STMicroelectronics STBC03
The STBC03 is a highly integrated power management, embedding a linear battery charger, a 150 mA LDO, 2 SPDT load switches, and a protection circuit module (PCM) to prevent the battery from being damaged under fault conditions. The STBC03 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 to 5% of the programmed fast charge current, but has fixed values for fast charge currents lower than 20 mA.FEATURES
● Charges single-cell Li-Ion batteries with CC/CV algorithm and charge termination● Fast charge current up to 650 mA adjustable by external resistor
● Pre-charge current from 1 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
● Shipping mode feature allows battery low leakage when over-discharged
● Very low battery leakage in over-discharge and shutdown mode
● Charger enable input
● Charge/fault status output
● Battery voltage pin to allow external gauging
● Two 3 Ω SPDT load switches
● Available in Flip Chip 30, 400 µm 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
DESCRIPTION
The battery floating voltage value is programmable and can be set to a value up to 4.45 V.