lb1877m Sanyo Semiconductor Corporation, lb1877m Datasheet
lb1877m
Related parts for lb1877m
lb1877m 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 • ...
Page 2
... V, WOUT pins] Output saturation voltage Vsat [Thermal] Thermal protection trigger temperature TTSD Temperature hysteresis width TTSD Note: Items shown to be Target are not measured. 0.8 0.6 0.5 0.4 0.2 0 –10 LB1877M = 2.4V CC Conditions min S/S pin High level S/S pin Low level (standby) Start 1.5 Stop 0 Reverse 1.5 Normal direction 0 Output current 0 A ...
Page 3
... Frequency response adjustment pin 17 LB Motor start lockup prevention. Connect to GND via capacitor Pin Assignment VOUT WOUT PGND OSC COM GND RI LB1877M Function 20 1 UOUT VCC LB1877M 15 6 OUT 14 7 VSP VREF 11 10 S/S Top view No. 6199-3/7 ...
Page 4
... Block Diagram Predriver Transfer current start logic Waveform detection Lockup prevention LB1877M Current detection Speed detection Forward/ reverse No. 6199-4/7 ...
Page 5
... GND 9 12 VREF 0.7V to 0.9V 7 OSC 1V to Vcc COM 1.3V to Vcc 8 14 VSP 0.1V to Vcc – 0.7V 13 IN+ OUT LB1877M Equivalent circuit 12 50k 7 200 To comparator input 10k 8 To VOUT To WOUT To UOUT 1k 20k 20k 20k 20k To U,V,WOUT 10k 10k 10k 14 5k 200 Drive current ...
Page 6
... 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 ...
Page 7
... 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 ...