BQ25895MRTWR by Texas Instruments | APACBattery Management | Avnet ASIA
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BQ25895MRTWR

Texas Instruments

Battery Charger Li-Ion/Li-Pol 5000mA 4.5V to 5.5V 24-Pin WQFN EP T/R

制造商料号#: BQ25895MRTWR

替代型号#: BQ25895MRTWR


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描述

文档

替代/替换

信息

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.

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. It features fast charging with high input voltage support for a wide range of smartphone, tablet and portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. It also integrates Input Current Optimizer (ICO) and Resistance Compensation (IRCOMP) to deliver maximum charging power to battery. The solution is highly integrated with input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. It also integrates the bootstrap diode for the high-side gate drive and battery monitor for simplified system design. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports a wide range of input sources, including standard USB host port, USB charging port, and USB compliant adjustable high voltage adapter. To support fast charging using adjustable high voltage adapter, the bq25895M provides support MaxChargeTM handshake using D+/D– pins and DSEL pin for USB switch control. In addition, the device includes interface to support adjustable high voltage adapter using input current pulse protocol. To set the default input current limit, device uses the built-in USB interface. The device is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation. In addition, the Input Current Optimizer (ICO) supports the detection of maximum power point detection of the input source without overload. The device supports battery boost operation by supplying adjustable 4.5V-5.5V on PMID pin with up to 3.1A with integrated charge and boost mode detection.

技术参数

  • 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
  • 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

技术特性

描述
寻找类似物料
Operating Temperature
-40 to 85 °C
Mounting
Surface Mount
Output Current
5000 mA
MSL Level
2
Product Dimensions
4 x 4 x 0.75(Max)
Output Voltage
4.5 to 5.5 V
Operating Supply Voltage
3.9 to 14 V
Screening Level
Industrial
Lead Finish
Gold Over Nickel Palladium
Pin Count
24
Supplier Package
WQFN EP
Max Processing Temp
260

ECCN / UNSPSC

描述
ECCN:
EAR99
计划交货期 B:
8542390000"
UNSPSC:
32101600
UNSPSC VERSION:
V15.1101
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