Toshiba Launches High Ripple-Rejection Ratio Low-Noise LDO Regulators With Enhanced Power-Line Stabilization

Category: Technology
Posted Oct 30, 2020 16:04 (GMT +7)

TOKYO--(BUSINESS WIRE)--Oct. 30, 2020

Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched the “TCR3RM Series” of 32 LDO regulators that bring enhanced power stabilization to DC power lines for mobile devices such as smartphones and wearable devices. Shipments of the first products in the series start today, and others will follow in turn.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20201029005516/en/

Toshiba: TCR3RM Series of 32 LDO regulators that bring enhanced power stabilization to DC power lines for mobile devices (Photo: Business Wire)

Toshiba: TCR3RM Series of 32 LDO regulators that bring enhanced power stabilization to DC power lines for mobile devices (Photo: Business Wire)

The new TCR3RM series combines a bandgap circuit with a low-pass filter that allows through only extremely low frequencies, and a low-noise, high-speed operational amplifier, to realize an industry-leading[1] high ripple rejection ratio[2] and low output noise voltage.

The 32 products in the lineup have a maximum output current of 300mA and output voltages ranging from 0.9V to 4.5V. Customers can select output voltage by application.

The package is a compact DFN4C package, only 1mm x 1mm, suitable for camera applications, audio applications, and for the RF circuits of power supply lines in mobile devices requiring high-density mounting, such as smartphones and wearable devices.

In typical LDO regulators, when the frequency of noise on input voltage is over 1kHz, the ripple rejection ratio drops approximately 20dB for every 10 times increase in frequency. For noise over 100kHz, it drops approximately 40dB for every 10 times increase. As a result, the LDO regulator may not be sufficiently able to remove noise of over 100kHz generated by DC-DC converter circuits or similar circuits.

The new products offer an ample ripple rejection ratio and output noise voltage characteristics, even at noise frequencies of 100kHz or higher. This contributes to stabilization of power supply lines, including high output voltage accuracy.


Mobile devices

  • Smartphones
  • Wearable devices
  • Audio systems
  • RF circuits, etc.


  • High ripple rejection ratio :

    R.R.=100dB (typ.) @f=1kHz, VOUT=2.8V

    R.R.=68dB (typ.) @f=100kHz, VOUT=2.8V
  • Low output noise voltage : VNO=5μVrms (typ.) @10Hz≤f≤100kHz
  • Low quiescent current : IB(ON)=7μA (typ.) @IOUT=0mA
  • Thin and compact DFN4C package : 1.0×1.0mm, t=0.38mm (typ.)

Main Specifications

Part number





Size typ. (mm)


1.0×1.0, t=0.38



(@Ta= -40 to 85°C)

Output current IOUT (mA)


Output voltage VOUT (V)

0.9 to 4.5

Input voltage VIN (V)

1.8 to 5.5



(Unless otherwise

specified, @Tj=25°C)

Output voltage

VOUT min/max (mV)

@VOUT<1.8V, Tj= -40 to 85°C


Output voltage

VOUT min/max (%)

@VOUT≥1.8V, Tj= -40 to 85°C


Quiescent current

IB(ON) typ. (μA)



Ripple rejection ratio

R.R. typ. (dB)

@f=1kHz, Ta=25°C


@f=10kHz, Ta=25°C


@f=100kHz, Ta=25°C


@f=1MHz, Ta=25°C


@f=2MHz, Ta=25°C


Output noise voltage

VNO typ. (μVrms)

@IOUT=10mA, Ta=25°C


Drop-out voltage

VDO typ. (mV)

@VOUT=2.8V, IOUT=300mA


Load transient response

⊿VOUT typ. (mV)





Output voltage slew rate

VOUTSR typ. (mV/μs)



Sample Check & Availability

Buy Online


[1] Among LDO regulators with a maximum output of 300 mA, Toshiba survey as of October 28, 2020.

[2] The ripple rejection ratio (R.R. : Ripple rejection Ratio) is the same as the power supply rejection rate (PSRR: Power Supply Rejection Ratio) indicated on other manufacturers' products.

[3] 32 products. The number showing output voltage goes into "xx".

[4] Except control pull down current (ICT)

Follow the link below for more on the new products.

TCR3RM Series


Follow the link below for more on Toshiba’s LDO regulators.

Low-Dropout Regulators (LDO Regulators)


To check availability of the new products at online distributors, visit:



Customer Inquiries

Small Signal Device Sales & Marketing Dept.

Tel: +81-3-3457-3411


*Company names, product names, and service names may be trademarks of their respective companies.

*Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation combines the vigor of a new company with the wisdom of experience. Since becoming an independent company in July 2017, the company has taken its place among the leading general devices companies, and offers its customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Its 24,000 employees around the world share a determination to maximize the value of its products, and emphasize close collaboration with customers to promote co-creation of value and new markets. The company looks forward to building on annual sales now surpassing 750-billion yen (US$6.8 billion) and to contributing to a better future for people everywhere.

Find out more about Toshiba Electronic Devices & Storage Corporation at https://toshiba.semicon-storage.com/ap-en/top.html

View source version on businesswire.com: https://www.businesswire.com/news/home/20201029005516/en/

Media Inquiries:
Chiaki Nagasawa
Digital Marketing Department
Toshiba Electronic Devices & Storage Corporation
Tel: +81-3-3457-4963

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