MIC2778(1999) 查看數據表（PDF） - Micrel

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MIC2778
(Rev.:1999)

Voltage Monitor with Adjustable Hysteresis

Micrel 

MIC2778

Pin Configuration

LTH GND HTH

3

2

1

4

RST

5

VDD

SOT-23-5 (M5)

Micrel

Pin Description

Pin Number

1

2

3

4

5

Pin Name

HTH

GND

LTH

RST

VDD

Pin Function

High-Voltage Theshold (Input): Analog input to a comparator. When the

level on this pin initially rises above VREF, the delay generator cycles and the

RST remains low for a minimum of 140ms.

Ground

Low-Voltage Threshold (Input): Analog input to a comparator. This is the

voltage monitor input assigned to detect a low voltage condition. When the

level on this pin falls below VREF, RST is asserted and the condition is

latched until VHTH > VREF.

Reset (Output): Active-low, open-drain output. This output is asserted and

latched when VLTH <VREF, indicating a low voltage condition. This state

remains latched until VHTH > VREF.

Power Supply (Input): Independent supply input for internal circuitry.

MIC2778

2

October 1999

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