BQ25618 Series
I2C controlled 1.5-A single cell buck battery charger with 20-mA termination and 1-A boost in WCSP
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
I2C controlled 1.5-A single cell buck battery charger with 20-mA termination and 1-A boost in WCSP
| Part | Battery Pack Voltage | Package / Case | Charge Current - Max [Max] | Voltage - Supply (Max) [Max] | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Number of Cells | Current - Charging | Interface | Mounting Type | Battery Chemistry | Programmable Features | Fault Protection | Function | Utilized IC / Part | Supplied Contents | Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25618YFFR | 4.52 V | 30-UFBGA, DSBGA | 1.5 A | 13.5 V | 30-DSBGA | 85 °C | -40 °C | 1 | Constant - Programmable | I2C | Surface Mount | Lithium Ion/Polymer | Current, Timer, Voltage | Over Current, Over Voltage | ||||
Texas Instruments BQ25618EVM | Battery Charger | BQ25618 | Board(s) | Power Management |
Key Features
• Single chip solution to charge wearable accessories from adapter or batteryHigh-efficiency, 1.5MHz, synchronous switch-mode buck charger95.5% charge efficiency at 0.5A and 94.5% efficiency at 1A±0.5% charge voltage regulation (10mV step)I2C programmable JEITA profile of charge voltage, current and temperature thresholdsLow termination current with high accuracy 20mA±10mASmall inductor form factor of 2.5 x 2.0 x 1.0mm3Boost mode with output from 4.6V to 5.15V94% boost efficiency at 1A outputIntegrated control to switch between Charge and Boost modePMID_GOOD pin control external PMOS FET for protection against fault conditionsSingle input supporting USB input, high-voltage adapter, or wireless powerSupport 4V to 13.5V input voltage range with 22V absolute max input ratingProgrammable input current limit (IINDPM) with I2C (100mA to 3.2A, 100mA/step)Maximum power tracking by input voltage limit (VINDPM) up to 5.4VVINDPM threshold automatically tracks battery voltageNarrow VDC (NVDC) power path managementSystem instant-on with no battery or deeply discharged batteryFlexible I2C configuration and autonomous charging for optimal system performanceHigh integration includes all MOSFETs, current sensing and loop compensationLow RDSON 19.5mΩ BATFET to minimize charging loss and extend battery run timeBATFET control for Ship mode, and full system reset with and without adapter7µA low battery leakage current in Ship mode9.5µA low battery leakage current with system standbyHigh accuracy battery charging profile±5% charge current regulation±7.5% input current regulationRemote battery sensing to charge fasterProgrammable top-off timer for full battery chargingSafety Related Certifications:IEC 62368-1 CB CertificationSingle chip solution to charge wearable accessories from adapter or batteryHigh-efficiency, 1.5MHz, synchronous switch-mode buck charger95.5% charge efficiency at 0.5A and 94.5% efficiency at 1A±0.5% charge voltage regulation (10mV step)I2C programmable JEITA profile of charge voltage, current and temperature thresholdsLow termination current with high accuracy 20mA±10mASmall inductor form factor of 2.5 x 2.0 x 1.0mm3Boost mode with output from 4.6V to 5.15V94% boost efficiency at 1A outputIntegrated control to switch between Charge and Boost modePMID_GOOD pin control external PMOS FET for protection against fault conditionsSingle input supporting USB input, high-voltage adapter, or wireless powerSupport 4V to 13.5V input voltage range with 22V absolute max input ratingProgrammable input current limit (IINDPM) with I2C (100mA to 3.2A, 100mA/step)Maximum power tracking by input voltage limit (VINDPM) up to 5.4VVINDPM threshold automatically tracks battery voltageNarrow VDC (NVDC) power path managementSystem instant-on with no battery or deeply discharged batteryFlexible I2C configuration and autonomous charging for optimal system performanceHigh integration includes all MOSFETs, current sensing and loop compensationLow RDSON 19.5mΩ BATFET to minimize charging loss and extend battery run timeBATFET control for Ship mode, and full system reset with and without adapter7µA low battery leakage current in Ship mode9.5µA low battery leakage current with system standbyHigh accuracy battery charging profile±5% charge current regulation±7.5% input current regulationRemote battery sensing to charge fasterProgrammable top-off timer for full battery chargingSafety Related Certifications:IEC 62368-1 CB Certification
Description
AI
The BQ25618/619 integrates charge, boost converter and voltage protection in a single device. It offers the industry’s lowest termination current for switching chargers to charge wearable devices by full battery capacity. The BQ25618/619 best-in-class low quiescent current reduces battery leakage down to 6uA in Ship mode, which conserves battery energy to double the shelf life for the device. The BQ25619 is in a 4mm × 4mm QFN package for easy layout. The BQ25618 is in a 2.0mm × 2.4mm WCSP package for space limited design.
The BQ25618/619 integrates charge, boost converter and voltage protection in a single device. It offers the industry’s lowest termination current for switching chargers to charge wearable devices by full battery capacity. The BQ25618/619 best-in-class low quiescent current reduces battery leakage down to 6uA in Ship mode, which conserves battery energy to double the shelf life for the device. The BQ25619 is in a 4mm × 4mm QFN package for easy layout. The BQ25618 is in a 2.0mm × 2.4mm WCSP package for space limited design.