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TPS22910A

更新时间： 2024-09-26 12:21:59
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20页 729K
描述
Ultra-Small, Low on Resistance Load Switch with Controlled Turn-on

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TPS22910A 数据手册

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TPS22910  
www.ti.com  
SLVSB49B –NOVEMBER 2011–REVISED APRIL 2012  
Ultra-Small, Low on Resistance Load Switch with Controlled Turn-on  
Check for Samples: TPS22910  
1
FEATURES  
DESCRIPTION  
The TPS22910 is a small, low rON load switch with  
controlled turn on. The device contains a P-channel  
MOSFET that can operate over an input voltage  
range of 1.4 V to 5.5 V. The switch is controlled by an  
on/off input (ON), which is capable of interfacing  
directly with low-voltage control signals. The  
TPS22910 is active low enable.  
•
•
Integrated Single Load Switch  
Ultra Small CSP-4 Package 0.9mm × 0.9mm,  
0.5mm Pitch  
•
•
Input Voltage Range: 1.4-V to 5.5-V  
Low ON-Resistance  
–
–
–
–
rON = 60-mΩ at VIN = 5-V  
rON = 61-mΩ at VIN = 3.3-V  
rON = 74-mΩ at VIN = 1.8-V  
rON = 84-mΩ at VIN = 1.5-V  
The slew rate of the device is internally controlled in  
order to avoid inrush current. The TPS22910 family  
has various rise time options (see Table 1).  
The TPS22910 device provides circuit breaker  
functionality by latching off the power-switch during  
reverse voltage situations. An internal reverse voltage  
comparator disables the power-switch when the  
output voltage (VOUT) is driven higher than the input  
(VIN) to quickly (10µs typ) stop the flow of current  
towards the input side of the switch. Reverse current  
protection is always active, even when the power-  
switch is disabled. Additionally, under-voltage lockout  
(UVLO) protection turns the switch off if the input  
voltage is too low.  
•
•
•
•
•
2-A Maximum Continuous Switch Current  
Low Threshold Control Input  
Controlled Slew-rate Options  
Under-Voltage Lock Out  
Reverse Current Protection  
APPLICATIONS  
•
•
•
•
•
•
•
Portable Industrial / Medical Equipment  
Portable Media Players  
The TPS22910 is available in an ultra-small, space-  
saving 4-pin CSP package and is characterized for  
operation over the free-air temperature range of  
–40°C to 85°C.  
Point Of Sales Terminals  
GPS Navigation Devices  
Digital Cameras  
Portable Instrumentation  
Smartphones / Wireless Handsets  
TYPICAL APPLICATION  
VIN  
VOUT  
Power  
Supply  
OFF  
CIN  
ON  
CL  
RL  
ON  
GND  
TPS22910  
GND  
Table 1. Feature List  
RISE TIME at 3.3V  
QUICK OUTPUT  
DISCHARGE(1)  
MAXIMUM OUTPUT  
CURRENT  
DEVICE  
rON (typ) at 3.3 V  
ENABLE  
(typ)  
TPS22910A  
TPS22910B(2)  
TPS22910C(2)  
TPS22910D(2)  
63 mΩ  
63 mΩ  
63 mΩ  
63 mΩ  
1 µs  
No  
No  
No  
No  
2-A  
2-A  
2-A  
2-A  
Active Low  
Active Low  
Active Low  
Active Low  
100 µs  
1000 µs  
4500 µs  
(1) This feature discharges the output of the switch to ground through an 150-Ω resistor, preventing the output from floating.  
(2) Contact local sales/distributor or factory for availability.  
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.  
Copyright © 2011–2012, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
 
 
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TPS22910A 替代型号

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