5.5-V, 0.04-A, 500-mΩ, load switch with current limit and active high enable
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range: 1.62 V to 5.5 V
- Low ON resistance
- rON = 0.4 Ω at VIN = 5.5 V
- rON = 0.5 Ω at VIN = 3.3 V
- rON = 0.6 Ω at VIN = 2.5 V
- rON = 0.8 Ω at VIN = 1.8 V
- Minimum Current Limit: 40 mA or 100 mA
- Undervoltage Lockout (UVLO)
- Thermal Shutdown
- Shutdown Current < 1 µA
- Fast Current Limit Response Time
- Fault Blanking
- Auto Restart
- 1.8-V Compatible Control Input Thresholds
- ESD Performance Tested Per JESD 22
- 4000-V Human-Body Model
(A114-B, Class II) - 1000-V Charged-Device Model (C101)
- 4000-V Human-Body Model
- Tiny SC-70 (DCK) Package
- UL Recognized Component (UL File 169910)
- Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC,
Test Program 2 with CB Report
Description
The TPS22941/2/3/4/5 load switches provide protection to systems and loads in high-current conditions. The devices contain a 0.4-Ω current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. Current is prevented from flowing when the MOSFET is off. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS22941/2/3/4/5 includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.
These devices provide an integrated, robust solution to provide current limiting the output current to a safe level by switching into a constant-current mode when the ouptut load exceeds the current-limit threshold. The OC logic output asserts low during overcurrent, undervoltage, or overtemperature conditions. These additional features make the TPS22941/2/3/4/5 an ideal solution for applications where current limiting is necessary.
This family of devices are available in a SC70-5 (DCK) package. It is characterized for operation over the free-air temperature range of –40°C to 85°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS2294x Low-input-voltage Current-limited Load Switches With Shut Off And Auto-Restart Feature datasheet (Rev. D) | Jul. 10, 2014 |
Application note | Load Switch Thermal Considerations (Rev. A) | Oct. 11, 2018 | |
Application note | Basics of Load Switches (Rev. A) | Sep. 05, 2018 | |
Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
Technical articles | How can a load switch extend your device’s battery life? | Mar. 20, 2018 | |
Technical articles | How and why you should use load switches for power sequencing | Feb. 06, 2018 | |
Technical articles | How to use load switches and eFuses in your set-top box design | Nov. 23, 2017 | |
Application note | Selecting a Load Switch to Replace a Discrete Solution | Apr. 30, 2017 | |
Application note | Timing of Load Switches | Apr. 27, 2017 | |
Technical articles | Don’t leave it floating! Power off your outputs with quick output discharge | Dec. 09, 2016 | |
Application note | Managing Inrush Current (Rev. A) | May 28, 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS22945EVM-082 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS22945 load switch. The VIN and VOUT connections to the device and the PCB layout routing provide a low resistance pathway into and out of the device under test. Test point connections allow the (...)
Features
- Input voltage range: 1.62 V to 5.5 V
- Access to the VIN, VOUT, GND, ON and OC pins
- On board CIN and COUT capacitors
- VIN and VOUT sense pins to measure the voltage drop from VIN to VOUT and calculate the resistance
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SC70 (DCK) | 5 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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