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參數(shù)資料
| 型號(hào)： | ASM1812 |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Low Power 5V uP Reset Active HIGH, Push-Pull Output |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | PLASTIC, SOT-89 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大?。?/td> | 231K |
| 代理商： | ASM1812 |
Alliance Semiconductor
ASM1812
2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com
Notice: The information in this document is subject to change without notice
rev 1.4
Low Power 5V μP Reset Active HIGH, Push-Pull Output
February 2005
General Description
The ASM1812 is a voltage supervisory device with low-power,
5V μP Reset, active HIGH, Push-Pull output. Maximum supply
current over temperature is a low 20μA.
The ASM1812 issues an active HIGH reset signal whenever
the monitored supply is out of tolerance. A precision reference
and comparator circuit monitor power supply (V
CC
) level.
Tolerance level options are 5%, 10% and 15%. When an out-of-
tolerance condition is detected, an internal power-fail signal is
generated which forces an active HIGH reset signal. After V
CC
returns to an in-tolerance condition, the reset signal remains
active for 150ms to allow the power supply and system
microprocessor to stabilize.
The ASM1812 is designed with a push-pull output stage and
operates over the extended industrial temperature range.
Devices are available in TO-92 and compact surface mount
SOT-23 packages.
Other low power products in this family include the ASM1810/
11/15/16/17, ASM1233D and ASM1233M.
Key Features
Low Supply Current
20 μA maximum (5.5 V)
Automatically restarts a microprocessor after power failure
150ms reset delay after V
CC
returns to an in-tolerance con-
dition
Active HIGH power-up reset
Precision temperature-compensated voltage reference and
comparator
Eliminates external components
TO-92 and compact surface mount SOT-23 package
Push-Pull output for minimum current drain
Operating temperature -40°C to +85°C
Applications
Set-top boxes
Cellular phones
PDAs
Energy management systems
Embedded control systems
Printers
Single board computers
Typical Operating Circuit
Block Diagram
V
CC
Microprocessor
V
CC
RESET
RESET
GND
ASM1812
ASM1812
Supply
Bias
Reference
Delay
150ms
Typical
-
2
Tolerance
GND
+
1
3
RESET
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| ASM1812-5 | Low Power 5V uP Reset Active HIGH, Push-Pull Output |
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| ASM1812R-10 | Low Power 5V uP Reset Active HIGH, Push-Pull Output |
| ASM1812R-10F | Low Power 5V uP Reset Active HIGH, Push-Pull Output |
| ASM1812R-15 | Low Power 5V uP Reset Active HIGH, Push-Pull Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM1812-10 | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power 5V uP Reset Active HIGH, Push-Pull Output |
| ASM1812-10/T | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power 5V uP Reset Active HIGH, Push-Pull Output |
| ASM1812-10F | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power 5V uP Reset Active HIGH, Push-Pull Output |
| ASM1812-10F/T | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power 5V uP Reset Active HIGH, Push-Pull Output |
| ASM1812-15 | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power 5V uP Reset Active HIGH, Push-Pull Output |
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