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BQ25619 Folha de dados(PDF) 1 Page - Texas Instruments |
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BQ25619 Folha de dados(HTML) 1 Page - Texas Instruments |
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1 / 59 page  VBUS SW SYS BAT I 2 C Bus TS Adapter Or Wireless RX QON REGN + ICHG Host Host Control Optional PMID Ear Buds SYS 3.5V-4.6V 4V ± 13.5V Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. BQ25619 SLUSDF8A – JUNE 2019 – REVISED JULY 2019 BQ25619 I2C Controlled 1-Cell 1.5-A Battery Charger with 20-mA Termination and 1-A Boost Operation 1 1 Features 1 • Single chip solution to charge wearable accessories from adapter or battery • High-efficiency, 1.5-MHz, synchronous switch- mode buck charger – 95.5% Charge efficiency at 0.5 A and 94.5% efficiency at 1 A – ±0.5% Charge voltage regulation (10-mV step) – I2C Programmable JEITA profile of charge voltage, current and temperature thresholds – Low termination current with high accuracy 20 mA±10 mA – Small inductor form factor of 2.5x2.0x1.0 mm3 • Boost mode with output from 4.6 V to 5.15 V – 94% Boost efficiency at 1-A output – Integrated control to switch between charge and boost mode – PMID_GOOD Pin control external PMOS FET for protection against fault conditions • Single input to support USB input and high- voltage adapter and wireless power – Support 4-V to 13.5-V input voltage range with 22-V abs max input rating – Programmable input current limit (IINDPM) with I2C (100-mA to 3.2-A, 100-mA/step) – Maximum power tracking by input voltage limit (VINDPM) up to 5.4 V – VINDPM Threshold automatically tracks battery voltage • Narrow VDC (NVDC) power path management – System instant-on with no battery or deeply discharged battery • Flexible I2C configuration and autonomous charging for optimal system performance • High integration includes All MOSFETs, current sensing and loop compensation • Low Rdson 19.5-mΩ BATFET to minimize charging loss and extend battery run time – BATFET Control for ship mode, and full system reset with and without adapter • 7-µA Low battery leakage current in ship mode • 9.5-µA Low battery leakage current with system standby • High accuracy battery charging profile – ±6% Charge current regulation – ±7.5% Input current regulation – Remote battery sensing to charge faster – Programmable top-off timer for full battery charging 2 Applications • Consumer wearables, smartwatch, • Personal care and fitness • Headsets/headphone • Earbuds (True Wireless or TWS) charging case • Hearing aids charging case 3 Description The BQ25619 is a highly integrated 1.5-A switch- mode battery charge management and system Power Path management device for single cell Li-Ion and Li- polymer battery. The low impedance Power Path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery run time during discharging phase. The BQ25619 can charge wearable accessories in direct path from an adapter or in boost mode from a battery, with PMID_GOOD pin to control the external PMOS FET load switch. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) BQ25619 WQFN (24) 4.00 mm × 4.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Application |
Nº de peça semelhante - BQ25619_V01 |
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Descrição semelhante - BQ25619_V01 |
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