MCP9802A0T-M/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock

Name: MCP9802A0T-M/OT
Brand: Microchip
SKU: MCP9802A0T-M/OT
Availability: InStock

MCP9802A0T-M/OT is a Microchip digital temperature sensor with I2C/SMBus interface and up to 12-bit resolution. It features a programmable alert output and ±3°C maximum accuracy over its operating range. Supplied in a miniature SOT-23-5 package suited for space-constrained thermal monitoring applications.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

MCP9802A0T-M/OTSOT23 (5-Pin)

Quick Facts

Manufacturer: Microchip
Package: SOT23 (5-Pin)
Pin Count: 5
Lifecycle: ACTIVE
Datasheet: MCP9802A0T-M/OT Datasheet PDF
Category: Integrated Circuit
Price: From $0.3261(MOQ 1)
Temp Range: -55.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of MCP9802A0T-M/OT?

9-bit to 12-bit programmable resolution via I2C interface for accuracy versus speed trade-off
±3°C maximum accuracy across the operating temperature range for general thermal monitoring
Programmable ALERT output pin configurable as comparator or interrupt for autonomous thermal protection
I2C/SMBus compatible 2-wire interface operating at up to 400 kHz for easy MCU integration
Miniature SOT-23-5 package measuring only 2.95 × 1.63 × 1.45 mm for dense PCB layouts
Supports 3 address pins allowing up to 8 devices on a single I2C bus

What is MCP9802A0T-M/OT used for?

MCP9802A0T-M/OT is used in PCB thermal management, battery charger temperature monitoring, and portable medical devices where compact size and I2C connectivity simplify system design. Its configurable alert threshold enables autonomous fan control and overcurrent protection without continuous MCU polling.

What are the specifications of MCP9802A0T-M/OT?

Pbfree Code	Yes
Manufacturer Package Code	SOT-23-5
Factory Lead Time	7Weeks
YTEOL	9
Accuracy-Max (Cel)	3Cel
Body Breadth	1.63mm
Body Height	1.45mm
Body Length or Diameter	2.95mm
Housing	PLASTIC
JESD-609 Code	e3
Mounting Feature	SURFACE MOUNT
Number of Bits	12
Operating Current-Max	0.2mA
Output Interface Type	2-WIRE INTERFACE
Output Voltage-Min	0.4V
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	TSOP5/6,.11,37
Package Shape/Style	RECTANGULAR
Sensors/Transducers Type	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
Supply Voltage-Max	5.5V
Supply Voltage-Min	2.7V
Surface Mount	YES
Terminal Finish	Matte Tin (Sn)
Termination Type	SOLDER
Package	SOT23 (5-Pin)

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Country of Origin	Malaysia, Thailand

Where can I find the MCP9802A0T-M/OT datasheet?

MCP9802A0T-M/OT Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP9802A0T-M/OT?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

How does configuring MCP9802A0T-M/OT to 12-bit mode affect its conversion time versus 9-bit mode?

At 9-bit resolution the conversion completes in approximately 30 ms, while 12-bit mode extends conversion time to about 240 ms. Designers trade measurement speed for ±0.0625°C resolution step size when selecting between these modes.

Can multiple MCP9802A0T-M/OT sensors share a single I2C bus without address conflicts?

The device supports 3 hardware address pins (A0, A1, A2), enabling up to 8 unique 7-bit I2C addresses on one bus, ideal for multi-zone thermal monitoring systems using a single 400 kHz I2C channel.

How does the ALERT output on MCP9802A0T-M/OT enable autonomous over-temperature protection?

The ALERT pin asserts when the measured temperature exceeds the programmable upper limit register, operating as an open-drain comparator output that can directly drive a fan controller or interrupt a host processor without continuous polling.

What accuracy does MCP9802A0T-M/OT guarantee, and is that sufficient for PCB thermal runaway detection?

The device guarantees ±3°C maximum accuracy, which is adequate for detecting thermal runaway margins of 10°C to 20°C typical in power supply and battery management circuits where catastrophic failure thresholds exceed this uncertainty.

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Reference Price (USD)

From $0.3261

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Qty.	Unit Price	Ext. Price
1+	$0.8500	$0.85
100+	$0.6400	$64.00
250+	$0.3377	$84.42
500+	$0.3340	$167.00
1000+	$0.3261	$326.10

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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MCP9802A0T-M/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock

What are the key features of MCP9802A0T-M/OT?

What is MCP9802A0T-M/OT used for?

What are the specifications of MCP9802A0T-M/OT?

Compliance & Regulatory

Where can I find the MCP9802A0T-M/OT datasheet?

What are equivalent replacements for MCP9802A0T-M/OT?

Frequently Asked Questions

How does configuring MCP9802A0T-M/OT to 12-bit mode affect its conversion time versus 9-bit mode?

Can multiple MCP9802A0T-M/OT sensors share a single I2C bus without address conflicts?

How does the ALERT output on MCP9802A0T-M/OT enable autonomous over-temperature protection?

What accuracy does MCP9802A0T-M/OT guarantee, and is that sufficient for PCB thermal runaway detection?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

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About Microchip

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