Part Number Search

Cross Reference Search

About information presented in this cross reference

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.

Keyword Search

Parametric Search

Stock Check & Purchase

Select Product Categories

Select Application

Find everything you need for your next product design. Simply select an application and click through to the block diagram to discover our semiconductor solutions.

New Products / News

Innovation Centre

At the Toshiba Innovation Centre we constantly strive to inspire you with our technologies and solutions. Discover how to place us at the heart of your innovations.

Chapter IV : Local Power Supply ICs : Functions of LDO

(1)Under voltage lock out (UVLO) 
This function places the IC in the standby state when the input voltage drops below the specified input voltage so that the internal circuit becomes unstable and malfunction does not occur.
(2)Current limit
This function protects against degradation and destruction due to heat generation of the device itself when the output terminal VOUT goes into an unintentional short mode state. There are two types of overcurrent protection: the foldback type that simultaneously reduces the output current and output voltage, and the current limiter type that reduces the output voltage while keeping the output current constant.
(3)Thermal shut down (TSD)
It is a circuit to prevent deterioration and destruction of the device because of remarkable ambient temperature rise, heat generation of the device itself due to unintentional high current load etc. When the specified temperature is detected by the internal temperature detection circuit, the output transistor is turned off.
(4)Output discharge
When the output transistor is turned off, the terminal voltage of VOUT may remain for a certain time depending on the load capacitance connected to the output terminal. This circuit rapidly discharges the charge accumulated on the load side and drops the VOUT terminal voltage to near the IC GND.

LDO block diagram
LDO block diagram

Chapter IV : Local Power Supply ICs

Related information

A new window will open