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STK672-120-E Dataheets PDF



Part Number STK672-120-E
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Two-Phase Stepping Motor Driver
Datasheet STK672-120-E DatasheetSTK672-120-E Datasheet (PDF)

Ordering number : EN6042A STK672-120-E Thick-Film Hybrid IC Unipolar Fixed-Current Chopper (Self-Excited PWM) Scheme and Built-in Phase Signal Distribution IC Two-Phase Stepping Motor Driver (Square Wave Drive) Output Current 2.4A http://onsemi.com Overview The STK672-120-E is a unipolar fixed-current chopper type 2-phase stepping motor driver hybrid IC. It features power MOSFETs in the output stage and a built-in phase signal distribution IC. The incorporation of a phase distribution IC allo.

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Ordering number : EN6042A STK672-120-E Thick-Film Hybrid IC Unipolar Fixed-Current Chopper (Self-Excited PWM) Scheme and Built-in Phase Signal Distribution IC Two-Phase Stepping Motor Driver (Square Wave Drive) Output Current 2.4A http://onsemi.com Overview The STK672-120-E is a unipolar fixed-current chopper type 2-phase stepping motor driver hybrid IC. It features power MOSFETs in the output stage and a built-in phase signal distribution IC. The incorporation of a phase distribution IC allows the STK672-120-E to control the speed of the motor based on the frequency of an external input clock signal. It supports two types of excitation for motor control: 2-phase excitation and 1-2 phase excitation. It also provides a function for switching the motor direction. Applications • Two-phase stepping motor drive in send/receive facsimile units • Paper feed in copiers, industrial robots, and other applications that require 2-phase stepping motor drive Features • The motor speed can be controlled by the frequency of an external clock signal (the CLOCK pin signal). • The excitation type is switched according to the state (low or high) of the MODE pin. The mode is set to 2-phase or 1- 2 phase excitation on the rising edge of the clock signal. • A motor direction switching pin (the CWB pin) is provided. • All inputs are schmitt inputs and 40kΩ (typical: –50 to +100%) pull-up resistors are built in. • The motor current can be set by changing the Vref pin voltage. Since a 0.165Ω current detection resistor is built in, a current of 1A is set for each 0.165V of applied voltage. • The input frequency range for the clock signal used for motor speed control is 0 to 25kHz. • Supply voltage ranges: VCC = 10 to 42V, VDD = 5.0V ±5% • This IC supports motor operating currents of up to 2.4A at Tc = 105°C, and of up to 4.0A at Tc = 25°C. Semiconductor Components Industries, LLC, 2013 June, 2013 61108HKIM/12299RM (OT) No.6042-1/9 STK672-120-E Specifications Maximum Ratings at Tc = 25°C Parameter Maximum supply voltage 1 Maximum supply voltage 2 Input voltage Output current Repeated avalanche capacity Allowable power dissipation Operating substrate temperature Junction temperature Storage temperature Symbol VCC max VDD max VIN max IOH max Ear max Pd max Tc max Tj max Tstg Conditions No signal No signal Logic input pins VDD = 5V, CLOCK ≥ 200Hz With an arbitrarily large heat sink. Per MOSFET Ratings 52 -0.3 to +7.0 -0.3 to +7.0 4.0 36 8.5 105 150 -40 to +125 Unit V V V A mJ W °C °C °C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Allowable Operating Ranges at Ta = 25°C Parameter Maximum supply voltage 1 Maximum supply voltage 2 Input voltage Output current 1 Symbol VCC VDD VIH IOH1 Output current 2 Clock frequency Phase driver withstand voltage IOH2 fCL VDSS Conditions With signals applied With signals applied Tc = 105°C, CLOCK ≥ 200Hz Tc = 80°C, CLOCK ≥ 200Hz See the motor curren (IOH) derating curve Minimum pulse width: 20μs ID = 1mA (Tc = 25°C) Ratings 10 to 42 5.0 ± 5% 0 to VDD 2.4 3.0 0 to 25 100 min Unit V V V A A kHz V Electrical Characteristics at Tc = 25°C, VCC = 24V, VDD = 5V Parameters Symbols Conditions VDD supply current ICCO CLOCK = GND Output average current Ioave With R/L = 3Ω/3.8mH in each phase Vref = 0.176V FET diode forward voltage Vdf If = 1A (RL = 23Ω) Output saturation voltage Vsat RL = 23Ω High-level input voltage VIH Pins 6 to 9 (4 pins) Low-level input voltage VIL Pins 6 to 9 (4 pins) Input current With pins 6 to 9 at the ground level. IIL Pull-up resistance: 40kΩ (typical) Vref input voltage VrH Pin 12 Vref input bias current IIB With pin 12 at 1V Note: A fixed-voltage power supply must be used. Package Dimensions unit:mm (typ) 4167 min 0.56 4.0 Rating typ 2.6 0.62 1.1 0.4 62 125 0 50 max 6 0.69 1.7 0.56 1.0 250 3.5 500 unit mA A V V V V μA V nA 46.6 41.2 8.5 12.7 25.5 4.0 1.0 3.6 1 12 2.0 0.5 (9.6) 11 2=22 0.4 2.9 No.6042-2/9 STK672-120-E Internal Equivalent Circuit Block Diagram ITF02596 No.6042-3/9 VDD 10 MODE 8 CLOCK 9 CWB 7 RESETB 6 Excitation mode selection Phase advance counter Off time setting Phase excitation signal generation Chopping circuit Vref 12 SP 11 A 5 F1 AB 4 F2 B 3 F3 BB 2 F4 + VrefA - R1 C1 RsA R2 RsB + VrefB - C2 1 GND SUB Sample Application Circuit STK672-120-E VDD=5V CLOCK MODE CWB 5V RO3 D1 + CO4 10μF STK672-120-E 10μF CO3 + 10 9 8 7 A 5 AB 4 Two-phase stepping motor RESETB 5V 6 B 3 BB 2 RO1 Vref RO2 0.1μF CO1 12 11 GND 1 VCC 24V + CO2 At least 100μF P.GND ITF02597 • To minimize noise in the 5V system, locate the ground side of capacitor CO2 in the above circuit as close as possible to pin 1 of the IC. • Insert resistor RO3 (47 to 100Ω) so that the discharge e.


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