CAT1024VA-25 datasheet, PDF - EEWORLD Datasheet

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CAT1024VA-25: DescriptionPower Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO8, LEAD AND HALOGEN FREE, SOIC-8; CategoryPower/power management The power supply circuit; File Size111KB，17 Pages; ManufacturerCatalyst; Websitehttp://www.catalyst-semiconductor.com/; Environmental Compliance

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CAT1024VA-25 Overview

Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO8, LEAD AND HALOGEN FREE, SOIC-8

CAT1024VA-25 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Parts packaging code	SOIC
package instruction	SOP,
Contacts	8
Reach Compliance Code	unknown
ECCN code	EAR99
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	4.9 mm
Number of channels	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	105 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	2.7 V
Nominal supply voltage (Vsup)	3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	3.9 mm
Base Number Matches	1

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Preliminary Information

CAT1024, CAT1025

Supervisory Circuits with I

C Serial 2K CMOS EEPROM and Manual Reset

FEATURES

Precision power supply voltage monitor

GEN

ALO

Built-in inadvertent write protection

— 5V, 3.3V and 3V systems

— Five threshold voltage options

Active high or low reset

— WP pin (CAT1025)

1,000,000 Program/Erase cycles

Manual reset input

100 year data retention

8-pin DIP, SOIC, TSSOP, MSOP & TDFN

— Valid reset guaranteed at V

= 1V

400kHz I

C bus

2.7V to 5.5V operation

Low power CMOS technology

16-Byte page write buffer

(3x4.9mm & 3x3mm foot print) packages

Automotive, extended automotive and

industrial temperature ranges

DESCRIPTION

The CAT1024 and CAT1025 are complete memory and

supervisory solutions for microcontroller-based systems.

A 2kbit serial EEPROM memory and a system power

supervisor with brown-out protection are integrated

together in low power CMOS technology. Memory

interface is via a 400kHz I

C bus.

The CAT1025 provides a precision V

sense circuit

and two open drain outputs: one (RESET) drives high

and the other (RESET) drives low whenever V

falls

below the reset threshold voltage. The CAT1025 also

has a Write Protect input (WP). Write operations are

disabled if WP is connected to a logic high.

The CAT1024 also provides a precision V

sense

circuit, but has only a

RESET

output and does not have

a Write Protect input.

The power supply monitor and reset circuit protect

memory and system controllers during power up/down

and against brownout conditions. Five reset threshold

voltages support 5V, 3.3V and 3V systems. If power supply

voltages are out of tolerance reset signals become active,

preventing the system microcontroller, ASIC or peripherals

from operating. Reset signals become inactive typically 200

ms after the supply voltage exceeds the reset threshold

level. With both active high and low reset signals, interface

to microcontrollers and other ICs is simple. In addition, the

RESET

pin or a separate input,

MR,

can be used as an input

for push-button manual reset capability.

The CAT1024/25 memory features a 16-byte page. In

addition, hardware data protection is provided by a V

sense circuit that prevents writes to memory whenever V

falls below the reset threshold or until V

reaches the reset

threshold during power up.

Available packages include an 8-pin DIP and a surface

mount 8-pin SO, 8-pin TSSOP, 8-pin TDFN and 8-pin MSOP

packages. The TDFN package thickness is 0.8mm maximum.

TDFN footprint options are 3x3mm or 3x4.9mm (MSOP pad

layout).

PIN CONFIGURATION

(Bottom View)

TDFN Package: 3mm x 3mm

TDFN Package: 3mm x 4.9mm

0.8mm maximum height - (RD2, ZD2) 0.8mm maximum height - (RD4, ZD4)

VCC

SCL

SDA

RESET

NC 3

VSS 4

CAT1024

8 VCC

7 NC

6 SCL

5 SDA

RESET

VSS

VCC

SCL

SDA

RESET

VSS

CAT1024

RESET

RESET 3

VSS 4

CAT1025

8 VCC

7 WP

6 SCL

5 SDA

VCC

SCL

SDA

RESET

VSS

VCC

SCL

SDA

RESET

CAT1025

RESET

Characteristics subject to change without notice

Doc No. 3008, Rev. H

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