FDZ2040L データシートの表示（PDF） - Fairchild Semiconductor

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FDZ2040L

Integrated Load Switch

Fairchild Semiconductor 

Operation Description

The FDZ2040L is a low RDS(ON) P-Channel load switch packaged in space saving 0.8x0.8 WL-CSP.

The core of the device is a 80mΩ P-Channel MOSFET and capable of functioning over a wide input operating range of 1.6-4 V.

Applications Information

Figure 21. Typical Application

Input Capacitor

To reduce device inrush current effect, a 0.1uF ceramic capacitor, CIN is recommended close to VIN pin. A higher value of CIN

can be used to further reduce the voltage drop experienced as the switch is turned on into a large capacitive load.

Output Capacitor

FDZ2040L switch works without an output capacitor. However, if parasitic board inductance forces Vout below GND when

switching off, a 1nF capacitor, COUT, should be placed between Vout and GND.

Notes: The intrinsic diode for P-Channel load switch would conduct if VOUT is greater than VIN, by a diode drop

Demo Board Layout

Figure 22. Top View

© 2012 Fairchild Semiconductor Corporation

FDZ2040L Rev.B1

9

Figure 23. Bottom View

www.fairchildsemi.com

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