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參數(shù)資料
| 型號(hào)： | R5101G004A |
| 廠(chǎng)商： | RICOH COMPANY LTD |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | Microprocessor power management with Watchdog Timer |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | 0.65 MM PITCH, SSOP-8 |
| 文件頁(yè)數(shù)： | 16/16頁(yè) |
| 文件大?。?/td> | 233K |
| 代理商： | R5101G004A |
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R5101G
9
TYPICAL APPLICATION
R5101GxxxSeries
con.
SCK
CD
CTW
VDD
RESET
CE
GND
VOUT
RESET
DOUT
510k
1
F
1
F
CW(0.01
F)
CD(0.001
F)
VDD
TECHNICAL NOTES
Use a 0.01F or more value of an external capacitor, CW for setting watchdog and reset time-out periods.
Use 1F or 2.2F capacitor between VDD and GND, and between VOUT and GND and make its wiring as
short as possible.
Make VDD and GND lines sufficient.
Power noise may a cause of incorrect operation of the watchdog timer, because the built-in detector
supervises the built-in regulator output, therefore the noise may be detected.
If the capacitance for CTW pin is too large, pick-up noise may be result.
To avoid the mis-operation, during watchdog timer monitoring time, there is some ignoring time against
clock pulse. Therefore, during the ignoring time, input clock pulse (rising edge trigger) is ignored. The ignoring
time is approximately as follows:
1) The time interval for VCTW pin voltage from VREF2H to (VREF2H-VREF2H/20)
2) The time interval for VCTW pin voltage from VREF2L+VREF2L/20 to VREF2L
* If an equal or less than 100us-width "L" pulse is input to the CE pin, the error reset may output. The equal or less than
100us width "L" pulse caused by some noise or something against the CE pin must be avoided.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5101G005A | 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:Microprocessor power management with Watchdog Timer |
| R5101GXXXA | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Power Management ICs |
| R5102B | 制造商:Electro-Term/Hollingsworth 功能描述: |
| R5102V | 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:LDO Regulators with a Watchdog Timer |
| R5102V001A | 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:LDO Regulators with a Watchdog Timer |
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