lb11889m Sanyo Semiconductor Corporation, lb11889m Datasheet
lb11889m
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lb11889m Summary of contents
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... Ordering number : EN8791 LB11889M Overview The LB11889M is three-phase brushless motor driver for VCR capstan motors. Features • 3-phase full-wave current linear drive. • Torque ripple correction circuit (fixed correction ratio). • Current limiter circuit with control characteristics gain switching. • Output stage upper/lower oversaturation prevention circuit (No external capacitor required). ...
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... TSD operating temperature T-TSD ∆TSD TSD temperature hysteresis width Note 1. No measurements are made on the parameters with Note (Design target). LB11889M Conditions ∞, VCTL = 0V, VLIM = 0V (at static mode 500mA 0.5Ω, sink+source VCTL = VLIM = 5V (With saturation prevention 1.0A 0.5Ω, sink+source ...
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... Note 2. The torque ripple correction factor is obtained based on the voltage waveform across Rf as shown below. I Correnction factor = Package Dimensions unit : mm (typ) 3280A 15 0.35 0.8 (0.8) SANYO : MFP36SLF(375mil) LB11889M III Each hall logic setting 2× (Vp-Vb) ×100 (%) Vp+Vb 1.0 0.95W Independent IC 0.8 0.6 0.4 0.25 0 GND lebel Pd max - Ta 0 ...
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... Note) Since this drive scheme is the 180° energizing scheme, phases other than Sink, Source phases are not turned OFF. Control Function & Current Limiter Function Control characteristics VLIM = 5V CTLREF : OPEN I OUT Gm1 = 0.65A/Vtyp 2.35Vtyp 3.15Vtyp LB11889M Hall input ...
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... GND common impedance exerts on Rf can be excluded. (Must not be left open Forward/reverse select pin. This pin voltage determines forward/reverse. (Vth = 2.5V typ 5V) GND 34 GND for other than output transistors. The lowest potential of output transistors is on the Rf pin. LB11889M Functions (With spark killer diode built in) No.8791-5/11 ...
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... Pin name U IN (+) U IN (-) V IN (+) V IN (-) W IN (+) W IN (-) U OUT V OUT W OUT VS Rf (POWER) Rf (SENSE) CTL LIM CTLREF FR ADJ LB11889M Input/Output equivalent circuit Each (+) input 200 Ω VS Each OUT 200 Ω Rf (POWER CTL 200 Ω 200 Ω ADJ 200 Ω 1 Each (-) input 200 Ω ...
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... Continued from preceding page. Pin name FG IN (-) FG IN (+) FG OUT FC LB11889M Input/output equivalent circuit (-) 300Ω OUT 300 Ω (+) No.8791-7/11 ...
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... Control amplifier CTL + CTLREF - 7 Control amplifier 2 LIM 8 Forward FR 33 /reverse select GND LB11889M 9 FC Anti-logarithm & differential distribution Upper saturation prevention control + gm - Differential distribution & torque ripple correction block Feedback + amplifier + + - gm - LIMREF TSD Reference voltage Bandgap 1 ...
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... 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 externally for ground potential stabilization. LB11889M CTL 6 7 LIM (+) 10 LB11889M U IN (-) (+) (-) (+) (-) Top view 36 ...
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... Sample Application Circuit LB11889M 104µF No.8791-10/11 ...
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... SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 2006. Specifications and information herein are subject to change without notice. LB11889M PS No.8791-11/11 ...