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Toshiba Launches High Voltage, Low Current Consumption LDO Regulators that Help to Lower Equipment Stand-By Power

Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched the TCR1HF series of LDO regulators that deliver high voltages, a wide input voltage range, and the industry’s lowest[1] stand-by current consumption. Shipment of the first three products in the new series, “TCR1HF18B,” “TCR1HF33B,” and “TCR1HF50B,” which offer output voltages of 1.8V, 3.3V, and 5.0V, respectively, starts today.

This press release features multimedia. View the full release here:

Toshiba: TCR1HF series, high voltage, low current consumption LDO regulators that help to lower equipment stand-by power. (Graphic: Business Wire)

Toshiba: TCR1HF series, high voltage, low current consumption LDO regulators that help to lower equipment stand-by power. (Graphic: Business Wire)

To reduce the power consumption of an electronic product in a standby mode when using a power supply circuit with an LDO regulator, it is necessary the power supply is directly connected to the LDO regulator, and power consumption is reduced by turning off the internal circuit.

The new products support a wide input voltage range of 4V to 36V, which allows them to connect to the 4V to 20V power supply used for USB PD[2], and to 24V power supply.

They also feature a stand-by current consumption of 1uA (typ.), the lowest in the industry[1], allowing electronic equipment to maintain stand-by operation with very low power consumption. A fast load transient response of -60mV/+50mV (typ.) ensures they deliver stable output voltage during the sudden change in current when a product transitions from stand-by to an operating state.

A reference design “Power multiplexer circuit” using the new product is available.

Toshiba will continue to expand TCR1HF series line-up by adding products with different functions or output voltage values for diverse applications.


[1] Stand-by current comparison with LDO regulators with the same ratings. As of May 2023, Toshiba survey.

[2] USB PD(USB Power Delivery): A standard for fast charging that uses USB to provide power up to the highest of 100W.


  • Consumer / Personal equipment (Mobile, Note-PC, Home Appliances, etc.)
  • Industrial equipment


  • Wide range input voltage: VIN=4V to 36V
  • Low current consumption: IBON=1μA (typ.)
  • Maximum output current rating: IOUT=150mA
  • Fast load transient response: ⊿VOUT= -60mV/+50mV (typ.) (IOUT = 0 mA ⇔ 10 mA)
  • General-purpose package SOT-25 (SMV)

Main Specifications

Part number






SOT-25 (SMV)

Size typ. (mm)

2.8 x 2.9, t=1.1



Input voltage VIN (V)

4 to 36

Operation temperature Topr (°C)

-40 to 125



(Unless otherwise



Output voltage VOUT typ. (V)




Output voltage accuracy VOUT (%)



Quiescent current IBON typ. (μA)



Stand-by current IB(OFF1) typ. (μA)



Load transient response


typ. (mV)





Thermal shutdown threshold TSDH (°C)

Tj rising



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Follow the links below for more on the new products.




Follow the link below for more on the reference design using the new product.

Power multiplexer circuit

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


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* 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, a leading supplier of advanced semiconductor and storage solutions, draws on over half a century of experience and innovation to offer customers and business partners outstanding discrete semiconductors, system LSIs and HDD products.

The company's 21,500 employees around the world share a determination to maximize product value, and promote close collaboration with customers in the co-creation of value and new markets. With annual sales approaching 800-billion yen (US$6.1 billion), Toshiba Electronic Devices & Storage Corporation looks forward to building and to contributing to a better future for people everywhere.

Find out more at


Customer Inquiries:

Small Signal Device Sales & Marketing Dept.

Tel: +81-44-548-2215

Contact Us

Media Inquiries:

Chiaki Nagasawa

Digital Marketing Department

Toshiba Electronic Devices & Storage Corporation

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