Overview
The MAX17048+ is a compact fuel gauge IC developed by Maxim Integrated (now part of Analog Devices) for lithium-ion battery packs. It employs a proprietary algorithm called ModelGauge™ to deliver accurate state-of-charge (SOC) and voltage readings without requiring battery characterization. Designed for low-power applications, it consumes minimal current, making it suitable for always-on devices. The IC communicates via I2C, enabling seamless integration with host systems. Its small form factor and minimal external component requirements simplify PCB design. The MAX17048+ is widely adopted in smartphones, tablets, wearables, and medical devices due to its reliability and precision.
Structure and Working Principle
The MAX17048+ integrates a voltage ADC, temperature sensor, and digital processing unit. It measures battery voltage and temperature to estimate SOC using an adaptive algorithm that compensates for aging and load variations. Unlike traditional coulomb counters, it does not rely on battery-specific data, reducing calibration efforts. The IC operates in two modes: active mode for real-time monitoring and sleep mode to conserve power. Its I2C interface allows configuration and data retrieval, supporting alerts for low-battery conditions. The onboard 14-bit ADC ensures high-resolution voltage measurements, critical for precision applications.
Key Features
The MAX17048+ excels in accuracy, typically achieving ±1% SOC error under most conditions. Its ModelGauge algorithm eliminates the need for battery profiling, reducing development time. The IC also supports temperature compensation to account for environmental effects on battery performance. Power efficiency is another highlight, with sleep-mode current as low as 7µA. The device includes programmable alarms for voltage thresholds, enabling proactive power management. Robust ESD protection (up to ±8kV) ensures durability in harsh environments.
Application Areas
Primary applications include consumer electronics like laptops, wireless earbuds, and handheld gaming devices, where battery runtime is critical. Industrial uses encompass IoT sensors, asset trackers, and backup power systems requiring reliable SOC data. The MAX17048+ is also favored in medical devices, such as portable monitors, due to its fail-safe operation. Automotive aftermarket solutions, like dash cams, leverage its compact design and low power draw. Its versatility makes it a go-to choice for B2B buyers in diverse sectors.
Maintenance and Precautions
To ensure longevity, avoid exposing the IC to voltages beyond its specified range (2.5V–4.5V). Proper ESD precautions during handling are essential to prevent damage. Soldering should follow JEDEC standards to avoid thermal stress. Regular firmware updates for the host system may improve algorithm performance. For long-term storage, keep the IC in anti-static packaging at room temperature. Avoid moisture exposure to prevent corrosion.
B2B Procurement Guide
When sourcing the MAX17048+, verify authenticity through authorized distributors like Digi-Key or Mouser to avoid counterfeit parts. Bulk orders (1,000+ units) typically reduce costs by 10–20%. Lead times vary; plan for 6–8 weeks during chip shortages. Evaluate alternative part numbers (e.g., MAX17048G+) for enhanced features. Request samples for prototyping. Confirm RoHS compliance if environmental regulations apply. Negotiate warranties and return policies with suppliers.
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