BQ25910 I2C Controlled 6A Three-Level Switch Mode Single-Cell Charger | TI.com

BQ25910 (ACTIVE) I2C Controlled 6A Three-Level Switch Mode Single-Cell Charger

 

Description

The bq25910 is an integrated three-level switch-mode parallel battery charge management device for single cell Li-ion and Li-polymer batteries. Utilization of the three-level converter maintains highest switch-mode operation efficiency while reducing solution footprint and increasing power density. The device supports fast charging with high input voltage for a wide range of portable devices. The solution integrates reverse-blocking FET (QBLK), and four switching FETs (QHSA, QHSB, QLSB, QLSA). The I2C serial interface with charging and system settings makes the device a truly flexible solution.

Features

  • Parallel Charger Operation Provides Fast Charging in Dual Charger Configuration
  • High Efficiency 750-kHz Switch Mode Three-Level Buck Parallel Charger
    • Reduced Ripple to Support Low Profile Inductor
    • 95.4% Charge Efficiency at 1.5 A from 5-V Input
    • 93.3% Charge Efficiency at 3 A from 9-V Input
    • Superior Efficiency Compared to Traditional Buck Converter in Compact Form Factor
  • Single Input to Support USB Input and Adjustable High Voltage Adapters
    • Support 3.9-V to 14-V Input Voltage Range with 20-V Absolute Maximum Input Voltage Rating
    • Input Current Limit (500 mA to 3.6 A with 100-mA resolution) to Support USB2.0 and USB 3.0 Standard and High Voltage Adaptors
    • Maximum Power Tracking by Input Voltage Limit (VINDPM) up to 14 V
  • Flexible I2C Mode for Optimal System Performance
  • High Integration Includes all MOSFETs, Current Sensing and Loop Compensation
    • Lossless Charge Current Sensing without Sense Resistor
  • < 10-µA Low Battery Leakage Current During Stand-By Mode
  • High Accuracy
    • ±0.4% Charge Voltage Regulation
    • ±10% Charge Current Regulation
    • ±7.5% Input Current Regulation
    • Remote Differential Battery Sensing
  • Safety
    • Thermal Regulation and Thermal Shutdown
    • Input UVLO and Overvoltage Protection
    • Battery OVP
    • Input Dynamic Power Management (DPM)
    • Charging Safety Timer
    • Flying Capacitor Short Circuit Protection
    • Output Voltage Short Circuit Protection
  • Available in 36-Ball WCSP Package

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WEBENCH® Designer BQ25910

Battery Specifications:
Chemistry Lithium Ion/Lithium Polymer
  Series Parallel
Cell Count
Cell Capacity  mAh  
Total Capacity mAh  
Charger Specifications:
  Min   Max Range
Vin –  V 3.90 to 14.00V
Iin  A ≤ 3.60A
Vchg  V 3.60 to 4.775V
Ichg  A ≤ 6.00A
Ambient Temp  °C -40 to 85°C

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Parametrics

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Part number Order Number of series cells Function Cell chemistry Charge current (Max) (A) Operating Vin (Min) (V) Operating Vin (Max) (V) Absolute Vin (safety rating) (Max) ((V)) Battery charge voltage (Min) (V) Battery charge voltage (Max) (V) Features Control interface Control topology Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
BQ25910 Order now 1     Charger     Li-Ion/Li-Polymer
Lithium Phosphate/LiFePO4    		 6     3.9     14     20     3.5     4.775     IINDPM
Integrated FET
OVP
Thermal Regulation
UVLO
VINDPM    		 I2C     Switch-Mode Buck     Catalog     -40 to 85     DSBGA | 36     See datasheet (DSBGA)