TPS22920_14 Datasheet, PDF (1/21 Pages) Texas Instruments – Ultra-Low On-Resistance, 4-A Integrated Load Switch with Controlled Turn-on

TPS22920
www.ti.com
SLVSAY8A – JUNE 2011 – REVISED JULY 2013
Ultra-Low On-Resistance, 4-A Integrated Load Switch with Controlled Turn-on
Check for Samples: TPS22920
FEATURES
1
• Integrated Load Switch
• Input Voltage Range: 0.75-V to 3.6-V
• Integrated Pass-FET r_DSON = 2mΩ (typ) at 3.6-V
• Ultra-Low ON-Resistance
– r_ON = 5.3-mΩ at 3.6-V
– r_ON = 5.4-mΩ at 2.5-V
– r_ON = 5.5-mΩ at 1.8-V
– r_ON = 5.8-mΩ at 1.2-V
– r_ON = 6.1-mΩ at 1.05-V
– r_ON = 7.3-mΩ at 0.75-V
• Ultra Small CSP-8 package 0.9mm×1.9mm,
0.5mm pitch
• 4-A Maximum Continuous Switch Current
• Shutdown Current 5.5-µA max
• Low Threshold Control Input
• Controlled slew- rate to avoid inrush current
• Quick Output Discharge Transistor
• ESD Performance Tested Per JESD 22
– 4000-V Human-Body Model
(A114-B, Class II)
– 1000-V Charged-Device Model (C101)
DESCRIPTION
The TPS22920 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 and switch currents
up to 4-A. An integrated charge pump biases the
NMOS switch in order to achieve a minimum switch
ON resistance (r_ON). The switch is controlled by an
on/off input (ON), which is capable of interfacing
directly with low-voltage control signals.
The TPS22920 has a 1250-Ω on-chip load resistor for
quick output discharge when the switch is turned off.
The TPS22920 has an internally controlled rise time
in order to reduce inrush current. The TPS22920
features a rise time of 880μS at 3.6-V.
The TPS22920 is available in an ultra-small, space-
saving 8-pin CSP package and is characterized for
operation over the free-air temperature range of
–40°C to 85°C.
SMPS
C_IN
V_IN
ON _ON
OFF
TPS22920
V_OUT
GND
C_L
R_L
GND
Figure 1. Typical Application
APPLICATIONS
• Notebook / Netbook Computer
• Tablet PC
• PDAs / Smartphones
• GPS Navigation Devices
• MP3 Players
TPS22920
r_ON (typ)
at 3.6 V
5.3- mΩ
RISE TIME
(typ) at 3.6V
880 µS
FEATURE LIST
QUICK OUTPUT
DISCHARGE ⁽¹⁾
Yes
MAXIMUM OUTPUT CURRENT
4-A
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
Application section ‘Output Pull-Down’
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 © 2011–2013, Texas Instruments Incorporated