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STK672-523-E データシート(PDF) 5 Page - ON Semiconductor |
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STK672-523-E データシート(HTML) 5 Page - ON Semiconductor |
5 / 22 page STK672-523-E No. A2110-5/22 Precautions [GND wiring] • To reduce noise on the 5V system, be sure to place the GND of C01 in the circuit given above as close as possible to Pin 1 of the hybrid IC. Also, the GND side of RO2 must be directly wired from P.GND terminal Pin 1 in order to accurately set the current. [Input pins] • Insert resistor RO3 (47 to 100Ω) so that the discharge energy from capacitor CO2 is not directly applied to the CMOS IC in this hybrid device. If the diode D1 has Vf characteristics with Vf less than or equal to 0.6V (when If = 0.1A), this will be smaller than the CMOS IC input pin diode Vf. If this is the case RO3 may be replaced with a short without problem. • Apply 2.5V High level input to pins 8, 9, 10, 11, and 12. • If VDD is being applied, use care that each input pin does not apply a negative voltage less than -0.3V to P.GND, Pin 1, and do not apply a voltage greater than or equal to VDD voltage. • Since the input pins do not have built-in pull-up resistors, when the open-collector type pins 8, 9, 10, 11, and 12 are used as inputs, a 10 to 47k Ω pull-up resistor (to VDD) must be used. At this time, use a device for the open collector driver that has output current specifications that pull the voltage down to less than 0.6V at Low level. [Current setting Vref] • In consideration of the specifications of the Vref input bias current, IIB, a resistance from several kΩ to 100kΩ is recommended for RO1. • If the motor current is temporarily reduced, the circuit given below (STK672-523: IOH>0.09A) is recommended. • Although the driver is equipped with a fixed current control function, it is not equipped with an overcurrent protection function to ensure that the current does not exceed the maximum output current, IOH max. If Vref is mistakenly set to a voltage that exceeds IOH max, the driver will be damaged by overcurrent. 5V RO1 RO2 R3 5V RO1 RO2 R3 Vref Vref |
同様の部品番号 - STK672-523-E |
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同様の説明 - STK672-523-E |
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