asm1817-5t Alliance Memory, Inc, asm1817-5t Datasheet

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asm1817-5t

Manufacturer Part Number
asm1817-5t
Description
Power, 3.3v/3.0v Reset, Active High, Push-pull Output
Manufacturer
Alliance Memory, Inc
Datasheet
February 2005
rev 1.5
General Description
The ASM1817 voltage supervisory device with low-power, 3.3V/
3.0V µP Reset, active HIGH, Push-Pull output. Maximum
supply current over temperature is a low 15µA (at 3.6V).
The ASM1817 generates an active HIGH reset signal whenever
the monitored supply is out of tolerance. A precision reference
and comparator circuit monitor power supply (V
Tolerance level options are 5%, 10% and 20% percent. When
an out-of-tolerance condition is detected, an internal power-fail
signal is generated which forces an active HIGH reset signal.
After V
remains active for 150ms to allow the power supply and system
microprocessor to stabilize.
The ASM1817 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/
11/12/15/16, ASM1233D and ASM1233M.
Key Features
Low Supply Current
•20 µA maximum (5.5 V)
•15 µA maximum (3.6 V)
Automatically restarts a microprocessor after power failure
150ms reset delay after V
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
CC
returns to an in-tolerance condition, the reset signal
2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com
Low Power, 3.3V/3.0V µP Reset, Active HIGH, Push-Pull Output
CC
Notice: The information in this document is subject to change without notice
returns to an in-tolerance con-
CC
)
level.
Alliance Semiconductor
Applications
Typical Operating Circuit
Block Diagram
V
V
Set-top boxes
Cellular phones
PDAs
Energy management systems
Embedded control systems
Printers
Single board computers
Reference
Reference
Tolerance
Tolerance
CC
CC
Supply
Supply
Bias
Bias
ASM1817
V
GND
CC
RESET
+
+
-
-
Typical
ASM1817
150ms
Delay
Microprocessor
RESET
GND
ASM1817
RESET

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asm1817-5t Summary of contents

Page 1

... CC remains active for 150ms to allow the power supply and system microprocessor to stabilize. The ASM1817 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. ...

Page 2

... GND Pin Description TO-92 SOT-23 Pin # Pin # Notice: The information in this document is subject to change without notice Pin Name RESET V CC GND Low Power, 3.3V/3.0V µP Reset ASM1817 TO-92 ASM1817 Description Active HIGH reset output Power supply input Ground ...

Page 3

... February 2005 rev 1.5 Application Information Operation - Power Monitor The ASM1817 detects out-of-tolerance power supply conditions. It resets a processor during power-up, power- down and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance V ...

Page 4

... Output Voltage I Output Current I Output Current I Operating Current I Operating Current V Trip Point (ASM1817R- CCTP V Trip Point (ASM1817R-10 CCTP V Trip Point (ASM1817R-20 CCTP C Output Capacitance V Detect to RESET Low t CC RPD V Slew Rate CC (V (MAX (MIN) CCTP CCTP V Slew Rate ...

Page 5

... Notice: The information in this document is subject to change without notice RESET Time Output Stage (ms) 150 Push-Pull 150 Open-Drain 150 Push-Pull 150 Push-Pull 150 Open-Drain 150 Push-Pull 350 Open-Drain 350 Open-Drain Low Power, 3.3V/3.0V µP Reset ASM1817 RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW ...

Page 6

... BSC e1 0.075 BSC H 0.083 0.104 L 0.016 0.024 Notice: The information in this document is subject to change without notice Plastic SOT-23 (3-Pin Millimeters Min Max 0.75 1.17 0.05 0.15 0.30 0.50 0.08 0.20 2.80 3.04 1.20 1.40 0.95 BSC 1.9 BSC 2.10 2.64 0.40 0. Low Power, 3.3V/3.0V µP Reset ASM1817 ...

Page 7

... Notice: The information in this document is subject to change without notice To-92 (3-Pin) Dimensions in Millimeters Min Max 4.445 4.699 0.406 0.508 0.356 0.406 4.445 4.699 3.505 3.658 2.489 2.591 1.143 1.397 4.269 4.420 12.7 14.86 2.413 2.515 Low Power, 3.3V/3.0V µP Reset ASM1817 ...

Page 8

... Low Power, 3.3V/3.0V µP Reset ASM1817 SOT-23 RESET Package Package Polarity Marking HIGH RPLL HIGH RQLL HIGH RRLL HIGH KPLL HIGH KQLL HIGH KRLL TO-92 RESET Package Package Polarity Marking HIGH ASM1817-5 HIGH ASM1817-10 HIGH ASM1817-20 HIGH ASM1817-5F HIGH ASM1817-10F HIGH ASM1817-20F ...

Page 9

... Alliance products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use. ASM1817 Copyright © Alliance Semiconductor All Rights Reserved Part Number: ASM1817 Document Version: 1.5 ...

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