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SLVS803B – NOVEMBER 2008 – REVISED MARCH 2009
ULTRA SMALL, LOW INPUT VOLTAGE, LOW r
ON
, LOAD SWITCHES
1
FEATURES
Low Input Voltage: 1.0 V to 3.6 V
Ultra-Low ON Resistance
– r
ON
= 78 mΩ at V
IN
= 3.6 V
– r
ON
= 93 mΩ at V
IN
= 2.5 V
– r
ON
= 109 mΩ at V
IN
= 1.8 V
– r
ON
= 146 mΩ at V
IN
= 1.2 V
500-mA Maximum Continuous Switch Current
Ultra Low Quiescent Current: 82 nA at 1.8 V
Ultra Low Shutdown Current: 44 nA at 1.8 V
Low Control Input Thresholds Enable Use of
1.2-V/1.8-V/2.5-V/3.3-V Logic
Controlled Slew Rate to Avoid Inrush Currents
– TPS22901 and TPS22902: 40-µs t
r
– TPS22902B: 220-µs t
r
ESD Performance Tested Per JESD 22
– 2000-V Human-Body Model
(A114-B, Class II)
– 1000-V Charged-Device Model (C101)
Four-Terminal Wafer-Chip-Scale Package
(WCSP)
– 0.8 mm × 0.8 mm, 0.4 mm Pitch,
0.5 mm Height
YFP PACKAGE
B
A
2 1
Laser Marking View
B
A
1 2
Bump View
APPLICATIONS
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•
•
•
•
Personal Digital Assistants (PDAs)
Cellular Phones
GPS Devices
MP3 Players
Digital Cameras
Peripheral Ports
Portable Instrumentation
RF Modules
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DESCRIPTION
TPS22901, TPS22902, and TPS22902B are
ultra-small, low ON resistance (r
ON
) load switches
with controlled turn on. The devices contain a
P-channel MOSFET that operates over an input
voltage range of 1.0 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
TPS22902 and in TPS22902B, a 120-Ω on-chip load
resistor is added for output quick discharge when the
switch is turned off.
TPS22901, TPS22902, and TPS22902B are available
in a space-saving 4-terminal WCSP with 0.4-mm
pitch (YFP). The devices are characterized for
operation over the free-air temperature range of
–40°C to 85°C.
TERMINAL ASSIGNMENTS
B
A
ON
V
IN
2
GND
V
OUT
1
•
•
r
ON
at 1.8 V
(TYP)
TPS22901
TPS22902
TPS22902B
(1)
109 mΩ
109 mΩ
109 mΩ
SLEW
RATE
(TYP at
1.8 V)
40
µs
40
µs
220
µs
QUICK OUTPUT
DISCHARGE
(1)
MAX OUTPUT
CURRENT
500 mA
ENABLE
Active high
Active high
Active high
Yes
Yes
500 mA
500 mA
This feature discharges the output of the switch to ground through a 120-Ω resistor, preventing the
output from floating.
1
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 © 2008–2009, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
