Ordering number : ENA2266 LA6595DM Monolithic Linear IC BTL Drive Single-Phase Full-Wave Fan Motor Driver http://onsemi.com Overview 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. Micro8 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 • Extra-small package (Micro8) Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC max 15 V Output current IOUT max 0.5 A Output voltage VOUT max 15 V RD output pin output withstand voltage VRD max 15 V RD output current IRD max Allowable power dissipation Pd max Operating temperature Topr -30 to +90 °C Storage temperature Tstg -55 to +150 °C Mounted on a specified board* 10 mA 400 mW * Specified board : 20.0mm × 10.0mm × 0.8mm, glass epoxy board. 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 Conditions at Ta = 25°C Parameter Symbol Supply voltage VCC Common-phase input voltage range of hall input VICM Conditions Ratings Unit 2.2 to 14.0 V 0 to VCC -1.5 V ORDERING INFORMATION See detailed ordering and shipping information on page 5 of this data sheet. Semiconductor Components Industries, LLC, 2014 January, 2014 10814NK 20131203-S00002 No.A2266-1/5 LA6595DM Electrical Characteristics at Ta = 25°C, VCC = 12V, Unless otherwise specified. Ratings Parameter Symbol Conditions Unit min Circuit current Lock detection capacitor charge ICC1 Drive mode (CT = low) ICC2 Lock protection mode (CT = high) ICT1 typ max 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 current Capacitor discharge current ICT2 Capacitor charge/discharge current RCT RCD = ICT1/ICT2 ratio CT charge voltage VCT1 1.3 1.5 1.7 V CT discharge voltage VCT2 0.3 0.5 0.7 V OUT output low saturation voltage VOL IO = 200mA 0.25 0.45 V OUT output high saturation voltage VOH IO = 200mA 0.95 1.2 V Hall input sensitivity VHN Zero peak value (including offset and hysteresis) 7 15 mV RD output pin low-level voltage VRD IRD = 5mA 0.15 0.3 V RD output pin leakage current IRDL VRD = 15V 1 30 μA Pd max -- Ta Allowable poswer dissipation, Pd max -- mW 500 400 300 200 192 100 0 -30 0 30 60 90 120 No.A2266-2/5 LA6595DM Package Dimensions unit : mm (typ) Micro8 CASE 846A-02 ISSUE J Pin Assignment Micro8 IN+ 1 8 RD IN− 2 7 VCC CT 3 6 OUT2 OUT1 4 5 GND Top View No.A2266-3/5 LA6595DM Block Diagram VCC H IN+ OUT1 OUT2 IN− GND RD Control circuit Charge/discharge circuit Discharge pulse CT CT=0.47 to 1μF Truth Table IN− IN+ High Low Low High − − CT Low High OUT1 OUT2 RD High Low Low Low High Low Off Off Off Mode During rotation Lock protection No.A2266-4/5 LA6595DM Application Circuit Example Di Cr *3 *1 VCC RD R2 *2 H *4 IN+ OUT1 IN− OUT2 R2 CT GND 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. ORDERING INFORMATION Device LA6595DMR2G Package Micro8 (Pb-Free / Halogen Free) Shipping (Qty / Packing) 4000 / Tape & Reel 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. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.A1433-5/5