MCP120-270FI MICROCHIP [Microchip Technology], MCP120-270FI Datasheet

MCP120-270FI

Manufacturer Part Number

MCP120-270FI

Description

Microcontroller Supervisory Circuit with Open Drain Output

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.MCP120-270FI.pdf (16 pages)

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FEATURES

• Holds microcontroller in reset until supply voltage

• Resets microcontroller during power loss

• Precision monitoring of 3V, 3.3V and 5V systems

• 7 voltage trip points available

• Active low RESET pin

• Open drain output

• Internal pull-up resistor (5 k ) for MCP130

• Holds RESET for 350 ms (typical)

• RESET to V

• Accuracy of ±125 mV for 5V systems and ±75 mV

• 45 A typical operating current

• Temperature range:

DESCRIPTION

The Microchip Technology Inc. MCP120/130 is a volt-

age supervisory device designed to keep a microcon-

troller in reset until the system voltage has reached the

proper level and stabilized. It also operates as protec-

tion from brown-out conditions when the supply voltage

drops below a safe operating level. Both devices are

available with a choice of seven different trip voltages

and both have open drain outputs. The MCP130 has an

internal 5 k

low RESET pins. The MCP120/130 will assert the

RESET signal whenever the voltage on the V

below the trip-point voltage.

reaches stable operating level

for 3V systems over temperature

- Industrial (I): -40 C to +85 C

2001 Microchip Technology Inc.

Microcontroller Supervisory Circuit with Open Drain Output

pullup resistor. Both devices have active

= 1.0V

pin is

PACKAGES

BLOCK DIAGRAM

MCP120/130

Reference

Bandgap

RST

Comparator

RST

‘D’ Bondout

‘G’ Bondout

TO-92 with

SOT-23-3

MCP120

MCP130

MCP120

MCP130

RST

Circuit

Delay

RST

‘F’ BONDOUT

TO-92 WITH

150mil SOIC

‘H’ Bondout

TO-92 with

MCP130

MCP120

MCP130

MCP120

MCP130

RST

Output

Driver

DS11184D-page 1

RESET

5k internal

pull-up on

MCP130

only

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