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PDF ISL88017 Data sheet ( Hoja de datos )
| Número de pieza | ISL88017 | |
| Descripción | (ISL88016 / ISL88017) 6-Pin Voltage Supervisors | |
| Fabricantes | Intersil Corporation | |
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®
Data Sheet
ISL88016, ISL88017
December 22, 2006
FN6141.0
6-Pin Voltage Supervisors with Pin-
Selectable Voltage Trip Points
The ISL88016, ISL88017 supervisors offer pin-selectable
voltage trip points along with popular functions such as
Power-on Reset control, Supply Voltage Supervision, and
Manual Reset assertion in a small 6 Ld TSOT-23 package.
By connecting the three VSET pins to VDD, GND or floating,
users can program the voltage trip point from 1.60V to 2.85V
in 50mV increments on the ISL88016 and from 2.15V to
4.65V in 100mV increments on the ISL88017. These user-
selectable reset threshold voltages are accurate to ±2% over
temperature and the reset signal is valid down to 1V.
Intersil’s proprietary TwinPin™ combines the active low reset
out with the manual reset input into one pin. This provides
device adjustability without sacrificing functionality. These
parts are specifically designed for low power consumption
and high threshold accuracy.
Pinout
www.DataSheet4U.com
ISL88016, ISL88017
(6 LD TSOT-23)
TOP VIEW
VDD
1
6 RST/MR
GND
2 ISL88016 5
ISL88017
VSET3
VSET1
3
4 VSET2
Features
• Pin-Selectable Single Voltage Monitoring Supervisors
• User Pin-Selectable Voltage Trip Points
- ISL88016: 1.60V to 2.85V in 50mV Steps
- ISL88017: 2.15V to 4.65V in 100mV Steps
• Reduce Inventory on Fixed Voltage Trip Point Options
• Manual Reset Capability
• Proprietary TwinPin™ Combines Active-Low Reset Output
and Manual Reset Input Functions into One Pin
• Reset Signal Valid Down to VDD = 0.8V
• Voltage Threshold ±2% Accuracy Over Temp
• No External Components Necessary
• Immune to Power-Supply Transients
• Ultra Low 3µA Supply Current
• Small 6 Ld TSOT-23 Pb-Free Plus Anneal Available
(RoHS Compliant)
Applications
• Process Control Systems
• Intelligent Instruments
• Embedded Control Systems
• Computer Systems
• Portable/Battery-Powered Equipment
• PDA and Hand-Held PC Devices
Ordering Information
PART NUMBER PART TAPE & PACKAGE PKG.
(Note)
MARKING REEL (Pb-Free) DWG. #
ISL88016IHTZ-T 016Z
3k pcs 6 Ld TSOT-23 MDP0049
Tape & Reel
ISL88017IHTZ-T 017Z
3k pcs 6 Ld TSOT-23 MDP0049
Tape & Reel
ISL88016IHTZ-TK 016Z
1k pcs 6 Ld TSOT-23 MDP0049
Tape & Reel
ISL88017IHTZ-TK 017Z
1k pcs 6 Ld TSOT-23 MDP0049
Tape & Reel
ISL88016/17EVAL1Z Evaluation Platform
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.
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) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
VDD
VTH / VPOR
1V
tPOR
RST
MR
ISL88016, ISL88017
tRST
tPOR
tPOR
FIGURE 1. VOLTAGE MONITORING TIMING DIAGRAM
>tMR
Principles of Operation
The ISL88016 and ISL88017 devices provides a low cost
solution for those voltage monitoring applications needing
supply voltage supervision with power reset control, and
manual reset assertion. By integrating these common
features along with three pins of Vth programming into a
small 6 Ld TSOT-23 package and using only 1µA of supply
current, the ISL88016 and ISL88017 devices can lower
system cost, reduce board space requirements, and
increase the reliability of a system while reducing inventory
overhead costs.
Low Voltage Monitoring
During normal operation, the ISL88016 and ISL88017
monitor the voltage level of VDD. The device asserts a reset
(RST = LOW) if this voltage is less than the programmed
voltage trip point. The reset signal prevents system
operation during a power failure or brownout condition. This
reset signal remains asserted until VDD exceeds the voltage
threshold setting for the reset time delay period tPOR. (See
Figure 1).
The ISL88016 and ISL88017 allow users to customize the
Power-On Reset voltage threshold level, which is the voltage
at which the reset is deasserted. The three VSET inputs are
either tied to VDD, GND or left open to program VTH. See
the Power-On Reset Voltage Setting table on page 3 for
specific voltage configuration. Also see Figure 2 for a
schematic representation of the VSET pins being
programmed, noting the minimum necessary components
for IC operation. Do not attempt to reprogram a VTH while
the IC is biased.
RST/MR
GND
ISL88016
ISL88017
VDD
VSET3
VSET1
VSET2
FIGURE 2. SETTING VPOR USING VSET INPUTS
Power-On Reset (POR)
Applying power to the ISL88016 and ISL88017 activates a
POR circuit which asserts reset once VDD = 1 V. (i.e., RST
goes LOW). This provides several benefits:
• It prevents the system microprocessor from starting to
operate with insufficient voltage.
• It prevents the processor from operating prior to
stabilization of the oscillator.
• It ensures that the monitored device is held out of
operation until internal registers are properly loaded.
• It allows time for an FPGA to download its configuration
prior to initialization of the circuit.
The reset signal remains asserted until VDD rises above the
minimum voltage sense level for time period tPOR. This
ensures that the VDD voltage has stabilized.
Optional VDD de-coupling capacitance can be added to filter
transients if needed.
5 FN6141.0
December 22, 2006
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet ISL88017.PDF ] | |
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