ISL88041 Intersil Corporation, ISL88041 Datasheet

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ISL88041

Manufacturer Part Number
ISL88041
Description
Quad Voltage Monitor
Manufacturer
Intersil Corporation
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
ISL88041IBZ
Manufacturer:
INTERSIL
Quantity:
20 000
Quad Voltage Monitor
The ISL88041 is a quad voltage-monitoring supervisor
designed to monitor voltages ≥0.7V. Low voltage detection
circuitry protects the user 's system from low voltage
conditions, resetting the system when any of the monitored
power supply voltages V1MON-V4MON fall below their
respective minimum voltage thresholds. The reset signal
remains asserted until all of these voltages return to proper
operating levels and stabilize.
Each rail’s VMON point is independently adjustable by using
an external resistor divider. The VMON inputs will ignore
transients of less than 30µs on the monitored supplies, and
the RST output is guaranteed to be valid down to V
The RST output is open-drain to allow ORing of multiple
signals and interfacing to a wide range of logic levels. Also,
the MR input allows the user to assert reset when this input
is pulled low.
Pinout
GND
V
RST
MR
DD
1
2
3
4
(8 LD SOIC)
TOP VIEW
ISL88041
®
1
8
7
6
5
Data Sheet
V1MON
V2MON
V3MON
V4MON
DD
1-888-INTERSIL or 1-888-468-3774
= 1V.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Quad Voltage Monitoring
• Adjustable Voltage Inputs Monitor Voltages ≥0.7V
• Active-Low RST Output
• Manual Reset Capability
• Reset Signal Valid Down to V
• Integrated 20k
• Glitch Immunity on Voltage Monitoring Inputs
• 8 Ld SOIC Pb-Free Plus Anneal Package
Applications
• Graphics Cards
• Multi Voltage DSPs & Processors
• µP Voltage Monitoring
• Embedded Control Systems
• Intelligent Instruments
• Medical Equipment
• Network Routers
• Portable Battery-Powered Equipment
• Set-Top Boxes
• Telecommunications Systems
Ordering Information
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
ISL88041IBZ
ISL88041IBZ-T 88041IBZ
(RoHS Compliant)
NUMBER
(Note)
PART
All other trademarks mentioned are the property of their respective owners.
March 9, 2006
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
88041IBZ
MARKING
Copyright Intersil Americas Inc. 2005. 2006. All Rights Reserved
PART
Pull-Up Resistor on RST
-40 to +85 8 Ld SOIC
-40 to +85 8 Ld SOIC (Tape
RANGE
TEMP.
(°C)
DD
= 1V
(Pb-free)
and Reel)
PACKAGE
(Pb-Free)
ISL88041
FN9229.1
M8.15
M8.15
DWG. #
PKG.

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ISL88041 Summary of contents

Page 1

... Data Sheet Quad Voltage Monitor The ISL88041 is a quad voltage-monitoring supervisor designed to monitor voltages ≥0.7V. Low voltage detection circuitry protects the user 's system from low voltage conditions, resetting the system when any of the monitored power supply voltages V1MON-V4MON fall below their respective minimum voltage thresholds ...

Page 2

... Adjustable First Undervoltage Monitor Input 6 V2MON Adjustable Second Undervoltage Monitor Input 7 V3MON Adjustable Third Undervoltage Monitor Input 8 V4MON Adjustable Forth Undervoltage Monitor Input Functional Block Diagram V DD V1MON V2MON 2 ISL88041 FUNCTION DESCRIPTION POR 30µs FILTER ± V REF 30µs FILTER V ± V REF REF GND V REF ...

Page 3

... Deassert Reset Out Delay Assert Reset Out Delay MR 3 ISL88041 Thermal Information Thermal Resistance (Typical, Note 1) +0. SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DD Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150°C Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C Maximum Lead Temperature (Soldering 10s 300° -40° ...

Page 4

... ISL88041 Description and Operation The ISL88041 is a four voltage detection IC designed to monitor multiple voltages ≥0.7V. This IC is suitable for microprocessors or industrial system applications providing both reset and manual reset functions. V Lock Out DD Applying power to the ISL88041 V activates a lock out circuit DD which disables the reporting function until V ...

Page 5

... CURRENT VMON RST RST = 2V/DIV VMON = 1V/DIV FIGURE 4. VMON HIGH TO RST HIGH MR RST = 1V/DIV MR = 1V/DIV FIGURE 6. MR HIGH TO RST HIGH 5 ISL88041 0.645 0.642 0.639 0.636 0.633 VMON > VMON 0.630 _L2H 0.627 3.66 4.0 Figure 3 shows the VMON threshold shift over the bias range, demonstrating a PSRR of 105dB ...

Page 6

... V VMON1 RST VMON2 VMON3 6 0.1µF VMON4 5 4 GND FIGURE 10. ISL88041EVAL1 SCHEMATIC 6 ISL88041 (Continued) FIGURE 9. TYPICAL ISL88041 APPLICATION DIAGRAM 36.5k 15.4k 24.9k 6.98k 10k 10k 10k 10k PS1 HIGH VALUE CIRCUIT PS2 REQUIRING ACCURATE VOLTAGE PS3 MONITORING PS4 VMON 1- 4 ISL88041 MR RST FIGURE 11 ...

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 ISL88041 M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE ...

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