TPS22921, TPS22922, TPS22922B
www.ti.com........................................................................................................................................ SLVS749A–NOVEMBER 2008–REVISED DECEMBER 2008
LOW INPUT VOLTAGE, ULTRA-LOW rON LOAD SWITCHES
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FEATURES
APPLICATIONS
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PDAs
Cell Phones
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Input Voltage: 0.9 V to 3.6 V
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Ultra-Low ON Resistance
GPS Devices
MP3 Players
Peripheral Ports
Portable Media Players
RF Modules
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rON = 14 mΩ at VIN = 3.6 V
rON = 20 mΩ at VIN = 2.5 V
rON = 33 mΩ at VIN = 1.8 V
rON = 67 mΩ at VIN = 1.2 V
rON = 116 mΩ at VIN = 1.0 V
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2-A Maximum Continuous Switch Current
Ultra-Low Quiescent Current: 78 nA at 1.8 V
Ultra-Low Shutdown Current: 35 nA at 1.8 V
DESCRIPTION
TPS22921, TPS22922, and TPS22922B are ultra-low
rON load switches with controlled turn on.
TPS22921/2/2B contain an ultra-low rON P-channel
MOSFET that can operate over an input voltage
range of 0.9 V to 3.6 V. The switch is controlled by an
on/off input (ON), which is capable of interfacing
directly with low-voltage control signals. In TPS22922
and in TPS22922B, a 120-Ω on-chip load resistor is
added for output quick discharge when switch is
turned off. The rise time (slew rate) of the device is
internally controlled in order to avoid inrush current:
TPS22921 and TPS22922 feature a 30 µs rise time
whereas TPS22922B is 200 µs.
Low Threshold Control Input Enable the use of
1.2V/1.8V/2.5V/3.3V Logic
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Controlled Slew Rate to Avoid Inrush Currents
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TPS22921 and TPS22922: 30 µS
TPS22922B: 200 µS
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ESD Performance Tested Per JESD 22
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3000-V Human-Body Model
(A114-B, Class II)
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1000-V Charged-Device Model (C101)
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Six Terminal Wafer-Chip-Scale Package
TPS22921, TPS22922, and TPS22922B feature ultra
low quiescent and shutdown current and are available
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0.9 mm × 1.4 mm, 0.5 mm Pitch,
0.5 mm Height
in
space-saving
6-terminals
wafer-chip-scale
packages (WCSP: YZP with 0.5-mm pitch and YFP
with 0.4-mm pitch) which make it ideal for portable
electronics. The devices are characterized for
operation over the free-air temperature range of
–40°C to 85°C.
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0.8 mm × 1.2 mm, 0.4 mm Pitch,
0.5 mm Height
YFP, YZP, AND YZT PACKAGES
TERMINAL ASSIGNMENTS
C
B
A
ON
VIN
VIN
2
GND
VOUT
VOUT
1
C
B
A
C
B
A
2
1
1
2
Laser Marking View Bump View
rON AT 1.8 V
(TYP)
SLEW RATE
(TYP at 1.8V)
QUICK OUTPUT
MAX OUTPUT
CURRENT
ENABLE
DISCHARGE(1)
TPS22921
TPS22922
TPS22922B
33 mΩ
33 mΩ
33 mΩ
30 µs
30 µs
2 A
2 A
2 A
active high
active high
active high
Yes
Yes
200 µs
(1) This feature discharges the output of the switch to ground through a 120-Ω resistor, preventing the
output from floating.
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated