LB8659PL

Ordering number : ENN7899 LB8659FN LB8659PL Features Monolithic Digital IC DSC Motor Driver • An actuator driver for digital camera is implemented on a single chip. (1) Supports a constant voltage for the AF H-bridge×2 : a stepping motor (STM) ×1. - Constant voltage drive. - Enables 1 phase, 1-2 phase and 2-phase excitation. - VC1 and VC2 allow the constant voltage for each channel to be set independently. (2) Supports a constant current for the shutter H-bridge×1 : a voice coil motor (VCM) ×1. - Constant current drive. - ICH allows current setting for each current carrying direction. →Supports current suppression while the shutter is open. [applies only to LB8659FN] - A fast charge/discharge circuit allows for stabilization of response speed of the continuous drive mode. - Allows offsetting of the constant current rising waveform with an external C. (The external C is not required when an offset is not performed.) →Prevent current rising variation of coil caused by supply voltage fluctuation. - Implements regenerative brake logic. (3) Supports a constant voltage for the iris H-bridge ×1 : a voice coil motor (VCM) ×1. - Constant voltage drive. - VC4 allows the independent constant voltage to be set. (4) Supports a constant voltage for the zoom H-bridge×1 : a DC motor (DCM) ×1. - Constant voltage drive. - VC3 allows the independent constant voltage to be set. - Built-in short brake. (5) Supports an open collector output for the photo sensor×3 : a photo sensor (PR/PI) ×3. - AFPI and ZMPI are turned ON in synchronization with focus mode and zoom mode, respectively. - ZMPR can be controlled independently, regardless of mode. [Actuator applications] Focus Applications STM Shutter VCM Iris VCM Zoom DCM Continued on next page. Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein. 92706 / 62504 JO IM No.7899-1/16 LB8659FN, LB8659PL Continued from preceding page. • Enables simultaneous drive of actuator. • Parallel control with 11input ports (one of which is used to photo sensor control). • Two power supply systems. • Supports low voltage drive (1.9V min). • Low saturation output (Vsat = 0.37Vtyp at IO = 200mA). • Current dissipation in stand-by state is 0 (zero). • Built-in overheat protection circuit. • Small and thin package. VQFN44 (6.0×6.0) for LB8659FN and VQLP40 (5.0×5.0) for LB8659PL. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum power supply voltage Symbol VB1 max VB2 max OUT1, 2, 3, 4, 7, 8, 9, 10 Maximum applied output voltage VOUT max OUT5, 6 ZMPR, ZMPI, AFPI OUT1, 2, 3, 4, 7, 8 Maximum output current IOUT max OUT5, 6, 9, 10 ZMPR, ZMPI, AFPI Maximum applied input voltage Allowable power dissipation Operating temperature Storage temperature VIN max Pd max Topr [LB8659FN] Tstg [LB8659PL] IN1 to 11 Standard PWB mounting (*1) Standard PWB mounting (*2) [LB8659FN] [LB8659PL] Conditions Ratings -0.3 to 10.5 -0.3 to 10.5 -0.3 to VB1+VF -0.3 to VB2+VF -0.3 to 10.5 600 800 30 -0.3 to 10.5 1.9 1.1 -20 to +80 -55 to +150 -55 to +125 W °C °C V mA V V Unit (*1) Standard PWB : 30mm×50mm×0.8mm glass epoxy resin 4-layer PWB (*2) Standard PWB : 40mm×50mm×0.8mm glass epoxy resin 4-layer PWB Recommended Operating Range at Ta = 25°C Parameter Voltage for guarantee of function Symbol VB1 opr VB2 opr VOUT1 VOUT2 IOUT VVC1 Constant-voltage setting input range Constant-current setting input range Input pin “H” voltage Input pin “L” voltage VVC2 VIC VINH VINL OUT1, 2, 3, 4, 7, 8 OUT5, 6 OUT9, 10 VC1, VC2, VC4 VC3 IC IN1 to IN11 IN1 to IN11 Conditions Ratings 2.2 to 10 2.2 to 10 0 to VB1 0 to VB2 50 to 500 0.1 to VB1 0.1 to VB2 0.1 to 1.0 1.8 to 10 -0.3 to 0.4 V V V V V mA V Unit Constant-voltage setting range Constant-current setting range No.7899-2/16 LB8659FN, LB8659PL Electrical Characteristics at Ta = 25°C, VB1 = VB2 = 3V Parameter Current dissipation in stand-by state Symbol ISTB Conditions min VB1 = VB2 = 10V Ratings typ 0.1 max 1.0 µA 1 Unit Remarks [Constant-voltage driver for AF] (OUT1, OUT2, OUT3, OUT4) VO11 Output constant-voltage 1 VO12 Output saturation voltage 1 VSAT1 IB11-1 IB11-2 VC1 or VC2 = 0.3V VC1 or VC2 = VREF×0.3 (resistor voltage division) VB1 = 3.0V, IO = 200mA VC1 = VC2 = VREF×0.3 (when 1phase excitation) VC1 = VC2 = VREF×0.3 (when 2phase excitation) 1.52 1.47 1.57 1.57 0.37 7 9 1.62 V 1.67 0.50 10 mA 12 5 V 3 4 2 VB1 system operation current dissipation 1 [Constant- voltage driver for zoom] (OUT5, OUT6) VO21 Output constant-voltage 2 VO22 Output saturation voltage 2 VB2 system operation current dissipation VSAT2 IB22-1 IB22-2 VC3 = 0.3V VC3 = VREF×0.3 (resistor voltage division) VB2 = 3.0V, IO = 300mA VC = VREF×0.3, IN5/IN6 = H/L or L/H VC = VREF×0.3, IN5/IN6 = H/H 1.52 1.47 1.57 1.57 0.44 2.5 8.5 1.62 V 1.67 0.60 3.5 11 V mA 7 8 6 [Constant-voltage driver for iris] (OUT7, OUT8) VO31 Output constant-voltage 3 VO32 Output saturation voltage 3 VB1 system operation current dissipation 3 [Constant-current driver] (OUT9, OUT10) Output constant-current Output constant-current/ voltage variation Output saturation voltage 4 IC output saturation voltage ICH output saturation voltage VB1 system operation current dissipation 4 [Reference voltage circuit] (VREF) VREF output constant-voltage VREF IREF = -1mA 0.95 1.00 1.05 V 18 IO IOLIN VSAT4 VSAT5 VSAT6 IB14 VB1 = 3.0V, between IM and GND : 1.0Ω, IC = VREF/5 VB1 = 3V to 5V (VB1 = 4V typ), IO = 200 mA VB1 = 3.0V, IO = 300mA VB1 = 3.0V, IO = 1mA VB1 = 3.0V, IO = 1mA [applies to LB8659FN only] Short circuit between IM and GND 11 188 -1 200 0 0.44 0.12 212 +1 0.60 0.2 0.1 14 mA % V V V mA 12 13 14 15 16 17 VSAT3 IB13 VC4 = 0.3V VC4 = VREF×0.3 (resistor voltage division) VB1 = 3.0V, IO = 200mA VC4 = VREF×0.3 1.52 1.47 1.57 1.57 0.37 6 1.62 V 1.67 0.50 9 V mA 10 11 9 [Photo sensor drive circuit] (ZMPR, ZMPI, AFPI) Output saturation voltage 7 [Input circuit] (IN1 to IN11) Control pin input current [Others] Overheat protection detection temperature TTSD *Design guarantee 160 180 200 °C 22 IINH IINL VIN = 5.0V VIN = 0V 70 90 0 µA 20 21 VSAT7 IO = 10mA 0.3 0.45 V 19 * Temperature characteristics of design guaranteed, however individual unit testing is not performed. No.7899-3/16 LB8659FN, LB8659PL [Remarks] 1) Specifies the IC standby leak current. 2) Specifies the output voltage when the constant voltage is output from pins OUT1 to OUT4. 3) Specifies the output transistor (upper and lower) saturation voltage at pins OUT1 to OUT4. 4) Specifies the current dissipated at the pin VB1. (IN1/2/3/4=H/L/L/L or L/H/L/L or L/L/H/L or L/L/L/H) 5) Specifies the current dissipated at the pin VB1. (IN1/2/3/4=H/L/H/L or H/L/L/H or L/H/H/L or L/H/L/H) 6) Specifies the output voltage when the constant voltage is output from pins OUT5 to OUT6. 7) Specifies the output transistor (upper and lower) saturation voltage at pins OUT5 to OUT6. 8) Specifies the current dissipated at the pin VB2. 9) Specifies the output voltage when the constant voltage is output from pins OUT7 to OUT8. 10) Specifies the output transistor (upper and lower) saturation voltage at pins OUT7 to OUT8. 11) Specifies the current dissipated at the pin VB1. (IN7/8=H/L or L/H) 12) Specifies the output current when the constant current is output from pins OUT9 to OUT10. 13) Specifies the output voltage variation caused by supply voltage fluctuation when the constant current is output from pins OUT9 and OUT10. 14) Specifies the output transistor (upper and lower) saturation voltage at pins OUT9 to OUT10. 15) Specifies the saturation voltage of the IC pin discharge transistor. 16) Specifies the saturation voltage of the ICH pin discharge transistor. [LB8659FN only] 17) Specifies the current dissipated at the pin VB1. (IN9/10=H/L or L/H or H/H) 18) Specifies the output voltage at VREF. 19) Specifies the saturation voltage of the output transistor at pins ZMPR, ZMPI and AFPI. 20) Specifies the input current when the voltage input at pins IN1 to IN11 is “H”. 21) Specifies the input current when the voltage input at pins IN1 to IN11 is “L” 22) Specifies the overheat protection circuit detection temperature. (design guaranteed) Package Dimensions unit : mm 3293 [LB8659FN] No.7899-4/16 LB8659FN, LB8659PL Package Dimensions unit : mm 3302 [LB8659PL] Pin Assignment SGND PGND 35 VREF (NC) 44 ICH 1 IC 2 IN1 3 IN2 4 IN3 5 IN4 6 IN5 7 IN6 8 IN7 9 IN8 10 IN9 11 12 (NC) 43 42 41 40 39 38 37 36 34 33 (NC) 32 OUT5 31 OUT6 30 OUT1 29 OUT2 (NC) 28 OUT3 27 OUT4 26 OUT7 25 OUT8 24 OUT9 23 OUT10 22 PGND Top view ILB01594 VC4 VC3 VC2 VC1 VB1 18 FC LB8659FN 13 IN10 14 IN11 15 ZMPR 16 ZMPI 17 AFPI 19 VB1 VB2 20 IMB 21 IMA No.7899-5/16 LB8659FN, LB8659PL SGND PGND 32 VREF VC2 40 IC 1 IN1 2 IN2 3 IN3 4 IN4 5 IN5 6 IN6 7 IN7 8 IN8 9 IN9 10 39 38 37 36 35 34 33 VB2 31 30 OUT5 29 OUT6 28 OUT1 27 OUT2 26 OUT3 LB8659PL (NC) VC4 VC3 VC1 VB1 25 OUT4 24 OUT7 23 OUT8 22 OUT9 21 OUT10 11 IN10 12 IN11 13 ZMPR 14 ZMPI 15 AFPI 16 FC 17 VB1 18 IMB 19 IMA 20 PGND Top view ILB01642 No.7899-6/16 LB8659FN, LB8659PL Pin Description Pin number Pin name LB8659FN 19, 38 37 22, 35 44 20 21 30 29 28 27 32 31 26 25 24 23 3 4 5 6 7 8 9 10 11 13 14 43 39 40 41 42 18 2 1 15 16 17 LB8659PL 17, 34 33 20, 32 40 18 19 28 27 26 25 30 29 24 23 22 21 2 3 4 5 6 7 8 9 10 11 12 39 35 36 37 38 16 1 13 14 15 VB1 VB2 PGND SGND IMB IMA OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 OUT9 OUT10 IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 VREF VC1 VC2 VC3 VC4 FC IC ICH ZMPR ZMPI AFPI Battery power supply ditto Power system GND Control system GND OUT9 and OUT10 current detection feedback pin OUT9 and OUT10 current detection pin Motor drive output ditto ditto ditto ditto ditto ditto ditto ditto ditto Control signal input ditto ditto ditto ditto ditto ditto ditto ditto ditto ditto Reference voltage output Constant-voltage setting reference input ditto ditto ditto Phase compensation pin Constant-current setting reference input Constant-current setting switching output Photo sensor drive output ditto ditto Description VB1 Protection diode Upper side VB2 Lower side PGND SGND No.7899-7/16 LB8659FN, LB8659PL Block Diagram No.7899-8/16 LB8659FN, LB8659PL Truth Table Input Output ZM ZM PI AF PI L ICH VREF (*2) IC pin discharge on Stand-by off 2→1 Constant voltage Constant voltage Constant voltage Constant current 1→2 off L H L L L H H L L H L on L on off 4→3 3→4 off off Normal rotation H L H L Reverse rotation H H L L H H L H L H L L H H L H L H L H Any of IN1 to IN10 is “H”. L L L H H L L H H L H L 1.0V (*1) VCM: Voice Coil Motor (*2) Applies to LB8659FN only. L off on Brake off 8→7 7→8 off off Close Open Regeneration off PR on Mode Application IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 OUT9 OUT10 PR L L L H H L L H L H L L H H L H L H L L L L L L L L L L H H L - Focus Stepping Motor Zoom DCMotor Exposure VCM(*1) Shutter VCM(*1) No.7899-9/16 LB8659FN, LB8659PL Internal Equivalent Circuit Diagram (Pin number in the figure applies to LB8659FN) Pin number Pin name LB8659FN 3 4 5 6 7 8 9 10 11 13 LB8659PL 2 3 4 5 6 7 8 9 10 11 IN1 IN2 IN3 IN4 IN5 IN6 IN8 IN9 IN10 Internal equivalent circuit diagram VB1 65kΩ 3 13 80kΩ 10kΩ 10kΩ SGND ILB01643 14 12 IN11 65kΩ VB1 65kΩ 14 80kΩ 26kΩ SGND IN7 ILB01644 39 40 41 42 35 36 37 38 VC1 VC2 VC3 VC4 VB1, 2 300Ω 39 40 41 42 15kΩ SGND 43 39 VREF PGND VB1 ILB01645 43 10kΩ 10kΩ SGND ILB01646 Continued on next page. No.7899-10/16 LB8659FN, LB8659PL Continued from preceding page. Pin number Pin name LB8659FN 2 LB8659PL 1 IC Internal equivalent circuit diagram VB1 3kΩ 300Ω 2 SGND 18 16 FC PGND ILB01647 VB1 30kΩ 300Ω 200Ω 1k Ω PGND SGND 18 20 21 18 19 IMB IMA ILB01648 400Ω 23 24 300Ω 10kΩ 10kΩ 400Ω VB1 PGND 21 20 ILB01649 Continued on next page. No.7899-11/16 LB8659FN, LB8659PL Continued from preceding page. Pin number Pin name LB8659FN 24 23 LB8659PL 22 21 OUT9 OUT10 Internal equivalent circuit diagram VB1 400Ω 23 24 10kΩ PGND 21 ILB01650 30 29 28 27 32 31 26 25 28 27 26 25 30 29 24 23 OUT1 OUT2 OUT4 OUT5 OUT6 OUT7 OUT8 VB1, 2 1k Ω OUT3 25 30kΩ 32 10kΩ 7.5kΩ PGND ILB01651 1 - ICH VB1 1 50kΩ PGND 15 16 17 13 14 15 ZMPR ZMPI AFPI ILB01652 15 16 17 50kΩ SGND ILB01653 No.7899-12/16 LB8659FN, LB8659PL Application Design Notes (1) Constant-voltage setting for OUT1 to OUT8 “H” output voltage for OUT1 and OUT2 can be set by the VC1 pin input voltage. The setting formula is as follows: (OUT1/OUT2 output voltage) = (VC1 input voltage) ×5.23 Correspondingly, OUT3 and OUT4 can be set by VC2, OUT5 and OUT6 can be set by VC3, and OUT7 and OUT8 can be set by VC4. The setting formula is as follows: (OUT3/OUT4 output voltage) = (VC2 input voltage) ×5.23 (OUT5/OUT6 output voltage) = (VC3 input voltage) ×5.23 (OUT7/OUT8 output voltage) = (VC4 input voltage) ×5.23 In addition, if the right side setting of the above formula exceeds the supply voltage (VB), the output voltage is saturated. (2) Output pin oscillation prevention capacitor for OUT1 to OUT8 constant-voltage control For constant-voltage control of OUT1 to OUT8, a capacitor must be placed between OUT pins in order to prevent oscillation. Test capacitor values between 0.01µF to 0.1µF and choose a value that does not cause output oscillation problems. However, for the saturated drive, no oscillation prevention capacitor is necessary. (3) Constant-current setting of OUT9 and OUT10 Constant-current setting between OUT9 and OUT10 depends on the IC pin input voltage and IMA/IMB pin connection resistance (current detection resistor). The IMA pin is connected to the GND side of H-bridge and the IMB pin is connected to the negative input of constant-current control amplifier. The IMA pin and the IMB pin are short circuited on the PWB to be used. (Short circuit near the current detection resistor is recommended.) As shown in the block diagram, the output current is controlled so that the IC pin input voltage can be equal to the voltage generated on the current detection resistor, which is connected between IMA (IMB) and GND. The formula for output current is as follows: (Output current) = (IC input pin voltage) ÷ (current detection resistance) In addition, since the constant-current control block is connected to PGND inside the IC, when the voltage is supplied to the IC pin with partial resistance, GND side of the resistor must be connected to PGND. (4) ICH pin [Applied to LB8659FN only] For the application when current is switched between shutter “Close” and “Open”, the ICH pin is used. The ICH pin is changed to “L” only in “Open” mode (refer to the Truth table). This allows the current for shutter “Open” to be set (switched) lower than the current for shutter “Close”. The IC pin input voltage is switched by the combined resistance value which is obtained from resistance connected to the IC pin (2 resistors between VREF and GND) and a resistor connected to the ICH pin. (5) Fast charge/discharge circuit for the FC pin In order to support high speed shutter control (sequential shutter), a built-in fast charge/fast discharge circuit is implemented in the shutter control block (OUT9 and OUT10). No.7899-13/16 LB8659FN, LB8659PL (6) Constant-current rising offset function IC pin voltage Rising offset VB1 is high. (Without IC capacitor) VB1 is low. (Without IC capacitor) Coil current Rising offset coil current IC discharging Shutter “Close” operating ILB01655 The rising waveform of the coil current can be offset by having the external CR network give a slope to the rising waveform of the voltage input to the IC pin and setting a greater coil time constant to make the slope more gradual. This ensures stable shutter operation under severe power voltage fluctuations. Note : When offsetting the rising waveform of the coil current using the IC pin, assume the VB1 voltage that could be obtained in the absence of the capacitor to the IC pin as the supposed minimum voltage and observe and confirm the rising waveform of the coil current that flows at that voltage, then determine the capacitance of the capacitor so as to yield a time constant value that is greater than the one that could produce the waveform generated at the supposed minimum voltage. The rising waveform offsetting capacitor is unnecessary if the power voltage supplied is stable or in similar cases in which the rising waveform offsetting function is not required. (7) FC pin phase compensation capacitor The capacitor connected to the FC pin is used for phase compensation of constant-current control between OUT9 and OUT10. Test capacitor values between 0.0015µF to 0.033µF and choose a value that does not cause an output oscillation problems. (In particular, when a large-inductance coil is used, it is necessary to provide a margin to a capacity value.) Moreover, since the constant-current control block is connected to PGND inside the IC, GND side of the FC pin capacitor must be connected to PGND. (Cautions for FC pin capacitor setting) For the capacitor value setting, set the value by which the output does not oscillate, observing an output voltage waveform. In circuit, the FC pin is connected to the output part of the constant-current control amplifier, and an output transistor drives because the potential of the FC pin rises. That is, since the initial state of the FC pin influences the output-drive timing, the potential of the FC pin is discharged (fast discharge circuit) inside the IC to a certain level before the shutter is ON, and the potential of the FC pin is charged (fast charge circuit) inside the IC to a certain level when a shutter is ON, so that the state of the FC pin during shutter driving can always be constant on this IC. This allows constant input/output delay time. However, since the time involved in charge/discharge in the above-mentioned circuit will be long if the capacitor value setting is too large, the amount of variation in charge/discharge delay time will increase with the variation of capacitor value (absolute value variation and temperature characteristic). Moreover, as another negative effect of setting a large value to the capacitor, it is considered that the rising inclination of coil current is moderate. Although the rising inclination of coil current originally depends on L component of the coil, if a large value is set to a capacitor and the capacitor time constant increases, the rising inclination of coil current depends on the value of the capacitor. For the reasons mentioned above, especially in the applications in which a high-speed shutter drive is required, both the value by which output does not oscillate and as small a value as possible (0.0015µF to 0.033µF) must be set to a capacitor which is connected to the FC pin. No.7899-14/16 LB8659FN, LB8659PL (8) Shutter drive “Regeneration” mode The “Regeneration” (IN9/IN10 = H/H) in shutter mode is used to slow the coil current decay. This mode makes coil current regenerative (Slow-Decay) within the output H-bridge by switching from “Close” (IN9/IN10 = L/H). (Refer to the following figure.) (1) “Close” (IN9/IN10 = L/H) (2) “Regeneration” (IN9/IN10 = H/H) OUT10 OUT9 OUT10 OUT9 ILB01656 When shutter control is switched from “Stand-by” to “Close” (“Open”), the current rises to the target constant-current value from the state of output current 0 (zero). However, the output of the constant-current control amplifier inside the IC is in the full drive state during the above-mentioned “Regeneration” state. Therefore, when it is switched from “Regeneration” to “Close” (“Open”), the current falls to the target constant-current value from the state of full drive output. For that reason, to switch the shutter drive to “Close” (“Open”) from “Regeneration” by constant-current control, it must be switched to “Stand-by” once before switching to “Close” (“Open”). The example of drive sequence is shown in the figure below. Regeneration Stand-by Stand-by Open Close Open IN10 IN9 ILB01657 (9) GND wiring and each power supply line capacitor Connect PGND (2 places) and SGND near the IC and insert a capacitor to the part nearest the power supply pin for each power supply. No.7899-15/16 LB8659FN, LB8659PL Specifications of any and all SANYO Semiconductor 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. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or 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 products (including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 permission 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 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. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of June, 2004. Specifications and information herein are subject to change without notice. PS No.7899-16/16