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Toshiba’s New Small Surface Mount LDO Regulators Lower Power Consumption and Bring Longer Operating Times to Battery-driven Devices

News provided by Toshiba Electronic Devices & Storage Corporation
March 21, 2019 15:25 KST

TOKYO--(Business Wire / Korea Newswire) March 21, 2019 -- Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has launched two new series of small surface mount LDO regulators for application in the power supply of mobile devices, imaging and audio-visual products. The 40 regulators in the TCR5BM series support a dropout voltage as low as 100mV and a maximum output current of 500mA, and 40 more in the TCR8BM series extend support to 170mV and 800mA. The TCR5BM and TCR8BM series are both available with VOUT as low as 0.8V, or as high as 3.6V.

Both series are suited to applications that include power supply for MCU, RF devices, and camera CMOS sensors in mobile devices or imaging and audio-visual equipment, which increasingly use lower voltages around 1V.

Mass production started progressively from January 2019 and shipments begin today.

By using a low on-resistance N-channel MOSFET fabricated with the latest generation process and external bias voltage, both series have cut dropout voltage, a cause of power loss, to about 67% that of Toshiba’s current products[1], the lowest in the industry[2].

In addition, with a 98 dB (typ.) ripple rejection ratio, the new products deliver stable operation resistant to high frequency noise from the external environment and DC-DC converters, both causes of malfunction. They also deliver a fast load transient response that prevents malfunctioning due to swift switching of IC operation modes.

Quiescent current is about 50% lower than other high current LDO regulators in the market[2], realizing lower power consumption by devices and longer operating times for battery-driven devices.

Both series are housed in the small surface mount 1.2x1.2mm DFN5B[3] package, which is excellent for space constrained designs. The TCR5BM series supports up to 500mA and the TCR8BM series supports up to 800mA, allowing users to design products more easily.


Mobile devices, image & audio visual equipment

· CMOS sensor power supply
· MCU power supply
· RF power supply


· Low dropout voltage:
VDO = 100 mV (typ.) (TCR5BM series)
VDO = 170 mV (typ.) (TCR8BM series)
· High ripple rejection ratio: R.R. = 98 dB (typ.)
· Fast load response characteristics ensure stable operation when the operation mode changes
Main Specifications (To view the table, please visit

Product Lineup (To view the table, please visit

[1] In comparison with Toshiba’s current TCR5AM series.
[2] As of March 20, 2019, Toshiba survey.
[3] DFN5B package: 1.2×1.2 mm (typ.)

To check availability of the new products at online distributors, please visit:
TCR5BM series
TCR8BM series

For more information about these new products, please visit:
TRC5BM series®ion=apc&lang=en&cc=&scroll_x=0&scroll_y=0&t%5B%5D=0%7CTCR5BM
TCR8BM series®ion=apc&lang=en&cc=&scroll_x=0&scroll_y=0&t%5B%5D=0%7CTCR8BM

Customer Inquiries:
Small Signal Device Sales & Marketing Department
Tel: +81-3-3457-3411

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, we have taken our place among the leading general devices companies, and offer our customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Our 22,000 employees around the world share a determination to maximize the value of our products, and emphasize close collaboration with customers to promote co-creation of value and new markets. We look forward to building on annual sales now surpassing 800-billion yen (US$7 billion) and to contributing to a better future for people everywhere.
Find out more about us at

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Toshiba Electronic Devices & Storage Corporation
Digital Marketing Department
Chiaki Nagasawa

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