TPS22921_10 Datasheet, PDF (1/27 Pages) Texas Instruments – LOW INPUT VOLTAGE, ULTRA-LOW rON LOAD SWITCHES

TPS22921, TPS22922, TPS22922B
www.ti.com........................................................................................................................................ SLVS749A – NOVEMBER 2008 – REVISED DECEMBER 2008
LOW INPUT VOLTAGE, ULTRA-LOW r_ON LOAD SWITCHES
FEATURES
1
• Input Voltage: 0.9 V to 3.6 V
• Ultra-Low ON Resistance
– r_ON = 14 mΩ at V_IN = 3.6 V
– r_ON = 20 mΩ at V_IN = 2.5 V
– r_ON = 33 mΩ at V_IN = 1.8 V
– r_ON = 67 mΩ at V_IN = 1.2 V
– r_ON = 116 mΩ at V_IN = 1.0 V
• 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
• Low Threshold Control Input Enable the use of
1.2V/1.8V/2.5V/3.3V Logic
• Controlled Slew Rate to Avoid Inrush Currents
– TPS22921 and TPS22922: 30 µS
– TPS22922B: 200 µS
• ESD Performance Tested Per JESD 22
– 3000-V Human-Body Model
(A114-B, Class II)
– 1000-V Charged-Device Model (C101)
• Six Terminal Wafer-Chip-Scale Package
– 0.9 mm × 1.4 mm, 0.5 mm Pitch,
0.5 mm Height
– 0.8 mm × 1.2 mm, 0.4 mm Pitch,
0.5 mm Height
APPLICATIONS
• PDAs
• Cell Phones
• GPS Devices
• MP3 Players
• Peripheral Ports
• Portable Media Players
• RF Modules
DESCRIPTION
TPS22921, TPS22922, and TPS22922B are ultra-low
r_ON load switches with controlled turn on.
TPS22921/2/2B contain an ultra-low r_ON 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.
TPS22921, TPS22922, and TPS22922B feature ultra
low quiescent and shutdown current and are available
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.
YFP, YZP, AND YZT PACKAGES
TERMINAL ASSIGNMENTS
C
C
B
B
A
A
21
12
Laser Marking View Bump View
C
ON
GND
B
V_IN
V_OUT
A
V_IN
V_OUT
2
1
TPS22921
TPS22922
TPS22922B
r_ON AT 1.8 V
(TYP)
33 mΩ
33 mΩ
33 mΩ
SLEW RATE
(TYP at 1.8V)
30 µs
30 µs
200 µs
QUICK OUTPUT
DISCHARGE ⁽¹⁾
Yes
Yes
MAX OUTPUT
CURRENT
2A
2A
2A
ENABLE
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
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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