Ordering number : ENA2073 LA6597FMC Monolithic Linear IC Single-phase Full-wave Fan Motor IC http://onsemi.com Overview The LA6597FMC drives the single-phase bipolar fan motor by means of the BTL output linear drive highly efficiently while suppressing the reactive current, in the power-saving and silent manner. With incorporated lock protection and lock signal circuits, this product is optimum for fans of car audio, projector, and VGA card where the high-temperature operation, high reliability, and low noise are required. Functions • Single-phase full-wave linear drive by BTL output (gain resistance 1k to 240k, 48dB) : No switching noise, which is optimum for equipment requiring silent operation of the projector and car audio. • Operable at low voltage and over a wide operation voltage range (2.2 to 14.0V) • Low saturation output (Upper + lower saturation voltages: VOsat (total) = 1.1V typ, IO = 200mA) : High coil efficiency and small current drain. Small heat generation from IC itself • Diffusion of generated heat : Connection of external resistor between VM and VCC enables reduction of heat generation of IC itself. (Upper side + lower side saturation voltage: Vosat (total) = 0.85Vtyp, IO = 300mA, RM = 1Ω) • Lock protection and automatic return circuits incorporated • FG output (Rotation detection output: Open collector output) • Hall bias incorporated (VHB = 1.55V) • Heat protection circuit :The heat protection circuit suppresses the drive current to prevent burn or damage of IC when the large current flows due to output short-circuit and the IC chip temperature exceeds 180°C. • Small package with high heat capacity Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC max 15 V Output current IOUT max 1.0 A Output withstand voltage VOUT max 15 V VFG max 15 V FG output current IFG max 5 mA HB output current IHB max Allowable dissipation Pd max Output withstand voltage of FG output pin Mounted on a specified board. * 10 mA 750 mW Operating temperature Topr -30 to +110 °C Storage temperature Tstg -55 to +150 °C 3 * Mounted on a specified board: 114.3×76.1×1.6 mm , glass epoxy board. Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 May, 2013 60612 SY 20120326-S00008 No.A2073-1/5 LA6597FMC Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 2.2 to 14.0 V Common-phase input voltage VICM 0 to VCC–1.5 V range of Hall input Electrical Characteristics at Ta = 25°C, VCC = 12V, unless otherwise specified. Parameter Symbol Circuit Current Lock detection capacitor Conditions ICC1 During drive (CT = L) ICC2 During lock protection (CT = H) Ratings min typ 4.5 ICT1 Unit max 6.0 8.5 mA 3.0 4.5 6.0 mA 2.0 2.8 3.5 μA 0.14 0.22 0.30 μA 9 12 15 charge current Capacitor discharge current ICT2 Capacitor charge and RCT RCD = ICT1/ICT2 discharge current ratio CT charge voltage VCT1 1.40 1.55 1.70 V CT discharge voltage VCT2 0.4 0.5 0.6 V OUT output L saturation VOL IO = 300mA 0.2 0.3 V VOH IO = 300mA 0.65 0.85 V IN+, IN- difference voltage ±10 ±15 mV 0.2 voltage OUT output H saturation voltage VHN Hall input sensitivity (including offset and hysteresis) FG output pin L voltage VFG IFG = 5mA 0.1 FG output pin leak current IFG VFG = 15V 1 VHBL IHB = 5mA HB output voltage 1.40 1.55 V μA 1.70 V Truth Table IN- IN+ CT OUT1 OUT2 FG Mode H L L H L L During rotation L H L H H - - H OFF OFF - During overheat protection -:Don’t care. No.A2073-2/5 LA6597FMC Package Dimensions unit : mm (typ) 3426A 4.9 6 Allowable power dissipation, Pd max -- W 6.0 5 0.41 0.835 0.37 1.0 0.21 1.5 1.75 MAX 1 Pd max -- Ta 1.0 3.9 10 Mounted on specified board: 114.3×76.1×1.6mm3 glass epoxy board. 0.8 0.6 0.4 0.24 0.2 0.175 0 -30 0 30 60 90 120 Ambient temperature, Ta -- °C SANYO : SOIC10 Pin Assignment IN+ 1 10 FG HB 2 9 VCC IN- 3 8 VM CT 4 7 OUT2 OUT1 5 6 GND LA6597FMC Top View No.A2073-3/5 LA6597FMC Block Diagram VCC VM HB 1.5V REG IN+ OUT1 H OUT2 IN- GND FG Control circuit Charge discharge Discharge pulse No.A2073-4/5 LA6597FMC Application Circuit Examples *1 Di *4 Cr *2 R1 H VCC VM HB FG IN- OUT1 IN+ OUT2 CT GND Element in the board *1: When Di to prevent breakdown in case of reverse connection is used, it is necessary to insert a capacitor Cr to secure the regenerative current route. Similarly, Cr (≥0.47µF) is necessary to enhance the reliability when there is no capacitor near the fan power line. *2: This IC performs linear drive by amplifying the Hall output and by voltage-controlling the coil. The Hall element is biased by means of the bias from VCC with R1 and by means of the constant voltage (VHB = 1.5V) from the HB pin. As a result, stable Hall output is obtained even at high temperatures. *3: Heat generated in IC is dissipated by inserting the resistor RM between VCC and VM, which enables the use of the product in the environment with high ambient temperature. Recommended RMs is as follows: RM = 1Ω/0.5W (Ioave = 0.25A or more) RM = 2Ω/0.5W (Ioave = 0.25A or less) *4: Keep this open when not using. ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.A2073-5/5