STBC08PMR

Overview

The STBC08PMR is a linear Li-Ion battery charger designed for single-cell applications, operating within USB power specifications. It delivers a programmable charge current up to 800 mA with a fixed 4.2 V output voltage maintained at 1% accuracy. The device integrates thermal regulation to maximize charging rates while preventing overheating during high-power or high-ambient temperature operations. It eliminates the need for external MOSFETs, sense resistors, or blocking diodes. Key electrical features include a C/10 charge termination threshold, undervoltage lockout, and automatic recharge functionality. In shutdown mode, the supply current reduces to 25 µA, and low battery detection enables pre-charge settings.

Feature Summary

• Integrates thermal regulation to automatically limit current based on junction temperature, ensuring safe operation under high power or elevated ambient conditions without external components.
• Provides complete linear charging for single-cell Li-Ion batteries directly from USB ports, requiring no external MOSFETs, sense resistors, or blocking diodes.
• Includes dedicated status pins to indicate charge termination and input voltage presence, alongside a charge current monitor output compatible with gas gauge systems.

Applications

• Charging single-cell Li-Ion batteries via USB power sources
• Portable electronic devices requiring compact linear charging solutions
• Battery management systems utilizing integrated thermal protection

Procurement Notes

Verify the specific suffix 'PMR' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with system thermal requirements, as the device relies on internal thermal regulation rather than external heat sinking. Confirm that the 800 mA maximum current aligns with the target battery cell specifications and USB host capabilities. Validate that the DFN6 package footprint matches the PCB design constraints.

Selection Notes

Select this component for designs prioritizing minimal external component count and simplified board layout. It is suitable for applications where direct USB connection is required without additional switching regulators. Consider the thermal dissipation characteristics of the DFN6 package when designing for high-current scenarios. Verify that the 1% voltage accuracy meets the precision requirements of the connected battery cell.

Part Context

The STBC08 series belongs to STMicroelectronics' portfolio of linear battery chargers. These devices are engineered for simplicity and reliability in consumer electronics. The PMR suffix typically denotes a specific reel quantity and packaging format intended for automated surface-mount assembly processes.

Replacement Considerations

Consult official substitution guides for equivalent linear Li-Ion chargers with similar current ratings and thermal management features. Verify pin compatibility and package dimensions before replacing the component in existing designs.