I2C Controlled Single Cell 3-A Fast Charger with High Input Voltage and USB detection - BQ25600D

BQ25600D (ACTIVE)

I2C Controlled Single Cell 3-A Fast Charger with High Input Voltage and USB detection

 

Description

The bq25600 and bq25600D device are a highly-integrated 3.0-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. 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 bq25600 and bq25600D are highly-integrated 3.0-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 smart phones, tablets and portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. Its input voltage and current regulation and battery remote sensing 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 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 high voltage adapter. The device sets default input current limit based on the built-in USB interface. To set the default input current limit, the device uses the built-in USB interface, or takes the result from detection circuit in the system, such as USB PHY device. The device is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation. The device also meets USB On-the-Go (OTG) operation power rating specification by supplying 5.15 V on VBUS with constant current limit up to 1.2-A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5 V minimum system voltage (programmable). With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This Supplement Mode prevents overloading the input source.

The device initiates and completes a charging cycle without software control. It senses the battery voltage and charges the battery in three phases: pre-conditioning, constant current and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit and the battery voltage is higher than recharge threshold. If the fully charged battery falls below the recharge threshold, the charger automatically starts another charging cycle.

The charger provides various safety features for battery charging and system operations, including battery negative temperature coefficient thermistor monitoring, charging safety timer and overvoltage and overcurrent protections. The thermal regulation reduces charge current when the junction temperature exceeds 110°C (programmable). The STAT output reports the charging status and any fault conditions. Other safety features include battery temperature sensing for charge and boost mode, thermal regulation and thermal shutdown and input UVLO and overvoltage protection. The VBUS_GD bit indicates if a good power source is present. The INT output Immediately notifies host when fault occurs.

The device also provides QON pin for BATFET enable and reset control to exit low power ship mode or full system reset function.

The device family is available in 30-ball, 2.0 mm × 2.4 mm WCSP package.

Features

  • High-Efficiency, 1.5-MHz, Synchronous Switch-Mode Buck Charger
    • 92% Charge Efficiency at 2 A from 5-V Input
    • Optimized for USB Voltage Input (5 V)
    • Selectable Low Power Pulse Frequency Modulation (PFM) Mode for Light Load Operations
  • Supports USB On-The-Go (OTG)
    • Boost Converter With Up to 1.2-A Output
    • 92% Boost Efficiency at 1-A Output
    • Accurate Constant Current (CC) Limit
    • Soft-Start Up To 500-µF Capacitive Load
    • Output Short Circuit Protection
    • Selectable Low Power PFM Mode for Light Load Operations
  • Single Input to Support USB Input and High Voltage Adapters
    • Support 3.9-V to 13.5-V Input Voltage Range With 22-V Absolute Maximum Input Voltage Rating
    • Programmable Input Current Limit (100 mA to 3.2 A With 100-mA Resolution) to Support USB 2.0, USB 3.0 Standards and High Voltage Adaptors (IINDPM)
    • Maximum Power Tracking by Input Voltage Limit Up to 5.4 V (VINDPM)
    • VINDPM Threshold Automatically Tracks Battery Voltage
    • Auto Detect USB SDP, DCP and Non-Standard Adaptors
  • 200nS Fast Turn-Off of Optional External OVPFET Standing Input Voltage Up to 40V
  • High Battery Discharge Efficiency With 19.5-mΩ Battery Discharge MOSFET
  • Narrow VDC (NVDC) Power Path Management
    • Instant-On Works with No Battery or Deeply Discharged Battery
    • Ideal Diode Operation in Battery Supplement Mode
  • 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
  • 17-µA Low Battery Leakage Current
  • High Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±6% at 1.38-A Charge Current Regulation
    • ±10% at 0.9-A Input Current Regulation
    • Remote Battery Sensing for Fast Charge
  • Create a Custom Design Using the bq25600 and bq25600D With the WEBENCH® Power Designer

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Parametrics Compare all products in Battery Charger IC

 
Number of Series Cells
Function
Cell Chemistry
Battery Charge Voltage (Min) (V)
Battery Charge Voltage (Max) (V)
Special Features
Charge Current (Max) (A)
Control Interface
Control Topology
USB Feature
Rating
Operating Temperature Range (C)
Pin/Package
Operating Vin (Min) (V)
Operating Vin (Max) (V)
Absolute Vin (safety rating) (Max) ((V))
BQ25600D BQ25600 BQ25898
1    1    1   
Charger    Charger    Charger   
Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer   
3.85    3.85    3.84   
4.62    4.62    4.6   
External OVP controller
JEITA BAT Temp Monitoring (Thermistor Pin)
OTG (On The Go Boost)
Over Voltage Protection
Power Path
Vin DPM (OK for Solar Power Source)   
External OVP controller
JEITA BAT Temp Monitoring (Thermistor Pin)
OTG (On The Go Boost)
Power Path
Vin DPM (OK for Solar Power Source)   
Integrated FET
JEITA BAT Temp Monitoring (Thermistor Pin)
OTG (On The Go Boost)
Power Path
Temp Monitoring (Thermistor Pin)
Thermal Regulation   
3    3    4   
I2C    I2C    I2C
Standalone (RC-Settable)   
Switch-Mode Buck    Switch-Mode Buck    Switch-Mode Buck   
USB D+/D-
USB OTG   
USB OTG
USB PSEL   
USB Detection
USB OTG   
Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 125   
30DSBGA    30DSBGA    42DSBGA   
3.9    3.9    3.9   
13.5    13.5    14   
22    22    22   

Featured tools and software

WEBENCH® Designer BQ25600D

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 13.50V
Iin  A ≤ 3.25A
Vchg  V 3.856 to 4.624V
Ichg  A ≤ 3.00A
Ambient Temp  °C -40 to 85°C