Datenblatt-Suchmaschine für elektronische Bauteile |
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ML4425CP Datenblatt(PDF) 2 Page - Fairchild Semiconductor |
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ML4425CP Datenblatt(HTML) 2 Page - Fairchild Semiconductor |
2 / 16 page ML4425 PRODUCT SPECIFICATION 2 REV. 1.0.2 7/2/01 Pin Description Pin Name Function 1ISENSE Motor current sense input. When ISENSE exceeds 0.2 ↔ ILIMIT, the output drivers LA, LB, and LC are shut off for a fixed time determined by CIOS. 2HA Active low output driver for the phase A high-side switch. 3HB Active low output driver for the phase B high-side switch. 4HC Active low output driver for the phase C high-side switch. 5 SPEED COMP Speed control loop compensation is set by a series resistor and capacitor from SPEED COMP to GND. 6CT A capacitor from CT to GND sets the PWM oscillator frequency. VREF 6.9V reference voltage output. 8 SPEED SET Speed loop input which ranges from 0 (stopped) to VREF (maximum speed). 9 LA Active high output driver for the phase A low-side switch. 10 LB Active high output driver for the phase B low-side switch. 11 LC Active high output driver for the phase C low-side switch. 12 ILIMIT Voltage on this pin sets the ISENSE threshold voltage at 0.2 ↔ ILIMIT, leaving this pin unconnected selects an internally set threshold. 13 VCO/TACH This TTL level output corresponds to the signal used to clock the commutation state machine. The output frequency is proportional to the motor speed when the back- EMF sensing loop is locked onto the rotor position. 14 VDD 12V power supply input. 15 CVCO A capacitor to GND sets the voltage-to-frequency ratio of the VCO. Pin Configuration 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 ISENSE HA HB HC SPEED COMP CT VREF SPEED SET LA LB LC ILIMIT VCO/TACH VDD GND RREF CIOS BRAKE FB C FB B FB A CRR SPEED FB CRT UV FAULT CAT RVCO CVCO TOP VIEW ML4425 28-Pin Narrow PDIP (P28N) 28-Pin SOIC (S28) |
Ähnliche Teilenummer - ML4425CP |
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Ähnliche Beschreibung - ML4425CP |
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