TPS77628PWPG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS77628PWPG4 is a fixed 2.8 V low-dropout linear voltage regulator capable of delivering 500 mA output current with a maximum dropout voltage of 410 mV and input range of 2.7 V to 10 V. Housed in a 20-pin HTSSOP package, it provides ±2% output accuracy for powering RF modules, DSPs, and portable electronics requiring a stable 2.8 V rail.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TPS77628PWPG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.8 V output with ±2% accuracy for precision power rails
- 500 mA maximum output current with 410 mV maximum dropout voltage
- Wide 2.7 V to 10 V input voltage range for multi-source compatibility
- 20-pin HTSSOP package enabling compact PCB footprint with thermal pad
- Low quiescent current for extended battery life in portable designs
- Enable pin for controlled power sequencing in multi-rail systems
Applications
TPS77628PWPG4 is used to power RF transceivers, GPS modules, and baseband processors in portable consumer electronics and IoT devices where a stable 2.8 V supply is required from a lithium-ion battery or 5 V regulated bus. It is also employed in industrial handheld instruments and medical sensor nodes that demand tight output voltage accuracy within ±2% to meet ADC reference and sensor bias requirements. The wide input voltage range and low dropout make it suitable for post-regulator stages following switching converters in multirail power architectures.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.41V |
| Dropout Voltage1-Nom | 0.285V |
| Input Voltage Absolute-Max | 13.5V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.002044% |
| Load Regulation-Max | 0.003% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 2.856V |
| Output Voltage1-Min | 2.744V |
| Output Voltage1-Nom | 2.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | PMOS |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2% |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much headroom does TPS77628PWPG4 need above its 2.8 V output to stay in regulation?
TPS77628PWPG4 requires a minimum 285 mV of dropout at nominal conditions, rising to 410 mV under worst-case load and temperature. This means the input voltage must be at least 3.21 V to maintain the 2.8 V output at full 500 mA load. On a 3.3 V rail, this leaves just 90 mV margin above the nominal dropout, so designers should verify input voltage under transient conditions.
Can TPS77628PWPG4 power an RF front-end module that draws up to 450 mA during transmission bursts?
Yes, TPS77628PWPG4 is rated for 500 mA continuous output, providing 50 mA headroom above a 450 mA transmit burst. The ±2% output accuracy ensures the 2.8 V rail stays within 56 mV of nominal during peak current events, which is within the typical supply tolerance of most RF front-end modules requiring a 2.8 V ± 100 mV bias. Adequate input bypass capacitance of at least 1 µF is recommended to handle transient load steps.
What input voltage sources are compatible with TPS77628PWPG4 in a portable design?
TPS77628PWPG4 accepts input voltages from 2.7 V to 10 V, making it compatible with single-cell lithium-ion batteries (2.7 V to 4.2 V), dual-cell NiMH packs (around 2.4 V to 3.0 V boosted), 5 V USB power, and regulated 9 V adapter outputs. This range covers most portable and bench-powered scenarios, eliminating the need for a separate pre-regulator in systems with variable DC input sources.
How does the HTSSOP-20 package of TPS77628PWPG4 help with thermal management at full load?
The 20-pin HTSSOP package includes an exposed thermal pad on the bottom that reduces junction-to-board thermal resistance to approximately 30°C/W, compared to over 50°C/W for a standard SOIC without a pad. At 500 mA output with a 2 V input-output differential (1 W dissipation), the junction temperature rise is about 30°C above the board temperature, keeping the device well within its 125°C maximum junction rating at a 75°C ambient.
In a multi-rail power sequence design, how can TPS77628PWPG4's enable pin control the 2.8 V turn-on order?
TPS77628PWPG4 provides a dedicated enable pin that goes active high at approximately 1.5 V logic threshold, allowing a microcontroller or sequencing IC to control when the 2.8 V output powers up relative to other rails. Connecting this enable signal to the power-good output of a prior-sequenced 1.8 V regulator ensures the 2.8 V rail rises only after the core supply is stable, preventing latch-up in FPGAs and SoCs that require strict 100 ms ramp sequencing between power domains.
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