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ASM8500EZR-39

Description
Power Supply Support Circuit, Fixed, 1 Channel, PBCY3, TO-92, 3 PIN
CategoryPower/power management    The power supply circuit   
File Size138KB,9 Pages
ManufacturerPulseCore Semiconductor Corporation
Download Datasheet Parametric View All

ASM8500EZR-39 Overview

Power Supply Support Circuit, Fixed, 1 Channel, PBCY3, TO-92, 3 PIN

ASM8500EZR-39 Parametric

Parameter NameAttribute value
MakerPulseCore Semiconductor Corporation
package instructionTO-92, 3 PIN
Reach Compliance Codeunknown
Other featuresRESET THRESHOLD VOLTAGE IS 3.9 V
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeO-PBCY-T3
Number of channels1
Number of functions1
Number of terminals3
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
Package shapeROUND
Package formCYLINDRICAL
Certification statusNot Qualified
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1 V
surface mountNO
Temperature levelINDUSTRIAL
Terminal formTHROUGH-HOLE
Terminal locationBOTTOM
May 2005
rev 1.7
ASM8500
Low Power 5V / 3.3V µP Reset Active LOW, Open - Drain Output
Printers
Single board computers
General Description
The ASM8500 is a voltage supervisory device with a low-power,
5V
/
3.3V µP Reset, active LOW, open-drain output. Typical
supply current over temperature is a low 6µA.
The ASM8500 generates an active LOW reset signal whenever
the monitored supply is out of tolerance. A precision reference
and comparator circuit monitor power supply (V
CC
) level. Reset
threshold tolerance level is ±1.7% at room temperature. When
an out-of-tolerance condition is detected, an internal power-fail
signal is generated which forces an active LOW reset signal.
After V
CC
returns to an in-tolerance condition, the reset signal
remains active for 1.5ms to allow the power supply and system
microprocessor to stabilize.
The ASM8500 is designed with a open-drain output stage and
operates over the extended industrial temperature range.
Devices are available in compact surface mount SOT-89 and 3-
lead TO-92 packages.
Other low power products in this family include the ASM1810/
11/12/15/16/17 and ASM1233D/M.
Typical Operating Circuit
V
CC
ASM8500
Microprocessor
RESET
RESET
GND
Block Diagram
V
CC
Key Features
Low Supply Current
• 6 µA typical (5.5 V)
Automatically restarts a microprocessor after power failure
1.5ms reset delay after V
CC
returns to an in-tolerance con-
dition
Active LOW power-up reset
Precision temperature-compensated voltage reference and
comparator
Eliminates external components
Compact surface mount SOT-89 and TO-92 packages
Operating temperature -40°C to +85°C
Supply
Tolerance
Bias
ASM8500
5.5ΚΩ
RESET
+
-
Reference
Delay
1.5ms
Typical
GND
Applications
Set-top boxes
Cellular phones
PDAs
Energy management systems
Embedded control systems
Alliance Semiconductor
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
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