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0.25A loading, 0.44A ILIMIT, 2.7-5.5V, 80mΩ USB power switch, active-low 8-SOIC -40 to 125
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TPS2045DG4 by Texas Instruments is a Power Management Circuit.
Power Management Circuits are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
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TPS2045DG4
Texas Instruments
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TPS2045DG4
Texas Instruments
0.25A loading, 0.44A ILIMIT, 2.7-5.5V, 80mΩ USB power switch, active-low 8-SOIC -40 to 125
|
Rohs Code | No | |
Part Life Cycle Code | Obsolete | |
Ihs Manufacturer | TEXAS INSTRUMENTS INC | |
Part Package Code | SOIC | |
Package Description | SOP, | |
Pin Count | 8 | |
Reach Compliance Code | compliant | |
ECCN Code | EAR99 | |
HTS Code | 8542.39.00.01 | |
Date Of Intro | 1999-04-08 | |
Samacsys Manufacturer | Texas Instruments | |
Adjustable Threshold | NO | |
Analog IC - Other Type | LOAD SWITCH | |
JESD-30 Code | R-PDSO-G8 | |
JESD-609 Code | e4 | |
Length | 4.9 mm | |
Moisture Sensitivity Level | 1 | |
Number of Channels | 1 | |
Number of Functions | 1 | |
Number of Terminals | 8 | |
Operating Temperature-Max | 85 °C | |
Operating Temperature-Min | -40 °C | |
Package Body Material | PLASTIC/EPOXY | |
Package Code | SOP | |
Package Shape | RECTANGULAR | |
Package Style | SMALL OUTLINE | |
Peak Reflow Temperature (Cel) | 260 | |
Qualification Status | Not Qualified | |
Seated Height-Max | 1.75 mm | |
Supply Voltage-Max (Vsup) | 5.5 V | |
Supply Voltage-Min (Vsup) | 2.7 V | |
Supply Voltage-Nom (Vsup) | 3.3 V | |
Surface Mount | YES | |
Temperature Grade | INDUSTRIAL | |
Terminal Finish | NICKEL PALLADIUM GOLD | |
Terminal Form | GULL WING | |
Terminal Pitch | 1.27 mm | |
Terminal Position | DUAL | |
Time@Peak Reflow Temperature-Max (s) | 30 | |
Width | 3.9 mm |
The maximum current limit for the TPS2045DG4 is 4A, but it's recommended to limit the current to 3.5A for continuous operation to ensure reliable performance and prevent overheating.
To calculate the power dissipation, use the formula: Pd = (Vin - Vout) x Iout x Rds(on). Rds(on) is the on-state resistance, which is typically around 0.04 ohms for the TPS2045DG4. Make sure to check the datasheet for the specific Rds(on) value and calculate the power dissipation accordingly.
The EN pin is used to enable or disable the TPS2045DG4. When the EN pin is high (logic level 1), the device is enabled, and when it's low (logic level 0), the device is disabled. You can use the EN pin to control the power supply to your load or to implement power-saving features in your design.
Choose an input capacitor with a voltage rating that exceeds the maximum input voltage, and a capacitance value that is at least 10uF. A low-ESR capacitor (e.g., ceramic or film capacitor) is recommended to minimize voltage ripple and ensure stable operation.
The minimum input voltage required for the TPS2045DG4 to operate is 2.7V. However, the device can operate down to 2.5V with reduced performance and efficiency.