Ordering number : ENA2030 LA6585MC Monolithic Linear IC For Motor Driver http://onsemi.com BTL Driver Single-Phase Full-Wave Overview The LA6585MC is single-phase bipolar fan motor is driven, through BTL output linear drive, at high efficiency, low power, and low sound by suppressing the reactive power. Lock protection, rotary signal circuits are incorporated, which is optimum for the notebook PC, consumer equipment power supply, car audio system, CPU cooler, etc. that require high reliability and low noise. Functions • Pre-driver for single-phase full-wave drive • Single-phase full-wave linear drive by BTL output (gain resistance 1kΩ-360kΩ, 51dB) : No switching noise, which is optimum for equipment requiring silence, such as consumer equipment power supply, car audio system, etc. • Low-voltage operation possible, with wide operating voltage range (2.2 to 14.0V) • Low saturation output (Upper + lower saturation voltage : VOsat (total) = 1.2Vtyp, IO = 250mA) : High coil efficiency with low current drain. Additionally, IC itself generates only small heat. • Built-in lock protection and automatic reset circuits • Built-in FG & RD outputs • Built-in Hall bias (VHB = 1.5V) • Thermal protection circuit : When the large current flows due to output short-circuit and the IC chip temperature exceeds 180°C, this protective circuit suppresses the drive current to prevent burn and damage to IC. • Extra-small & high heat capacity package Semiconductor Components Industries, LLC, 2013 May, 2013 42512 SY 20120222-S00010 No.A2030-1/4 LA6585MC Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Supply voltage Conditions Ratings VCC max Allowable power dissipation Pd max Mounted on a specified board* Unit 15 V 750 mW Output current IOUT max 0.7 A Output withstand voltage VOUT max 15 V 15 V 10 mA RD/FG output pin output withstand VRD/FG max voltage RD/FG output current IRD/FG max HB output current IB max 10 mA Operating temperature Topr -30 to +90 °C Storage temperature Tstg -55 to +150 °C *1: Specified board: 114.3mm × 76.1mm ×1.6mm, glass epoxy board *2: Tj = 150°C max must not be exceeded. 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. Operating Conditions at Ta = 25°C Parameter Symbol Supply voltage VCC Common-phase input voltage range of VICM Conditions Ratings Hall input Unit 2.2 to 14.0 V 0 to VCC-1.5 V Electrical Characteristics at Ta = 25°C, VCC = 12V, unless otherwise specified Parameter Symbol Ratings Conditions min Circuit Current Lock detection capacitor charge ICC1 During drive (CT = L) ICC2 During lock protection (CT = H) ICT1 current Capacitor discharge current ICT2 Capacitor charge and discharge RCT RCD = ICT1/ICT2 current ratio CT charge voltage VCT1 CT discharge voltage VCT2 OUT output L saturation voltage VOL OUT output H saturation voltage Hall input sensitivity typ 3 6 9 mA 2.5 5 7.5 mA 0.9 1.2 1.5 μA 0.10 0.18 0.25 μA 5 6.5 8 - 1.3 1.5 1.7 V 0.5 0.7 V IO = 200mA 0.3 0.25 0.45 V VOH IO = 200mA 0.95 1.2 V VHN Zero peak value 7 15 mV V (including offset and hysteresis) Hall bias voltage Unit max VHB IHB = 5mA 1.5 1.7 FG/RD output pin L voltage VFG/RD IRD/FG = 5mA 1.3 0.15 0.3 V FG/RD output pin leak current IFG/RDL VRD/FG = 15V 1 30 μA Truth Table IN- IN+ H L L H - - CT L H OUT1 OUT2 FG H L L L H H off off - RD Mode L During rotation H During overheat protection No.A2030-2/4 LA6585MC Package Dimensions unit : mm (typ) 3426A 4.9 10 6 Pd max -- Ta 0.21 1.5 0.175 Allowable power dissipation, Pd max -- mW 5 0.41 1.0 1.75 MAX 1 0.835 0.37 6.0 3.9 1000 Spesified board: 114.3×76.1×1.6mm3 glass epoxy board. 800 750 600 400 360 200 SANYO : SOIC10 0 -30 0 30 60 90 120 Ambient temperature, Ta -- C Pin Assignment IN+ 1 10 RD HB 2 9 FG 3 LA6585MC CT 4 8 VCC 7 OUT2 OUT1 5 6 GND Top view Block Diagram VCC 1.5VRG HB IN+ H OUT1 OUT2 IN- GND FG Control circuit Charge discharge RD Discharge pulse CT=0.47 to 1 F No.A2030-3/4 LA6585MC Application Circuit Example Di Cr *4 VCC *1 RD R2 HB FG HB LA6585MC *2 H OUT1 R1 *3 H IN+ OUT2 *5 CT GND IN+ Elements in substrate *1: When the breakdown protective DI at reverse connection is to be used, it is necessary to insert the capacitor Cr to secure the regenerative current route. Similarly, Cr must be provided to enhance the reliability when there is no capacitor near the fan power line. *2: To obtain Hall bias from VCC, carry out bias to VCC with resister R2 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. *3: To obtain Hall bias from the HB pin, carry out constant-voltage bias at about 1.5V, which enables the Hall element to generate the stable Hall output satisfactory in temperature characteristics. Adjustment of the Hall output amplitude is made with R1. (When VCC=12V, the step *2 above proves advantageous for IC heat generation.) *4: Keep this open when not using. *5: 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. 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