LB11685AV-TLM-H

LB11685AV-TLM-H ONSEMI | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 7

Technical content

71812 SY/61610 SY 20100604-S00001 No.A1772-1/7 http://onsemi.com LB11685AV Overview The LB11685AV is a three-phase full-wave current-linear-drive motor driver IC. It adopts a sensor less control system without the use of a Hall Effect device. For quieter operation, the LB11685AV features a current soft switching circuit and be optimal for driving the cooling fan motors used in refrigerators, etc. Functions

• Three-phase full-wave linear drive (Hall sensor-less method) • Built-in current limiter circuit
• Built-in three-phase output voltage control circuit • Built-in motor lock protection circuit
• Motor lock protection detection output • FG output made by back EMF
• Built-in thermal shut down circuit • Beat lock prevention circuit Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage V CC max 19 V Input applied voltage V IN max -0.3 to V CC +0.3 V Maximum output current I O max *1 1.2 A Allowable power dissipation Pd max Mounted on a board *2 1.05 W Operating temperature Topr -40 to 85 °C Storage temperature Tstg -55 to 150 °C Junction temperature Tj max 150 °C *1: The IO is a peak value of motor-current. *2: Specified board: 76.1mm × 114.3mm × 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 3-phase sensor less Motor driver 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

No.A1772-2/7 Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Recommended Supply voltage V CC 12.0 V Operating supply voltage V CC op 4.5 to 18.0 V Electrical Characteristics at Ta = 25°C, VCC = 5.0V Ratings Parameter Symbol Conditions min typ max Unit Supply current I CC FC1 = FC2 = 0V 5 10 20 mA Internal regulate voltage VREG 3.0 3.3 3.6 V Output voltage (source) VOSOUR I O = 0.8A *3 1.3 1.7 V Output voltage (sink) VOSINK I O = 0.8A *3 0.5 1.3 V Current limiter VOLI M 0.268 0.300 0.332 V MCOM pin common-input voltage range VINCOM 0 V CC - 2 V MCOM pin Source current for hysteresis ICOM+ MCOM = 7V 30 80 μA MCOM pin Sink current for hysteresis ICOM- MCOM = 7V 30 80 μA MCOM pin hysteresis current ratio RTCOM RTCOM = ICOM+ / ICOM- 0.6 1.4 VCO input bias current I VCO V CO = 2.3V 0.2 μA VCO oscillation minimum frequency fVCOmin V CO = 2.1V, CX = 0.015μF Design target *2 930 Hz VCO oscillation maximum frequency fVCOmax V CO = 2.7V, CX = 0.015μF Design target *2 8.6 kHz CX charge / discharge current I CX V CO = 2.5V, CX = 1.6V 70 100 140 μA CX hysteresis voltage ΔVCX 0.35 0.55 0.75 C1 (C2) charge current IC1(2)+ V CO = 2.5V, C1(2) = 1.3V 12 20 28 μA C1 (C2) discharge current IC1(2)- V CO = 2.5V, C1(2) = 1.3V 12 20 28 μA C1 (C2) charge / discharge current ratio C1/C2 charge current ratio RTCCHG RTCCHG = IC1+ / IC2+ 0.8 1.0 1.2 C1/C2 discharge current ratio RTCDIS RTCDIS = IC1- / IC2- 0.8 1.0 1.2 C1 (C2) cramp voltage width VCW1(2) 1.0 1.3 1.6 V FG output low level voltage VFGL IFG = 3mA 0.5 V RD output low level voltage VRDL IRD = 3mA 0.5 v Thermal shut down operating temperature *1 TTSD Junction temperature Design target *2 150 180 °C Thermal shut down hysteresis temperature *1 ΔTTSD Junction temperature Design target *2 15 °C *1: The thermal shut down circuit is built-in for protection from damage of IC. But its operation is out of Topr. Design thermal calculation at normal operation. *2: Design target value and no measurement is made. *3: The IO is a peak value of motor-current.

No.A1772-3/7 Package Dimensions unit : mm (typ) 3315 Pin Assignment SANYO : SSOP24J(275mil) 7.6 5.6 11 2 1324 0.5 0.15 9.75 (1.3)0.1 1.5MAX 0.8 (0.48) 0.3 Pd max - Ta 1.05 1.5 -40 80 0.55 6020 400 100-20 0.5 1.0 Specified circuit board : 114.3 × 76.1 × 1.6mm3 glass epoxy board Ambient temperature, Ta -- C Allowable power dissipation, Pd max -- W VOUT24 WOUT (NC) RF VCC REG VOH FC1 (NC) FC2 UOUT (NC) (NC) PGND MCOM (NC) SGND FG RD (NC) VCO CX

No.A1772-4/7 Block Diagram Output Switching Control Start Up Mask Timing Power On Reset Motor Lock Detector Reference Voltage Bandgap TSD Distributor Pre Drive 1 24 Torque Ripple Rejection & Current Limit Low Voltage Control Soft SwitchingVCO PLL FG

No.A1772-5/7 Pin Function Pin No. Pin name Function Equivalent circuit UOUT WOUT VOUT Each output pin of three phases. 4 PGND GND pin in the output part. This pin is connected to GND. The SGND pin is also connected to GND 20 RF Pin to detect output current. By connecting a resistor between this pin and V CC, the output current is detected as a voltage. The current limiter is operated by this voltage. 5 MCOM Motor coil midpoint input pin. The coil voltage waveform is detected based on this voltage.

7 SGND Ground pin (except the output part)

This pin is connected to GND. The PGND pin is also connected to GND. 8 FG FG out made by back EMF pin. It synchronizes FG out with inverted V-phase. When don’t use this function, open this pin. 9 RD Motor lock protection detection output pin. Output with L during rotation of motor. Open during lock protection of motor (High-impedance). When don’t use this function, open this pin. 11 VCO PLL output pin and VCO input pin. To stabilize PLL output, connect a capacitor between this pin and GND. 12 CX VCO oscillation output pin. Operation frequency range and minimum frequency are determined by the capacity of the capacitor connected to this pin. Continue to the next page. Pin No.20 Pin No.4 Pin No.1,23,24 Pin No.5 SGND SGND SGND VCC VCC SGND SGND Pin No.8 No.9 SGND SGND Pin No.11 VCC SGND SGND VREG VREG VREG Pin No.12 VCC SGND SGND VREG

No.A1772-6/7 Continue from the former page. Pin No. Pin name Function Equivalent circuit Soft switching adjustment pin. The triangular wave from is form formed by connecting a capacitor with this pin. And, the switching of three-pha se output is adjusted by the slope. 15 FC2 Frequency characteristic correction pin 2. To suppress the oscillation of control system closed loop of sink-side, connect a capacitor between this pin and GND. 16 FC1 Frequency characteristic correction pin 1. To suppress the oscillation of control system closed loop of source-side, connect a capacitor between this pin and GND. 17 VOH Three-phase output high level output pin. To stabilize the output voltage of this pin, connect a capacitor between this pin and the VCC pin. 18 VREG DC voltage (3.3V) output pin. Connect a capacitor between this pin and GND for stabilization. 19 VCC Pin to supply power-supply voltage. To curb the influence of ripple and noise. The voltage should be stabilized. Pin No.13 VCC SGND SGND Pin No.15 VCC SGND SGND VREG Pin No.16 VCC SGND SGND Pin No.17 VCC SGND SGND VCC Pin No.18 VCC SGND SGND VCC

PS No.A1772-7/7 Application Circuit Example * Each fixed number in the following FIG, is the referential value. FAN MOTOR 1 24 VCC 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.