TC1031_05 Datasheet, PDF (1/14 Pages) Microchip Technology – Linear Building Block - Low Power Voltage Reference with Programmable Hysteresis Comparator and Shutdown

Obsolete Device
TC1031
Linear Building Block – Low Power Voltage Reference with
Programmable Hysteresis Comparator and Shutdown
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: 6μA (Typ.),
Shutdown Mode: 0.1μA (Typ.)
• Rail-to-Rail Inputs and Outputs
• Operates Down to V_DD = 1.8V
• Programmable Hysteresis
Applications
• Power Management Circuits
• Battery Operated Equipment
• Consumer Products
Device Selection Table
Part Number
TC1031CEUA
Package
8-Pin MSOP
Temperature
Range
-40°C to +85°C
Package Type
8-Pin MSOP
V_SS 1
SHDN 2
INA+ 3
INA- 4
8 OUT
7 V_DD
TC1031CEUA ₆ V_REF
5 HYST
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
alkaline cells, and operation is ensured to V_DD = 1.8V.
Typical active supply current is 6μA. 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 0.1μA
(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
1
V_SS
TC1031
8 _OUT
SHDN ²
IN+ ³
IN- ⁴
–
Voltage
Reference
7 _VDD
6
V_REF
5
HYST
© 2005 Microchip Technology Inc.
DS21342C-page 1