Ordering number : EN7893B Monolithic Digital IC LB8649FN Motor Driver for DSCs Feature • Actuator drivers for digital cameras embedded in one chip. 1. Constant current output car stepping motor for SH/AE or VCM × 2 2. Constant voltage output car stepping motor for ZOOM or DC motor driver (Normal rotation/Reverse rotation/Brake) 3. Constant voltage output car stepping motor for AF • No standby current consumption (or zero). (Direct battery connection possible.) • 4 systems for independent power supply (SH/AE, AF, ZOOM or input logic system) • Low voltage driving (Driving by two nickel hydride batteries possible) • Built-in thermal protection circuitry Absolute Maximum Ratings at Ta = 25°C Parameter Max. Power Source Voltage Max. Input Applied Voltage Symbol Conditions Ratings Unit VB max VB power supply 10.5 VCC max VCC power supply 10.5 VIN max 10.5 V V Max. Output Applied Voltage VOUT max 10.5 V Max. Output Current IO max per CH 600 mA Allowable Power Consumption Pd max Circuit board mounting (*1) 1.0 W Operating Temperature Topr -20 to +80 °C Storage Temperature Tstg -55 to +150 °C (*1) Mounting circuit board : 50.0mm × 50.0mm × 0.8mm glass epoxy resin Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 31208 TI IM B8-6248, 6568 / 92706 / 82504 JO IM No.7893-1/9 LB8649FN Allowable Operating Range at Ta = 25°C Parameter Symbol Source Voltage Range VB1, 2, 3 Conditions Ratings (*2) Unit 1.9 to 10 VCC V 1.9 to 10 Input Pin “H” Voltage VINH 1.8 to 10 Input Pin “L” Voltage VINL -0.3 to 0.4 V Constant Voltage Setting Input Range VOC VC1, VC2 0.1 to VB V Constant Current Setting Input Range VO1 IAE, ISH 0.1 to 1.0 V V (*2) There is no priority on each power supply ; VB1, 2, VDD, VCC and VIN. Example1 : VB1 = VB2 = VDD = 2.4V (Battery power supply), VCC = 4V (Step-up power supply), VIN (CPU power supply) = 5V Example2 : VB1 = VB2 = 2.4V, VIN = 3.3V, VDD = VCC = 5V Electrical Characteristics at Ta = 25°C, VB1 = VB2 = VDD = VCC = 2.4V, Rf = 1Ω Parameter Symbol Ratings Conditions min Standby Current typ Unit max ICC0 VB1 = VB2 = VDD = VCC = 8.0V (*3) Operating Current ICC1 IN1 or IN2 or IN3 or IN4 = H (*3) 6 9 Consumption ICC2 IN5 or IN6 or IN7 or IN8 = H (*3) 14 19 ICC3 IN9 or IN10 or IN11 or IN12 = 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 Control Pin Input Current IIN VIN = 5.0V 60 90 μA Overheat Protection THD Design guaranteed (*4) 160 180 200 °C 0.1 Consumption Reference Voltage Detection Temperature 5.0 μA mA V [Constant voltage stepping motor driver for AF] (OUT1, 2, 3, 4) Output Constant Voltage 1 VO1 VC1 = 0.30V 1.46 1.53 1.60 V Output Saturation Voltage 1 VSAT1 IO = 0.2A (upper and lower) 0.27 0.37 0.50 V [Constant voltage driver for ZOOM] (OUT5, 6, 7, 8) Output Constant Voltage 2 VO2 VC2 = 0.30V 1.46 1.53 1.60 V Output Saturation Voltage 2 VSAT2 IO = 0.2A (upper and lower) 0.27 0.37 0.50 V [Constant current driver for SH/AE] (OUT9, 10, 11, 12) Output Constant Current IO Rf = 1Ω, ISH = 0.3V 271 285 302 mA Output Saturation Voltage 3 VSAT3 IO = 0.3A (upper and lower) 0.33 0.44 0.60 V (*3) Measures by summation of current dissipation for each line of VB1, VB2, VDD and VCC. (*4) For the characteristic within the guaranteed temperature range, shipment check is performed at Ta = 25°C. For all temperature range, it is design guaranteed. No.7893-2/9 LB8649FN Package Dimensions unit : mm (typ) 3272 INHD SGND (NC) VDD FC2 FC1 (NC) VCC VB2 (NC) PGND OUT8 Pin Assignment 48 47 46 45 44 43 42 41 40 39 38 37 IN12 1 36 OUT7 IN11 2 35 OUT6 IN10 3 34 OUT5 IN9 4 33 OUT12 IN8 5 32 RFG2 IN7 6 31 OUT11 LAB8649FN IN6 7 30 OUT10 15 16 17 18 19 20 21 22 23 24 OUT1 14 PGND 13 (NC) 25 OUT2 VB1 IN1 12 VCC 26 OUT3 VREF IN2 11 VC1 27 OUT4 VC2 IN3 10 ISH 28 OUT9 IAE IN4 9 (NC) 29 RFG1 (NC) IN5 8 Top view ILB01597 (Note) PGND is connected with both 2 pins. VDD : Input, reference voltage, logic power supply VCC : Constant current control part, output (OUT9, 10, 11, 12) part power supply VB1 : Constant voltage control part, output (OUT1, 2, 3, 4) part power supply VB2 : Constant voltage control part, output (OUT5, 6, 7, 8) part power supply No.7893-3/9 LB8649FN Truth Table 1. Stepping motor constant voltage control for AF Input Output Mode 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 - - * * * * Stand-by 1-2 phase excitation L 1.0V Output OFF L 1.0V H 0.67V • ( - ) is output OFF. • When setting output to “H”, the output voltage is 5.1 times the VC1. 2. Stepping motor constant voltage control for ZOOM or DC motor drive Input IN5 IN6 IN7 L L H L Output IN8 INHD L L L L L OUT5 OUT6 OUT7 - - H L Mode OUT8 Vref - - - - - 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 L H - - L H H L L H H L L H H H * * H H * * H H H H * * * * Stand-by 1-2 phase excitation 1.0V Brake L 1.0V H 0.67V • ( - ) is output OFF, and ( * ) is “Don’t care”. • When setting output to “H”, the output voltage is 5.1 times the VC2. No.7893-4/9 LB8649FN 3. VCM constant current control for SH/AE, or stepping motor drive. Input Output Mode IN9 IN10 IN11 IN12 L L L L H L * * L H * * * * H * * L INHD OUT9 OUT10 OUT11 OUT12 Vref ISH - - - - - - L H L H L H L H L L H 1.0V Stand-by SH & AE Setting voltage H L * * H L L H * * L H * * H L * * L H L L L L state Hold H - - H L L H - - 0.67V Discharge Stand-by • ( - ) is output OFF, and ( * ) is “Don’t care”. • OUT9 and OUT10 are used for the SH. Quick charge and quick discharge circuitry allows the stabilization of start-up characteristic. • OUT10 and OUT11 are used for the AF. • At the time of stand-by, ISH pin voltage becomes discharge state by the internal transistor and it is set to 0V. • In addition, when IN1 to 8 are input, ISH pin is in discharge state (for start-up correction). • When INHD = “L”, Vref voltage is 1.0V. When INHD = “H”, Vref voltage is 0.67V. Application Design Notes 1. Constant current setting (ISH, IAE, RFG1, 2, OUT9 to 12) The constant current setting between pins OUT9 and OUT10 is determined from the ISH input voltage and the connecting resistor of RFG1. As shown in the block diagram, it is controlled in such a way so that the voltage generated at the resistor used for current detection connected between RFG1 and GND would be equal to the ISH input voltage. The formula for calculating the output current is as given below. (OUT9 to OUT10 Output Current) = (ISH Input Voltage) ÷ (RFG1 Resistor + 0.05Ω) The 0.05Ω here is for a common impedance of the output Tr emitter which drives constant current in the RFG pin and the sensing wiring for the constant current control amplifier. In the same way, the constant current setting between pins OUT11 and OUT12 is determined from the IAE input voltage and the connecting resistor of RFG2. Furthermore, as the constant current control block within the IC is connected to PGND, when supplying voltage to the ISH pin or IAE pin which has been divided by resistors be sure to connect the ground side of these resistors to PGND. 2. Quick charge/discharge circuitry (FC1, OUT9, OUT10) Quick discharge circuitry has been built in to the shutter control block (OUT9 to OUT10) to support high-speed shutter control, quick recharge, quick discharge and consecutive shots. Quick recharge and quick discharge circuitry has not been built in to the AE control block (OUT11 to OUT12). Therefore, make sure to use the block (OUT9 to OUT10) for the shutter drive. No.7893-5/9 LB8649FN 3. Start-up correction function (ISH, OUT9, OUT10) The ISH pin input voltage is set with the decay time constant to be larger than the coil decay time constant by using the external CR and the start-up correction occurs with respect to the coil wave. By doing this, stable shutter operation can be carried out with respect to the power supply variations. (Note) For the ISH pin start-up correction, check the coil current start-up wave for the VCC reduced voltage when there is no ISH pin capacitor and choose a capacitance so that the decay time constant is lower than this wave. However, at times such as when the power supply voltage is stable or the start-up correction function is not required, such a start-up correction capacitor is not necessary. 4. Phase compensation capacitor (FC1, FC2) See and check the capacitor value for FC1 and FC2 between 0.0015 to 0.033μF. Choose a capacitance value which does not cause oscillation problems for output. (In particular, when a coil with large inductance is used, it is necessary to choose a sufficiently large capacitance.) Also, as the constant current control block within the IC is connected to PGND, be sure to connect the ground side of the FC1 pin and FC2 pin capacitor to PGND. 5. Constant voltage control Oscillation-stopping capacitor (OUT1 to 8) When controlling the constant voltages, it is necessary to place capacitors between the OUT pins to stop oscillation. See and check the capacitor value between 0.01μF to 0.1μF. Choose a capacitance value which does not cause oscillation problems for output. When driving at saturation, there is no need for such oscillation-stopping capacitor. 6. GND wiring and power line capacitors : (PGND, SGND, VCC, VB1, 2, VDD) Connect PGND (2 places) and SGND near the IC, and place the capacitors as close as possible to each of the power pins. No.7893-6/9 LB8649FN 7. Input pin equivalent circuit No.7893-7/9 LB8649FN Block Diagram No.7893-8/9 LB8649FN SANYO Semiconductor Co.,Ltd. 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 SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellectual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of March, 2008. Specifications and information herein are subject to change without notice. PS No.7893-9/9