BQ25895M
- High efficiency 1.5-MHz switch mode buck charge
- 93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge current
- Optimize for high voltage input (9 V / 12 V)
- Low power PFM mode for light load operations
- Boost mode operation with adjustable output from 4.5 V to 5.5 V
- Selectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output
- 93% Boost efficiency at 5 V at 1 A output
- Support down-to 2.5V battery
- Support PWM only or PFM/PWM control for light load efficiency
- Integrated control to switch between charge and boost mode
- Single input to support USB input and adjustable high voltage adapters
- Support 3.9-V to 14-V input voltage range
- Input current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adapters
- Maximum power tracking by input voltage limit up-to 14V for wide range of adapters
- Auto detect USB SDP, CDP, DCP, and non-standard adapters
- Input current optimizer (ICO) to maximize input power without overloading adapters
- Resistance compensation (IRCOMP) from charger output to cell terminal
- Highest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 A
- Integrated ADC for system monitor (voltage, temperature, charge current)
- BATFET Control to support ship mode, wake up, and full system reset
- Flexible autonomous and I2C mode for optimal system performance
- High integration includes all MOSFETs, current sensing and loop compensation
- 12-µA Low battery leakage current to support ship mode
- High accuracy
- ±0.5% Charge voltage regulation
- ±5% Charge current regulation
- ±7.5% Input current regulation
- Safety
- Battery temperature sensing for charge and boost mode
- Thermal regulation and thermal shutdown
The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.
技術文件
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檢視所有 9 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25895M I2C Controlled Single Cell Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage 3.1 A Boost Operation datasheet (Rev. C) | PDF | HTML | 2022年 10月 17日 |
| Application note | Extracting Maximum Power from an Adapter with Input Current Optimization Feature (Rev. C) | 2019年 8月 2日 | ||
| Application note | Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) | 2018年 5月 1日 | ||
| Application note | Battery Charger Overload Protection in Boost Mode Operation | 2017年 7月 12日 | ||
| Application note | Port Detection for Power Banks | 2016年 4月 8日 | ||
| EVM User's guide | bq25890/892/895/895M EVM (PWR664) User's Guide (Rev. B) | PDF | HTML | 2015年 11月 24日 | |
| Application note | Using the bq2589x ADC to Estimate Battery Temperature | 2015年 5月 4日 | ||
| Analog Design Journal | Extract maximum power from the supply when charging a battery | 2014年 4月 11日 | ||
| Analog Design Journal | Dynamic power management for faster, more efficient battery charging | 2013年 10月 28日 |
設計與開發
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開發板
BQ25895MEVM-664 — bq25895M 完整充電器評估模組
The bq25895M evaluation module (EVM) is a complete charger module for evaluating the highly-integrated switch-mode battery charge management and system power path management device for 1 cell Li-Ion and Li-polymer battery in a wide range of smartphone and tablet applications.
| 封裝 | 引腳 | 下載 |
|---|---|---|
| WQFN (RTW) | 24 | 檢視選項 |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。