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| 型號(hào)： | ADM6318LHARJ26DY-R7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5 |
| 封裝： | MO-178AA, SOT-23, 5 PIN |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 138K |
| 代理商： | ADM6318LHARJ26DY-R7 |
Supervisory Circuits with Watchdog
and Manual Reset in 5-Lead SOT-23
Preliminary Technical Data
ADM6316–ADM6322
Rev. PrB
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
2004 Analog Devices, Inc. All rights reserved.
FEATURES
26 Reset Threshold Options:
2.5V to 5V in 100mV Increments
4 Reset Timeout Options:
1ms, 20ms, 140ms and 1120ms (Min)
4 Watchdog Timeout Options:
6.3ms, 102ms, 1600ms and 25.6s (Typ)
Manual Reset Input
Reset Output Stages
Push-Pull Active-Low
Open-Drain Active-Low
Push-Pull Active-High
Low Power Consumption (3A)
Guaranteed Reset Output valid to VCC=1V
Power Supply Glitch Immunity
Specified Over Industrial Temperature Range
5-Lead SOT-23 Package
APPLICATIONS
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Portable Equipment
GENERAL DESCRIPTION
The ADM6316-ADM6322 are supervisory circuits which
monitor power supply voltage levels and code execution
integrity in microprocessor-based systems. As well as providing
power on reset signals, an on-chip watchdog timer can reset the
microprocessor if it fails to strobe within a preset timeout
period. A reset signal can also be asserted by means of an
external push-button, through a manual reset input. The seven
parts feature different combinations of watchdog input, manual
reset input and output stage configuration, as shown in table 1.
FUNCTIONAL BLOCK DIAGRAM
RESET
GENERATOR
MR
DEBOUNCE
GND
RESET
VCC
VREF
VCC
ADM6316
WATCHDOG
DETECTOR
WDI
Each part is available in a choice of 26 reset threshold options
ranging from 2.5V to 5V in 100mV increments. There are also 4
reset timeout options of 1ms, 20ms, 140ms and 1120ms (min)
and 4 watchdog timeout options of 6.3ms 102ms, 1600ms and
25.6s (typ).
The ADM6316-ADM6322 are available in 5-lead SOT-23
packages and typically consume only 3A, making them
suitable for use in low power portable applications.
Table 1. Selection Table
Output Stage
Part No.
Watchdog
Manual Reset
RESET
ADM6316
Yes
Push-Pull
-
ADM6317
Yes
-
Push-Pull
ADM6318
Yes
-
Push-Pull
ADM6319
-
Yes
Push-Pull
ADM6320
Yes
Open-Drain
-
ADM6321
Yes
-
Open-Drain
Push-Pull
ADM6322
-
Yes
Open-Drain
Push-Pull
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