LA6584M-TLM-E

Ordering number : ENN8349 LA6584M Monolithic Linear IC BTL Driver Single-Phase Full-Wave Fan Motor Driver http://onsemi.com Overview The LA6584M is Single-phase bipolar fan motor is put into silent driving by means of BTL output linear drive, offering high efficiency and power saving by suppressing the reactive current. Lock protection and rotation signal (FG, RD) circuits are built in, ensuring optimum application to small fans for notebook PC, consumer equipment power supply, car audio system, CPU cooler, etc. that require high reliability and low noise. Functions and Applications • Single-phase full-wave driver for fan motor Specitications Absolute Maximum Ratings at Ta = 25 °C Parameter Output voltage Allowable dissipation Symbol Conditions Ratings Unit VCC max Pd max Mounted on a specified board* 15 V 1.5 W Output current IOUT max 1.6 A Output withstand voltage VOUT max 15 V RD/FG output pin output VRD/FG max 15 V IRD/FG max 5 mA IB max 10 mA Withstand voltage RD/FG output current HB output voltage Operating temperature Topr -30 to +90 °C Storage temperature Tstg -55 to +150 °C *Mounted on a specified board (114.3×76.1×1.6mm, Glass epoxy) 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. Recommended Operating Range at Ta = 25 °C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 2.8 to 14.0 V Common-phase input voltage VICM 0 to VCC-1.5 V Range of Hall input Semiconductor Components Industries, LLC, 2013 May, 2013 92706 / 62005 MS PC No.8349-1/5 LA6584M Electrical Characteristics at Ta = 25 °C, VCC = 12 V, unless especially specified. Parameter Symbol Ratings Conditions min Circuit current typ Unit max ICC1 During drive (CT = L) 4 6 9 mA ICC2 During lock protection (CT = H) 2 4 6 mA Lock detection capacitor charge current ICT1 2.0 2.8 3.5 μA Capacitor discharge current ICT2 0.15 0.23 0.30 μA Capacitor charge and discharge current ratio RCT 9 12 15 - CT charge voltage VCT1 1.6 1.7 1.8 V CT discharge voltage VCT2 0.6 0.7 0.8 V OUT output L saturation voltage VOL IO = 200 mA 0.2 0.3 V OUT output H saturation voltage VOH IO = 200 mA 0.9 1.2 V Hall input sensitivity VHN Zero peak value 7 15 mV RD/FG output pin L voltage VRD/FG 0.1 0.2 V 1 30 μA 1.5 1.7 V RCD = ICT1/ICT2 (including offset and hysteresis) IRD/FG = 5 mA RD/FG output pin leak current IRD/FGL VRD/FG = 15 V HB output L voltage VHBL IHB = 5 mA 1.3 Package Dimensions unit : mm 3097B No.8349-2/5 LA6584M Truth Table IN- IN+ CT OUT1 H L L H L H L - - OFF OFF - H OUT2 FG RD Mode L L L During rotation H H H During overheat protection Pin Assignment F-GND F-GND IN+ (NC) HB RD IN- FG (NC) (NC) LA6584M CT VCC (NC) (NC) OUT1 OUT2 GND (NC) F-GND F-GND Top view No.8349-3/5 LA6584M Sample Application Circuit Di Cr *4 *1 VCC R2 FG HB H *2 RD OUT1 IN- HB OUT2 IN+ R2 *5 *6 CT GND R1 *3 H IN- On board element IN+ *1 *2 *3 *4 *5 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 is necessary to enhance the reliability when there is no capacitor near the fan power line. To obtain Hall bias from VCC, carry out 1/2×VCC bias as shown in the figure. Linear driving is made through voltage control of the coil by amplifying the Hall output. When the Hall element output is large, the startup performance and efficiency are improved. Adjustment of the Hall element can reduce the noise further. When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 2.0 V. Therefore, the Hall element can provide the output satisfactory in temperature characteristics. Adjustment of the Hall output amplitude is made with R1. (When VCC = 12 V, the step *2 above proves advantageous for IC heat generation.) Keep this open when not used. When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring. In this case, insert the capacitor as shown in the figure. No.8349-4/5 LA6584M Internal Equivalent Circuit VCC 1.5VRG HB H IN+ OUT1 OUT2 IN- GND FG Control Circuit Charge/discharge circuit RD Discharge pulse CT=0.47 to 1µF 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. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.8349-5/5