PDF LB11885 Data sheet ( Hoja de datos )

Número de pieza	LB11885
Descripción	3-in-1 Motor Driver
Fabricantes	Sanyo Electric
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No Preview Available ! www.DataSheet4U.com Ordering number : EN7884A LB11885 Monolithic Digital IC Three-in-One Motor Driver for Portable VCR Overview LB11885 is a three-in-one motor driver for portable VCR. Features • Capstan motor drive unit 3-phase, 120 degrees full conducting, direct PWM drive Built in PWM oscillator Current limiter (It is fixed internally and setup externally.) Forward/reverse rotation 2 levels FG amplifier (Built-in gain resistor) Control amplifier output pin • Drum motor drive unit 3-phase, 120 degrees full conducting soft switching sensorless drive FG sensorless function 2 levels PG amplifier FG and PG mixing output (Separated output is also possible.) • Loading motor drive unit H-bridge forward/reverse rotation Motor voltage switch Short brake Input control for 3 values • Common unit Over-heat protection function (Thermal Shut Down) Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor products described or contained herein. 11707 TI IM B8-6143, B8-6059 No.7884-1/18 1 page www.DataSheet4U.com Block Diagram C_HU+ LB11885 FRC C_VCC C_HU- C_HV+ C_HV- C_HW+ MATRIX & LOGIC C_HW- C_FGIN C_FGOUT C_FG 680pF VCC 250kΩ 5kΩ - 2.5kΩ + 2.5kΩ - + C_PWM OSC SGND D_FGOUT VREG TSD QR S Rotor position detector circuit C_UOUT C_VOUT C_WOUT C_Rfp VC C_Rfs C_CNT C_LIM C_MGND C_FC D_VCC D_COM 2200pF D_C1 D_C2 2200pF Start control circuit Mask circuit Timing control circuit Soft switching driver circuit D_UOUT D_VOUT 560kΩ D_PCOUT D_VCOIN 0.47µF D_CX 0.022µF D_CNT 0.1µF PLL 200Ω VCO D_FC Divider 1kΩ TSD D_WOUT 0.022µF Upper saturation prevention control D_Rf 0.5Ω D_MGND L_VCC 200Ω 200Ω D_PG+ D_PG- D_PGOUT1 D_PGOUT2 L_IN L_VREF L_OUT1 L_MGND L_OUT2 No.7884-5/18 5 Page www.DataSheet4U.com LB11885 Continued from preceding page. Pin Symbol Pin voltage No 22 D-PGOUT1 Pin Description Drum PG amplifier linear output pin Equivalent Circuit VCC 5kΩ 300Ω 500Ω 22 33 D-PGOUT2 Drum PG Schmidt amplifier output pin 34 D-FGOUT Drum motor reverse counter- electromotive voltage detection output pin (three-phase synthesizing) VCC 33 5kΩ VCC 5kΩ 34 26 D-VCOIN 25 D-PCOUT VCO circuit voltage input pin of drum block. The PCOUT pin voltage is input via CR filter. 1kΩ 26 VCO circuit PLL output pin of drum block. VCC VCC 4.7kΩ 25 Continued on next page. No.7884-11/18 11 Page

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