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Texas Instruments TPS75615KTTT
- Part No.:
- TPS75615KTTT
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TPS75615KTTT.pdf
- Description:
- IC REG LIN 1.5V 5A DDPAK/TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,221
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Product details
Overview
TPS75615KTTT from Texas Instruments is a 5-A, 1.5-V fixed-output low-dropout (LDO) voltage regulator in a TO-263 (KTT) surface-mount package. It delivers up to 5 A with a typical dropout voltage of 250 mV at full load, quiescent current of 125 µA, and ±3% output voltage tolerance over line, load, and temperature (–40°C to +125°C). It is used in high-current point-of-load regulation for FPGA core supplies and DSP power rails.
For engineers reviewing the TPS75615KTTT datasheet, TPS75615KTTT pinout, TPS75615KTTT application, or TPS75615KTTT equivalent, key selection criteria include dropout performance at 5 A, thermal shutdown behavior at 150°C, EN pin logic thresholds (2 V high / 0.7 V low), output capacitor stability requirements (≥47 µF, ≥200 mΩ ESR), and TO-263 thermal resistance (RθJA = 38.7°C/W).
Technical Context
The TPS75615KTTT uses a PMOS pass element enabling low dropout and load-independent quiescent current. Its bandgap reference is trimmed to 1.22 V, and internal feedback is hardwired for 1.5-V output - eliminating external resistor networks required by the adjustable TPS75601 variant.
It integrates thermal shutdown (trip at 150°C, resume at ~130°C), current limiting (~10 A peak), undervoltage lockout (UVLO threshold 2.2–2.75 V), and fast transient response optimized for large-slew load steps (e.g., 1.25 A/µs). The FB/NC pin is unconnected in fixed-output versions, confirming no external feedback path is used.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 1.5 V ±3% over –40°C to +125°C, line, and load - ensures stable core supply for 1.5-V logic families. |
| Max output current | 5 A continuous - supports high-power digital ICs without external current boosting. |
| Dropout voltage | 250 mV typical at 5 A - enables 1.5-V output from as low as 1.75-V input (e.g., LiFePO₄ battery discharge tail). |
| Quiescent current | 125 µA at full load, <1 µA in shutdown - extends battery life in always-on systems. |
| Enable threshold | EN high ≥2 V, low ≤0.7 V - compatible with 1.8-V and 3.3-V GPIO without level shifting. |
| Thermal shutdown | Activates at 150°C junction, auto-resumes at ~130°C - protects against sustained overload or poor heatsinking. |
| PSRR | 60 dB at 100 Hz (1.5-V output) - suppresses ripple from upstream switching converters feeding the LDO. |
Pinout & Package
TPS75615KTTT is housed in a 5-pin TO-263 (KTT) thermally enhanced surface-mount package with exposed thermal pad. Pin 1 is EN, Pin 2 is IN, Pin 3 is GND, Pin 4 is OUTPUT, and Pin 5 is FB/NC (no connection for fixed 1.5-V version).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable control input | Active-high logic: >2 V enables regulation; <0.7 V forces shutdown (<1 µA IQ). |
| 2 - IN | Input voltage supply | Accepts 2.8 V to 5.5 V; minimum VI = VO + 1 V = 2.5 V for 1.5-V output under full load. |
| 3 - GND | Regulator ground reference | Must be low-impedance connection to system ground plane; shares return path with output capacitor. |
| 4 - OUTPUT | Regulated output | Delivers 1.5 V ±3% at up to 5 A; requires ≥47 µF output capacitor with ≥200 mΩ ESR for stability. |
| 5 - FB/NC | Feedback input / No connect | Internally tied to reference for fixed 1.5-V operation; left floating - no external components needed. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS pass transistor | Enables 250-mV dropout at 5 A and load-independent 125-µA quiescent current - critical for battery runtime. |
| Fast transient response | Stabilizes within microseconds after 5-A load step (di/dt = 1.25 A/µs); ΔVO < ±50 mV with 100-µF output cap - maintains digital IC timing margins. |
| Integrated protection | Current limit (~10 A), thermal shutdown (150°C), and UVLO (2.2–2.75 V) - eliminates need for external fault management circuitry. |
| TO-263 thermal performance | RθJA = 38.7°C/W (JEDEC 2S2P board, no heatsink) - enables 2.4 W dissipation at 55°C ambient before reaching 125°C TJ limit. |
| Low-noise output | 35 µVrms noise (300 Hz–50 kHz) - suitable for noise-sensitive analog peripherals powered from same rail. |
Applications
| FPGA Core Power | DSP Processor Supply |
|---|---|
|
Use Scenario: Powering 1.5-V core voltage of Xilinx Spartan-6 or Intel Cyclone IV FPGAs during dynamic configuration and high-speed I/O activity. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, low-noise 1.5-V rail with fast transient recovery to prevent setup/hold violations. Use Value: 5-A capability meets peak current demands; 250-mV dropout allows use with marginally regulated intermediate bus voltages. |
Use Scenario: Supplying TI C6000-series DSP cores requiring tightly regulated 1.5-V at up to 4.5 A during FFT-intensive processing. IC Role / Device Role / Timing Role: High-current LDO providing low-ripple, low-noise bias independent of upstream DC/DC converter switching noise. Use Value: 60-dB PSRR at 100 Hz suppresses switching ripple; ±3% tolerance ensures compliance with DSP core voltage spec. |
| Industrial PLC I/O Module | Medical Imaging Sensor Bias |
|
Use Scenario: Regulating 1.5-V supply for isolated ADC drivers and precision op-amps in programmable logic controller analog input modules. IC Role / Device Role / Timing Role: Stable, low-drift voltage source referenced to system ground, immune to backfeed from downstream circuits. Use Value: Thermal shutdown prevents field failure under sustained overload; EN pin enables synchronized power sequencing with microcontroller. |
Use Scenario: Biasing low-noise CMOS image sensor arrays in portable ultrasound probes where EMI and thermal rise are strictly constrained. IC Role / Device Role / Timing Role: Ultra-low-noise, thermally robust LDO supplying analog front-end circuitry with minimal self-heating. Use Value: 35 µVrms output noise preserves SNR; TO-263 thermal pad minimizes junction-to-board resistance for compact layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS75715KTTT | Same 1.5-V output, 5-A rating, TO-263 package, but features power-good (PG) output and lower 80-µA quiescent current. | Required when system-level power sequencing or fault reporting is needed; PG signal asserts after output reaches regulation. | Select TPS75715KTTT if power-good monitoring is mandatory; otherwise TPS75615KTTT offers simpler enable-only control. |
| LP38798SD-1.5/NOPB | 1.5-V, 5-A LDO in 8-pin SO PowerPAD; dropout 220 mV at 5 A; quiescent current 100 µA; no EN pin - always-on. | Suitable for space-constrained PCBs needing ultra-low dropout and no enable control; lacks shutdown mode. | Choose LP38798SD-1.5/NOPB only if EN functionality is unnecessary and footprint size is prioritized over control flexibility. |
Compared with TPS75615KTTT, TPS75715KTTT adds power-good signaling at slightly lower quiescent current but same thermal and electrical specs, while LP38798SD-1.5/NOPB trades enable control for smaller footprint and marginally better dropout - making each suitable for distinct system architecture needs.
Availability
TPS75615KTTT is available at Aetrix Electronics and suitable for FPGA core power, DSP processor supply, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS75615KTTT 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 specializing in analog and embedded processing technologies, with decades of expertise in power management IC design and manufacturing.
The TPS756xx family was engineered for high-current, low-noise point-of-load regulation in demanding digital systems - emphasizing fast transient response, thermal resilience, and compatibility with modern low-voltage logic families.
FAQ
What is the maximum input voltage for TPS75615KTTT?
The absolute maximum input voltage for TPS75615KTTT is 6 V, but the recommended operating range is 2.8 V to 5.5 V. For reliable 1.5-V output at 5 A, the minimum input must be at least 2.5 V (VO + 1 V) per datasheet guidance; exceeding 5.5 V risks permanent damage.
Does TPS75615KTTT require an external feedback resistor network?
No. TPS75615KTTT is a fixed 1.5-V output variant - its feedback is internally configured. Pin 5 (FB/NC) is not connected and must remain unpopulated; no external resistors are needed or permitted for output voltage setting.
What output capacitor is required for stable operation of TPS75615KTTT?
TPS75615KTTT requires a minimum 47-µF output capacitor with ≥200 mΩ ESR. Solid tantalum or aluminum electrolytic capacitors meeting these values ensure loop stability; ceramic capacitors alone are insufficient due to near-zero ESR and risk of oscillation.
How does the enable (EN) pin function on TPS75615KTTT?
The EN pin on TPS75615KTTT is active-high: applying ≥2 V enables regulation, while ≤0.7 V places the device in shutdown mode drawing <1 µA. A pull-up resistor to VIN is recommended if EN is driven by an open-drain controller output.
Can TPS75615KTTT be used in automotive applications?
TPS75615KTTT is rated for –40°C to +125°C operating junction temperature and qualified per JEDEC standards, but it is not AEC-Q100 qualified. For automotive applications requiring qualification, consult TI's automotive-grade alternatives such as the TPS7H3301-SP or LP8733xx series.
TPS75615KTTT 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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 5A
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-5)
TPS75615KTTT FAQ
1.How can I place an order for TPS75615KTTT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS75615KTTT 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 TPS75615KTTT reliable?
The price and inventory of TPS75615KTTT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS75615KTTT is usually 5 days.
3.What payment methods are accepted for TPS75615KTTT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS75615KTTT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS75615KTTT?
TPS75615KTTT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS75615KTTT 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 TPS75615KTTT?
For technical support, including TPS75615KTTT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS75615KTTT requirements.
6.How does Aetrix verify that TPS75615KTTT is sourced from the original manufacturer or authorized distributors?
All TPS75615KTTT 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 TPS75615KTTT meets industry standards.
7.What is the process for return or replacement of TPS75615KTTT?
All TPS75615KTTT units undergo pre-shipment inspection (PSI). If there is an issue with TPS75615KTTT, 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 TPS75615KTTT part is unused and in its original packaging.
Return procedure for TPS75615KTTT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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