SIP32448 Datasheet, PDF (1/12 Pages) Vishay Siliconix – 1.7 V to 5.5 V, 3 A Load Switch with Negative VIN Tolerance

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SiP32448, SiP32449
Vishay Siliconix
1.7 V to 5.5 V, 3 A Load Switch with Negative V_IN Tolerance
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
turn on until V_IN is greater than 2.5 V.
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
is off or V_IN is ground.
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_ON from 1.8 V to 5 V
• 3 A maximum continuous switch current
• Slew rate controlled turn-on: 2.5 ms at 3.6 V
• Constant low control logic: V_IH = 1.15 V, V_IL = 0.7 V
• 2 V UVLO when EN is open
Available
• Reverse current blocking when switch is off or V_IN is ground
• 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
please see www.vishay.com/doc?99912
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}
V_IN
C_IN
2.2 µF
IN
OUT
SiP32448, SiP32449
EN
EN
GND
V_OUT
C _OUT
1 µF
GND
GND
Fig. 1 - SiP32448, SiP32449 Typical Application Circuit
S15-1920-Rev. C, 24-Aug-15
1
Document Number: 62959
For technical questions, contact: [e-mail]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000