TPS22924B
www.ti.com
SLVSAR3A –APRIL 2011–REVISED JUNE 2011
ULTRA-SMALL, LOW-INPUT-VOLTAGE, LOW rON LOAD SWITCH
Check for Samples: TPS22924B
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FEATURES
DESCRIPTION
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Integrated Single Load Switch
Input Voltage: 0.75 V to 3.6 V
Ultra-Low ON Resistance
The TPS22924B is a small, ultra-low rON load switch
with controlled turn on. The device contains a
N-channel MOSFET that can operate over an input
voltage range of 0.75 V to 3.6 V. An integrated
charge pump biases the NMOS switch to achieve a
minimum switch ON resistance. The switch is
controlled by an on/off input (ON), which is capable of
interfacing directly with low-voltage control signals.
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rON = 18.3 mΩ at VIN = 3.6 V
rON = 18.5 mΩ at VIN = 2.5 V
rON = 19.6 mΩ at VIN = 1.8 V
rON = 19.4 mΩ at VIN = 1.2 V
rON = 20.3 mΩ at VIN = 1.0 V
rON = 22.7 mΩ at VIN = 0.75 V
A 1250-Ω on-chip load resistor is added for output
quick discharge when the switch is turned off. The
rise time of the device is internally controlled to avoid
inrush current. The TPS22924B features a rise time
of 100 µs at 3.6 V.
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Ultra Small CSP-6 package
0.9 mm x 1.4 mm, 0.5-mm Pitch
2-A Maximum Continuous Switch Current
Low Shutdown Current
Low Threshold Control Input
Controlled Slew Rate to Avoid Inrush Currents
Quick Output Discharge Transistor
ESD Performance Tested Per JESD 22
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The TPS22924B is available in an ultra-small
space-saving
6-pin
CSP
package
and
is
characterized for operation over the free-air
temperature range of –40ºC to 85ºC.
Figure 1. TYPICAL APPLICATION
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5000-V Human-Body Model
(A114-B, Class II)
LOAD
V
V
IN
OUT
SMPS
ON
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1000-V Charged-Device Model (C101)
TPS22924B
C
R
L
C
L
L
C
= 1 µF
IN
OFF
APPLICATIONS
GND
GND
GND
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Battery Powered Equipment
Portable Industrial Equipment
Portable Medical Equipment
Portable Media Players
Point Of Sales Terminal
GPS Devices
Digital Cameras
Notebooks / Tablet PCs / eReaders
Smartphones
NOTE: SMPS = Switched-mode power supply
Table 1. FEATURE LIST
SLEW RATE
(TYP)
AT 3.6 V
QUICK
OUTPUT
MAXIMUM
OUTPUT
CURRENT
rON (TYP)
AT 3.6 V
ENABLE
DISCHARGE(1)
TPS22924B
18.3 mΩ
100 μs
Yes
2 A
Active high
(1) This feature discharges the output of the switch to ground through a 1250-Ω resistor, preventing the
output from floating. See the Output Pulldown section in Application Information.
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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