LA6587T

Ordering number : ENA0603 Monolithic Linear IC LA6587T Overview Fan Motor Driver BTL Driver Single-Phase Full-Wave The LA6587T 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 (FG, 1/2FG) 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 • 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) = 1.1Vtyp, IO = 100mA) : 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 & 1/2FG 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 package (MSOP10) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Output voltage Allowable power dissipation Output current Output withstand voltage RD/FG output pin output withstand voltage RD/FG output current IRD/FG max 10 mA Symbol VCC max Pd max IOUT max VOUT max VRD/FG max Mounted on a specified board* Conditions Ratings 15 400 0.6 15 15 Unit V mW A V V Continued on next page. Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein. D0606 MS PC B8-7868 No.A0603-1/5 LA6587T Continued from preceding page. Parameter HB output current Operating temperature Storage temperature Symbol IB max Topr Tstg Conditions Ratings 10 -40 to +85 -40 to +150 Unit mA °C °C * Mounted on a specified board : 114.3×76.2×1.5mm3, glass epoxy board. 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 especially specified. Parameter Circuit Current Symbol ICC1 ICC2 Lock detection capacitor charge current Capacitor discharge current Capacitor charge and discharge current ratio CT charge voltage CT discharge voltage OUT output L saturation voltage OUT output H saturation voltage Hall input sensitivity FG/1/2FG output pin L voltage FG/1/2FG output pin leak current VCT1 VCT2 VOL VOH VHN VFG IFGL IO = 200mA IO = 200mA Zero peak value (including offset and hysteresis) IFG = 5mA VFG = 15V 0.15 1 0.3 30 V μA 1.3 0.3 1.5 0.5 0.25 1.0 7 1.6 0.6 0.45 1.2 15 V V V V mV ICT2 RCT RCD = ICT1/ICT2 0.11 5 0.18 6.5 0.25 8 μA ICT1 Conditions min During drive (CT = L) During lock protection (CT = H) 4 3 0.9 Ratings typ 6 4.5 1.2 max 8 6 1.5 mA mA μA Unit Truth Table INH L IN+ L H H CT L OUT1 H L off OUT2 L H off FG L H During overheat protection RD * Mode During rotation * 1/2FG provides the output equivalent to the divided FG output. No.A0603-2/5 LA6587T Package Dimensions unit : mm (typ) 3236A 3.0 10 6 3.0 4.9 1 (0.5) 0.5 5 0.2 (0.85) 0.125 SANYO : MSOP10(150mil) Pin Assignment 0.08 1.1 max 0.5 IN+ 1/2FG HB FG IN- LA6587T VCC CT OUT2 OUT1 Top view GND No.A0603-3/5 LA6587T Block Diagram VCC AMP power supply 1.5VRG HB IN+ H OUT1 OUT2 IN- GND FG 1/2FG Control circuit Charge discharge Discharge pulse CT = 0.47 to 1μF No.A0603-4/5 LA6587T Sample Application Circuit Di *1 Cr VCC 1/2FG R1 HB *2 H INFG *4 OUT1 HB OUT2 *6 CT GND H IN*3 IN+ *5 On board element IN+ *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 1VCC 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. *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. *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. Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. 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. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or 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. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 2006. Specifications and information herein are subject to change without notice. PS No.A0603-5/5