TPS22924B Datasheet, PDF (1/17 Pages) Texas Instruments – ULTRA-SMALL, LOW-INPUT-VOLTAGE, LOW rON LOAD SWITCH

TPS22924B
www.ti.com
SLVSAR3A – APRIL 2011 – REVISED JUNE 2011
ULTRA-SMALL, LOW-INPUT-VOLTAGE, LOW r_ON LOAD SWITCH
Check for Samples: TPS22924B
FEATURES
1
• Integrated Single Load Switch
• Input Voltage: 0.75 V to 3.6 V
• Ultra-Low ON Resistance
– r_ON = 18.3 mΩ at V_IN = 3.6 V
– r_ON = 18.5 mΩ at V_IN = 2.5 V
– r_ON = 19.6 mΩ at V_IN = 1.8 V
– r_ON = 19.4 mΩ at V_IN = 1.2 V
– r_ON = 20.3 mΩ at V_IN = 1.0 V
– r_ON = 22.7 mΩ at V_IN = 0.75 V
• 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
– 5000-V Human-Body Model
(A114-B, Class II)
– 1000-V Charged-Device Model (C101)
APPLICATIONS
• 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
DESCRIPTION
The TPS22924B is a small, ultra-low r_ON 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.
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.
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
SMPS
C_IN = 1 µF ^CL
V_IN
ON
OFF
TPS22924B
V_OUT
GND
GND
NOTE: SMPS = Switched-mode power supply
LOAD
C_L
R_L
GND
Table 1. FEATURE LIST
TPS22924B
r_ON (TYP)
AT 3.6 V
18.3 mΩ
SLEW RATE
(TYP)
AT 3.6 V
100 μs
QUICK
OUTPUT
DISCHARGE ⁽¹⁾
Yes
MAXIMUM
OUTPUT
CURRENT
2A
ENABLE
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.
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 © 2011, Texas Instruments Incorporated