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CAT1027RA-25TE13

Description
IC 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, MSOP-8, Power Management Circuit
CategoryPower/power management    The power supply circuit   
File Size191KB,20 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Download Datasheet Parametric View All

CAT1027RA-25TE13 Overview

IC 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, MSOP-8, Power Management Circuit

CAT1027RA-25TE13 Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
Parts packaging codeMSOP
package instructionTSSOP,
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 codeR-PDSO-G8
JESD-609 codee0
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals8
Maximum operating temperature105 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)240
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)2.7 V
Nominal supply voltage (Vsup)3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTIN LEAD
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3 mm
Base Number Matches1
CAT1026, CAT1027
Dual Voltage Supervisory Circuits with
I²C Serial 2k-bit CMOS EEPROM
FEATURES
Precision V
CC
Power Supply Voltage Monitor
5 V, 3.3 V and 3 V systems
Five threshold voltage options
Additional voltage monitoring
Externally adjustable down to 1.25 V
Watchdog timer (CAT1027 only)
Active High or Low Reset
Valid reset guaranteed at V
CC
= 1 V
400 kHz I
2
C Bus
2.7 V to 5.5 V Operation
Low power CMOS technology
16-Byte Page Write Buffer
Built-in inadvertent write protection
1,000,000 Program/Erase cycles
Manual Reset capability
100 year data retention
Industrial and extended temperature ranges
8-pin DIP, SOIC, TSSOP, MSOP or TDFN
(3 x 3 mm foot-print) packages
TDFN max height is 0.8 mm
For Ordering Information details, see page 19.
The CAT1027 is designed with a 1.6 second
watchdog timer circuit that resets a system to a known
state if software or a hardware glitch halts or “hangs”
the system. The CAT1027 features a watchdog timer
interrupt input, WDI.
The on-chip 2k-bit EEPROM memory features a 16-byte
page. In addition, hardware data protection is provided
by a V
CC
sense circuit that prevents writes to memory
whenever V
CC
falls below the reset threshold or until V
CC
reaches the reset threshold during power up.
Available packages include 8-pin DIP and surface
mount, 8-pin SO, 8-pin TSSOP, 8-pin TDFN and 8-pin
MSOP packages. The TDFN package thickness is
0.8 mm maximum. TDFN footprint is 3 x 3 mm.
supply monitor and reset circuit protects memory and
systems controllers during power up/down and
against brownout conditions. If power supply voltages
are out of tolerance reset signals become active
preventing the system microcontroller, ASIC, or
peripherals from operating.
The CAT1026 features two open drain reset outputs:
¯¯¯¯¯¯
one (RESET) drives high and the other (RESET)
drives low whenever V
CC
falls below the threshold.
Reset outputs become inactive typically 200ms after
the supply voltage exceeds the reset threshold value.
With both active high and low reset signals, interface
to microcontrollers and other ICs is simple. CAT1027
¯¯¯¯¯¯
¯¯¯¯¯¯
has only a RESET output. In addition, the RESET pin
can be used as an input for push-button manual reset
capability.
The CAT1026 and CAT1027 provide an auxiliary
voltage sensor input, V
SENSE
, which is used to monitor a
second system supply. The auxiliary high impedance
comparator drives the open drain output, V
LOW
,
whenever the sense voltage is below 1.25 V threshold.
DESCRIPTION
The CAT1026 and CAT1027 are complete memory
and supervisory solutions for microcontroller-based
systems. A 2k-bit serial EEPROM memory and a
system power supervisor with brown-out protection
are integrated together in low power CMOS techno–
logy. Memory interface is via a 400 kHz I
2
C bus.
The CAT1026 and CAT1027 provide a precision V
CC
sense circuit with five reset threshold voltage options
that support 5 V, 3.3 V and 3 V systems. The power
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
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