LB1960MC ONSEMI | Alldatasheet

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70412 SY 20120417-S00001 No.A2078-1/4 http://onsemi.com Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Oper ating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 May, 2013 LB1960MC Overview The LB1960MC is a 2-phase half-wave driver for fan motor. The LB1960MC is a compact package. Low external parts count, easy wiring, and small PCB area allow use also with miniature fan motors. Functions

  • Dual power supply voltage design (5/12V) and wide voltage handling range. (3V also supported for rotation functions only)
  • Constant-voltage Hall bias power supply (1.3V across HB to GND) assures stable Hall output over entire temperature and power supply voltage range. External limiting resistor not required.
  • Built-in Hall amplifier with hysteresis (supports core without commutating pole).
  • Built-in lockup protection and automatic recovery circuits (External capacitor for rotation detection need only be 0.1μF, allowing compact, cost-saving design).
  • Built-in output transistor with output withstand voltage 24V (max)/output current 500mA (average), 1A (peak).
  • Built-in thermal protection circuit. Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage V CC max 18 V IOUT ave 500 mA Maximum output current IOUT peak t ≤ 1ms 1000 mA Maximum output voltage V OUT max Internal V Maximum HB output current IH max 10 mA Allowable power dissipation Pd max Mounted on a specified board * 750 mW Operating temperature Topr -30 to +85 °C Storage temperature Tstg -55 to +150 °C * Specified board: 114.3mm × 76.1mm × 1.6mm, 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. Monolithic Digital IC For Fan Motor 2-phase Half-Wave Driver

No.A2078-2/4 Allowable Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Recommended supply voltage V CC 3.6 to 17 V Common mode input voltage range V COM 0.2 to HB V Electrical Characteristics at Ta = 25°C, VCC = 12V Ratings Parameter Symbol Conditions min typ max Unit In drive mode (CT = L) 2.3 4 mA Circuit current I CC In lockup protection mode (CT = H) 3 5 mA CT capacitor charge current I CT1 V CT = 0.2V 0.8 1.2 2.0 μA Capacitor discharge current I CT2 V CT = 8V 0.16 0.24 0.4 μA Capacitor charge/discharge current ratio RCT RCT = I CT1/ICT2 4.0 5.0 7.0 CT charge voltage V CT1 6.8 7.2 7.6 V CT discharge voltage V CT2 1.4 1.6 1.8 V Output limiter withstand voltage V OLM I O = 1mA 22.5 23.5 24.5 V Output saturation voltage V Osat I O = 50mA 1.0 1.3 V Hall input sensitivity V HN Including offset and hysteresis 6 12 mV HB output H voltage V HBH RH = 350 Ω 1.1 1.3 1.5 V Thermal protection trigger temperature TSD Assured design target * 180 180 210 °C * Assured design target: Target value, not measured individually. Package Dimensions unit : mm (typ) 3424 SANYO : SOIC8 4.9 3.9 6.0 0.835 0.375 0.20.421.27 0.175

1.75 MAX

-30 0 30 60 90 1200 800 600 400 200 390 1000 Ambient temperature, Ta -- °C Allowable power dissipation, Pd max -- mW Specified board: 114.3×76.1×1.6mm3 glass epoxy board.

No.A2078-3/4 Pin Assignment 1IN+ 2HB+ 3IN− 4OUT1 VCC CT OUT2 GND LB1960MC Top view Block Diagram VCC H OUT1 OUT2 GND CT 0.1 to 1μF IN+ IN− L1 L2 HB+ Constant voltage output circuit Constant current source Thermal protection circuit Control Block Truth Table IN- IN + CT OUT1 OUT2 Mode H L L H L H L H L Rotating - - H OFF OFF Lock-up protection activated

PS No.A2078-4/4 Application Circuit Example 5/12V power supply (3.8 to 18V) VCC H OUT1 OUT2 GND CT 0.1μF IN+ IN− HB+ RH On-board parts Precautions

  • If CT pin is connected to GND, the lockup protection and restart functions are disabled.
  • In a circuit configuration as shown above, a power supply/GND reverse connection will cause a current to flow as follows: GND → OUT → coil → power supply. The value of this current is limited by the coil resistance. If it is less than 500mA, the IC will not be destroyed. If required, insert a diode between VCC and the coil. 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 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, consequentia l 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 techn ical 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 productsfor any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, anddistributors 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 oft h e 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.