TPS22933A Datasheet, PDF (1/17 Pages) Texas Instruments – Small, Triple-Input Power Multiplexer with Auto-Select and Low Drop-out Voltage Regulator

TPS22933
www.ti.com
SLVSB34 – OCTOBER 2011
Small, Triple-Input Power Multiplexer with Auto-Select and Low Drop-out Voltage
Regulator
Check for Samples: TPS22933
FEATURES
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• Three Integrated Load Switches Automatically
Choose Highest Input
• Integrated 3.6-V fixed LDO
• Switched and Always on LDO Outputs
• Small µQFN package 1.5mm × 1.5mm
• Input Voltage Range: 2.5-V to 12-V
• Low ON-Resistance (r_ON)
– r_ON = 2.4Ω at VIN = 5.0-V
– r_ON = 2.6Ω at VIN = 4.2-V
• 50-mA Maximum Continuous Current
• Low Threshold Control Input (EN)
• Switchover time 18-µs Typical
TYPICAL APPLICATION
LiIon Battery
USB Port
DC Adapter
Controller
BAT
USB
DC_IN
EN
CAP
LDO
LOUT
VOUT
GND
Switched
Load
Always ON
Load
APPLICATIONS
• Smart Phones
• GPS Devices
• Digital Cameras
• Portable Industrial Equipment
• Portable Medical Equipment
• Portable Media Players
• Portable Instrumentation
DESCRIPTION
The TPS22933 is a small, low r_ON, triple-input power
multiplexer with auto-input selection and a Low
Drop-Out linear regulator. The device contains three
P-channel MOSFETs that can operate over an input
voltage range of 2.5-V to 12-V. The TPS22933
automatically selects the highest level (from BAT,
USB, and DC_IN) and enables that input to source
the LDO. LOUT is an always-on output from the LDO.
The Enable function (EN pin) allows VOUT to be
switched on or off, enables a quick discharge resistor,
and is capable of interfacing directly with low-voltage
control signals.
The TPS22933 is available in a small, space-saving
8-pin µQFN package and is characterized for
operation over the free-air temperature range
of –40ºC to 85ºC.
TPS22933A
r_ON (typical)
at 5.0 V
2.4 Ω
FEATURE LIST⁽¹⁾
OUTPUT VOLTAGE
QUICK OUTPUT
DISCHARGE
3.6 V
yes
MAXIMUM
OUTPUT CURRENT
50 mA
VOUT ENABLE
Active High
(1) This feature discharges the output of the switch to ground through a 64-Ω resistor, preventing the output from floating
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated