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BDxxFC0 series

Datasheet

Datasheet

TSZ02201-0G2G0A600040-1-2

© 2016 ROHM Co., Ltd. All rights reserved.

16.May.2016 Rev.004

www.rohm.com

TSZ22111・15・001

Operation Note 11 Measurement circuit (BD00FC0W)

12. EN pin

the output voltage would be unstable or indefinite.

13. For a steep change of the Vcc voltage

Because MOSFET for output Transistor is used when an input voltage change is very steep, it may evoke large current.

When selecting the value of external circuit constants, please make sure that the operation on the actual application

takes these conditions into account.

14. For infinitesimal fluctuations of output voltage.

For applications that have infinitesimal fluctuations of the output voltage caused by some factors (e.g. disturbance noise,

input voltage fluctuations, load fluctuations, etc.), please take enough measures to avoid some influence (e.g. insert a

filter, etc.).

15. Over current protection circuit (OCP)

The IC incorporates an integrated over-current protection circuit that operates in accordance with the rated output

capacity. This circuit serves to protect the IC from damage when the load becomes shorted. It is also designed to limit

output current (without latching) in the event of a large and instantaneous current flow from a large capacitor or other

component. These protection circuits are effective in preventing damage due to sudden and unexpected accidents.

However, the IC should not be used in applications characterized by the continuous or transitive operation of the

protection circuits.

16. Thermal Shutdown circuit (TSD)

The IC incorporates a built-in thermal shutdown circuit, which is designed to turn the IC off, completely, in the event of

thermal overload. It is not designed to protect the IC from damage or guarantee its operation. IC’s should not be used

after this function has activated, or in applications where the operation of this circuit is assumed.

0.001

0.01

0.1

1

10

100

0

200

400

600

800

1000

Io(mA)

Unstable operating region

Stable operating region

4.0V ≤ Vcc ≤ 26.5V

1.0V ≤ Vo < 3.0V

(Cout and Ceramic capacitor 10µF is connected in

parallel.)

-25°C ≤ Ta ≤ +85°C

2.2µF ≤ Cin ≤ 100µF

1µF ≤ Cout ≤ 100µF

4.0V ≤ Vcc ≤ 26.5V

1.0V ≤ Vo < 3.0V

(Cout and Ceramic capacitor 10µF is connected in parallel.)

-25°C ≤ Ta ≤ +85°C

0A ≤ Io ≤ 1A

Cout_ESR vs Io

1.0V ≤ Vo < 3.0V

Cout and Ceramic capacitor 10µF is

connected in parallel.

(Reference data)

Cin vs Cout

1.0V ≤ Vo < 3.0V

Cout and Ceramic capacitor 10µF is

connected in parallel.

(Reference data)

Vcc

EN

GND

FB

Vo

Cin

(1µF or higher)

(5.0V)

(4.0V to 26.5V)

(5k to 10kΩ)

Output

load

Io(Rout)

Cout

(1µF

or higher)

ESR

(0.001Ω

or higher)

10µF

1

10

100

110

100

Cout（µF）

Stable operating region

2.2

Unstable

operating region