GRM21BR71A106KE51 Ver la hoja de datos (PDF) - ON Semiconductor

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GRM21BR71A106KE51

3 MHz, 2 A Synchronous Buck Converter

ON Semiconductor 

NCP6323, NCV6323

Cycle−by−Cycle Current Limitation

The NCP/NCV6323 protects the device from over current

with a fixed−value cycle−by−cycle current limitation. The

typical peak current limit ILMT is 2.8 A. If inductor current

exceeds the current limit threshold, the P−MOSFET will be

turned off cycle−by−cycle. The maximum output current

can be calculated by

VOUT @ ǒVIN * VOUTǓ

IMAX + ILMT * 2 @ VIN @ fSW @ L

(eq. 1)

where VIN is input supply voltage, VOUT is output voltage,

L is inductance of the filter inductor, and fSW is 3 MHz

normal switching frequency.

Negative Current Protection

The NCP/NCV6323 includes a 1 A negative current

protection. It helps to protect the internal NMOS in case of

applications which require high output capacitor value.

Thermal Shutdown

The NCP/NCV6323 has a thermal shutdown protection to

protect the device from overheating when the die

temperature exceeds 170°C. After the thermal protection is

triggered, the fault state can be ended by re−applying VIN

and/or EN when the temperature drops down below 125°C.

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