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LB11685AV Dataheets PDF



Part Number LB11685AV
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description 3-phase sensor less Motor driver
Datasheet LB11685AV DatasheetLB11685AV Datasheet (PDF)

Ordering number : ENA1772A LB11685AV Monolithic Digital IC 3-phase sensor less Motor driver http://onsemi.com 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-l.

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Ordering number : ENA1772A LB11685AV Monolithic Digital IC 3-phase sensor less Motor driver http://onsemi.com 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 three-phase output voltage control circuit • Motor lock protection detection output • Built-in thermal shut down circuit • Built-in current limiter circuit • Built-in motor lock protection circuit • FG output made by back EMF • Beat lock prevention circuit Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage Input applied voltage Maximum output current Allowable power dissipation VCC max VIN max IO max *1 Pd max Mounted on a board *2 19 -0.3 to VCC +0.3 1.2 1.05 V V A 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. 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. Semiconductor Components Industries, LLC, 2013 May, 2013 71812 SY/61610 SY 20100604-S00001 No.A1772-1/7 LB11685AV Recommended Operating Conditions at Ta = 25°C Parameter Recommended Supply voltage Operating supply voltage Symbol VCC VCC op Conditions Ratings 12.0 4.5 to 18.0 Unit V V Electrical Characteristics at Ta = 25°C, VCC = 5.0V Parameter Symbol Conditions Ratings Unit min typ max Supply current Internal regulate voltage ICC VREG FC1 = FC2 = 0V 5 10 20 mA 3.0 3.3 3.6 V Output voltage (source) Output voltage (sink) Current limiter VOSOUR VOSINK VOLIM IO = 0.8A *3 IO = 0.8A *3 0.268 1.3 0.5 0.300 1.7 1.3 0.332 V V V MCOM pin common-input voltage range MCOM pin Source current for hysteresis MCOM pin Sink current for hysteresis MCOM pin hysteresis current ratio VCO input bias current VCO oscillation minimum frequency VCO oscillation maximum frequency CX charge / discharge current CX hysteresis voltage VINCOM ICOM+ ICOM- RTCOM IVCO fVCOmin fVCOmax ICX ΔVCX MCOM = 7V MCOM = 7V RTCOM = ICOM+ / ICOM- VCO = 2.3V VCO = 2.1V, CX = 0.015μF Design target *2 VCO = 2.7V, CX = 0.015μF Design target *2 VCO = 2.5V, CX = 1.6V 0 30 30 0.6 70 0.35 VCC - 2 80 V μA 80 μA 1.4 0.2 μA 930 Hz 8.6 kHz 100 0.55 140 0.75 μA C1 (C2) charge current C1 (C2) discharge current C1 (C2) charge / discharge current ratio C1/C2 charge current ratio IC1(2)+ IC1(2)RTC1(2) RTCCHG VCO = 2.5V, C1(2) = 1.3V VCO = 2.5V, C1(2) = 1.3V RTC1(2) = IC1(2)+ / IC1(2)- RTCCHG = IC1+ / IC2+ 12 20 28 μA 12 20 28 μA 0.8 1.0 1.2 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 Thermal shut down hysteresis temperature *1 TTSD ΔTTSD Junction temperature Design target *2 Junction temperature Design target *2 150 180 15 °C °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.A1772-2/7 Package Dimensions unit : mm (typ) 3315 9.75 24 13 LB11685AV 1.5 1.0 Pd max - Ta Specified circuit board : 114.3 ×76.1× 1.6mm3 glass epoxy board 1.05 Allowable power dissipation, Pd max -- W 5.6 7.6 0.5 1 (0.48) 0.8 0.3 12 0.15 (1.3) 1.5MAX 0.1 SANYO : SSOP24J(275mil) 0.55 0.5 0 -40 -20 0 20 40 60 80 100 Ambient temperature, Ta -- C Pin Assignment UOUT 1 (NC) 2 (NC) 3 PGND 4 MCOM 5 (NC) 6 SGND 7 FG 8 RD 9 (NC) 10 VCO 11 CX 12 24 VOUT 23 WOUT 22 (NC) 21 (NC) 20 RF 19 VCC 18 REG 17 VOH 16 FC1 15 FC2 14 C2 13 C1 No.A1772-3/7 Block Diagram LB11685AV 1 2 3 4 Output Switching Control 5 Start Up & Mask Timing 6 7 Power On Reset Motor Lock 8 Detector 9 FG 10 PLL 11 VCO 12 Pre Drive Distributor Reference Voltage Bandgap + - TSD Torque .


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