© 2002 Microchip Technology Inc.

DS21342B-page 1

Features

• Combines Comparator and Voltage Reference in

a Single Package

• Optimized for Single Supply Operation

• Small Package: 8-Pin MSOP

• Ultra Low Input Bias Current: Less than 100pA

• Low Quiescent Current, Active: 6

µA(Typ.),

Shutdown Mode: 0.1

µA(Typ.)

• Rail-to-Rail Inputs and Outputs

• Programmable Hysteresis

Applications

• Power Management Circuits

• Battery Operated Equipment

• Consumer Products

Device Selection Table

Package Type

General Description

The TC1031 is a low-power comparator and voltage

reference designed specifically for low-power applica-

tions. The TC1031 is designed for operation from a

single supply, however operation from dual supplies is

also possible. The power supply current drain is

independent of the magnitude of the power supply

voltage. The TC1031 can operate from two 1.5V

Typical active supply current is 6

µA. Rail-to-rail inputs

and outputs allow operation from low supply voltages

with large input and output signal swings.

The TC1031 provides a simple method for adding user-

adjustable hysteresis without feedback or complex

external circuitry. Hysteresis is adjusted with a simple

resistor divider on the HYST input. A shutdown input,

SHDN, disables the comparator and voltage reference

and reduces supply current to less than 0.1

µA

(maximum) when taken low.

The TC1031 is packaged in a space-saving 8-Pin

MSOP, making it ideal for applications requiring high

integration, small size and low power.

Functional Block Diagram

Part Number

Package

Temperature

Range

TC1031CEUA

8-Pin MSOP

-40°C to +85°C

HYST

1

2

3

4

8

7

6

5

TC1031CEUA

INA+

INA

-

OUT

8-Pin MSOP

SHDN

SHDN

IN+

IN-

HYST

OUT

Voltage

Reference

–

1

2

3

45

6

7

8

TC1031

TC1031

Linear Building Block – Low Power Voltage Reference with

Programmable Hysteresis Comparator and Shutdown