Overview

Description

The RAA211405 is a tiny, easy-to-use, ultra-low quiescent current (IQ) buck regulators with wide input voltage range of 7V to 40V, up to 300mA output current with fixed 5V output.

The device offers comprehensive protections, including VIN UVLO, VOUT OVP, overcurrent, and over-temperature protections.

The device comes in a TSOT23-5 package.

Features

  • 7V to 40V input supply range
  • Up to 300mA output current
  • IQ = 4μA at 40V, at no load conditions, switching
  • IQ = 2.5μA at 40V at no load and no switching conditions
  • Fixed 5V VOUT
  • Minimum on-time of 75ns
  • Variable frequency operation, frequency programmed by external inductor (4.7μH to 15μH)
  • Pre-bias, monotonic, and smooth start-up
  • Protections: Overcurrent (OC) Limit, input Undervoltage Lockout (UVLO), Over-Temperature Protection (OTP), output Overvoltage Protection (OVP)
  • Accurate EN threshold
  • Package: TSOT23-5 (2.9 mm × 1.63 mm)

Comparison

Applications

Applications

  • General purpose or LDO replacement
  • Industrial power supplies
  • Embedded systems and I/O supplies
  • E-Bikes, Power tools
  • Home/Industrial Automation

Documentation

Type Title Date
Datasheet PDF 4.13 MB
1 item

Design & Development

Boards & Kits

Models

Videos & Training

Portfolio of High Performance, Low Iq Buck Regulators for LDO Replacement

The RAA21140x and RAA21180x families of bucks are simple to use and cost-effective while offering more than 15x less power loss of similar output rating LDOs (depending on operating conditions) with ultra-low 4uA Iq at zero loading conditions, making it ideal for powering always-on standby housekeeping MCUs or sensors. These bucks are ideal for general LDO replacement in applications such as industrial & home automation, eMobility solutions, energy storage, cordless power tools, and appliances.