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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
- Headsets/headphone
- Consumer wearables, smartwatch
- Earbuds (True Wireless or TWS) charging case, Hearing aids charging case
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012205044 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 1 nF | ±10% | 25 | 0402 | -55 °C up to +125 °C | 3.5 | 10 GΩ | X7R Class II | 1 | 0.5 | 0.5 | 0.25 | 7" Tape & Reel |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012205044 | SPEC |
| Samples |
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| 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 |
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