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bq25856-q1
- aec-q100 qualified for automotive applications
- temperature grade 1: −40ºc ≤ ta≤ 150ºc
- wide input voltage operating range: 4.2v to 70v
- wide battery voltage operating range: up-to 70v with multi-chemistry support:
- 1- to 14-cell li-ion charge profile
- 1- to 16-cell lifepo4 charge profile
- up-to 70v supercapacitor charging
- synchronous buck-boost charge controller with nfet drivers
- adjustable fsw from 200khz to 600khz
- switching frequency dithering for emi noise reduction (drss)
- optional synchronization to external clock
- integrated loop compensation with soft start
- optional gate driver supply input for optimized efficiency
- bidirectional converter operation (reverse mode) supporting usb-pd extended power range (epr)
- adjustable input voltage (vac) regulation from 3.3v to 65v with 20mv/step
- adjustable input current regulation (rac_sns) from 0.4a to 20a with 50ma/step using 5mω resistor
- high accuracy
- ±0.5% charge voltage regulation
- ±3% charge/input current regulation
- ±2% input voltage regulation
- i2c controlled for optimal system performance with resistor-programmable option
- hardware adjustable input and output current limits
- integrated 16-bit adc for voltage, current, and temperature monitoring
- high safety integration
- adjustable input over- and under-voltage protection
- battery overvoltage and overcurrent protection
- charging safety timer
- thermal shutdown
- status outputs
- input power present status (pg)
- charger operation status (stat1, stat2)
- package
- 36-pin 5mm × 6mm qfn with wettable flanks
-
the bq25856-q1 is an automotive grade, wide input voltage, switched-mode buck-boost li-ion, li-polymer, or lifepo4 battery charge controller with bidirectional power flow support. the device offers high-efficiency battery charging over a wide voltage range with accurate charge current and charge voltage regulation, in addition to automatic charge preconditioning, termination, and charge status indication. the device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. in reverse mode, the device draws power from the battery and regulates the input terminal voltage with an added constant current loop for protection.
besides the i2c host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. input current, charge current and charge voltage regulation targets can be set via the ilim_hiz, ichg and fb pins, respectively.
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查看全部 1 | 类型 | 标题 | 下载最新的英语版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 数据表 | | | 2024年 5月 8日 |
设计和开发
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评估板
— bq25856 评估模块
bq25856 评估模块 (evm) 是 bq25856 ic 的完整评估系统。bq25856 ic 是一款降压/升压电池充电控制器，具有 4.2v 至 70v 的宽输入电压范围、高达 70v 的宽输出电压范围以及双向功能，并已通过 aec-q100 认证。该器件可在宽电压范围内实现高效的直流/直流转换。该器件集成了降压/升压转换器的所有环路补偿功能，因此可提供易于使用的高密度方案。
用户指南: |
| 封装 | 引脚 | cad 符号、封装和 3d 模型 |
|---|---|---|
| 36 |
订购和质量
包含信息：
- rohs
- reach
- 器件标识
- 引脚镀层/焊球材料
- msl 等级/回流焊峰值温度
- mtbf/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
包含信息：
- 制造厂地点
- 封装厂地点
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