TPS22908 Datasheet, PDF (1/19 Pages) Texas Instruments – Ultra Small, Low-Input Voltage, Low RON Load Switch

www.ti.com
TPS22908
SLVSBI7A – JULY 2012 – REVISED AUGUST 2012
Ultra Small, Low-Input Voltage, Low R_ON Load Switch
Check for Samples: TPS22908
FEATURES
1
• Low Input Voltage: 1.0 V to 3.6 V
• Ultra-Low ON-State Resistance (R_ON)
– R_ON = 28 mΩ at VIN = 3.6 V
– R_ON = 33 mΩ at VIN = 2.5 V
– R_ON = 42 mΩ at VIN = 1.8 V
– R_ON = 70 mΩ at VIN = 1.2 V
• 1-A Maximum Continuous Switch Current
• Quiescent Current <1 µA
• Shutdown Current <1 µA
• Low Control Input Thresholds Enable Use of
Low-Voltage Logic
• Controlled Slew Rate to Avoid Inrush Currents
• Ultra Small CSP-4 Package 0.9 mm × 0.9 mm,
0.5-mm Pitch, 0.5-mm Height
• Quick Output Discharge (QOD)
APPLICATIONS
• Battery Powered Equipment
• Portable Industrial Equipment
• Portable Medical Equipment
• Portable Media Players
• Point of Sales Terminal
• GPS Devices
• Digital Cameras
• Portable Instrumentation
• Smartphones / Tablets
Power
Supply
CIN
VIN
ON
ON
OFF
VOUT
CL
TPS22908
GND
Figure 1. Typical Application
RL
GND
DESCRIPTION
The TPS22908 is an ultra small, low R_ON load switch with controlled turn on. The device contains 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.
The TPS22908 is available in a space-saving 4-terminal WCSP with 0.5-mm pitch (YZT). The device is
characterized for operation over the free-air temperature range of –40°C to 85°C.
DEVICE
TPS22908
R_ON (typical)
AT 3.6 V
28 mΩ
FEATURE LIST
RISE TIME (typical)
AT 3.6 V
QUICK OUTPUT
DISCHARGE ⁽¹⁾
105 µs
Yes
MAXIMUM
CURRENT
1000 mA
ENABLE
Active high
(1) This feature discharges the output of the switch to ground through an 80-Ω resistor, preventing the output from floating.
T_A
–40°C to 85°C
4-YZT
ORDERING INFORMATION
PACKAGE
ORDERABLE PART NUMBER
Reel of 250
TPS22908YZTT
Tape of 3000
TPS22908YZTR
TOP MARKING
AT
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 © 2012, Texas Instruments Incorporated