TPS2115PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS2115PWG4 is a dual-input automatic power-multiplexer IC from Texas Instruments supporting 1.5 V to 5.5 V rails at up to 1.25 A, housed in an 8-pin TSSOP for seamless supply-failover designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TPS2115PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Automatic priority-select logic switches between two input supplies from 1.5 V to 5.5 V without host firmware intervention, achieving sub-microsecond failover
- Handles up to 1.25 A continuous output current, covering most microprocessor and FPGA core rail budgets in handheld and portable equipment
- Adjustable switchover threshold allows designers to tune the transition hysteresis to match battery chemistry discharge curves and adapter voltage tolerance
- 8-pin TSSOP package with only 2.8 V minimum input enables switching supplies as low as 1.5 V when a higher-priority rail remains present
Applications
The TPS2115PWG4 is used in portable devices that switch between an AC adapter and a backup battery without interrupting the load, such as handheld industrial terminals, medical monitors, and laptop expansion cards. Its 1.5 V to 5.5 V operating range covers modern low-voltage processor rails in IoT gateways and wearables where both USB VBUS and a Li-Ion cell serve as alternate inputs. The device also fits redundant-supply designs in communications equipment that must transfer load from a failing regulator to a standby rail within microseconds to prevent system reset.
Specifications
| YTEOL | 0 |
| Additional Feature | CAN SWITCH A VOLTAGE AS LOW AS 1.5V AS LONG AS THERE IS A MIN OF 2.8V AT ONE OF THE I/P POWER PINS |
| Adjustable Threshold | YES |
| Analog IC - Other Type | LOAD SWITCH |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Channels | 2 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.09mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 2.8V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS2115PWG4:
Texas Instruments Adjustable, 2 Channel, PDSO8
Texas Instruments Adjustable, 2 Channel, PDSO8
Frequently Asked Questions
What output current rating does the TPS2115PWG4 support, and which processor rail profiles fit within that budget?
The TPS2115PWG4 is rated for 1.25 A continuous output current, sufficient for ARM Cortex-M microcontrollers consuming 200 mA, low-power FPGAs at 800 mA, and peripheral logic at 3.3 V. Designs that aggregate multiple loads should verify total rail current stays below 1.25 A including startup surge to avoid excessive switch resistance and voltage droop.
How quickly does the TPS2115PWG4 transfer load from a failing supply to the backup input?
The TPS2115PWG4 performs automatic switchover in under 1 µs once the priority input falls below the programmed threshold. This transition speed prevents the output voltage from drooping enough to reset most microcontrollers, which typically tolerate supply excursions of 10% for up to 100 µs before triggering a brown-out reset.
Can the TPS2115PWG4 handle a 1.8 V output rail for an LPDDR memory supply failover design?
Yes, the device switches supplies as low as 1.5 V at the output as long as one input remains at 2.8 V or higher to power the internal control circuits. A 1.8 V LPDDR supply can be protected by connecting the primary 1.8 V regulator to one channel and a 3.3 V always-on rail through an external LDO or resistive divider to the second channel.
How does the adjustable threshold feature of the TPS2115PWG4 benefit lithium-ion battery backup designs?
The threshold pin accepts a resistor-divider voltage to set the input switchover point anywhere in the valid range, allowing designers to match the Li-Ion end-of-discharge voltage of approximately 3.0 V to 3.2 V rather than using a fixed internal reference. This tuning prevents premature failover at partial battery charge, maximizing usable capacity before the TPS2115PWG4 hands off to the secondary supply.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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