STMicroelectronics Li-Ion linear battery charger with LDO

STBC02 is a highly integrated power management, embedding a linear battery charger, a 150 mA LDO, 2 SPDT load switches, a smart reset/watchdog block and a protection circuit module to prevent the battery from being damaged under fault conditions.The STBC02 uses a CC/CV algorithm to charge the battery; the fast charge and the pre-charge current can be both independently programmed using dedicated resistors. The termination current is set by default, being 5% of the programmed fast charge current, but it can also be fixed to different values.

Key features

• Fast charge current up to 450 mA
• Pre-charge current from 1 mA to 450 mA
• Adjustable floating voltage up to 4.45 V
• Embedded protection circuit module (PCM)

Additional features

• Charges single-cell Li-Ion batteries with CC/CV algorithm and charge termination
• Fast charge current up to 450 mA
• Pre-charge current from 1 mA to 450 mA
• Adjustable floating voltage up to 4.45 V
• Integrated low quiescent LDO regulator
• Automatic power path management
• Auto-recharge function
• Embedded protection circuit module (PCM) featuring battery overcharge, battery over-discharge and battery overcurrent protections
• Charging timeout to terminate the charging process for safety reasons
• Shipping mode feature allows battery low leakage when over-discharged
• Very low battery leakage in over-discharge and shutdown mode
• Charge/fault status output
• Battery voltage pin to allow external gauging
• Two 3 Ω SPDT load switches
• Reset generator triggered by USB detection
• SWIRE allows the STBC02 functions to be controlled
• Available in Flip Chip 30, 400 um pitch package
• Rugged ±4 kV HBM, ESD protection on the most critical pins

Applications

• Smart watches and wearable devices
• Fitness and medical accessories
• Li-Ion and other Li-Poly battery rechargeable equipment

Available tools

STEVAL-ISB041V1:

Li-Ion/Li-Po battery power management evaluation board based on STBC02

The STEVAL-ISB041V1 product evaluation board is based on STBC02 battery power management, integrating a linear charger for single-cell Li-Ion batteries with battery protection functions, an LDO regulator, two SPDT load switches and intelligent reset logic. The device uses a CC / CV algorithm to charge the battery; the fast-charge and pre-charge current can be programmed using an external resistor.

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