AGREE

This website stores cookies on your computer. These cookies are used to collect information about how you interact with our website and allow us to remember you. We use this information in order to improve and customize your browsing experience and for analytics and metrics about our visitors both on this website and other media. To find out more about the cookies we use, see our Cookie Statement.
If you decline, your information won’t be tracked when you visit this website. A single cookie will be used in your browser to remember your preference not to be tracked. Find out more here.

RT6228A/RT6228B/RT6228C

8A, 23V Synchronous Step-Down Converter with 3.3V/5V LDO

RT6228A/RT6228B/RT6228C
New

The RT6228A/B/C is an advanced constant on-time (ACOTTM) mode synchronous buck converter. The main control loop of the RT6228A/B/C using an advanced constant on-time (ACOTTM) mode control which provides a very fast transient response. The RT6228A/B operates from 4.5V to 23V input voltage and the RT6228C operates from 5.1V to 23V. For the RT6228A, the output voltage can be programmed between 0.6V to 5.1V.

Applications

  • Industrial and Commercial Low Power Systems
  • Computer Peripherals
  • LCD Monitors and TVs
  • Green Electronics/Appliances
  • Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs

Key Spec.

RT6228A RT6228B RT6228C
Status Active Active Active
Vin (min) (V) 4.5 4.5 5.1
Vin (max) (V) 23 23 23
Number of Outputs 1 1 1
Vout (min) (V) 0.6 3.267 5.049
Vout (max) (V) 5.1 3.333 5.151
Output Adj. Method Resistor Fixed Fixed
Iout (max) (A) 8 8 8
Current Limit (typ) (A) 12 12 10.4
Freq (typ) (kHz) 500 500 750
Ext Sync No No No
Ron_HS (typ) (mOhm) 20 20 20
Ron_LS (typ) (mOhm) 10 10 10
Iq (typ) (mA) 0.1 0.1 0.1
Features ACOT Control;Adjustable Current Limit;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control ACOT Control;Adjustable Current Limit;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control ACOT Control;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control
Package Type UQFN3x3-12H(FC) UQFN3x3-12H(FC) UQFN3x3-12H(FC)

Features

  • 4.5V to 23V (RT6228A/B) and 5.1V to 23V (RT6228C) Input Voltage Range 8A Output Current

  • ACOTTM Mode Performs Fast Transient Response

  • ACOTTM Architecture to Enable All MLCC Output Capacitor Usage

  • Fixed 750kHz (RT6228C) and 500kHz (RT6228A/B) Switching Frequency

  • High Efficient Internal Power MOSFET Switch- 20mΩ (High-Side) and 10mΩ (Low-Side)

  • Adjustable Output Voltage from 0.6V to 5.1V (RT6228A)

  • Fixed 3.3V (RT6228C) LDO Output Supplies 100mA

  • Pre-biased Soft-Start

  • Cycle-by-Cycle Over-Current Protection

  • Input Under-Voltage Lockout

  • Thermal Shutdown Protection

  • Output Over-/Under-Voltage Protection

  • Ultrasonic Mode (USM)

  • 300kHz CLK for External Charge Bump

Application Notes

Datasheet

DS6228ABC-03.pdf

Datasheet

DS6228ABC-03.pdf

RT6228AGQUF
Package Type:UQFN3x3-12H(FC)
Sample Buy
RT6228CGQUF
Package Type:UQFN3x3-12H(FC)
Sample Buy
Contact us for more information