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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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DC Power Supply

Example power supply circuit in a battery powered system

Circuit Description

Example power supply circuit in a battery powered system

In the power supply management of electric toothbrushes using secondary batteries, the important points are the transient response that minimizes voltage fluctuations even in sudden current fluctuations that occur during motor operation and how the noise generated during motor rotation reduces the impact on the power supply line. The power supplied to the MCUs, Bluetooth SoCs and ICs handling analogue signals may become unstable during system operation, or noises may cause system malfunction. The use of LDOs to avoid these conditions is particularly important for MCUs and Bluetooth SoCs that are responsible for low-voltage and high-current motor control.

Toshiba offers a wide choice of LDO regulators in packages ranging from general-purpose to ultra-compact that are suitable for high-performance requirements, such as low dropout and low current consumption, which are particularly required for state-of-the-art analog circuits.

Product name

Package
(Width×Length×Height mm)

Product Overview

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TCR5BM10A

DFN5B
(1.2×1.2×0.38)

Low Drop-Out 95mV (Typ.) (@IOUT=500mA), VOUT=1.0V (Typ.), IOUT=500mA (Max)

TCR5BM12A

DFN5B
(1.2×1.2×0.38)

Low Drop-Out 105mV (Typ.) (@IOUT=500mA), VOUT=1.2V (Typ.), IOUT=500mA (Max)

TCR3UG12A

WCSP4F
(0.645×0.645×0.33)

Low quiescent current 0.34μA (Typ.) (@IOUT=0mA), VOUT=1.2V (Typ.), IOUT=300mA (Max)

TCR3UG15A

WCSP4F
(0.645×0.645×0.33)

Low quiescent current 0.34μA (Typ.) (@IOUT=0mA), VOUT=1.5V (Typ.), IOUT=300mA (Max)

Other Circuit Description

Motor Drive

Other block diagrams

Motor control unit (2)
Example of motor control circuit for head vibration (2)

Application / Electric Toothbrush

LED driver
Example of LED driving circuit for operation status display

Application / Electric Toothbrush

Wireless power supply receiving unit rectifying circuit
Example of rectifier circuit for wireless power supply

Application / Electric Toothbrush

Battery management
Example of power supply monitoring circuit for battery charging and discharging system

Application / Electric Toothbrush

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Towards achievement compact size, high reliability and long life
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