IC manufacturers Richtek

IC manufacturers (95)

Richtek RT2856H

6A, 18V, Synchronous Step-Down Converter

Overview

TopologyBuck Converter
Input voltage4.5-18 V
Switching frequency200-1600 kHz
Output 11.8 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)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples
7443550320SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 3.2 19.1 6 15 5.3 34 WE-PERM
744325330SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 3.3 16.6 5 15 5.9 54 Superflux
7443551370SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 3.7 18.3 7 16 4.9 26 WE-PERM
744325420SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 4.2 15.4 5 14 7.1 33 Superflux
7443550480SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 4.8 12.9 5.5 13 10.5 28 WE-PERM
744325550SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 5.5 12 4.5 12 10.3 30 Superflux
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples