Motore di ricerca datesheet componenti elettronici |
|
STK672-610 Scheda tecnica(PDF) 6 Page - ON Semiconductor |
|
STK672-610 Scheda tecnica(HTML) 6 Page - ON Semiconductor |
6 / 19 page STK672-610 No. A0756-6/19 • Motor current peak value IOH setting • When R02 is open IOH= [Vref×1k/1k+3.9k)] ÷Rs= (Vref÷4.9) ÷Rs The values 1k and 3.9k represent internal driver resistance values, while Rs represents the internal driver current detection resistance. Vref= (4.9k ÷ (4.9k+R01)) ×5V (or 3.3V) =IOH×4.9×Rs The value 4.9k represents the series resistance value of the internal driver values of 1k and 3.9k. • If R02 is connected IOH= [Vref×1k/ (1k+3.9k)] ÷Rs= (Vref÷4.9) ÷Rs The values 1k and 3.9k represent the internal driver resistance values, while Rs represents the internal driver current detection resistance. Vref= (R0x ÷ (R01+R0x)) ×5V (or 3.3V) =IOH×4.9×Rs = [(4.9k ×R02) ÷ ((4.9k×R02) +R01× (4.9k+R02))] ×5V(or 3.3V) R0x= (4.9k ×R02) ÷ (4.9k+R02) Rs represents the current detection resistance inside the HIC, while the value 4.9k in the formula above represents the internal resistance value of the Vref pin. Rs=0.141 Ω when using the STK672-600 Rs=0.089 Ω when using the STK672-610 Input Pin Functions Pin Name Pin No. Function Input Conditions When Operating CLOCK 12 Reference clock for motor phase current switching Operates on the rising edge of the signal (MODE2=H) MODE1 10 Low: 2-phase excitation High: 1-2 phase excitation MODE2 17 Excitation mode selection High: Rising edge Low: Rising and falling edge CWB 13 Motor direction switching Low: CW (forward) High: CCW (reverse) RESETB 14 System reset and A, AB, B, and BB outputs cutoff. Applications must apply a reset signal for at least 10 μs when VDD is first applied. A reset is applied by a low level ENABLE 15 The A, AB, B, and BB outputs are turned off, and after operation is restored by returning the ENABLE pin to the high level, operation continues with the same excitation timing as before the low-level input. The A, AB, B, and BB outputs are turned off by a low- level input. (1) A simple reset function is formed from D1, CO4, RO3, and RO4 in this application circuit. With the CLOCK input held low, when the 5V supply voltage is brought up a reset is applied if the motor output phases A and BB are driven. If the 5V supply voltage rise time is slow (over 50ms), the motor output phases A and BB may not be driven. Increase the value of the capacitor CO2 and check circuit operation again. (2) See the timing chart for the concrete details on circuit operation. 5V R01 R02 R3 5V R01 R02 R3 Vref Vref IOH 0 |
Codice articolo simile - STK672-610 |
|
Descrizione simile - STK672-610 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |