Electronic Components Datasheet Search |
|
MC33157 Datasheet(PDF) 8 Page - ON Semiconductor |
|
MC33157 Datasheet(HTML) 8 Page - ON Semiconductor |
8 / 12 page MC33157 http://onsemi.com 8 DD V VON U VLO U ref V CPH V 9.2 V typ 3.8 V typ (PREHEAT) STRIKE Frequency SWEEP DETECTION RESET Output OFF STATE 1 0 Rise time w t 1 s w m tph STRIKE lms 7.0 V typ VLO U RESET F1 F2 F3 F1 F2 F3 time OFF STATE f1 = fPH, preheating frequency adjusted by RPH and RENDSWEEP f2 = fENDSWEEP, end of sweep frequency, adjusted by RENDSWEEP (pin 2). In any case f1 w f2 f3 = fOP, operating frequency controlled by the ICO current (pin 7) and capacitor COP tPH = (CPH * 2/3 * Vref) / ( * ItPH) “OFF” state: High side switch OFF, Low side switch ON Figure 9. TIMING DIAGRAM (Normal startup sequence and UVLO reset) Frequency status ref +V CSWP V STRIKE DETECTION RESET FSweep 1 0 F3 time OFF STATE Previous On state When RESET pin is released to a logic one, the system jumps to the preheat frequency as defined by RPH, then executes a frequency sweep down to fENDSWEEP, as defined by RENDSWEEP, and waits until a strike detection signal is applied to pin 9. There is no preheating timing performed after a reset coming from pin 10. RESET logic level is CMOS compatible. Note: Strike detection lever can be either digital – CMOS or analog as depicted here above, as long as the signal fulfills the SDHIGH and SDLOW values and timing. OFF STATE: both output MOSFET are biased in the off condition. 10 s w m F3 V repeats indefinitely No further logic action activated CSWP SD SD Figure 10. TIMING DIAGRAM (External reset) LOW HIGH Output Frequency status |
Similar Part No. - MC33157 |
|
Similar Description - MC33157 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |