en

Cart

Your cart is empty.

IC reference design search
IC manufacturers Richtek

IC manufacturers (83)

Richtek RT2856H

6A, 18V, Synchronous Step-Down Converter

Overview

TopologyBuck Converter
Input voltage4.5-18 V
Switching frequency200-1600 kHz
Output 12.5 V / 6 A
IC revisionDS2856H

Description

The RT2856H is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT2856H current-mode architecture with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during startup. Fault condition protections include output under-voltage protection, output over-voltage protection, and overtemperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.

Features

  • Low RDS(ON) Power MOSFET Switches 26mΩ/19mΩ
  • Input Voltage Range : 4.5V to 18V
  • Adjustable Switching Frequency : 200kHz to 1.6MHz
  • Current-Mode Control
  • Synchronous to External Clock : 200kHz to 1.6MHz
  • Accurate Voltage Reference 0.8V ± 1%, Over −40°C to 85°C
  • Monotonic Start-Up into Pre-biased Outputs
  • Adjustable Soft-Start
  • Power Good Indicator
  • Under-Voltage and Over-Voltage Protection
  • Input Under-Voltage Lockout
  • RoHS Compliant and Halogen Free

Typical applications

  • High Performance Point of Load Regulation,High Density and Distributed Power Systems
  • Notebook Computers

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
LR
(µH)
ISAT,10%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Samples
7443550320SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

8 files WE-HCI SMT Flat Wire High Current Inductor 3.2 19.1 2.2 6 5.3 34 WE-PERM SMT
744325330SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 3.3 16.6 2.4 5 5.9 54 Superflux SMT
7443551370SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

8 files WE-HCI SMT Flat Wire High Current Inductor 3.7 18.3 2.6 7 4.9 26 WE-PERM SMT
744325420SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 4.2 15.4 3.3 5 7.1 33 Superflux SMT
7443550480SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

8 files WE-HCI SMT Flat Wire High Current Inductor 4.8 12.9 3.55 5.5 10.5 28 WE-PERM SMT
744325550SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 5.5 12 4.3 4.5 10.3 30 Superflux SMT
Order Code Data­sheet Simu­lation
7443550320SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

744325330SPEC
7443551370SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

744325420SPEC
7443550480SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

744325550SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
LR
(µH)
ISAT,10%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Samples