LB1928 Sanyo Semiconductor Corporation, LB1928 Datasheet
LB1928
Related parts for LB1928
LB1928 Summary of contents
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... Ordering number : ENN6198A Overview The LB1928 is a 3-phase brushless motor driver well suited for drum and paper feed motors in laser printers, plain-paper copiers and other office automation equipment. Direct PWM drive allows control with low power losses. Peripheral circuitry including speed control circuit and FG amplifier is integrated, thus allows drive circuit to be constructed with a single chip ...
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... Output High level voltage Output Low level voltage Count number [PLL output] Output High level voltage Output Low level voltage [Lock detection] Output Low level voltage Lock range LB1928 Symbol Conditions Icc1 Icc2 In STOP mode Vosat1 Io = 1.0A, Vo(SINK) + Vo(SOURCE) Vosat2 Io = 2.0A, Vo(SINK) + Vo(SOURCE) ...
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... Hysteresis width High level input current Low level input current [Forward/reverse pin] High level input voltage range Low level input voltage range Input open voltage Hysteresis width High level input current Low level input current LB1928 Symbol Conditions I B(INT –0.2 mA OH(INT) INTO ...
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... LB1928 F/R = “L” F/R = “H” IN2 IN3 IN1 IN2 IN1+ IN1– GND1 S/S FGIN+ FGIN– FGOUT LB1928 INTOUT INTIN POUT DOUT VM VREG PWM CSD XI Pd max – Ambient temperature, Ta – fosc/8192 IN3 Top view 100 120 No. 6198-4/11 ...
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... Equivalent Circuit Block Diagram LB1928 No. 6198-5/11 ...
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... Pin number 28 OUT1 OUT2 OUT3 2 3 GND2 VREG 7 PWM VREG VREG 8 CSD 9 XI VREG 10 XO LB1928 Equivalent circuit 300 A12983 A12984 200 7 2k A12985 300 8 1k A12986 10 9 A12987 Pin function Motor drive output pins. Connect a Schottky diode between these outputs and V ...
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... Continued from preceding page Pin name Pin number INT 11 VREG OUT PWM comparator INT 12 VREG IN POUT 13 DOUT VREG LB1928 Equivalent circuit 11 A12988 300 12 A12989 VREG 300 13 A12990 VREG 300 14 A12991 15 A12992 Pin function Integrator output pin (speed control pin) Integrator input pin. ...
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... S/S 19 VREG GND1 20 IN1+ 22 IN1– 21 IN2+ 24 IN2– IN3+ 26 IN3– 25 F/R 27 VREG LB1928 Equivalent circuit 16 A12993 300 300 17 A12994 2k 19 A12995 VREG 300 300 A12996 2k 27 A12997 Pin function FG amplifier output pin. FG amplifier input pin. By connecting a capacitor (approx. 0.1 F) between FGIN+ and ground, the logic circuitry is reset ...
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... Crystal oscillator frequency 2. Output drive circuit In order to reduce power loss at the output, the LB1928 uses the PWM drive technique. While ON, the output transistors are always saturated, and motor drive power is adjusted by varying the output ON duty ratio. Because output PWM switching is performed by the lower-side output transistor, a Schottky diode must be connected between OUT and V ...
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... The magnitude of the current is determined by the motor counterelectromotive voltage and the coil resistance. This current may not exceed the rated current (3.1A). (Forward/reverse switching at high speed therefore is not safe.) LB1928 (Reference values ...
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... This catalog provides information as of December, 1999. Specifications and information herein are subject to change without notice. LB1928 pin and ground to assure stable operation diode ...