- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄230926 > R5107N181A-TR-FE (RICOH COMPANY LTD) 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 PDF資料下載
參數(shù)資料
| 型號(hào)： | R5107N181A-TR-FE |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | HALOGEN FREE AND ROHS COMPLIANT, SSOP-8 |
| 文件頁數(shù)： | 6/40頁 |
| 文件大?。?/td> | 517K |
| 代理商： | R5107N181A-TR-FE |
第1頁第2頁第3頁第4頁第5頁當(dāng)前第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
R510xx
14
(3) Unless the SCK pulse is input, WDT will not be cleared, and during the charging period of CTW pin,
RESETB
="L".
(4) When the VDD pin becomes lower than the detector threshold voltage(-VDET), RESETB outputs "L".
Watchdog Timeout period/Reset hold time
The watchdog timeout period and reset hold time can be set with an external capacitor to CTW pin.
The next equations describe the relation between the watchdog timeout period and the external capacitor
value, or the reset hold time and the external capacitor value.
tWD (s)
= 3.1×106×C (F)
tWR (s)
= tWD/9
The watchdog timer (WDT) timeout period is determined with the discharge time of the external capacitor.
During the watchdog timeout period, if the clock pulse from the system is detected, WDT is cleared and the
capacitor is charged. When the charge of the capacitor completes, another watchdog timeout period starts
again. During the watchdog timeout period, if the clock pulse from the system is not detected, during the next
reset hold time RESETB pin outputs "L".
During the reset time, (while charging the external capacitor) and after starting the watchdog timeout period,
(just after from the discharge of the external capacitor) even if the clock pulse is input during the time period
"tWDI", the clock pulse is ignored.
tWDI (s)
= tWD/10
Released Delay Time (Power-on Reset delay time)
The released delay time can be set with an external capacitor connected to the CD pin. The next equation
describes the relation between the capacitance value and the released delay time (tPLH).
tPLH (s)
=3.7×106× C (F)
When the VDD voltage becomes equal or less than (-VDET), discharge of the capacitor connected to the CD pin
starts. Therefore, if the discharge is not enough and VDD voltage returns to (+VDET) or more, thereafter the delay
time will be shorter than tPLH which is expected.
Power on Reset Operation against the input glitch (tPLH1<tPLH)
VDD
VCD
VRESETB
Complete
Discharge
+VDET
-VDET
+VTCD
-VTCD
tPLH1
0V
tPLH
Incomplete
Discharge
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RS5RJ5721-T2 | 0.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8 |
| RS5RJ3323-T1 | 0.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8 |
| RS5RJ5124-T2 | 0.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8 |
| RS5RJ2629-T1 | 0.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8 |
| RS5RM3929-T2 | 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5108 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:PHOTOMULTlPLlER TUBE |
| R5108_03 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:PHOTOMULTIPLIER TUBE 28 mm (1-1/8 Inch) Transmission Mode S-1 Photocathode, Side-on Type |
| R5108G | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Microprocessor Supervisory Circuit |
| R51-0F..00199737 | 制造商:Sensata Technologies 功能描述:R51-0F..00199737 /POLE # 2 /PROD FAMILY: 0213 |
| R51-0F..00205532 | 制造商:Sensata Technologies 功能描述:R51-0F..00205532 /POLE # 2 /PROD FAMILY: 0213 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。