TPS22901 Datasheet, PDF (1/25 Pages) Texas Instruments – ULTRA SMALL, LOW INPUT VOLTAGE, LOW rON, LOAD SWITCHES

TPS22901, TPS22902, TPS22902B
www.ti.com............................................................................................................................................... SLVS803B – NOVEMBER 2008 – REVISED MARCH 2009
ULTRA SMALL, LOW INPUT VOLTAGE, LOW r_ON, LOAD SWITCHES
FEATURES
1
• 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
B
A
A
21
12
Laser Marking View Bump View
APPLICATIONS
• Personal Digital Assistants (PDAs)
• Cellular Phones
• GPS Devices
• MP3 Players
• Digital Cameras
• Peripheral Ports
• Portable Instrumentation
• RF Modules
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
ON
GND
A
V_IN
V_OUT
2
1
TPS22901
TPS22902
TPS22902B
r_ON at 1.8 V
(TYP)
109 mΩ
109 mΩ
109 mΩ
SLEW
RATE
(TYP at
1.8 V)
40 µs
40 µs
220 µs
QUICK OUTPUT
DISCHARGE ⁽¹⁾
Yes
Yes
MAX OUTPUT
CURRENT
ENABLE
500 mA
500 mA
500 mA
Active high
Active high
Active high
(1) 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