STBCFG01JR

Overview

The STBCFG01JR is a single-cell Li-ion battery charger IC from STMicroelectronics. It integrates a switch-mode charger, a voltage mode fuel gauge for state-of-charge estimation without external current sensing, and a 200 mA LDO linear regulator. The device supports USB OTG boost functionality to supply bus-powered devices. Key electrical parameters include a maximum charging current of 1.2 A, a switching frequency of 2 MHz or 3 MHz, and a 20 V tolerant input with overvoltage protection. It features programmable input current limitation and dynamic input current limit control via an I²C interface.

Feature Summary

• Integrates a highly accurate voltage mode fuel gauge that estimates state-of-charge using battery voltage measurements, eliminating the need for an external current-sensing resistor.
• Provides a 5 V output capability for USB On-The-Go (OTG) applications to power connected peripheral devices directly from the battery.
• Includes a low-dropout linear regulator (LDO) designed to support system boot operations even under dead battery conditions.
• Features smart input current limiting with programmable thresholds and dynamic adjustment to prevent input voltage drops below specified levels.

Applications

• Single-cell Li-ion battery charging in portable consumer electronics
• USB On-The-Go (OTG) host implementations requiring bus-powered device support
• Systems requiring battery state-of-charge monitoring without external sense resistors
• Applications needing system boot capability during deep discharge states

Procurement Notes

Verify the specific suffix 'JR' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the intended PCB layout regarding thermal requirements and component placement. Confirm availability status as distribution data may vary. Cross-reference with evaluation boards like STEVAL-ISB033V1 for design validation. Check for any end-of-life notifications or recommended new design alternatives.

Selection Notes

Select this component when designing single-cell lithium-ion battery systems that require integrated fuel gauging without external current sensing resistors. It is suitable for applications needing USB OTG boost capabilities alongside efficient switch-mode charging. Consider the 20 V input tolerance and programmable current limits for robust power management. Evaluate the integration of the LDO for boot support if operating in low-voltage environments.

Part Context

The STBCFG01JR belongs to STMicroelectronics' portfolio of power management integrated circuits focused on battery charging and fuel gauging. It is part of a family of solutions designed to simplify battery management by combining multiple functions into a single chip. This integration reduces bill of materials count and board space compared to discrete solutions. The device targets mobile and portable electronic applications requiring efficient and compact power management.

Replacement Considerations

Consult official STMicroelectronics documentation for direct pin-to-pin replacements or functional equivalents. Verify parameter compatibility including charging current, switching frequency, and package dimensions before substitution. No public substitute part numbers are confirmed in the provided source material.