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The RT9492 is a comprehensive solution that integrates a 5A buck-boost battery charger and system power path management device for 2 to 4 cell Li-Ion and Li-polymer batteries. Its low impedance power path optimizes switch-mode operation efficiency, which not only reduces battery charging time and extends battery life during the discharging phase. The inclusion of an I2C serial interface allows for a wide range of charging parameters and system settings to be programmed, making the RT9492 a versatile option for various applications.The recommended junction temperature range is -40°C to 130°C, and the ambient temperature range is -40°C to 85°C.

Applications

  • Smart Phones/Tablets/Chrome Books
  • Drones
  • Portable Devices and Accessories
Key Spec.
RT9492
Status Active
Vin (min) (V) 3.6
Vin (max) (V) 24
Battery Charge Voltage (max) (V) 18.8
Battery Charge Current (max) (A) 5
Status Indicator Yes
Charger Type Switching
Input Source USB
Features ACOT Control;Adjustable Current Limit;Adjustable Frequency;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Enable Input;I2C;OCP;OVP;SCP;Stable with Ceramic Capacitor;UVP
Package Type VQFN4x4-29T(FC)
Built-in Power MOSFETs Yes
Features
  • Programmable Frequencies: 750kHz/1MHz/1.5MHz
    - 96.7% Charge Efficiency at 2A with 9V Input and 8V Battery
    - Support 3.6V to 24V Input Voltage Range
    - Average Input Current Regulation (AICR)
    - Minimum Input Voltage Regulation (MIVR)
  • Support USB On-The-Go (OTG)
    - 93.4% OTG Efficiency at 2A with 8.4V Battery and 5V Output
    - Output Voltage with 10mV Resolution to Support USB-PD
    - BAT Current Limit Regulation (BCLR)
  • Support Dual Input Selection
  • Support BC1.2, Host Mode and Fast Role Swap (FRS)/Seamless Transition
  • Support 11-Channel, 16-bit ADC
  • Low Battery Quiescent Current
  • High Accuracy for Charger CV and ICHG
  • Protection
    - Over-Temperature Protection (OTP)
    - Junction Thermal Regulation (JTR)
    - Input Protection (VAC OVP/VBUS OVP/OCP)
    - Battery Overvoltage Protection (VBAT OVP)
    - System Voltage Protection (VSYS OVP/UVP)
    - System Over-Load Protection (VSYS OLP)
    - Cycle-by-Cycle Overcurrent Protection (OCP)
    - OTG Low Battery Protection (OTG LBP)
    - OTG Voltage Protection (OTG OVP/UVP)
Evaluation Board
Part NumberDistributorStockBuy From Authorized Distributor
EVB_RT9492GQVF(2) Digikey 8 Buy
Mouser 0 Lead-Time: 14 weeks
Please confirm with our distributor or sales representative for actual stock status.
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