36V, 4-Switch Bidirectional Buck-Boost Controller with I2C Interface

RT6190 New Product

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The RT6190 is a 4-switch bidirectional Buck-Boost controller designed for USB power delivery (USB PD). It operates with wide input voltage range from 4.5V to 36V, and the output voltage can be programmable between 3V and 36V. The RT6190 implements peak current mode control mechanism to deliver up to 100W power with the programmable constant voltage (CV) and constant current (CC) output. It also has built-in charge pumps for driving external low-cost N-MOSFETs to control the power path. With an I2C compatible interface, the RT6190 supports many programmable functions including CV/CC output, switching frequency, and cable voltage drop compensation. Moreover, the RT6190 integrates fully protection such as input UVLO, over/under voltage protection, cycle-by-cycle current limit, short protection, and over-temperature protection. The RT6190 is available in a WQFN-40L 5x5 package.


  • Monitor
  • USB Power Delivery
  • Power Bank
Key Spec.
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 36
Vout (min) (V) 3
Vout (max) (V) 36
Iout (max) (A) 5
Current Limit (typ) (A) 6.5
Freq (typ) (kHz) 250
Freq (min) (kHz) 250
Freq (max) (kHz) 1000
Iq (typ) (mA) 3
Features Adjustable Current Limit;Adjustable Soft-Start;Bi-directional Operation;Constant Voltage and Constant Current Function;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;I2C;Input UVLO;OCP;OTP;OVP;Power Good;Programmable Switching Frequency;SCP;UVP
Interface I2C
Package Type WQFN5x5-40
  • Integrated Buck-Boost Controller :
    ► Wide Input Voltage Range : 4.5V to 36V
    ► Wide Output Voltage Range : 3V to 36V
    ► Peak Current Mode Control
    ► Programmable Switching Frequency (250kHz to 1MHz)
    ► Power Saving Mode Enables Higher Light Load Efficiency
  • AnyPowerTM for Constant Voltage (12.5mV/step, Typ.) and Constant Current (in 9-Bit Resolution) Output Settings
  • Bi-directional Power Delivery for Forward Operation and Reverse Operation
  • Embedded 2nd OCP Function
  • I2C Compatible Interface
  • Adjustable Soft-Start Time
  • Programmable Cable Voltage Drop Compensation
  • Built-in Bleeders for Quick VBUS Discharge
  • Power Good Indicator
  • Fully Protection with UVLO, OVP, UVP, OCP, Cycle-by-Cycle Current Limit and OTP
  • WQFN-40L 5x5 Package
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36V, 4-Switch Bidirectional Buck-Boost Controller with I2C Interface2021/09/09