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CAT1232LPZ-G

Description
1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, GREEN, MSOP-8
CategoryPower/power management    The power supply circuit   
File Size177KB,12 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Environmental Compliance
Download Datasheet Parametric View All

CAT1232LPZ-G Overview

1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, GREEN, MSOP-8

CAT1232LPZ-G Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerON Semiconductor
Parts packaging codeMSOP
package instructionTSSOP, TSSOP8,.19
Contacts8
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresRESET THRESHOLD VOLTAGE IS 5V
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 codeS-PDSO-G8
JESD-609 codee4
length3 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP8,.19
Package shapeSQUARE
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply1/5.5 V
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply current (Isup)0.05 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1 V
Nominal supply voltage (Vsup)5.5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceNickel/Palladium/Gold (Ni/Pd/Au)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width3 mm
Base Number Matches1
CAT1232LP, CAT1832
5 V and 3.3 V Supply Monitor, Watchdog Timer,
Manual Reset, with Active High & Low Resets
FEATURES
Selectable reset voltage tolerance
— CAT1232LP for 5 V supply
— CAT1832 for 3.3 V supply
Selectable watchdog period:
150 ms, 600 ms or 1.2 s
Two reset outputs
— Active high, push-pull reset output
— Active low, open-drain reset output
(CAT1232LP)
— Active low, push-pull reset output (CAT1832)
Debounced manual push-button reset
Compact SOIC and MSOP packages
For Ordering Information details, see page 11.
DESCRIPTION
The CAT1232LP and CAT1832 microprocessor
supervisors can halt and restart a “hung-up” or
“stalled” microprocessor, restart a microprocessor
after a power failure, and debounce a manual/push-
button microprocessor reset switch. The devices are
drop in replacements for the Maxim/Dallas
Semiconductor DS1232LP and DS1832 supervisors
Precision reference and comparator circuits monitor
the 5 V or 3.3 V system power supply voltage, V
CC
.
During power-up or when the power supply falls
outside selectable tolerance limits, both the RESET
¯¯¯¯¯¯
and RESET become active. After the power supply
voltage rises above the RESET threshold voltage, the
reset signals remain active for a minimum of 250ms,
allowing the power supply and system processor to
stabilize. The trip-point tolerance input, TOL, selects
the trip level tolerance to be either 5% or 10% for the
CAT1232LP 5 V supply and 10% or 20% for the
CAT1832 3.3 V supply.
Each device has a push-pull, active HIGH reset
output. The CAT1232LP also has an open drain,
active LOW reset output while the CAT1832 also has
a push-pull, active LOW reset output.
A debounced manual reset input activates the reset
outputs and holds them active for a minimum period of
250 ms after being released.
Also included is a watchdog timer to reset a
microprocessor that has stopped due to a software or
hardware failure. Three watchdog time-out periods are
¯¯
selectable: 150 ms, 600 ms and 1.2 s. If the ST input
is not strobed low before the watchdog time out period
expires, the reset signals become active for a
minimum of 250 ms.
APPLICATIONS
Microprocessor Systems
Portable Equipment
Controllers
Single Board Computers
Instrumentations
Telecommunications
FUNCTIONAL DIAGRAM
V
CC
TOL
V
CC
Reference
40kΩ
PBRST
TD
ST
Push Button Debounce
Watchdog Timebase Selection
Watchdog Transition Detector
Tolerance Selection
+
RESET
(CAT1232LP)
RESET
RESET
(CAT1832)
Reset &
Watchdog Timer
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
1
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