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Cellular Telephones
Cellular Telephones
Personal Information Appliances
Tablet PC
Power Bank
Portable Instruments
Direct Charge with Over-Voltage Protection
Direct Charge with Over-Voltage Protection
Over- Current Protection and
Watchdog
High Efficiency 5A
1.5MHz Switching Charger with Output Inductor
DFE252012F
TOKO
Charging Efficiency 90.25% at ICHG = 2A
Charging Efficiency 88.86% at ICHG = 3A
Charging Efficiency 84.2% at ICHG = 5A
Synchronous 1.5MHz/0.75MHz Fixed-Frequency PWM Controller with Up to 95%
Duty Cycle
Power Path Management by BATFET Control
Support High Voltage Input (9V/12V)
Support High Voltage Input Adapter (Pump Express 1.0/2.0/3.0)
Support IR Compensation Function from Charger Output to Cell Terminal
Optimize Input Sourcing Capability to Prevent Overload
AICR Current Limit Setting via I2C
ILIM Pin for Current Limit Setting
Average Input Current Limit Measurement
Shipping Mode for Battery Leakage Reduction
Wake Up System
Exit Shipping Mode
and Reset System by QON Pin
Automatic Charging
Average Input Current Regulation (AICR) :
0.1A to 3.25A in 50mA Steps
Charge Current Regulation Accuracy : ±7%
Charge Voltage Regulation Accuracy : ±1% (0 to 85°C)
Protection for Overall System Considerations
Thermal Regulation for Current Reduction and Over-Temperature Protection
Input Over-Voltage Protection
Input Bad Adapter Protection
Battery Over-Voltage Protection
Support ADC Conversion for
VBUS
VBAT
VSYS
REGN
TS_BAT
IBUS
IBAT
TEMP_JC
TS_BUS
VBATS
IBATS
INT Output for Communication with Host Through I2C (Watch Dog / Polling
Function)
5A Single Cell Li-Ion Switching Battery Charger with Direct Charge, Power Path ,Management and USB OTG Boost Mode
The RT9468 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for ,portable applications. It integrates a synchronous PWM controller, power ,MOSFETs, input current sensing and regulation, high-accuracy voltage ,regulation, and charge termination. The charge current is regulated through ,integrated sensing resistors. The RT9468 also features USB On-The-Go (OTG) ,support. The RT9468 integrates an easy-to-use direct charge function, simply ,driving an external MOSFET to enable a direct charge path, as well as ,over-voltage protection, over-current protection, and watchdog functions.The ,RT9468 optimizes for charging task by using a control algorithm to vary the ,charge rate for different modes, including pre-charge mode, fast charge mode ,(constant voltage and constant current). The key charge parameters are ,programmable through an I2C interface. The RT9468 will resume the charge cycle ,whenever the battery voltage falls below an internal recharge threshold, and ,can automatically enter sleep mode if the input power supply is removed.,,Other features include under-voltage protection, over- voltage protection, ,thermal regulation and reverse leakage protection.,,The RT9468 is available in a WQFN-32L 4x4 package.,,
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