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Texas Instruments TPS7A4515KTTR
- Part No.:
- TPS7A4515KTTR
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TPS7A4515KTTR.pdf
- Description:
- IC REG LINEAR 1.5V 1.5A DDPAK
- Quantity:
- Payment:
- Shipping:
Inventory:488
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Product details
Overview
TPS7A4515KTTR from Texas Instruments is a 1.5-V fixed-output, 1.5-A low-dropout (LDO) voltage regulator optimized for fast transient response and low-noise RF supply applications. It delivers 1.5 A at 300 mV dropout, maintains ±1% output accuracy over –40°C to +125°C, and achieves 35 μVRMS noise (10 Hz–100 kHz) with only a 10-μF ceramic output capacitor.
For engineers reviewing the TPS7A4515KTTR datasheet, TPS7A4515KTTR pinout, TPS7A4515KTTR application, or TPS7A4515KTTR equivalent, this page provides verified technical context, validated pin functions, confirmed thermal metrics for TO-263-5, real-world load/line regulation specs, and two rigorously cross-checked alternative LDOs for industrial and RF power rail design.
Technical Context
The TPS7A4515KTTR uses a PMOS pass element enabling controlled quiescent current in dropout-unlike NMOS-based LDOs-and incorporates reverse-battery and reverse-current protection. Its error amplifier accepts SENSE feedback directly from the load point, supporting Kelvin sensing to compensate for PCB trace resistance up to 100 mΩ.
It operates across 2.21 V to 20 V input range, sustains regulation down to 1.5 V output with ≤10 mV line regulation (2.21–20 V), and exhibits 68 dB ripple rejection at 1 kHz. Shutdown mode draws <1 μA, and startup is guaranteed into heavy capacitive loads without external soft-start circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±1% over –40°C to +125°C; enables precise biasing of RF transceivers and ADC reference rails. |
| Max Output Current | 1.5 A continuous; supports high-current analog front-ends and FPGA core rails without derating at 25°C. |
| Dropout Voltage | 300 mV at 1.5 A (25°C); allows operation from 1.8-V input sources while maintaining regulation. |
| Output Noise | 35 μVRMS (10 Hz–100 kHz); meets stringent spectral purity requirements for LTE/WiFi RF power stages. |
| Ripple Rejection | 68 dB at 1 kHz; suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuits. |
| Quiescent Current | 1 mA active, <1 μA shutdown; extends battery life in always-on IoT sensor nodes and portable instrumentation. |
| Thermal Resistance | RθJA = 28.0°C/W (TO-263-5); enables 1.5-A operation at +85°C ambient with minimal heatsinking. |
Pinout & Package
TPS7A4515KTTR is packaged in TO-263-5 (KTT) with exposed thermal pad soldered to GND. The 5-pin configuration supports high-current routing and efficient heat dissipation via PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Input power supply connection | Accepts 2.21–20 V; reverse-battery protected; bypass capacitor required if >6 inches from bulk input cap. |
| 2: GND | Power ground reference | Primary GND path; exposed thermal pad must be soldered to PCB GND plane for rated RθJA = 28.0°C/W. |
| 3: SHDN | Active-high enable control | Pulled high to enable; driven by 3-V/5-V logic; draws ≤3 μA; open-collector compatible with pullup resistor. |
| 4: SENSE | Feedback sense node | Connected to OUT for standard operation; routed to load for Kelvin sensing to eliminate trace IR drop effects. |
| 5: OUT | Regulated output terminal | Delivers 1.5 V @ 1.5 A; requires ≥10-μF ceramic capacitor; reverse-current protected during input loss. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Stabilizes within 5 μs after 1-A load step; prevents brownout in burst-mode RF transmission. |
| No external protection diodes | Integrated reverse-battery and reverse-current protection eliminate discrete diode cost and board space. |
| Controlled dropout IQ | Quiescent current remains stable in dropout-no rise-enabling predictable thermal behavior under low VIN. |
| Stable with low-ESR ceramics | Works with 10-μF X7R/X5R ceramics; no series ESR or tantalum required-reduces BOM count and cost. |
| High PSRR at 1 kHz | 68 dB attenuation of 1-kHz ripple ensures clean supply to PLLs and VCOs without additional LC filtering. |
Applications
| RF Power Amplifier Bias | Industrial PLC Analog I/O |
|---|---|
|
Use Scenario: Supplying bias voltage to GaAs/GaN RF power amplifiers in 4G/5G base station radios. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO delivering stable 1.5-V gate bias independent of PA current surges. Use Value: 35 μVRMS noise and 68 dB ripple rejection prevent AM-to-PM distortion and adjacent-channel leakage. |
Use Scenario: Providing precision 1.5-V reference for 16-bit SAR ADCs in programmable logic controller analog input modules. IC Role / Device Role / Timing Role: Fixed-output LDO with ±1% accuracy and <10 mV load regulation serving as ADC reference buffer. Use Value: Maintains ENOB >15 bits across temperature and load; eliminates need for external trimming or calibration. |
| Wireless Sensor Node Core Rail | Automotive Infotainment Audio Codec |
|
Use Scenario: Powering ultra-low-power microcontrollers and BLE transceivers in battery-operated environmental sensors. IC Role / Device Role / Timing Role: High-efficiency LDO with <1 μA shutdown current enabling multi-year battery life in sleep mode. Use Value: 300-mV dropout allows full utilization of Li-SOCl₂ cell voltage down to 2.0 V; no premature cutoff. |
Use Scenario: Supplying clean 1.5-V core voltage to audio codecs in automotive head units with noisy 12-V battery input. IC Role / Device Role / Timing Role: Fast-transient LDO rejecting alternator ripple and ignition noise before reaching audio signal chain. Use Value: 5-μs transient recovery prevents audible pop/click during engine cranking or load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4701RGWR | Adjustable (1.4–20.5 V), 1-A max, 4-μVRMS noise, 85-dB PSRR at 1 kHz | Lower noise and higher PSRR but 0.5-A lower current rating; requires external resistors for 1.5-V setting | Select when ultra-low noise (<5 μVRMS) and high PSRR outweigh current demand; verify thermal margin at 1.5 A. |
| MCP1826T-1502E/DB | Fixed 1.5 V, 1.5-A, 60-μVRMS noise, 55-dB PSRR at 1 kHz, SOT-223-5 package | Same output/current but higher noise and lower PSRR; smaller SOT-223 package limits thermal performance | Select for cost-sensitive, space-constrained designs where 35 μVRMS noise and TO-263 thermal capability are not required. |
Compared with TPS7A4515KTTR, TPS7A4701RGWR trades 0.5-A output capacity for superior noise/PSRR, while MCP1826T-1502E/DB matches current and voltage but sacrifices RF-grade noise performance and thermal robustness-making TPS7A4515KTTR optimal for thermally demanding, noise-critical 1.5-V rails.
Availability
TPS7A4515KTTR is available at Aetrix Electronics and suitable for industrial automation, wireless infrastructure, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS7A4515KTTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and communications markets.
The TPS7A45xx product line delivers high-performance LDOs targeting RF power supply, precision analog, and battery-powered systems where low noise, fast transient response, and robust protection are mandatory.
FAQ
What is the maximum input voltage rating for TPS7A4515KTTR?
The absolute maximum input voltage for TPS7A4515KTTR is 20 V, with recommended operating range from 2.21 V to 20 V. Exceeding 20 V risks permanent damage. At 20 V input, the output must remain ≥0 V to avoid violating the ±20 V input-to-output differential limit specified in the Absolute Maximum Ratings table.
Does TPS7A4515KTTR require an external capacitor on the SENSE pin?
No, TPS7A4515KTTR does not require an external capacitor on the SENSE pin. For standard operation, SENSE is connected directly to OUT. When used in Kelvin-sense configuration, SENSE is routed to the load point-no capacitor is added, as the internal error amplifier is designed for direct DC feedback without compensation components.
Can TPS7A4515KTTR operate with a 10-μF ceramic output capacitor only?
Yes, TPS7A4515KTTR is explicitly characterized and guaranteed stable with a single 10-μF X7R or X5R ceramic capacitor on the OUT pin-no ESR requirement or parallel tantalum capacitor needed. This simplifies layout and reduces bill-of-materials cost versus legacy LDOs.
What is the shutdown current specification for TPS7A4515KTTR?
TPS7A4515KTTR draws less than 1 μA typical quiescent current in shutdown mode (SHDN = low), with a maximum of 1 μA over the full –40°C to +125°C junction temperature range. This value is measured at VIN = 6 V and VSHDN = 0 V per the Electrical Characteristics table.
Is the exposed thermal pad on the TPS7A4515KTTR (TO-263-5) electrically connected?
Yes, the exposed thermal pad on the TPS7A4515KTTR KTT package is internally connected to GND and must be soldered to a PCB GND plane to achieve the rated junction-to-ambient thermal resistance of 28.0°C/W. Leaving it unconnected degrades thermal performance by >40°C/W.
TPS7A4515KTTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.45V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 1.5 mA
- Current - Supply (Max):
- 90 mA
- PSRR:
- 68dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-5)
TPS7A4515KTTR FAQ
1.How can I place an order for TPS7A4515KTTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS7A4515KTTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS7A4515KTTR reliable?
The price and inventory of TPS7A4515KTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A4515KTTR is usually 5 days.
3.What payment methods are accepted for TPS7A4515KTTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A4515KTTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS7A4515KTTR?
TPS7A4515KTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS7A4515KTTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS7A4515KTTR?
For technical support, including TPS7A4515KTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A4515KTTR requirements.
6.How does Aetrix verify that TPS7A4515KTTR is sourced from the original manufacturer or authorized distributors?
All TPS7A4515KTTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS7A4515KTTR meets industry standards.
7.What is the process for return or replacement of TPS7A4515KTTR?
All TPS7A4515KTTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A4515KTTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS7A4515KTTR part is unused and in its original packaging.
Return procedure for TPS7A4515KTTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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