Ordering number : EN7896C LB8652T Monolithic Digital IC Driver for Digital Still Cameras Features • Actuator driver for digital cameras embedded in one chip. (Not supported synchronous driving.) (1) Saturation output for AF - Stepping motor (2 phase, 1-2 phase excitation possible) (2) Constant current control output for SH • Quick charge and quick discharge circuitry allow the stabilization of response speeds. • Input port 1 allows shutter close control. • When shutter opening control, open-loop constant current control is possible. (3) Saturation output for AE - VCM or stepping motor can be used. (2 phase, 1-2 phase excitation possible) (4) ZOOM (lens barrel) - Constant voltage DC motor driver (Normal evolution/Reverse evolution/Brake) Or saturation output stepping motor (2 phase, 1-2 phase excitation possible) • Applications of various actuators possible. SH AE AF ZOOM VCM VCM STM DCM Application Example 2 VCM VCM STM STM Application Example 3 VCM STM STM DCM Application Example 1 • No standby current consumption (or zero). • 2 system power source (VB : for DC motor, VCC : others) • Low saturation output • Built-in thermal protection circuitry • Small, thin package Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum Power Source Voltage Symbol Conditions Ratings Unit VB max VB 10.5 VCC max VCC 10.5 Maximum Applied Input Voltage VIN max MD1 to 3, IN1 to 4 10.5 V Maximum Applied Output Voltage VOUT max OUT1 to 8 10.5 V V 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. D2006 SY IM B8-8570 No.7896-1/8 LB8652T Continued from preceding page. Parameter Symbol Conditions Ratings Unit Maximum Output Current 1 IO max1 OUT1 400 mA Maximum Output Current 2 IO max2 OUT2, 3, OUT5 to 7 600 mA Maximum Output Current 3 IO max3 OUT4, OUT8 800 mA Allowable Power Dissipation Pd max1 Substrate mounting (*1) 800 mW Operating Temperature Topr1 Storage Temperature Tstg -20 to +80 °C -55 to +150 °C (*1) Standard mounting substrate : 76.1mm×114.3mm×1.6mm glass epoxy resin Allowable Operating Range at Ta = 25°C Parameter Source Voltage Range Symbol VB Conditions Ratings (*2) Unit 2.0 to 10 VCC V 2.0 to 10 Input Pin High Level Voltage VINH MD1 to 3, IN1 to 4 1.8 to 10 V Input Pin Low Level Voltage VINL MD1 to 3, IN1 to 4 -0.3 to 0.4 V Constant Voltage Setting Input Range VOC VC 0.8 to 2.0 V (*2) No restriction on priority among applied voltages of VB (Battery power source), VCC (step-up power source) and VIN (CPU power source). Example1 : VB = 3.3V, VCC = 4.0V, VIN = 5.0V Example2 : VB = 3.3V, VIN = 5.0V Electrical Characteristics at Ta = 25°C, VB = VCC = 3V, Rf = 1Ω Parameter Symbol Ratings Conditions min typ Unit max Standby Current Consumption ICC0 VB = VCC = 8.0V MD1 to 3, IN1 to 4 = L 0.1 5.0 VCC Operating Current Consumption ICC1 AF mode IN1, 3 = H (2 phase excitation) 24 32 ICC2 AF mode IN3 = H (1 phase excitation) 14 21 ICC3 SH mode IN1 = L 42 54 ICC4 SH mode IN1 = H RILM = 2kΩ 18 24 VB Operating Current Consumption IB DC-ZOOM mode IN3 = H Reference Voltage Vref Iref = -1mA Reference Voltage start-up time Tr Input Pin Current Overheat Protection Operation µA mA 7 15 1.8 1.86 V Design guaranteed 0.5 2.0 µs IIN VIN = 5.0V 70 90 µA THD Design guaranteed (*3) 160 180 200 °C Temperature 1.74 mA [Stepping motor driver for AF] (OUT2 to 3, OUT6 to 7) Output Saturation Voltage 1 VSAT1 VCC = 3.3V, IO = 0.2A (upper and lower) 0.15 0.25 0.40 V VSAT2 VCC = 3.3V, IO = 0.2A (upper and lower) 0.15 0.25 0.40 V Output Constant Current 1 IO1 OUT2→OUT1 VCC = 3.0 to 3.7V, Rf = 1Ω 194 206 218 Output Constant Current 2 IO2 OUT1→OUT2 VCC = 3.3V RILM = 1.6kΩ 130 160 190 Output Saturation Voltage 3 VSAT3 OUT2→OUT1 VCC = 3.3V, 0.15 0.25 0.40 V 2.38 2.5 2.62 V [AE driver] (OUT5 to 6) Output Saturation Voltage 2 [SH driver] (OUT1 to 2) IO = 0.2A (upper and lower) mA [DC motor driver for ZOOM] (OUT4 to 8) Output Constant Voltage VO VB = 3.0 to 3.7V, VC = 1V Output Saturation Voltage 4 VSAT4 VB = 3.3V, IO = 0.3A (upper and lower) 0.2 0.3 0.45 V Output Saturation Voltage 5 VSAT5 VB = 3.3V, IO = 0.3A (upper) 0.1 0.18 0.25 V (*3) For the characteristic within the guaranteed temperature range, shipping check is performed at Ta = 25°C. For all temperature range, it is design guaranteed. No.7896-2/8 LB8652T Package Dimensions unit : mm (typ) 3260A Allowable Power Dissipation, Pd max - W 0.5 6.4 13 4.4 24 12 1 0.5 Pd max - Ta 1.0 6.5 0.15 0.22 0.08 1.2max (1.0) (0.5) SANYO : TSSOP24(225mil) Mounted on a specified board: 76.1mm×114.3mm×1.6mm glass epoxy 0.8 0.6 0.45 0.4 0.2 0 -20 0 20 40 60 Ambient Temperature, Ta -°C 80 100 ILB01754 Pin Assignment VCC 1 24 OUT1 ILM 2 23 GND MD1 3 22 RFG MD2 4 21 OUT2 MD3 5 20 OUT3 IN1 6 IN2 7 18 OUT6 IN3 8 17 OUT7 IN4 9 16 OUT4 VREF 10 15 OUT8 LB8652T 19 OUT5 FC 11 14 GND VC 12 13 VB Top view (Note) Both 2 pins are connected to GND pin. No.7896-3/8 LB8652T True Value Table Input Output Mode MD1 MD2 MD3 IN1 IN2 IN3 IN4 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 L L L L L L L - - - - - - - - L * * * L H - - - - - - SH H * * * H L - - - - - - (VCM) L L H H H L H L H L H H L L H Standby (0µA) L L - - - - - - L H - - L H - - H L - - H L - - AE H H - - - - - - (VCM) L L - - - - - - L H - - L H - - H L - - H L - - H H - - - - - - or (STEP3) * * L L - - - - - - - - * * L H - - - L - - - H ZOOM * * H L - - - H - - - L (DC) H H - - H * * - - - H - L L - - - - - - L H - L H - - H L - H L - - - H H - - - - - - AF - - - (STEP1) L L - - - L H - - - L H - H L - - - H L - H H - - - - - - L L - - - - - - L H - - L H - - H L - - H L - H H - - - - - - ZOOM L L - - - - - - L H - - - - L H L H L - - - - H H H - - - - - - L H L * * * * - - - - - - - - H H H * * * * - - - - - - - - (STEP2) Ignore ( * ) : Don’t care. ( - ) : Output OFF (H) : Constant voltage output is 2.5 time the VC pin applied voltage. (L) : Constant current output is (IC pin applied voltage÷RFG resistor current). Note : When the current flows from OUT1 to OUT2, easy constant current output function is ON. The output current is controlled by the resistance value connected between the ILM pin and GND. No.7896-4/8 LB8652T Block Diagram SH/VCM OUT1 VCC VB OUT2 Vref Reference voltage heat protection circuit VC VCC OUT3 MD1 MD2 MD3 CPU VB Logic unit VC IN1 Constant current control RFG Constant voltage output (brake) IN2 RFG VCC VC Quick charge circuitry for SH OUT7 Quick discharge circuitry for SH IN3 IN4 AF/ST GND OUT4 Zoom/DC OUT8 FC ILM OUT5 OUT6 GND M AE/VCM Application Circuit Diagram [Application Example 1] AF/STM ZOOM/DCM M SH/VCM OUT1 OUT2 AE/VCM OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 VCC VB VC 400mA 400mA 400mA 700mA 400mA 400mA 400mA 700mA Constant current generation circuit RFG ILM GND GND Internal reference No.7896-5/8 LB8652T [Application Example 2] AF/STM ZOOM/STM AE/VCM SH/VCM OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 VCC VB VCC VC 400mA 400mA 400mA 700mA 400mA 400mA 400mA 700mA Constant current generation circuit RFG ILM GND GND Internal reference [Application Example 3] AF/STM ZOOM/DCM AE/STM M SH/VCM OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 VCC VB VC 400mA 400mA 400mA 700mA 400mA 400mA 400mA Constant current generation circuit RFG ILM GND GND Internal reference No.7896-6/8 LB8652T Points to Take into Consideration When Designing (1) For shutter control Constant current setting (RFG, OUT1, OUT2) The constant current when flowing the current from OUT2 to OUT1 can be specified by a resistor connected between RFG and GND. The reference voltage is generated in the IC and it is approximately 0.21V. The voltage is controlled in such a way so that the voltage generated at the resistor used for current detection connected between RFG and GND would be equal to this voltage. The formula for calculating the output current is as given below. In addition, as a fundamental setting, it is designed so that the approx. 200mA would flow through the coil when RFG resistor is connected with 1Ω. (Current flows from OUT2 to OUT1) = 0.21V÷(Resistance between RFG and GND+0.05Ω) - (Drive current of output Tr) This 0.05Ω 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. Also, the drive current of output Tr is equal to 1/hfe (a 80th to 200th part approx.) of the coil current. The constant current flowed from OUT2 to OUT1 is more accurate than that flowed from OUT1 to OUT2. Therefore make sure to use this method for shutter closing drive. (2) For shutter control Open-loop constant current control setting (ILM, OUT1, OUT2) In order to prevent the high-current flowing when shutter opening, the output current control circuit is implemented for current flowing from OUT1 to OUT2. The constant current when flowing the current from OUT1 to OUT2 can be specified by a resistor connected between ILM and GND. The formula for calculating the output current is as given below. (Current flows from OUT1 to OUT2) = 1.36V÷(Resistance between ILM and GND) ×200 approx. Due to open-loop control by which feedback signals are not sent, the accuracy of constant current is relatively inferior. It is used for shutter opening drive. (3) Phase compensation capacitor (FC) See and check the capacitor value for FC pin 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. (4) Constant voltage control Oscillation-stopping capacitor (OUT4, OUT8) When controlling the constant voltages, it is necessary to place capacitors between the OUT pins to stop oscillation. See and check the capacitance 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 capacitors. (5) GND wiring and power line capacitors : (GND×2, VCC, VB) Connect GND (2 places) near the IC, and place the capacitors as close as possible to each of the power pins. No.7896-7/8 LB8652T 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 December, 2006. Specifications and information herein are subject to change without notice. PS No.7896-8/8