BA5826FP

1/5 Structure Product Name Device Name Features : : : : Silicon Monolithic Integrated Circuit Power Driver For Compact Disc Players BA5826FP • • • • • • • • 4-ch BTL driver Use of an HSOP28 power package can achieve downsizing of the set. Gain can be controlled by attaching an external resistance. A built-in thermal shutdown circuit installed. A built-in 3.3V regulator installed. (External PNP Tr must be installed.) A built-in general operational amplifier installed. A built-in 2.7V reset circuit installed. Using an external capacitor, the reset delay time can be changed. ABSOLUTE MAXIMUM RATINGS (Ta=25°C)] Parameter Power Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VCC Pd Topr Tstg Limits 13.5 1.7 *1 -35 to 85 -55 to 150 Unit V W °C °C *1 When mounted on the glass/epoxy board with the size: 70 mm×70 mm, the thickness: 1.6 mm, and the rate of copper foil occupancy area: 3% or less. Over Ta=25°C, derating at the rate of 13.6mW/°C. OPERATING CONDITIONS Parameter Power Supply Voltage Symbol VCC Limits 4.5 to 9 Unit V This product has not been checked for the strategic materials (or service) defined in the Foreign Exchange and Foreign Trade Control Low of Japan so that a verification work is required before exporting it. Not designed for radiation resistance. REV. A 2/5 ELECTRIC CHARACTERISTICS (Ta=25°C, Vcc=8V, VBIAS=1.65V, RL=8Ω, unless otherwise noted.) Parameter Circuit Current at no signal Output Offset Voltage Maximum Output Amplitude Closed Circuit Voltage Gain Output Offset Voltage Maximum Output Amplitude Closed Circuit Voltage Gain Mute OFF Voltage Mute ON Voltage Bias Drop Mute Threshold Voltage Output Voltage Output Load Regulation Power Supply Voltage Regulation Offset Voltage Input Bias Current High-level Output Voltage Low-level Output Voltage Output Driving Current Source Output Driving Current Sink Reset ON Threshold Voltage Reset ON Output Voltage Reset τ Threshold Voltage H Reset τ Threshold Voltage L Symbol ICC VOO1 VOM1 GVC1 VOO2 VOM2 GVC2 VMTOFF VMTON VBTHR Vreg ∆VRL ∆VVCC VOFOP IBIAS VOHOP VOLOP ISOU ISIN VTHR VRON IREST VRESTH VRESTL MIN. 6.0 -50 4.35 6.0 -50 4.3 7.0 2.0 3.13 -20 -10 -6 7.5 300 1 2.56 16.6 7.7 TYP. 10.0 5.0 8.0 4.9 8.0 0.7 3.3 0 0 500 2.7 23.7 MAX 14.0 50 10.0 50 9.0 0.5 1.2 3.47 10 35 6 300 0.3 2.84 0.5 30.8 0.4 Unit MA MV V DB mV V dB V V V V mV mV mV nA V V µA mA V V µA V V IL=100mA IL=100 to 200mA (Vcc=6 to 9V) IL=100mA Condition No load applied VBIAS=4V VBIAS=4V VBIAS=4V VBIAS=4V VBIAS=4V VBIAS=4V When Vreg drops Connected to 3.3V with the resistance of 10kΩ applied. VREST=1.5V VREST=1V OUTLINE DIMENSIONS, SYMBOLS (MAX 18.85 include BURR) Product Number (UNIT:mm) REV. A 3/5 APPLICATION CIRCUIT DIAGRAM 15 GND 16 17 LEVEL SHIFT CH2 TRACKING COIL LEVEL SHIFT 12 13 14 SLED MOTOR CH3 18 19 13.3k 13.3k 10k 20 10k VCC T.S.D. REGULATOR,BIAS drop 21 VCC=8V MUTE VCC 22 GND 7 8 9 10 11 3.3V 6 24 23 5 M RESET 26 FOCUS COIL LEVEL SHIFT CH4 SPINDLE MOTOR CH1: SPINDLE CH2: SLED CH3: TRACKING CH4: FOCUS T. S. D.: Thermal shutdown Resistance unit: [Ω] 13.3k 10k 25 100 13.3k 27 LEVEL SHIFT CH1 2 3 4 GND 28 FOCUS BIAS 1 TRACKING SLED M SERVO PRE AMP PIN NUMBERS, PIN NAMES No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin Name VO1(-) VO1(+) IN1 RESET REGB REGOUT MUTE GND IN2’ IN2 VO2(+) VO2(-) GND OPOUT Description Driver CH1 negative output Driver CH1 positive output CH1 input terminal Reset output Regulator external Tr base connection terminal Regulator output Driver mute control terminal PREGND, REGGND CH2 input terminal for gain control CH2 input terminal Driver CH2 positive output Driver CH2 negative output CH2,3 POWGND Operational amplifier output No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name OPIN RESETτ VO3(-) VO3(+) IN3 IN3’ VCC VCC BIAS IN4’ IN4 VO4(+) VO4(-) GND Description Operational amplifier inverted input Reset τ terminal Driver CH3 negative output Driver CH3 positive output CH3 input terminal CH3 input terminal for gain control Power supply input Power supply input Bias input CH4 input terminal for gain control CH4 input terminal Driver CH4 positive output Driver CH4 negative output CH1,4 POWGND Note: The positive or negative polarity of driver outputs is determined by the input polarity. When the signal H is applied to the input pin, the negative output pin outputs L and the positive output pin outputs H. REV. A SPINDLE 4/5 CAUTIONS ON USE (1) Relationship between the mute function and the reset output Driver Mute Function Reset output Operation Regulator voltage ‘H’→‘L' drop ON in all cases Bias voltage drop ‘H’→‘L’ Thermal shutdown ‘H’→‘L’ Mute (pin 7) Constant [Regulator Voltage Drop] When the regulator voltage drops to 2.7V (typ.) or less, the reset output will become ‘L’ while the mute function will turn ON and, when the voltage recovers to 2.9V (typ.) or above, the reset output will become ‘H’ while the mute function will turn OFF. [Bias Drop] When the bias terminal (pin 23) voltage has dropped to 0.7V (typ.) or less, the mute function will turn ON while the reset output will become ‘L’. Under conditions of normal use, it should be set to 1.2V or above. [Thermal Shutdown] When the chip temperature has reached to 175°C (typ.) or above, the mute function will turn ON while the reset output will become ‘L’. Ten the chip temperature has dropped to 150°C (typ.) or less, the mute function will turn OFF while the reset output will become ‘H’. [Mute] When the mute terminal (pin 7) voltage has set to open or dropped to 0.5V (typ.) or less, the mute function will turn ON while the reset output will not change. About reset τ terminal Inserting a capacitor between the reset τ terminal (pin 16) and GND can set the delay time for the reset output. The delay time t [sec] can be expressed by the following equation, where C[F] is a capacitance of the capacitor to be connected; t=CV/I When V=1.14[V], I=23.7[µA ] (typ.) and the capacitor with the capacitance of 4.7 µF is connected, the delay time will become approximately 220msec. Thermal shutdown (TSD), mute ON, bias terminal voltage drop, or regulator voltage drop will activate the mute function, where only the driver part can be muted. While muting, the voltage at the output terminal will equal to the internal bias voltage (approximately (VCC-VF) / 2). The capacitor installed between the regulator output (pin 6) and GND also serves as an anti-oscillation capacitor and therefore, it is required to have high performance in the temperature characteristics. While the regulator is not in use, the regulator output terminal (pin 6) must be shorted to VCC and the regulator external Tr base connection terminal (pin 5) must be open. The radiating FIN must be connected to the external GND. Short-circuits between output pin-VCC, output pin-GND, or output terminals (load short) must be avoided. Make sure that the ICs are installed on the board in proper directions. Mounting the ICs in improper directions may damage them or produce smoke. About absolute maximum ratings Exceeding the absolute maximum ratings, such as the applied voltage or the operating temperature range, may cause permanent device damage. As these cases cannot be limited to the broken short mode or the open mode, if a special mode where the absolute maximum ratings may be exceeded is assumed, it is recommended to take mechanical safety measures such as attaching fuses. About power supply lines As a measure against the back current regenerated by a counter electromotive force of the motor, a capacitor to be used as a regenerated-current path can be installed between the power supply and GND and its capacitance value should be determined after careful check that any problems, for example, a leak capacitance of the electrolytic capacitor at low temperature, are not found in various characteristics. About GND potential The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states. About thermal design With consideration of the power dissipation (Pd) under conditions of actual use, a thermal design (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) REV. A 5/5 provided with an enough margin should be done. (12) About operations in a strong electric field When used in a strong electric field, note that a malfunction may occur. (13) ASO When using this IC, the output Tr. must be set not to exceed the values specified in the absolute maximum ratings and ASO. (14) Thermal shutdown circuit This IC incorporates a thermal shutdown circuit (TSD circuit). When the chip temperature reaches the value shown below, the coil output to the motor will be set to open. The thermal shutdown circuit is designed only to shut off the IC from a thermal runaway and not intended to protect or guarantee the entire IC functions. Therefore, users cannot assume that the TSD circuit once activated can be used continuously in the subsequent operations. TSD ON Temperature [°C] (typ.) 175 Hysteresis Temperature [°C] (typ.) 25 (15) About earth wiring patterns When a small signal GND and a large current GND are provided, it is recommended that the large current GND pattern and the small signal GND pattern should be separated and grounded at a single point of the reference point of the set in order to prevent the voltage of the small signal GND from being affected by a voltage change caused by the resistance of the pattern wiring and the large current. Make sure that the GND wiring patterns of the external components will not change, too. (16) This IC is a monolithic IC which has a P+ isolations and P substrate to isolate elements each other. This P layer and an N layer in each element form a PN junction to construct various parasitic elements. Due to the IC structure, the parasitic elements are inevitably created by the potential relationship. Activation of the parasitic elements can cause interference between circuits and may result in a malfunction or, consequently, a fatal damage. Therefore, make sure that the IC must not be used under conditions that may activate the parasitic elements, for example, applying the lower voltage than the ground level (GND, P substrate) to the input terminals. Note that, while not applying the power supply voltage to the IC, any voltage must not be applied to the input terminals. In addition, do not applying the voltage to input terminals without applying the power supply voltage to the IC. Also while applying the power supply voltage, each input terminal must be the power supply voltage or less; or within the guaranteed values in the electric characteristics. REV. A Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact your nearest sales office. ROHM Customer Support System www.rohm.com Copyright © 2007 ROHM CO.,LTD. THE AMERICAS / EUPOPE / ASIA / JAPAN Contact us : webmaster@ rohm.co. jp 21, Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan TEL : +81-75-311-2121 FAX : +81-75-315-0172 Appendix1-Rev2.0