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参数资料
| 型号： | BQ25070DQCR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A BATTERY CHARGE CONTROLLER, PDSO10 |
| 封装： | 2 X 3 MM, GREEN, PLASTIC, SON-10 |
| 文件页数： | 1/21页 |
| 文件大小： | 664K |
| 代理商： | BQ25070DQCR |
IN
LDO
OUT
VBUS
GND
D+
D-
GND
ABB
bq25070
IMON
PWRPD
CHG
VDD
VCHGDET
USBDET
VUSBIN
USBor TA
BAT
ACDET
TEMP
PACK+
PACK-
CTRL
GPIO
STATUS
VGPIO
TS
R2
100kW
C2
1 F
m
C1
0.1 F
m
R1
1kW
C3
0.1 F
m
R5
1.5kW R3
1.5kW
R4
1.5kW
SLUSA66
– JULY 2011
1A, Single-Input, Single-Cell LiFePO4 Linear Battery Charger with 50mA LDO
Check for Samples: bq25070
Battery NTC Monitoring
1
FEATURES
Charging Status Indication
Single Cell LiFePO4 Charging Algorithm
Available in Small 2mm
× 3mm 10 Pin SON
30V Input Rating, With 10.5V Over-Voltage
Package
Protection (OVP)
50mA Integrated Low Dropout Linear
APPLICATIONS
Regulator (LDO)
Smart Phones
Programmable Charge Current Through Single
Input Interface (CTRL)
Mobile Phones
7% Charge Current Regulation Accuracy
Portable Media Players
Thermal Regulation and Protection
Low Power Handheld Devices
Soft-Start Feature to Reduce Inrush Current
DESCRIPTION
The bq25070 is a highly integrated LiFePO4 linear battery charger targeted at space-limited portable applications.
It operates from either a USB port or AC Adapter and charges a single-cell LiFePO4 battery with up to 1A of
charge current. The 30V input voltage range with input over-voltage protections supports low-cost unregulated
adapters.
The bq25070 has a single power output that charges the battery and powers the system. The charge current is
programmable up to 1A using the CTRL input. Additionally, a 4.9V
±10% 50mA LDO is integrated into the IC for
supplying low power external circuitry.
The LiFePO4 charging algorithm removes the constant voltage mode control usually present in Li-Ion battery
charge cycles. Instead, the battery is fastcharged to the overcharge voltage and then allowed to relax to a lower
float charge voltage threshold. The removal of the constant voltage control reduces charge time significantly.
During the charge cycle, an internal control loop monitors the IC junction temperature and reduces the charge
current if an internal temperature threshold is exceeded. The charger power stage and charge current sense
functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, and
charge status display.
APPLICATION SCHEMATIC
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright
2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BQ25070DQCT | 功能描述:电池管理 1A,Sgl cell,Linear Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| BQ25070EVM-740 | 功能描述:电源管理IC开发工具 BQ25070 Eval Mod RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| BQ25071DQCR | 功能描述:IC LINEAR BATT CHRGR SGL 10WSON 制造商:texas instruments 系列:- 包装:带卷（TR） 零件状态:有效 电池化学:磷酸铁锂 电池数:1 电流 - 充电:恒流 - 可编程 可编程特性:- 故障保护:超温，过压 充电电流 - 最大值:1A 电池组电压:3.5V 电压 -?供电（最高）:10.2V 接口:USB 工作温度:-40°C ~ 85°C（TA） 封装/外壳:10-WFDFN 裸露焊盘 供应商器件封装:10-WSON（3x2） 标准包装:3,000 |
| BQ25071DQCT | 功能描述:IC LINEAR BATT CHRGR SGL 10WSON 制造商:texas instruments 系列:- 包装:剪切带（CT） 零件状态:有效 电池化学:磷酸铁锂 电池数:1 Current Charging:恒流 - 可编程 可编程特性:- 故障保护:超温，过压 充电电流 - 最大值:1A Battery Pack Voltage:3.5V 电压 -?供电（最高）:10.2V 接口:USB 工作温度:-40°C ~ 85°C（TA） 封装/外壳:10-WFDFN 裸露焊盘 供应商器件封装:10-WSON（3x2） 标准包装:1 |
| BQ25071EVM-658 | 功能描述:BQ25071 - Power Management, Battery Charger Evaluation Board 制造商:texas instruments 系列:- 零件状态:有效 主要用途:电源管理，电池充电器 嵌入式:- 使用的 IC/零件:BQ25071 主要属性:- 辅助属性:LED 状态指示器 所含物品:板 标准包装:1 |
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