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LB1674V Dataheets PDF



Part Number LB1674V
Manufacturers Sanyo
Logo Sanyo
Description Brushless / Sensorless Motor Driver
Datasheet LB1674V DatasheetLB1674V Datasheet (PDF)

Ordering number: EN4392A Monolithic Digital IC LB1674V Brushless, Sensorless Motor Driver Overview The LB1674V is a small motor driver ideal for mini-cassettes, headphone stereos and micro-cassettes. Package Dimensions unit : mm 3175A-SSOP24 [LB1674V] Functions and Features c c c c c 3-phase unipolar, brushless, sensorless motor driver Reverse function Built-in speed control function (V servo) Built-in reference voltage (0.5 V) Soft switching driver SANYO : SSOP24 Specifications Absolute.

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Ordering number: EN4392A Monolithic Digital IC LB1674V Brushless, Sensorless Motor Driver Overview The LB1674V is a small motor driver ideal for mini-cassettes, headphone stereos and micro-cassettes. Package Dimensions unit : mm 3175A-SSOP24 [LB1674V] Functions and Features c c c c c 3-phase unipolar, brushless, sensorless motor driver Reverse function Built-in speed control function (V servo) Built-in reference voltage (0.5 V) Soft switching driver SANYO : SSOP24 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Output transistor withstand voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Vsus Im max Pd max Topr Tstg Tj = 125°C Conditions Ratings 5 10 0.6 0.4 0 to + 80 –40 to + 125 Unit V V A W °C °C Allowable Operating Range at Ta = 25°C Parameter Supply voltage Symbol VCC Conditions Ratings 1.0 to 3.5 Unit V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 83096HA(II)/90793TS No.4392-1/6 LB1674V Electrical Characteristics at Ta = 25°C, VCC = 1.5 V, unless otherwise noted Parameter Supply current Reference voltage Symbol ICC START pin: high START pin: low 0.47 Conditions min typ 6.5 0 0.50 1 –0.2 –0.06 0.01 140 –5 155 170 +5 3 max 10 10 0.53 1.5 Unit mA µA V %/V mV/µA %/°C mV % %/V %/°C 100 0.27 45 0.25 0.3 65 mV ms µA V V V µA Vref ∆Vref Reference-voltage characteristic / ∆VCC VCC = 1.0 to 3.5 V Vref Reference-voltage load characteristics Reference-voltage temperature characteristics Speed signal detection accuracy Speed signal interphase error Speed-signal voltage characteristics Speed-signal temperature characteristics Current detection accuracy Current detection ratio Starting pulse period COM* lead-in current Output saturation voltage Logic input high-level voltage Logic input low-level voltage TC pin lead-in current ∆Vref ∆Iref ∆Vref / ∆Ta Vref Vsp Iref = 0 to –50 µA Ta = 0 to 80°C VIN = 750 mV ∆Vsp / ∆VCC VCC = 1.0 to 3.5 V Vsp ∆Vsp / ∆Ta Vsp VRI KI TS ICOM* Vsat VH VL ITC VIN = 0.75 V, Ta = 0 to 80°C VIN1 = 0.3 V, VIN2 = 1.0 V, RI = 330 Ω VIN1 = 0.3 V, VIN2 = 1 to 1.3 V CS = 0.1 µF VCC = 1.0 V, Im = 0.3 A 0.9 35 70 0.17 25 2 0.05 85 0.22 32 35 0.15 50 Allowable power dissipation, Pd max – W Pd max – Ta Ambient temperature, Ta – °C Pin Assignment Top view No.4392-2/6 LB1674V Equivalent Circuit Block Diagram Supply bias Oscillator circuit Reference voltage Commutation and starting logic Soft switch Pre-driver Start detector Speed detector Error amplifier Current detector Sample Application Circuits at VCC = 1.5 V Note: PU, PV and PW are internal operation measurement pins. Unit (resistance: Ω, capacitance: F) No.4392-3/6 LB1674V Pin Description Unit (resistance: Ω) Pin Number 1 3 23 Pin Name V W U Equivalent Circuit Description c Motor coil connection pins 2 22 24 DW DU DV c Power transistor base pins 4 5 GND OSC .


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