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IC manufacturers Richtek

IC manufacturers (83)

Richtek RT2875AQGCP | Demoboard AN047

3A, 36V, Synchronous Step-Down Converter

Overview

TopologyBuck Converter
Input voltage4.5-36 V
Switching frequency300-2100 kHz
Output 112 V / 3 A

Description

The RT2875A/B is a high efficiency, current-mode synchronous DC-DC step-down converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates 95mΩ high-side and 70mΩ low-side MOSFETs to achieve high conversion efficiency. The current-mode control architecture supports fast transient response and simple external compensation. A cycle-by-cycle current limit function provides protection against shorted output and an external soft-start eliminates input current surge during start-up. The RT2875A/B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown.The RT2875A/B is available in the thermal enhanced TSSOP-14 (Exposed Pad) package.

Features

  • 3A Output Current
  • Internal N-MOSFETs
  • Current Mode Control
  • Adjustable Switching Frequency : 300kHz to 2.1MHz
  • Adjustable Current Limit : 1.5A to 6A
  • Synchronous to External Clock : 300kHz to 2.1MHz
  • Adjustable Output Voltage from 0.6V to 24V
  • High Efficiency Up to 95%
  • Stable with Low ESR Ceramic Output Capacitors
  • Cycle-by-Cycle Current Limit
  • Input Under-Voltage Lockout
  • Output Under-Voltage Protection
  • Thermal Shutdown
  • AEC-Q100 Grade 2 Certification
  • RoHS Compliant and Halogen Free

Typical applications

  • Digital Set Top Boxes/ Broadband Communications
  • Point of Load Regulator in Distributed Power Systems
  • Vehicle Electronics

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Mount Samples
74437321010SPEC
8 files WE-LHMI SMT Power Inductor 1 4.5 5.65 10 41 47 90 SMT
Order Code Data­sheet Simu­lation
74437321010SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Mount Samples