AGREE

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RT6256B/RT6256C

6A, 23V Synchronous Step-Down Converter with 3.3V/5V LDO

RT6256B/RT6256C
New

The RT6256B/C is an advanced constant on-time (ACOTTM) mode synchronous buck converter. The main control loop of the RT6256B/C using an advanced constant on-time (ACOTTM) mode control which provides a very fast transient response. The RT6256B operates from 4.5V to 23V input voltage and RT6256C operates from 5.1V to 23V.

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.

RT6256B RT6256C
Status Active Active
Vin (min) (V) 4.5 5.1
Vin (max) (V) 23 23
Number of Outputs 1 1
Vout (min) (V) 3.267 5.049
Vout (max) (V) 3.333 5.151
Output Adj. Method Fixed Fixed
Iout (max) (A) 6 6
Current Limit (typ) (A) 8.4 8.4
Freq (typ) (kHz) 500 750
Ext Sync No No
Ron_HS (typ) (mOhm) 30 30
Ron_LS (typ) (mOhm) 15 15
Iq (typ) (mA) 0.1 0.1
Features ACOT Control;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;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
Package Type UQFN3x3-12H(FC) UQFN3x3-12H(FC)

Features

  • 4.5V to 23V (RT6256B) and 5.1V to 23V (RT6256C) Input Voltage Range 6A Output Current

  • ACOTTM Mode Performs Fast Transient Response

  • ACOTTM Architecture to Enable All MLCC Output Capacitor Usage

  • Fixed 750kHz (RT6256C) and 500kHz (RT6256B) Switching Frequency

  • High Efficient Internal Power MOSFET Switch- 30mΩ (High-Side) and 15mΩ (Low-Side)

  • Fixed 3.3V (RT6256B) and 5V (RT6256C) LDOs Output Supply 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)

Datasheet

DS6256BC-03.pdf

Datasheet

DS6256BC-03.pdf

RT6256BGQUF
Package Type:UQFN3x3-12H(FC)
Sample Buy
RT6256CGQUF
Package Type:UQFN3x3-12H(FC)
Sample Buy
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