LA6595T

Ordering number : ENA1433 Monolithic Linear IC LA6595T Overview BTL Drive Single-Phase Full-Wave Fan Motor Driver The LA6595T is a single-phase bipolar fan motor driver that achieves quite operation, power savings, silent operation and high efficiency that suppresses reactive current through BTL output linear drive. It provides lock protection and rotation detection circuits on chip, and is optimal for applications that require high reliability and low noise, such as notebook personal computers, power supplies in consumer electronic equipment, car audio, and CPU cooling systems. Features • BTL output single-phase full-wave linear drive (gain resistor : 1 to 360kΩ, 51dB) • Supports low-voltage drive and features a wide usable voltage range (2.2 to 14.0V) • Low saturation output (high side + low side saturation voltage : VOsat (total) = 1.2V (typical), IO = 200mA) • Built-in lock protection and automatic return circuits • Built-in RD (Rotation Detection) output • Thermal protection circuit • Small-sized, high thermal capacity package Specifications Maximum Ratings at Ta = 25°C Parameter Supply voltage Output current Output voltage RD output pin output withstand voltage RD output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max IOUT max VOUT max VRD max IRD max Pd max Topr Tstg Mounted on a specified board* Conditions Ratings 15 0.5 15 15 10 400 -30 to +90 -55 to +150 Unit V A V V mA mW °C °C * Specified board : 114.3mm × 76.1mm × 1.6mm, 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. 40809 MS 20090323-S00009 No.A1433-1/4 LA6595T Recommended Operating Conditions at Ta = 25°C Parameter Supply voltage Common-phase input voltage range of hall input Symbol VCC VICM Conditions Ratings 2.2 to 14.0 0 to VCC -1.5 Unit V V Electrical Characteristics at Ta = 25°C, VCC = 12V, Unless otherwise specified. Parameter Circuit current Symbol ICC1 ICC2 Lock detection capacitor charge current Capacitor discharge current Capacitor charge/discharge current ratio CT charge voltage CT discharge voltage OUT output low saturation voltage OUT output high saturation voltage Hall input sensitivity RD output pin low-level voltage RD output pin leakage current VCT1 VCT2 VOL VOH VHN VRD IRDL IO = 200mA IO = 200mA Zero peak value (including offset and hysteresis) IRD = 5mA VRD = 15V 1.3 0.3 1.5 0.5 0.25 0.95 7 0.15 1 1.7 0.7 0.45 1.2 15 0.3 30 V V V V mV V µA ICT2 RCT RCD = ICT1/ICT2 0.10 5 0.18 6.5 0.25 8 µA ICT1 Conditions min Drive mode (CT = low) Lock protection mode (CT = high) 3 2.5 0.9 Ratings typ 6 5 1.2 max 9 7.5 1.5 mA mA µA Unit Package Dimensions unit : mm (typ) 3245B 3.0 8 500 Pd max -- Ta Specified board: 114.3×76.1×1.6mm3 glass epoxy board. Allowable poswer dissipation, Pd max -- mW 400 300 3.0 4.9 0.5 200 192 1 (0.53) 2 0.65 0.25 1.1MAX (0.85) 100 0.125 0 -30 0 30 60 90 120 Ambient temperature, Ta -- °C SANYO : MSOP8(150mil) 0.08 No.A1433-2/4 LA6595T Pin Assignment IN+ 1 IN− 2 8 RD 7 VCC LA6595T CT 3 OUT1 4 Top View 6 OUT2 5 GND Block Diagram VCC H IN+ IN− OUT1 OUT2 GND RD Control circuit Charge/discharge circuit Discharge pulse CT CT=0.47 to 1µF Truth Table IN− High Low − IN+ Low High − High CT Low OUT1 High Low Off OUT2 Low High Off RD Low Low Off Lock protection Mode During rotation No.A1433-3/4 LA6595T Application Circuit Example Di *1 Cr *3 VCC R2 *2 RD H IN+ IN− CT OUT1 OUT2 GND *4 R2 Circuit board mounted cpmponents *1. If the diode Di (which protects the IC destruction by reverse connection) is used, it is necessary to insert the capacitor Cr and provide a regenerative current route. Similarly, if there is no nearby capacitor on the fan power supply line, Cr will also be necessary to improve reliability. *2. If the Hall sensor bias is taken from VCC, a 1/2 VCC bias, as shown in the figure, must be used. Linear drive is implemented by amplifying the Hall sensor output and applying voltage control to the coil. If the Hall effect sensor provides a strong output, the startup characteristics and efficiency will be good, then even quieter operation will be achieved by adjusting the Hall effect sensor. *3. This pin must be left open if unused. *4. If the line from the Hall sensor output to the Hall sensor input of IC are long, noise may enter the system from that line. If that becomes a problem, insert a capacitor as shown in the figure. 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. 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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 April, 2009. Specifications and information herein are subject to change without notice. PS No.A1433-4/4