AMC8500 Datasheet | Andigilog

Description The a MC8500 is a full featured monolithic brushless DC motor controller containing all the required functions to implement fan speed control. This device features a selectable slope pulse width modulator (PWM) for efficient speed control with analog and digital control signal patibility, programmable minimum speed setting, Hall amplifier with propriety noise immunity circuitry for proper drive sequencing, fixed non-overlapping mutation delay for reduced supply current spiking, dual on-chip 0.5 Ω power MOSFETs with thermal protection for direct motor drive, programmable cycle-by-cycle current limiting, internal fault timer with auto start retry, motor kick start timer to insure start up, bined frequency generator / rotor lock output, unmitted op amp with reference for thermal sensor voltage scaling, and a selectable automatic low current power down mode for power sensitive applications. PRODUCT SPECIFICATION Pin Configuration Phase 2 Output Current Limit Set Hall + 1 2 3 4 5 6 7 8 16 15 14 13 Phase 1 Output Preliminary Specification - Subject to change without notice Preliminary Specification - Subject to change without notice Freq Gen. Rotor Lock Slope Select Power Ground VDD Signal Ground Speed Control Input Op Amp Output Hall Reference Output Minimum Speed Set Non-Inverting Input Inverting Input a MC8500 12 11 10 9 Features - - - - - - - - - - - - - - - - - - - - - - - - Analog and digital speed control signal patibility Programmable minimum speed setting Selectable PWM speed control slope Latching PWM for enhanced noise immunity Integrated fault timer with auto start retry Motor kick start timer bined frequency generator / rotor lock output Differential unbuffered and digital Hall patibility Hall amplifier with propriety noise immunity circuitry Pinned out reference Unmitted op amp for thermal sensor voltage scaling Fixed non-overlapping mutation delay Dual on-chip 0.5 Ω MOSFET motor drives Programmable cycle-by-cycle current limit...