mA，INHD=L Iref=-1mA，INHD=H (*3) (*3) 0.95 0.64 Ratings Min Typ 0.1 6 14 18 1.0 0.67 60 160 180 Max 5.0 9 19 25 1.05 0.70 90 200 V mA °C mA Unit mA IN9orIN10 or IN11orIN12＝H (*3) 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) Output constant voltage 1 Output saturation voltage 1 Output constant current 2 Output saturation voltage 2 Output constant current VO1 VSAT1 VO2 VSAT2 IO VC1=0.30V Io=0.2A(Upper side + Lower side) VC2=0.30V Io=0.2A(Upper side + Lower side) Rf=1Ω,ISH=0.3V 1.46 0.27 1.46 0.27 271 1.53 0.37 1.53 0.37 285 1.60 0.50 1.60 0.50 302 V V V V mA V Constant-voltage driver for ZOOM (OUT5, 6, 7, 8) Constant-current driver for SH/AE (OUT9, 10, 11, 12) 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. * 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: server@ceramate.com.tw 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 6. Pin Assignment/SQFP48 PGND 38 VREF 48 47 46 45 44 43 42 41 40 39 37 IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12 1 2 3 OUT1 VCC (NC) (NC) VC2 IAE ISH VC1 (NC) VB1 36 35 34 33 OUT2 OUT3 OUT4 OUT9 RFG1 OUT10 OUT11 RFG2 OUT12 OUT5 OUT6 OUT7 4 CMD8649 5 6 7 8 9 1 1 1 13 14 15 16 17 32 31 30 29 28 27 26 25 18 19 20 21 22 23 24 PGND SGND INHD 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: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 3 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052 OUT8 FC1 (NC) FC2 VDD VCC (NC) (NC) VB2 CMD8649 (Preliminary) Lens Motor Driver for Digital Still Camera 7. Truth Table (1) Stepping motor constant-voltage control for AF Input IN1 L H H L L L L L H H * * IN2 L L L L H H H L L H * * IN3 L L H H H L L L L * H * IN4 L L L L L L H H H * H L * H -: Output OFF For output “H”, VC1×5.1 is output. (2) Stepping motor constant-voltage control for ZOOM or DC motor drive Input IN5 L H H L L L L L H H * * IN6 L L L L H H H L L H * * IN7 L L H H H L L L L * H * IN8 L L L L L L H H H * H * L H L INHD L OUT5 H H L L L H H OUT6 L L H H H L H H H 1.0V 0.67V Brake Output OUT7 H H H L L L OUT8 L L L H H H 1.0V 1 - 2 phase excitation Vref Mode Standby 0.67V L INHD L OUT1 H H L L L H OUT2 L L H H H L Output OFF 1.0V Output OUT3 H H H L L L OUT4 L L L H H H 1.0V 1 - 2 phase excitation Vref Mode Standby -: 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: server@ceramate.com.tw 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 IN9 L H L * * H L * * L IN10 L L H * * L H * * L IN11 L * * H L * * H L L IN12 L * * L H * * L H L H H L L H Hole H L L H Discharge Standby 0.67V L INHD OUT9 H L OUT10 L H H L L H 1.0V Set voltage condition SH & AE Output OUT11 OUT12 Vref ISH Mode 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: server@ceramate.com.tw 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) Coil current Rise compensation 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: server@ceramate.com.tw 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 65kΩ 1µA or less 80kΩ IN pin 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: server@ceramate.com.tw 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: server@ceramate.com.tw Tel:886-3-3214525 Http: www.ceramate.com.tw Page 8 of 8 Rev 0.1 Mar. 3,2004 Fax:886-3-3521052