Product Overview

The BME280 is an integrated digital humidity, pressure, and temperature sensor based on proven sensing principles. Housed in an ultra-compact 2.5 mm x 2.5 mm x 0.93 mm metal-lid LGA package, its high integration and low power consumption make it ideal for mobile devices, wearables, and IoT applications. The sensor supports IC (up to 3.4 MHz) and SPI (3/4-wire, up to 10 MHz) interfaces, operating stably with a main supply voltage of 1.71 V to 3.6 V and an interface supply of 1.2 V to 3.6 V, suitable for diverse complex scenarios.

Key Features

• Ultra-Compact Package: Measures only 2.5 mm x 2.5 mm x 0.93 mm, easy to integrate into space-constrained devices.
• Low Power Design: Sleep mode consumes as low as 0.1 µA, while humidity/temperature measurement at 1 Hz uses just 1.8 µA, extending battery life for portable devices.
• High-Precision Sensing: Humidity accuracy of ±3% RH, pressure noise as low as 0.2 Pa (equivalent to 1.7 cm altitude), and temperature resolution of 0.01°C.
• Flexible Interfaces: Supports both IC and SPI, compatible with mainstream microcontrollers and system architectures.
• Wide Operating Range: Operates from -40°C to +85°C, with humidity ranging 0-100% RH and pressure 300-1100 hPa, adapting to harsh environments.
• Adjustable Modes: Offers sleep, forced, and normal modes, configurable oversampling rates, and filters to balance performance and power.

Technical Specifications

Item	Parameters
Package	2.5 mm x 2.5 mm x 0.93 mm metal-lid LGA
Digital Interfaces	IC (up to 3.4 MHz), SPI (3/4-wire, up to 10 MHz)
Supply Voltage	Main (VDD): 1.71 V - 3.6 V; Interface (VDDIO): 1.2 V - 3.6 V
Current Consumption	Sleep mode: 0.1 µA; 1 Hz humidity+temp: 1.8 µA; 1 Hz pressure+temp: 2.8 µA; 1 Hz full measurement: 3.6 µA
Operating Temperature	-40°C to +85°C
Humidity Sensing	Range: 0-100% RH; Accuracy: ±3% RH (20-80% RH, 25°C); Response time: 1s (63% step)
Pressure Sensing	Range: 300-1100 hPa; Accuracy: ±1.0 hPa (0-65°C, 300-1100 hPa); RMS noise: 0.2 Pa (filtered)
Temperature Sensing	Range: -40°C to +85°C; Accuracy: ±0.5°C (25°C); Resolution: 0.01°C
Compatibility	Register and performance compatible with BMP280 pressure sensor

Typical Applications

• Environmental Monitoring & Smart Home: Real-time monitoring of indoor humidity, temperature, and air pressure to automatically adjust HVAC systems, optimize comfort, and prevent dry/high-temperature risks.
• Wearables & Fitness: Integrated in smartwatches or sports devices to track altitude changes and vertical velocity (rise/sink speed), aiding in activity analysis and health management.
• IoT & Indoor Navigation: Detect floor changes or elevator movement via pressure variations, enhancing indoor positioning accuracy for large buildings like malls and airports.
• Weather Forecasting & Outdoor Devices: Provides high-precision meteorological data for drones and outdoor sensors, supporting short-term weather prediction and flight control.
• Industrial & Consumer Electronics: Enables precise altitude detection in gaming devices or environment calibration in cameras, improving overall device performance.

Why Choose BME280？

• Multi-Function Integration: Combines humidity, pressure, and temperature sensing in one chip, simplifying design and reducing costs.
• Extreme Low Power: Sleep mode consumes only 0.1 µA, perfect for battery-driven devices requiring long-term operation, such as smartwatches and wireless sensors.
• High Precision & Stability: With ±3% RH humidity accuracy and 0.2 Pa pressure noise, it supports oversampling and IIR filtering for complex environments.
• Ultra-Small Form Factor: Compact package fits into space-constrained devices, meeting the needs of portable products.
• Flexible Compatibility: Supports IC and SPI, register-compatible with BMP280, facilitating system upgrades and shortening development cycles.

SUNTOP COMPANY INTRODUCTION

Founded in 2000, Suntop is one of the leading global distributors of electronic
components, dedica ted to providing comprehensive procurement and supply chain services to the global electronics manufacturing industry. Our services include distribution, spot trading, PPV cost-saving projects, and inventory management. We not only offer high-quality products but also strive to assist our clients in achieving optimal solutions with minimal time and cost.
As a trusted partner for numerous OEMs, ODMs, CEMs, and EMS companies worldwide, our professional team manages millions of component records from thousands of trading partners across dozens of countries daily through our company database. We maintain close business relationships with major factories and distributors in North America, Europe, and Asia to ensure that our clients stay ahead in a highly competitive market.