ISL88022 Intersil Corporation, ISL88022 Datasheet

no-image

ISL88022

Manufacturer Part Number
ISL88022
Description
(ISL88021 / ISL88022) Triple Voltage Monitor
Manufacturer
Intersil Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL88022IU8FAZ
Manufacturer:
INTERSIL
Quantity:
20 000
Part Number:
ISL88022IU8FCZ
Manufacturer:
INTERSIL
Quantity:
20 000
Part Number:
ISL88022IU8HEZ
Manufacturer:
INTERSIL
Quantity:
20 000
Part Number:
ISL88022IU8HFZ
Manufacturer:
INTERSIL
Quantity:
20 000
Triple Voltage Monitor with Adjustable
Power-On-Reset and Undervoltage/
Overvoltage Monitoring Capability
The ISL88021 and ISL88022 family of devices are
customizable triple voltage-monitoring supervisors that
assert a reset if any of the monitored voltages becomes
non-compliant. They offer popular functions such as
Power-On-Reset timing control with both RESET and
RESET outputs, Supply Voltage Supervision, both under or
overvoltage detection, and Manual Reset assertion. By
offering these features in a small 8 Ld MSOP package, the
ISL88021 and ISL88022 can lower system cost, reduce
board space requirements and increase the reliability of
systems.
Applying a voltage to V
circuit which holds RESET low for an adjustable period of
time. This allows the power supply and system oscillator to
stabilize before the processor can execute code.
Low V
low voltage conditions, resetting the system when V
below its minimum preset voltage threshold V
remains asserted until V
level and stabilizes. Two additional voltage monitoring
inputs, V2MON (preset) and V3MON (adjustable), monitor
other supplies to provide reliable system operation.
The ISL88021 V3MON input monitors for undervoltage (UV)
conditions whereas the ISL88022 V3MON input allows
monitoring for overvoltage (OV) conditions. The monitored
voltage on V3MON on either device is compared via a
resistor divider to a 600mV internal reference. Hence, any
voltage more or less positive than this reference can be
accurately monitored to meet specific system level
requirements or to fine-tune the threshold for applications
requiring higher precision.
These devices also let users increase the Power-On-Reset
time-out delay by connecting a capacitor between C
ground. This lengthens the period of an internal clock
counter thereby increasing the time between voltage
compliance and reset outputs signaling.
A manual reset input provides debounce circuitry for
minimum reset component count.
DD
detection circuitry protects the user’s system from
DD
DD
activates the Power-On-Reset
®
returns to its proper operating
1
Data Sheet
TH1
. Reset
POR
DD
1-888-INTERSIL or 1-888-468-3774
falls
and
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Triple Voltage Monitor and Reset Assertion
• Low V
• 140ms Minimum Reset Pulse Delay that is Customizable
• Both RST and RST Outputs Available
• Undervoltage/Overvoltage Monitoring Capability
• Low 20µA Consumption
• Small 8 Ld MSOP Package
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Process Control Systems
• Intelligent Instruments
• Embedded Control Systems
• Computer Systems
• Portable/Battery-Powered Equipment
• Multi-Voltage Systems
Pinout
September 18, 2006
- Adjustable Reset Threshold Voltages
- 0.6V ±6mV Over -40°C to +85°C
- Reset Signal Valid to V
Using an External Capacitor
All other trademarks mentioned are the property of their respective owners.
DD
|
Detection and Reset Assertion
Intersil (and design) is a registered trademark of Intersil Americas Inc.
V2MON
GND
V
MR
DD
Copyright Intersil Americas Inc. 2006. All Rights Reserved
ISL88021, ISL88022
ISL88021, ISL88022
1
2
3
4
(8 LD MSOP)
TOP VIEW
DD
= 1V
8
7
6
5
RST
RST
C
V3MON
POR
FN8226.1

Related parts for ISL88022

ISL88022 Summary of contents

Page 1

... Power-On-Reset timing control with both RESET and RESET outputs, Supply Voltage Supervision, both under or overvoltage detection, and Manual Reset assertion. By offering these features in a small 8 Ld MSOP package, the ISL88021 and ISL88022 can lower system cost, reduce board space requirements and increase the reliability of systems. Applying a voltage to V ...

Page 2

... Ordering Information V3MON TYPE PACKAGE NUMBER MSOP ISL88022IU8HAZ MSOP ISL88022IU8HCZ MSOP ISL88022IU8HEZ ANO MSOP ISL88022IU8HFZ ANN MSOP NOTES: 1. Standard versions are shown in bold. For non-standard versions MSOP please contact factory for availability MSOP 2. Add “-TK” suffix for Tape and Reel. ...

Page 3

... ISL88021/22IU8xEZ ISL88021/22IU8xCZ ISL88021/22IU8xAZ V = 3.09V TH2 V = 2.92V TH2 V = 2.32V TH2 V = 2.19V TH2 V = 1.69V TH2 V for V3MON on ISL88021 TH V for V3MON on ISL88022 TH ≥ 3.3V, Sinking 2.5mA < 3.3V, Sinking 1.5mA DD ≥ 3.3V, Sourcing 2.5mA < 3.3V, Sourcing 1.5mA open POR θ (°C/W) JA 145 MIN ...

Page 4

... V2MON and V3MON. The DD ISL88021 asserts reset if any one of these voltages fall below their respective voltage trip points and in the case of ISL88022 above the voltage trip point on the V3MON input. The reset signal effectively prevents the microprocessor from operating during a power failure, brownout or over voltage condition. This ...

Page 5

... Figure 3 illustrates a typical application diagram for either IC showing both reset outputs being used along with both a manual and signalled reset configuration. The V V2MON thresholds are preset whereas the V3MON is capable of UV (ISL88021 (ISL88022) monitoring of a voltage greater than or less than 0.6V, respectively. 3. ...

Page 6

... FIGURE 6. ISL88021_22EVAL1 t POR Operational Timing Diagrams V TH1 V2MON or V3MON (ISL88021 POR RST RST 6 ISL88021, ISL88022 = 390ms POR = 10pF COMPARISON t t RPD POR FIGURE 7. ISL88021 AND ISL88022 TIMING DIAGRAM TH2 > RPD POR POR <t MD September 18, 2006 REF FN8226.1 ...

Page 7

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 7 ISL88021, ISL88022 M8.118 (JEDEC MO-187AA) 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE SYMBOL ...

Related keywords