LB1868M_09

Ordering number : EN6203A Monolithic Digital IC LB1868M Overview 2-phase Brushless Fan Motor Driver The LB1868M is a 2-phase unipolar brushless motor driver. With only a few peripheral parts, lockup protection and automatic recovery can be implemented. The IC can be configured for 12V or 24V operation and a wide range of variations, from Low speed to H-High speed and from 60cm to 120cm square using the same PCB. This makes it easy to design highly reliable fan motor installations. Features • Output protection Zener diode with variable withstand voltage Z1, Z2 pins open: VOLM = 57V (24V specification) Z1, Z2 pins shorted: VOLM = 32V (12V specification) External Zener diode connected across Z1 − VCC pins: support for fans with large drive current • External resistor allows configuration for 12V or 24V • Direct Hall element connection possible (built-in Hall amplifier with hysteresis supports core without auxiliary electrode) • Built-in output transistor with 1.0A output current (strengthened negative-current support for core without auxiliary electrode) • Built-in rotation detection function: Low during rotation and High during stop • Built-in lockup protection with automatic recovery • ST pin for motor stop/drive (for standby mode of copiers etc.) • FG output pin for rotation detection • BC pin for kickback noise reduction (with 2 external capacitors) • Built-in thermal shutdown Specifications Parameter Maximum input current Absolute Maximum Ratings at Ta = 25°C Symbol ICC max VOUT max IOUT max IRD max VRD max VST max Pd max Topr Tstg Mounted on a specified board * t ≤ 20ms Conditions Ratings 200 Internal 1.0 10 30 7.5 800 -30 to +80 -55 to +150 Unit mA V A mA V V mW °C °C Maximum applied output voltage Maximum output current Current flowing into RD, FG RD, FG applied voltage ST applied voltage Allowable power dissipation Operating temperature Storage temperature * Specified board: 20mm × 15mm × 1.5mm, glass epoxy board. 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. 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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. 31109 MS / 83100RM(KI) No.6203-1/5 LB1868M Allowable Operating Ranges at Ta = 25°C Parameter Input current range Common mode input voltage range ST High voltage ST Low voltage Symbol ICC VICM VSTH VSTL Conditions Ratings 6.0 to 50 0.2 to VIN-1.5 4.5 to 7.0 0 to 0.5 Unit mA V V V Electrical Characteristics at Ta = 25°C, ICC = 10mA Parameter Output limiter withstand voltage Symbol VOLM1 VOLM2 Output saturation voltage VOsat1 VOsat2 VIN voltage Hall input sensitivity (at zero peak) RD, FG output saturation voltage CT drain current CT discharge current Comp input threshold voltage VIN VHN VRDsat IC1 IC2 VTH1 VTH2 ST input current Thermal protection operating temperature Thermal protection circuit hysteresis * Design target value, Do not measurement. ∆TSD Design target value * 40 °C IST TSD VST = 5V Design target value * Z1, Z2 open Z1, Z2 short IO = 0.5A IO = 1.0A ICC = 7.0mA Including offset and hysteresis IRD = 5mA C = GND C = VIN 2.7 0.19 0.77 0.42 0.1 3.8 0.30 0.8VIN 0.45VIN 80 180 6.4 Conditions min 54 31 Ratings typ 57 33 0.95 1.15 6.7 max 60 35 1.2 1.5 7.0 20 0.3 4.9 0.41 0.83 0.48 120 V V V V V mV V µA µA V V µA °C Unit Package Dimensions unit : mm (typ) 3111A 1.0 Pd max -- Ta Specified board: 20×15×1.5mm3 glass epoxy board. 8.0 14 8 Allowable power dissipation, Pd max -- W 0.8 4.4 6.4 0.6 1.7MAX 1 (1.0) 1.0 0.35 7 0.15 0.63 0.4 0.1 (1.5) 0.2 SANYO : MFP14S(225mil) 0 -30 -20 0 20 40 60 80 100 Ambient temperature, Ta -- °C No.6203-2/5 LB1868M Pin Assignment IN− 1 IN+ 2 CT 3 ST 4 BC 5 OUT1 6 GND 7 Top view 14 VIN 13 RD 12 FG 11 Z2 10 Z1 9 OUT2 8 NC LB1868M Pin Function Pin No. 1 2 3 4 5 6 9 7 10 11 12 13 14 Pin name IN− IN+ CT ST BC OUT1 OUT2 GND Z1 Z2 FG RD VIN Hall input + pin. Hysteresis amplifier Hall input − pin. Hysteresis amplifier Lockup protection time setting capacitor pin (0.47 to 4.7µF). Start/stop pin. Output transistor common base pin. Output 1 pin. Output 2 pin. GND pin. External Zener diode pin (external Zener diode to be connected between power supply and Z1). Kickback absorption voltage alteration pin (shorted to Z1: 12V operation). Rotation frequency detector pin. Lockup detection pin (latch type). Regulated power supply input pin (limiting resistor to be inserted between power supply and VIN). Function Truth Table ST H IN+ H L H L or OPEN L H L IN− L H L H L H CT L L L L H H OUT1 H H H L H H OUT2 H H L H H H RD L L L L H H FG L H L H L H * RD is a latch type output No.6203-3/5 LB1868M Block Diagram VIN VCC R1 Thermal shutdown L1 L2 OUT1 R2 IN+ H IN− ST Constant current source Z2 Control block BC Z1 OUT2 CT C1 0.47 to 10µF FG RD GND Application Circuit Example (1) 12V supply voltage VCC 12V 330Ω 2kΩ 14 VIN 13 RD 12 FG 11 Z2 10 Z1 9 OUT2 8 NC LB1868M IN− 1 H IN+ 2 CT 3 ST 4 0.47µF BC 5 OUT1 6 GND 7 No.6203-4/5 LB1868M (2) 24V supply voltage VCC 24V 1.2kΩ 2kΩ 14 VIN 13 RD 12 FG 11 Z2 10 Z1 9 OUT2 8 NC LB1868M IN− 1 H IN+ 2 CT 3 ST 4 0.47µF BC 5 OUT1 6 GND 7 (3) High-Power Fan (120mm-HH-Speed) VCC 12V (24V) 330Ω (1.2kΩ) VZ=12V (24V) 2kΩ 14 VIN 13 RD 12 FG 11 Z2 10 Z1 9 OUT2 8 NC LB1868M IN− 1 H IN+ 2 CT 3 ST 4 0.47µF BC 5 OUT1 6 GND 7 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. 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SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of March, 2009. Specifications and information herein are subject to change without notice. PS No.6203-5/5