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Texas Instruments BQ25618 | Demoboard BQ25618EVM
I2C controlled 1.5-A single cell buck battery charger with 20-mA termination and 1-A boost in WCSP
Overview
| Topology | Battery Management System |
| Input voltage | 3.9-13.5 V |
| Output 1 | 4.52 V / 3.2 A |
Description
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 6 uA in Ship mode, which conserves battery energy to double the shelf life for the device. BQ25619 is in 4x4 QFN package for easy layout. BQ25618 is in 2.0x2.4mm2 WCSP package for space limited design.
Features
- 94% charge efficiency at 1 A from 5-V input and 92% boost efficiency at 1-A output
- Output short circuit protection and soft-start up To 500-µF capacitive load in OTG mode
- 10-µA low battery leakage current with system voltage standby 3-µA low battery leakage current in ship mode BATFET control to support ship mode, wake up and full system reset
- High accuracy 20-mA ± 10-mA termination current
Typical applications
- Earbuds (True Wireless or TWS) charging case, Hearing aids charging case
- Headsets/headphone
- Consumer wearables, smartwatch
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | Samples |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 25 V(DC), 1 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance1 nF | Capacitance±10% | Rated Voltage25 V (DC) | Size0402 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel |