LB1877 Sanyo, LB1877 Datasheet
LB1877
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LB1877 Summary of contents
Page 1
... Ordering number : EN6199A Overview The LB1877M is a motor driver well suited for driving motors of minicassette recorders, headphone stereos, and microcasette recorders that use a 3V power supply. Functions and Features • Brushless sensorless motor drive (3-phase half-wave drive) • Forward/reverse drive possible • ...
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... Output current [RI pin] Current detection precision [U, V, WOUT pins] Output saturation voltage [Thermal] Thermal protection trigger temperature Temperature hysteresis width Note: Items shown to be Target are not measured. LB1877M = 2.4V CC Symbol Conditions ICC1 S/S pin High level ICC2 S/S pin Low level (standby) SSH ...
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... Current feedback resistor connection pin 16 FC Frequency response adjustment pin 17 LB Motor start lockup prevention. Connect to GND via capacitor Pin Assignment VOUT WOUT PGND WB OSC COM GND LB1877M Function LB1877M Top view 20 UOUT VCC OUT 14 VSP ...
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... Block Diagram Transfer current Lockup prevention LB1877M detection Predriver Speed detection start logic Waveform detection Forward/ reverse Current No. 6199-4/7 ...
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... Pin number 18 VCC 1.8V to 5.0V 9 GND 12 VREF 0.7V to 0.9V OSC 1V to Vcc 7 8 COM 1.3V to Vcc 14 VSP 0.1V to Vcc – 0.7V 13 IN+ OUT LB1877M Equivalent circuit 50k 7 200 To comparator input 10k To VOUT To WOUT To UOUT 1k 20k 20k 20k To U,V,WOUT 10k 10k 10k 5k 200 Drive current 10k 200 ...
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... Voltage input not allowed 11 S Vcc Vcc 20 UOUT VOUT 2 WOUT – GND LB1877M Equivalent circuit Drive current pin 16 80k 50k 50k 11 50k 50k 100k 17 200 Unit (resistance: , capacitance: F) Pin function Frequency characteristics adjustment pin ...
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... This catalog provides information as of June, 1999. Specifications and information herein are subject to change without notice. LB1877M Equivalent circuit Pin function Base pins for differential ...