MCP6549T-E/STVAO

Quad open-drain comparator, 600nA Iq, 1.6-5.5V, AEC-Q100, 14-TSSOP, -40 to 125C

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Manufacturer Part：

MCP6549T-E/STVAO

Package：

14-Pin TSSOP (5.0x4.4x1.0mm)

Description

Product Overview

The Microchip MCP6549T-E/STVAO is a quad open-drain output nano-power comparator. 600nA typical supply current, 1.6V to 5.5V operation, 7mV max offset, AEC-Q100 Grade 1 in a 14-pin TSSOP.

Key Specifications

Channels	4 (Quad)
Supply Voltage	1.6V to 5.5V
Quiescent Current	600 nA typ, 1 uA max
Input Offset Voltage	7 mV max
Input Bias Current	1 pA max
Propagation Delay	4 us typ
Output Type	Open-Drain (pull-up to 9V max)
CMRR	70 dB typ
PSRR	80 dB typ
Hysteresis	6.5 mV typ
Operating Temperature	-40 to +125C
Package	14-Pin TSSOP (5.0×4.4mm)

Features

Ultra-low 600nA supply current per comparator
Rail-to-rail input
Open-drain output with 9V level shift capability
1.6V minimum operating voltage
AEC-Q100 Grade 1 automotive qualified
Internal 6.5mV hysteresis prevents chatter

Applications

Battery-powered voltage monitoring
Window comparator for over/undervoltage
Automotive battery supervision
Portable instrument threshold detection

Product Introduction:MCP6549T-E/STVAO Product Introduction

The MCP6549T-E/STVAO from Microchip is a quad open-drain output nano-power comparator in a 14-pin TSSOP package. With 600nA typical supply current per comparator and 1.6V minimum supply, it is ideal for always-on battery monitoring in portable and automotive applications. The open-drain outputs can be pulled up to 9V for level shifting between logic domains. AEC-Q100 Grade 1 qualification ensures automotive reliability. Internal 6.5mV hysteresis prevents output chatter near the threshold.

Working Principle:MCP6549T-E/STVAO Working Principle

The MCP6549 uses a CMOS comparator core with nanowatt bias circuitry. Each comparator continuously compares the non-inverting input against the inverting input. When VIN+ exceeds VIN- plus hysteresis, the open-drain NMOS output turns off (high impedance). When VIN+ falls below VIN- minus hysteresis, the output turns on, pulling to ground. The 6.5mV internal hysteresis creates a clean switching threshold. The open-drain output allows wired-OR connection and level shifting up to 9V via external pull-up resistor.

Pin Description:MCP6549T-E/STVAO Pin Definition and Functions

Pin	Name	Type	Description
1	IN1+	Input	Comparator 1 non-inverting
2	IN1-	Input	Comparator 1 inverting
3	VDD	Power	Supply (1.6-5.5V)
4	IN2-	Input	Comparator 2 inverting
5	IN2+	Input	Comparator 2 non-inverting
6	OUT2	Output	Comparator 2 open-drain output
7	OUT1	Output	Comparator 1 open-drain output
8	IN3+	Input	Comparator 3 non-inverting
9	IN3-	Input	Comparator 3 inverting
10	GND	Power	Ground
11	IN4-	Input	Comparator 4 inverting
12	IN4+	Input	Comparator 4 non-inverting
13	OUT4	Output	Comparator 4 open-drain output
14	OUT3	Output	Comparator 3 open-drain output