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reference designRTQ2131B-QA

Richtek RTQ2131B-QA

1A, 36V, 2.1MHz Synchronous Step-Down Converter

Overview

TopologyBuck Converter
Input voltage12-24 V
Switching frequency1890-2310 kHz
Output 15 V / 1 A
IC revision01

Description

The RTQ2131B is a 1A, high-efficiency, current modesynchronous step-down converter which is optimized forautomotive applications. The device operates with inputvoltages from 3V to 36V and is protected from load dumptransients up to 42V, eases input surge protection design.The device can program the output voltage between 0.8Vto VIN.

Features

  • AEC-Q100 Grade 1 Qualified
  • Wide Input Voltage Range - 4V to 36V - 3V to 36V (Soft-start is finished)
  • Tight Switching Frequency Variation 2.1MHz 10%Over Operating Ambient Temperature
  • Wide Output Voltage Range : 0.8V to VIN
  • 5V Fixed Output Voltage ( see Ordering Information for availability)
  • Maximum Output Current: 1A
  • Peak Current Mode Control
  • Integrated 200mΩ Switch and 160mmΩ Synchronous Rectifier
  • Built-In Spread-Spectrum Frequency Modulation for Low EMI
  • Power Good Indication
  • Enable Control
  • 0.8V±1.5% Reference Voltage Accuracy
  • Adjacent Pin-Short Protection
  • Built-In UVLO, UVP, OTP

Typical applications

  • Car Camera Module and Car Cockpit Systems / Connected Car Systems / Automotive Systems
  • Point of Load Regulator in Distributed Power Systems
  • Digital Set Top Boxes / Broadband Communications

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
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74437336047
SPECWE-LHMI SMT Power Inductor, 4.7 µH, 4.35 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance4.7 µH
Performance Rated Current4.35 A
Saturation Current @ 10%3.85 A
Saturation Current @ 30%7.6 A
DC Resistance53 mΩ
Self Resonant Frequency25 MHz
MountSMT 
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