Datasheet System Lens Drivers μ-step System Lens Driver for Digital Still Cameras BU24020GU ●General Description BU24020GU is a system Lens Driver that uses μ-step driving to make the configuration of the sophisticated, high precision and low noise lens driver system possible. This IC has a built-in driver for both DC motor and voice coil motor and a μ-step controller that decreases CPU power. Therefore, multifunctional lens can be applied. ●Key Specifications Digital Power Supply Voltage: Driver Power Supply Voltage: Output Current (1ch-4ch): Input Clock Frequency: FET ON Resistance (1ch-4ch): Operating Temperature Range: ●Features Built-in 4channels Driver block. 1ch-4ch: Voltage control type H-bridge (Adaptable to STM 2systems) Built-in 2 channels PI driving circuit Built-in PLL circuit ●Package VCSP85H2 2.7V to 3.6V 2.7V to 5.5V ±500mA(Max) 1MHz to 28MHz 1.5Ω(Typ) -20℃ to +85℃ 2.60mm x 2.60mm x 1.00mm ●Applications Digital still cameras ●Typical Application Circuit Example1 DVDD PIOUT2 PIOUT1 Photo interrupter MVCC12 MVCC34 DVSS MGND12 MGND34 OUT1A OUT3A M OUT3B 1ch Driver 3ch Driver OUT1B M Logic OUT2A OUT4A OUT2B STATE1 STATE2 SOUT FCLK CSB SCLK SDATA TEST OUT4B 2ch Driver 4ch Driver Main Host ○Product structure：Silicon monolithic integrated circuit .www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・14・001 ○This product is not designed for protection against radioactive rays 1/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Pin Configuration (Bottom view) E MGND34 OUT4B OUT4A MVCC34 OUT3A D MGND12 DVSS SCLK PIOUT2 OUT3B C OUT1B STATE1 TEST SDATA DVDD B PIOUT1 STATE2 CSB SOUT A OUT1A MVCC12 OUT2A OUT2B FCLK 2 3 4 5 1 ●Pin Description Land Matrix No. Pin Name Power Supply Land Matrix No. Pin Name Power Supply C5 DVDD - Digital power supply A2 MVCC12 - 1ch, 2ch Driver power supply D2 DVSS - ground D1 MGND12 - 1ch, 2ch Driver ground A5 FCLK DVDD FCLK logic input A1 OUT1A MVCC12 1ch Driver A output B4 CSB DVDD CSB logic input C1 OUT1B MVCC12 1ch Driver B output D3 SCLK DVDD SCLK logic input A3 OUT2A MVCC12 2ch Driver A output C4 SDATA DVDD SDATA logic input A4 OUT2B MVCC12 2ch Driver B output B5 SOUT DVDD SOUT logic output E4 MVCC34 - 3ch, 4ch Driver power supply C2 STATE1 DVDD STATE1 logic input/output E1 MGND34 - 3ch, 4ch Driver ground B3 STATE2 DVDD STATE2 logic input/output E5 OUT3A MVCC34 3ch Driver A output C3 TEST DVDD TEST logic input D5 OUT3B MVCC34 3ch Driver B output B1 PIOUT1 DVDD PI driving output 1 E3 OUT4A MVCC34 4ch Driver A output D4 PIOUT2 DVDD PI driving output 2 E2 OUT4B MVCC34 4ch Driver B output www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 Function 2/17 Function TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Block Diagram www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 3/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Description of Blocks Stepping Motor Driver (1ch-4ch Driver) Built-in stepping motor driver of PWM driving type. Maximum 2 stepping motors can be driven independently. Built-in voltage feedback circuit of D-class type. 3ch/4ch drivers can also drive independently for DC motor or voice coil motor. (1) Control It corresponds to both Clock IN and Autonomous control. (ⅰ)Clock IN Control Set the resistors for the stepping motor control. The stepping motor is rotated and synchronized with the input clock in the STATE pin. It is possible to select the mode of stepping motor control from μ-step, 1-2 phase excitation, 2 phase excitation and the number of edge for electrical angle cycle from 4, 8, 32, 64, 128, 256, 512 or 1024. ON/OFF Direction Torque Host 3 CSB SCLK SDATA SIF (Speed･Amount) STM Control Logic SIN wave Control Logic PWM Control Logic H.B. STM H.B. STATE (ⅱ)Autonomous Control The stepping motor is rotated by setting the resistors for the stepping motor control. The state of rotation command (executing:1, finished:0), Cache resistor and motor position are the output from the serial output (SOUT pin). Also, the signal (MO output) which is synchronized with the motor rotation is the output from STATE pin. It is possible to select the mode of stepping motor control from μ-step (1024 portion), 1-2 phase excitation and 2 phase excitation. Built-in Cache resistors. Cache resistors enable the setting of subsequent process while the motor is in operation. Through these registers, operations are done continuously. ON/OFF Direction Speed Torque Amount Host 3 CSB SCLK SDATA State SOUT Position STATE SIF H.B. STM Control Logic SIN wave Control Logic PWM Control Logic STM H.B. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 4/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Absolute Maximum Ratings (Ta=25℃) Parameter Symbol Limit Unit Remark DVDD -0.3 to +4.5 V MVCC -0.3 to +7.0 V Input Voltage VIN -0.3 to supply voltage+0.3 V Input / Output Current *1 ±500 mA MVCC12, MVCC34 IIN +50 mA by PIOUT pin Power Supply Voltage MVCC12, MVCC34 Storage Temperature Range TSTG -55 to +125 ℃ Operating Temperature Range TOPE -20 to +85 ℃ PD 800 mW Symbol Limit Unit Digital Power Supply Voltage DVDD 2.7 to 3.6 V DVDD≦MVCC Driver Power Supply Voltage MVCC 2.7 to 5.5 V MVCC12, MVCC34 Clock Operating Frequency FCLK 1 to 28 MHz Permissible Dissipation *2 *1 *2 Must not exceed PD. To use at a temperature higher than Ta=25 °C, derate 8mW per 1 °C (At mounting 50mm x 58mm x 1.75mm glass epoxy board.) ●Recommended Operating Rating (Ta=25℃) Parameter www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 5/17 Remark Reference clock TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Electrical Characteristics (Unless otherwise specified, Ta=25°C, DVDD=3.0V, MVCC=5.0V, DVSS=MGND=0.0V) Limit Parameter Symbol Unit MIN TYP MAX Conditions <Current Consumption> Quiescence Operation CMD_RS=0 (DVDD) ISSD - 50 95 μA (MVCC) ISSM - 0 10 μA CMD_RS=1 FCLK=24MHz mA CLK_DIV setting : 0h No load (DVDD) IDDD - 5 10 Low-level Input Voltage VIL DVSS - 0.3DVDD V High-level Input Voltage VIH 0.7DVDD - DVDD V Low-level Input Current IIL 0 - 10 μA VIL=DVSS High-level Input Current IIH 0 - 10 μA VIH=DVDD Low-level Output Voltage VOL DVSS - 0.2DVDD V IOL=1.0mA High-level Output Voltage VOH 0.8DVDD - DVDD V IOH=1.0mA PIVO - 0.15 0.5 V IIH=30mA ON-resistance Ron - 1.5 2.0 Ω IO=±100mA (the sum of high and low sides) OFF-leak Current IOZ -10 0 +10 Average Voltage Accuracy between different Output Pins Vdiff -5 - +5 <Logic Block> <PI Driving Circuit> Output Voltage <Voltage Driver Block 1ch-4ch> www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 6/17 μA Output Hiz setting % Vdiff setting : 2Bh TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Typical Performance Curves (Unless otherwise specified, Ta=25°C, DVDD=3.0V, MVCC=5.0V, DVSS=MGND=0.0V) 80 80 Static Current ［uA］ 100 Static Current ［uA］ 100 60 40 60 40 20 20 0 0 2.0 2.5 3.0 3.5 -50 4.0 -25 10 10 8 8 6 4 100 4 2 0 0 5.0 -50 6.0 -25 0 25 50 75 100 Am bient Tem perature ［℃］ MVCC ［ V］ Figure 3. MVCC Static Current Voltage Dependency www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 75 6 2 4.0 50 Figure 2. DVDD Static Current Temperature Dependency Static Current ［uA］ Static Current ［uA］ Figure 1. DVDD Static Current Voltage Dependency 3.0 25 Ambient Temperature ［℃］ DVDD ［V］ 2.0 0 Figure 4. MVCC Static Current Temperature Dependency 7/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Typical Performance Curves (Unless otherwise specified, Ta=25°C, DVDD=3.0V, MVCC=5.0V, DVSS=MGND=0.0V) 5 5 4 4 IO=±100mA 3 Ron ［Ω］ Ron ［Ω］ IO=±100mA 2 3 2 1 1 0 0 2.0 3.0 4.0 5.0 6.0 -50 MVCC ［ V］ -25 0 25 50 75 100 Am bient Tem perature ［℃］ Figure 6. Output ON-Resistance Temperature Dependency (Voltage driver block) Figure 5. Output ON-Resistance MVCC Dependency (Voltage driver block) 5 0.20 4 3 PIOUT ［ V］ Output Voltage ［V］ 0.15 2 0.10 IIH=30mA 0.05 1 0 0.00 0 32 64 96 128 2.0 Serial s etting code 3.0 3.5 4.0 DVDD ［V］ Figure 7. Average Voltage Accuracy between different output pins (Voltage driver block) www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 2.5 Figure 8. Output Voltage DVDD Dependency (PI driving circuit) 8/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Typical Performance Curves (Unless otherwise specified, Ta=25°C, DVDD=3.0V, MVCC=5.0V, DVSS=MGND=0.0V) 1000 900 800mW Power Dissipation [mW] 800 700 600 500 400 320mW 300 200 100 85℃ 0 0 25 50 75 100 125 150 Am bient Tem perature ［℃］ Figure 9. Power Dissipation Curve www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 9/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Timing Chart (Unless otherwise specified, Ta=25°C, DVDD=3.0V) Parameter Symbol SCLK input cycle SCLK L-level input time SCLK H-level input time SDATA setup time SDATA hold time CSB H-level input time CSB setup time CSB hold time FCLK input cycle FCLK L-level input time FCLK H-level input time tSCLK tSCLKL tSCLKH tsSDATA thSDATA tCSBH tsCSB thCSB tFCLK tFCLKL tFCLKH Specification More than 100 nsec More than 50 nsec More than 50 nsec More than 50 nsec More than 50 nsec More than 380 nsec More than 50 nsec More than 50 nsec More than 36 nsec More than 18 nsec More than 18 nsec 0.7DVDD 0.3DVDD CSB tSCLK thCSB tSCLKH tsCSB tCSBH tSCLKL thCSB tsCSB 0.7DVDD 0.3DVDD SCLK tsSDATA thSDATA 0.7DVDD 0.3DVDD SDATA tFCLKL tFCLK tFCLKH 0.7DVDD 0.3DVDD FCLK (note1) FCLK is asynchronous with SCLK. (note2) Duty of FCLK, SCLK are free. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 10/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Serial interface Control commands are framed by a 16-bit serial input (MSB first) and are sent through CSB, SCLK, and SDATA pins. The 4 higher-order bits specify addresses, while the remaining 12 bits specify data. Data of every bit is sent through SDATA pin, which is retrieved during the rising edge of SCLK. Data becomes valid when CSB is Low is registered during the rising edge of CSB. Furthermore, the interface will be synchronized with the falling edges of SCLK to output the SOUT data of the 12 bits. CSB SCLK SDATA x D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Address Data x SOUT x D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Hiz Hiz ＜Register map＞ Address[3:0] Data[11:0] 15 14 13 12 11 0 0 0 0 A_Mode[1:0] 0 0 0 10 6 5 A_SEL[2:0] 4 3 2 1 0 0 0 A_different_output_voltage[6:0] 0 0 A_Cycle[5:0] 0 0 1 0 0 1 1 0 A_BEXC 0 0 1 1 1 0 0 0 A_POS[1:0] A_Cycle[13:6] 1 1 0 A_EN A_RT 0 0 1 1 A_ACT A_BUSY 0 1 0 0 0 7 0 0 1 8 0 0 0 9 1 A_BSL A_AEXC 0 0 A_ASL 0 0 A_PS A_Stop L L L L 0 0 0 B_ASL A_Pulse[9:0] B_ACT B_Mode[1:0] B_BUSY L L L B_SEL[2:0] L B_different_output_voltage[6:0] 0 0 0 0 0 0 1 0 0 1 1 0 B_BEXC 0 1 0 0 0 0 0 1 0 1 3_State_CTL[1:0] 3_PWM_Duty[6:0] 1 1 0 4_State_CTL[1:0] 4_PWM_Duty[6:0] 1 1 1 B_EN B_RT 0 1 1 0 0 1 1 1 1 0 1 1 0 0 1 1 0 0 0 0 1 1 0 1 0 0 0 1 1 1 0 1 1 0 0 B_Cycle[5:0] B_Cycle[13:6] 0 0 0 B_BSL 3_CHOP[1:0] B_POS[1:0] B_AEXC 0 0 0 4_CHOP[1:0] 0 0 B_PS B_Stop L L L L 0 0 B_CTL A_CTL B_Pulse[9:0] A_Position[9:6] 0 B_Position[9:6] 0 0 0 Edge 0 CacheM 0 0 CLK_EN 0 0 0 0 0 0 0 PI_CTL2 PI_CTL1 0 0 0 0 STB 0 0 STM_RS CMD_RS Chopping[1:0] Addresses other than those above CLK_DIV[3:0] Setting prohibited (Note1) The notations A B in the register map correspond to Ach and Bch respectively. Ach is defined as 1ch and 2ch driver, Bch as 3ch and 4ch driver, (Note2) After reset (Power ON reset), the initial condition is saved in all registers (Note3) The addresses 4’b0011, and 4’b0111 have data (ACT, BUSY, Position [9:6]), which are internal register values and output from SOUT pin. (Note4) For Mode, different output voltage, Cycle, EN, and RT registers, data that are written before the access to the Pulse register becomes valid and determines the rising edge of CSB after the access to the Pulse register. (The Mode, different output voltage, Cycle, EN, RT, and Pulse registers contain Cache registers. Any registers other than those do not contain Cache registers.) www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 11/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Application Example 1ch/2ch μ-step 3ch/4ch μ-step STM STM OIS (X) OIS (Y) 3ch PWM 4ch PWM STM DCM DCM Auto Focus Iris Zoom 1ch/2ch μ-step www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 12/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●I/O Equivalence Circuit Pin Equivalent Circuit Diagram FCLK CSB SCLK SDATA DVDD Pin Equivalent Circuit Diagram TEST (note1) DVDD DVDD P DVDD P SOUT DVDD STATE1 STATE2 DVDD DVDD DVDD DVDD P P PIOUT1 PIOUT2 OUT1A OUT1B OUT2A OUT2B DVDD P OUT3A OUT3B OUT4A OUT4B MVCC12 P P MVCC34 P P (note1) Short TEST pin to DVSS. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 13/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Operational Notes 1) Absolute maximum ratings If applied voltage, operating temperature range, or other absolute maximum ratings are exceeded, the LSI may be damaged. Do not apply voltages or temperatures that exceed the absolute maximum ratings. If you expect that any voltage or temperature could be exceeding the absolute maximum ratings, take physical safety measures such as fuses to prevent any conditions exceeding the absolute maximum ratings from being applied to the LSI. 2) GND potential The voltage of the ground pin must be the lowest voltage of all pins of the IC at all operating conditions. Ensure that no pins are at a voltage below the ground pin at any time, even during transient condition. 3) Thermal design Use a thermal design that allows for a sufficient margin by taking into account the permissible power dissipation (PD) in actual operating conditions. 4) Short circuit between pins and malfunctions Ensure that when mounting the IC on the PCB the direction and position are correct. Incorrect mounting may result in damaging the IC. Avoid nearby pins being shorted to each other especially to ground. Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment) and unintentional solder bridge deposited in between pins during assembly to name a few. 5) Operation in strong magnetic field Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction. 6) Power ON sequence To turn ON the DVDD, be sure to reset at CMD_RS register. 7) Thermal shutdown The IC incorporates a built-in thermal shutdown circuit, which is designed to turn off the IC when the internal temperature of the IC reaches a specified value. It is not designed to protect the IC from damage or guarantee its operation. Do not continue to operate the IC after this function is activated. Do not use the IC in conditions where this function will always be activated. 8) PI drive circuit The output voltage of PIOUT should not exceed the voltage of the power supply voltage DVDD. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 14/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Ordering Information B U 2 4 0 2 0 G Part Number U - Package GU : VCSP85H2 E2 Packaging and forming specification E2: Embossed tape and reel ●Marking Diagram VCSP85H2 (TOP VIEW) 1PIN MARK Part Number Marking U24020 www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 LOT Number 15/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Physical Dimension Tape and Reel Information Package Name VCSP85H2 Lot No. 2.60±0.05 1PIN MARK U24020 0.25±0.1 1.0MAX 2.60±0.05 S 0.3±0.05 0.06 S 24-φ0.30±0.05 0.05 A B A D B (φ0.15)INDEX POST C B P=0.5×4 E A 1 0.3±0.05 2 3 4 5 P=0.5×4 Tape Embossed carriertape Quantity 3,000pcs/Real Direction of feed E2 (The direction is 1pin product is at the upper left when you hold reel on the hand and you pull out the tape on the right hand) 1234 1234 Reel www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 16/17 1234 1234 1pin 1234 1234 Direction of f eed TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet BU24020GU ●Revision History Date Revision Changes 26.Sep.2012 001 New Release 18.Apr.2013 002 Update some English words, sentences, descriptions, grammar and formatting. www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 17/17 TSZ02201-0M2M0BC12020-1-2 18.Apr.2013 Rev.002 Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASSⅢ CLASSⅡb CLASSⅢ CLASSⅢ CLASSⅣ CLASSⅢ 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice - GE © 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM’s internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with ROHM representative in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable for infringement of any intellectual property rights or other damages arising from use of such information or data.: 2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the information contained in this document. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice - GE © 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM’s Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice – WE © 2014 ROHM Co., Ltd. All rights reserved. Rev.001 Datasheet BU24020GU - Web Page Buy Distribution Inventory Part Number Package Unit Quantity Minimum Package Quantity Packing Type Constitution Materials List RoHS BU24020GU VCSP85H2 3000 3000 Taping inquiry Yes