NCP335 datasheet(9/10 Pages) ONSEMI

Part #	NCP335

Description	2A Ultra-Small Controlled Load Switch

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP334, NCP335

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9

Figure 14. Routing Example 2 oz, 4 Layers, 60

5C/W

Example of application definition.

T

J * TA + R

qJA

Pd

+ RqJA RDS(on) I2

TJ: Junction Temperature.

TA: Ambient Temperature.

Rq = Thermal resistance between IC and air, through PCB.

RDS(on): Intrinsic resistance of the IC MOSFET.

I: load DC current.

Taking into account of Rtheta obtain with:

1 oz, 2 layers: 100

°C/W.

At 2 A, 25

°C ambient temperature, RDS(on) 42 mW @ VIN

4.2 V, the junction temperature will be:

T

J + TA ) R

q

Pd

+ 25 ) 0.042

22

100

+ 41.8° C W

Taking into account of Rq obtain with:

2 oz, 4 layers: 60

°C/W.

At 2 A, 25

°C ambient temperature, RDS(on) 42 mW @ VIN

4.2 V, the junction temperature will be:

T

J + TA ) R

q

Pd

+ 25 ) 0.042

22

60

+ 35° C.

ORDERING INFORMATION

Device

Marking

Package

Shipping†

NCP334FCT2G

AD

WLCSP 0.96 x 0.96 mm

(Pb−Free)

3000 / Tape & Reel

NCP335FCT2G

AA

WLCSP 0.96 x 0.96 mm

(Pb−Free)

3000 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

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