SiP32448, SiP32449

www.vishay.com

Vishay Siliconix

S15-1920-Rev. C, 24-Aug-15

1

Document Number: 62959

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

DESCRIPTION

The SiP32448 and SiP32449 are low resistance slew rate

controlled load switches. The part operates from 1.7 V to

5.5 V supply and can tolerate negative voltage at input to

-2 V. The integrated charge pump drivers enable the part

with low on resistance over the wide input voltage range.

Both SiP32448 and SiP32449 feature a controlled soft-on

slew rate of typical 2.5 ms that limits the inrush current for

designs of heavy capacitive load and minimizes the resulting

voltage droop at the power rails.

The SiP32448 and SiP32449 feature a constant low voltage

control logic interface over the full operation voltage range.

It can interface with low voltage control signals without extra

level shifting circuit. When EN is left open, the part will not

The SiP32449 has a output discharge to help discharge the

output capacitor during shutdown mode for fast turn off.

The SiP32448 and SiP32449 have exceptionally low

shutdown current and provides reverse blocking to prevent

high current flowing into the power source when the switch

Both SiP32448 and SiP32449 are available in TDFN4

package of 1.2 mm x 1.6 mm x 0.55 mm.

FEATURES

• 1.7 V to 5.5 V input voltage range

• Negative input voltage tolerance down to -2 V

• 38 m

 typical R

• 3 A maximum continuous switch current

• Slew rate controlled turn-on: 2.5 ms at 3.6 V

• 2 V UVLO when EN is open

• Output discharge (SiP32449)

• ESD protected



- HBM: >6 kV



- MM: >300 V



- IEC61000-4-2 air discharge: >15 kV



- IEC61000-4-2 contact discharge: >8 kV

• Compact TDFN4 package

• Material categorization: for definitions of compliance

APPLICATIONS

• PDAs / smart phones

• Notebook / netbook computers

•Tablet PC

• Portable media players

• Digital camera

• GPS navigation devices

• Data storage devices

• Optical, industrial, medical, and healthcare devices





TYPICAL APPLICATION CIRCUIT

Fig. 1 - SiP32448, SiP32449 Typical Application Circuit

Available

SiP32448, SiP32449

IN

OUT

GND

GND

GND

EN

EN

C

2.2 µF

IN

C

1 µF

OUT