ISL88708IB831Z

Manufacturer Part NumberISL88708IB831Z
DescriptionIC SUPERVISOR 3.09V 8-SOIC
ManufacturerIntersil
TypeSimple Reset/Power-On Reset
ISL88708IB831Z datasheet
 


Specifications of ISL88708IB831Z

Number Of Voltages Monitored1OutputOpen Drain, Push-Pull
ResetActive High/Active LowReset Timeout140 ms Minimum
Voltage - Threshold3.09VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case8-SOIC (3.9mm Width)
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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Data Sheet
µP Supervisor with Watchdog Timer,
Power-Fail Comparator, Manual Reset and
Adjustable Power-On Reset
Designed with high reset threshold accuracy and low power
consumption, the ISL88705, ISL88706, ISL88707,
ISL88708, ISL88716 and ISL88813 devices are
microprocessor supervisors that are designed to monitor
power-supply and battery functions in microprocessor
systems. They can help to lower system cost, reduce board
space requirements and increase the reliability of systems.
These devices provide essential functions such as supply
voltage supervision by asserting a reset output during
power-up and power-down as well as during brownout
conditions. An auxiliary voltage monitor is provided for
detecting power failures warning the system of low battery
conditions or presence detection. In addition, an
independent watchdog timer helps to monitor
microprocessor activity every 1.6s (typical). An active-low
manual reset is offered and reset signals remain asserted
until V
returns to proper operating levels.
DD
Users can increase the nominal 200ms power-on reset
time-out delay by adding an external capacitor to the C
pin on the ISL88707 and ISL88708.
Pinouts
ISL88705, ISL88706
(8 LD PDIP/SOIC)
TOP VIEW
MR
1
8
WDO
V
RST
2
7
DD
WDI
GND
3
6
PFI
PFO
4
5
1
ISL88705, ISL88706, ISL88707,
ISL88708, ISL88716, ISL88813
January 12, 2009
Features
• Fixed-Voltage Options Allow Precise Monitoring of +3.0V,
+3.3V, and +5.0V Power Supplies
• Additional Voltage Monitor for Power-Fail Detection or
Low-Battery Warning
- Monitors Voltages Down to 1.25V
- Adjustable Power-Fail Input Threshold
• Watchdog Timer Capability With 1.6s Time-out
• Both RST and RST Outputs Available
• 140ms Minimum Reset Pulse Width with Option to
Customize Using an External Capacitor
• Manual Reset Input on all Devices
• Reset Signal Valid Down to V
• Accurate ±1.8% Voltage Threshold
• Immune to Power-Supply Transients
• Ultra Low 10µA Maximum Supply Current at 3V
• Pb-Free (RoHS Compliant)
Applications
POR
• Portable/Battery Powered Equipment
• Notebook/Desktop Computer Systems
• Designs Using DSPs, Microcontrollers or Microprocessors
• Controllers
• Intelligent Instruments
• Communications Systems
• Industrial Equipment
ISL88716, ISL88813
(8 LD PDIP/SOIC)
TOP VIEW
MR
WDO
1
8
V
2
7
RST
DD
3
6
WDI
GND
4
5
PFI
PFO
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
|
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006, 2008, 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
FN8092.5
= 1V
DD
ISL88707, ISL88708
(8 LD PDIP/SOIC)
TOP VIEW
MR
RST
1
8
V
RST
2
7
DD
3
6
C
GND
POR
4
5
PFI
PFO

ISL88708IB831Z Summary of contents

  • Page 1

    ... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006, 2008, 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners. FN8092 ...

  • Page 2

    ... I26Z ISL88705IB846Z* 88705 I46Z ISL88813IB846Z* 88813 I46Z ISL88707IB846Z* 88707 I46Z ISL88706IB844Z* 88706 I44Z ISL88708IB844Z* 88708 I44Z ISL88706IB831Z* 88706 I31Z ISL88708IB831Z* 88708 I31Z ISL88706IB829Z* 88706 I29Z ISL88708IB829Z* 88708 I29Z ISL88706IB826Z* 88706 I26Z ISL88716IB826Z* 88716 I26Z ISL88708IB826Z* 88708 I26Z ISL88705EVAL1 Evaluation Board *Add “ ...

  • Page 3

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 Functional Block Diagrams V DD POR ± V REF MR PB WDT WDI PFI PF ± V REF GND ISL88705, ISL88706 RST POR ± V REF MR PB WDO WDT WDI ...

  • Page 4

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 Pin Descriptions ISL88705, ISL88716, ISL88707, ISL88706 ISL88813 ISL88708 NAME GND PFI PFO 6 C POR 6 ...

  • Page 5

    ... Thermal Resistance (Typical, Note 1) PDIP Package* (4-layer test board SOIC Package (4-layer test board Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp *Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. ...

  • Page 6

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 Electrical Specifications Over the recommended operating conditions unless otherwise specified. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. ...

  • Page 7

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 V TH1 POR RST RST FIGURE 1. POWER-SUPPLY MONITORING TIMING DIAGRAM (WDI TRI-STATED) Low Voltage Monitoring These devices monitor both the voltage level of V auxiliary voltage on PFI. ...

  • Page 8

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 . C POR ISL88707, ISL88708 14 NORMALIZED (pF) POR POR 12 OPEN = 200ms (pF) POR FIGURE ...

  • Page 9

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 V TH1 < t WDT WDI WDO t POR RST Typical Performance Curves 11.0 10 10.0 9.50 9.00 8.50 8. 3.3V DD 7.50 7.00 6.50 ...

  • Page 10

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 Typical Performance Curves POR = 213ms FIGURE 10. RESET AND RESET ASSERTION V DD FIGURE 12. RESET AND RESET DEASSERTION 10 (Continued) RESET RESET C = OPEN POR RESET RESET V ...

  • Page 11

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 Typical Performance Curves ISL88705EVAL1 and Applications The ISL88705EVAL1 supports all six of the ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 devices, enabling evaluation of basic functional operation and common application implementations. Figures 15 and 17 ...

  • Page 12

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 Bipolar Voltage Sensing Any of the ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 devices can be used to sense and report the presence of both a positive and negative voltage via the PFI and PFO, ...

  • Page 13

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 FIGURE 17. ISL88705EVAL1 SCHEMATIC (TOP BANK) 13 FN8092.5 January 12, 2009 ...

  • Page 14

    ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 Plastic Dual-In-Line Packages (PDIP) D SEATING PLANE MDP0031 PLASTIC DUAL-IN-LINE PACKAGE SYMBOL PDIP8 PDIP14 A 0.210 0.210 A1 0.015 0.015 A2 0.130 0.130 b 0.018 0.018 b2 0.060 0.060 c 0.010 ...

  • Page 15

    ... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. 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 ...