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參數(shù)資料
| 型號(hào)： | PI4S809SW |
| 廠商： | PERICOM SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO3 |
| 封裝： | TO-236AB, SOT-23, 3 PIN |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 463K |
| 代理商： | PI4S809SW |
1
P-0.2
02/24/05
ADVANCE INFORMATION, COMPANY CONFIDENTIAL
Features
Precision supply-voltage monitor
- 4.63V (PI4S8xxL)
- 4.38V (PI4S8xxM)
- 3.08V (PI4S8xxT)
- 2.93V (PI4S8xxS)
- 2.63V (PI4S8xxR)
- 2.32V (PI4S8xxZ)
- 2.20V (PI4S8xxY)
200ms reset pulse width
Reset Output Signal for Watchog and Power Abnormal,
Manual Reset
Reset Push-Pull output (PI4S809)
Voltage monitor for power-fail or low battery warning
Guaranteed RESET/RESET valid at VCC = 1.2V
Packaging: 3-pin SOT-23
Description
The PI4Sxxx family microprocessor (P) supervisory circuits
are targeted to improve reliability and accuracy of power-supply
circuitry in P systems. These devices reduce the complexity and
number of components required to monitor power-supply and
battery functions.
The main functions are:
Asserting reset output during power-p, power-down and
brownout conditions for P systems.
Detecting power failure or low-battery conditions with a 1.25V
threshold detector.
Watchdog functions.
Manual reset.
Applications
Power-supply circuitry in P systems.
P Supervisor Circuits
PI4S809/803
Block Diagram
Reset Generator
VCC
GND
200ms
RESET
VREF
Pin Configuration
1
3
2
GND
VCC
RESET
PI74S803
PI74S809
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