LB1987H SANYO [Sanyo Semicon Device], LB1987H Datasheet
LB1987H
Related parts for LB1987H
LB1987H Summary of contents
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... Ordering number : ENN6109A Overview The LB1987, LB1987D, LB1987M, and LB1987H are optimal capstan motor drivers for use in VCR sets. Functions • Three-phase full-wave current-linear drive • Torque ripple correction circuit (fixed correction ratio) • Current limiter circuit with control characteristics gain switching • ...
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... FG amplifier output saturation voltage Vosat(FG) At the sink side internal pull-up resistor. FG amplifier common-mode input voltage VCM(FG) LB1987, 1987D, 1987M, 1987H Symbol Conditions V max CC V max S I max O (LB1987) (LB1987D) Pd max (LB1987M) (LB1987H) Topr Tstg Symbol Conditions Between Hall inputs HALL V Relative to the control system ground GSENSE = Conditions RL = ∞ ...
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Continued from preceding page. Parameter Symbol [Saturation Prevention] Saturation prevention circuit Vosat(DET) lower side voltage setting [Schmitt Amplifier] Duty ratio DUTY Upper side output saturation voltage Vsatu(SH) Lower side output saturation voltage Vsatd(SH) Hysteresis Vhys Thermal shutdown operating T-TSD temperature ...
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Control and Current Limiting Functions Control characteristics Gm1 = 0.65 A/V typ Gm1 = 0.65 A/Vty 2.35 V typ 3.15 V typ 2.35 Vtyp 3.15 Vtyp Pin Functions Pin phase Hall element ...
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Continued from preceding page. Pin Forward/reverse selection. The direction (forward or reverse) is selected by the voltage applied to this FR pin. (Vth = 2.5 Vtyp External torque ripple correction ratio adjustment. To adjust ...
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Pin Assignment 23 22 RF(PWR OUT 28 V OUT OUT 32 RF(SENSE) 33 GSENSE Note: The FRAME pins must be connected to ground for ground potential stabilization. 1.0 ...
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Pin Assignment 3.5 3.0 2.5 2.0 1.5 1.0 0.5 LB1987, 1987D, 1987M, 1987H LB1987D max — Ta 3.0 W ...
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Pin Assignment Note: Although the FRAME pins and the GND pin are not connected internally in the IC, the FRAME pins must be connected to the GND pin ...
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... Pin Assignment 1.0 0.8 0.6 0.4 0.2 LB1987, 1987D, 1987M, 1987H LB1987H max — Ta 0. – Ambient temperature, Ta — ° Top view 80 100 No. 6109-9/17 A12215 ...
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Block Diagram Inverse logarithmic conversion and differential distribution Synthesized output logarithmic compression Hall input synthesis block (Linear matrix) LB1987, 1987D, 1987M, 1987H No. 6109-10/17 ...
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Sample Application Circuit (LB1987) LB1987, 1987D, 1987M, 1987H No. 6109-11/17 ...
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Sample Application Circuit (LB1987D) LB1987, 1987D, 1987M, 1987H No. 6109-12/17 ...
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Sample Application Circuit (LB1987M) LB1987, 1987D, 1987M, 1987H FRAME FRAME FRAME FRAME GND W IN – RF(PWR – OUT U IN – V OUT U IN ...
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... Sample Application Circuit (LB1987H) LB1987, 1987D, 1987M, 1987H – LIM CTL FGS V IN – FG OUT – – GND GND FRAME FRAME VS GND GND FR GSENSE OUT NC W OUT V OUT No. 6109-14/17 ...
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Test Circuit 1 0.5 LB1987, 1987D, 1987M, 1987H FRAME FRAME FRAME FRAME GND W IN – RF(PWR – OUT U IN – ...
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Test Circuit 2 LB1987, 1987D, 1987M, 1987H FRAME FRAME FRAME FRAME GND W IN – RF(PWR – OUT U IN – V OUT ...
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LB1987, 1987D, 1987M, 1987H Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of ...