GRM21BR60J226ME39 datasheet(10/16 Pages) ONSEMI

Part #	GRM21BR60J226ME39

Description	3 MHz, 2 A Synchronous Buck Converter

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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10 / 16 page

NCP6323, NCV6323

www.onsemi.com

10

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

I

MAX + ILMT *

V

OUT @ VIN * VOUT

2

@ V

IN @ f

SW @ 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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GRM21BR60J226ME39 Datasheet(PDF) 10 Page - ON Semiconductor

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