CAT803JSDIT3 データシートの表示（PDF） - Catalyst Semiconductor => Onsemi

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CAT803JSDIT3

3-Pin Microprocessor Power Supply Supervisors

Catalyst Semiconductor => Onsemi 

CAT803, CAT809, CAT810

3-Pin Microprocessor Power Supply

Supervisors

Features

■ Precision monitoring of

+5.0V (-5%, -10%, -20%),

+3.3V (-5%, -10%),

+3.0V (-10%) and

+2.5V (-5%) power supplies

■ Offered in three output configurations:

- CAT803: Open-Drain Active LOW reset

- CAT809: Push-Pull Active LOW reset

- CAT810: Push-Pull Active HIGH reset

■ Direct replacements for the MAX803, MAX809

and MAX810 in applications operating over the

industrial temperature range

■ Reset valid down to VCC = 1.0V

■ 6µA power supply current

■ Power supply transient immunity

■ Industrial temperature range: -40ºC to +85ºC

■ Available in RoHS-compliant SOT-23 and SC70

packages

Applications

■ Computers

■ Servers

■ Laptops

■ Cable modems

■ Wireless communications

■ Embedded control systems

■ White goods

■ Power meters

■ Intelligent instruments

■ PDAs and handheld equipment

Pin Configuration

3-Lead SOT23

3-Lead SC70

GND 1

RESET 2

(RESET)

(CAT803)

CAT809 3 VCC

(CAT810)

DEscription

The CAT803, CAT809, and CAT810 are supervisory

circuits that monitor power supplies in digital systems. The

CAT803, CAT809, and CAT810 are direct replacements

for the MAX803, MAX809 and MAX810 in applications

operating over the industrial temperature range.

These devices generate a reset signal, which is asserted

while the power supply voltage is below a preset

threshold level and for at least 140 ms after the power

supply level has risen above that level. The underlying

floating gate technology, AE2(TM) used by Catalyst

Semiconductor, makes it possible to offer any custom

reset threshold value. Seven industry standard threshold

levels are offered to support +5.0V, +3.3V, +3.0V and

+2.5V systems.

The CAT803 has an open-drain RESET output (active

LOW). The CAT803 requires a pull-up resistor on the

reset output.

The CAT809 features a push-pull RESET output (active

LOW) and the CAT810 features a push-pull RESET

output (active HIGH).

Fast transients on the power supply are ignored and

the output is guaranteed to be in the correct state at Vcc

levels as low as 1.0V.

The CAT803, CAT809, and CAT810 are available in both

the compact 3-pin SOT-23 and SC70 packages.

For Ordering Information details, see page 11.

Threshold suffix selector

Nominal Threshold Threshold Suffix

Voltage

Designation

4.63V

L

4.38V

M

4.00V

J

3.08V

T

2.93V

S

2.63V

R

2.32V

Z

© 2007 by Catalyst Semiconductor, Inc.



Characteristics subject to change without notice

Doc. No. 3004, Rev. X

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