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Texas Instruments TPS72525DCQR
- Part No.:
- TPS72525DCQR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-223-6
- Datasheet:
-
TPS72525DCQR.pdf
- Description:
- IC REG LINEAR 2.5V 1A SOT223-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,265
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Product details
Overview
TPS72525DCQR from Texas Instruments is a 1-A, 2.5-V fixed-output low-dropout (LDO) linear regulator with integrated supervisor and active-low RESET output. It operates from 1.8 V to 6 V input, delivers ≤2.55 V output at ±2% tolerance over line/load/temperature (−40°C to 125°C), and maintains 170 mV dropout at 1 A - enabling efficient power delivery in space-constrained DSP/FPGA core supplies.
For engineers reviewing the TPS72525DCQR datasheet, TPS72525DCQR pinout, TPS72525DCQR application, or TPS72525DCQR equivalent, key selection criteria include its no-capacitor-stable architecture, 210 µA ground current at full load, 50-ms RESET delay, and SOT223-5 package thermal performance under 1-A continuous operation.
Technical Context
The TPS72525DCQR integrates a precision bandgap reference (1.220 V typ), current-limit and thermal protection circuitry, and a dedicated open-drain RESET output with 93%VO trip threshold and 10 mV hysteresis. Its internal UVLO activates below 1.45 V input and includes 10 µs deglitching.
This device uses a PMOS pass element enabling ultra-low dropout and reverse-current protection via an integrated back diode. Unlike NMOS-based LDOs, it requires no minimum load and remains stable with any output capacitor value or type - including zero capacitance - while achieving 150 µVRMS output noise with a 10-µF ceramic capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 2.5 V ±2% over −40°C to 125°C, 0–1 A load - ensures reliable core logic supply for FPGAs operating across industrial temperature range. |
| Dropout voltage | 170 mV at 1 A (TJ = 25°C) - enables operation from 2.67 V input when delivering 2.5 V, critical for battery-powered systems near end-of-discharge. |
| Ground current | 210 µA at 1 A load - minimizes quiescent power loss in always-on subsystems without sacrificing full-load efficiency. |
| RESET delay | 50 ms typical - provides sufficient timing margin to prevent spurious resets during power-up or brownout recovery in microprocessor systems. |
| Input voltage range | 1.8 V to 6 V - supports direct regulation from single-cell Li-ion (3.0–4.2 V), USB 5 V rails, or post-boost converter outputs. |
| Output noise | 150 µVRMS (200 Hz–100 kHz, 10 µF CO) - meets low-noise requirements for analog-sensitive circuits like ADC references or RF bias rails. |
| PSRR | 60 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters, simplifying power integrity design in mixed-signal boards. |
Pinout & Package
SOT223-5 surface-mount package with exposed thermal pad (tab connected to GND); footprint compatible with JEDEC MO-178AA standard; thermal resistance RθJA = 53°C/W on low-K board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output | Delivers stable 2.5 V to load; requires local 1-µF ceramic bypass capacitor at pin for stability. |
| 2 (IN) | Input supply | Accepts 1.8–6 V; must be decoupled with ≥1-µF ceramic capacitor placed adjacent to pin. |
| 3 (GND) | Power ground | Primary return path for load current; connects to exposed thermal tab - must be soldered to PCB ground plane. |
| 4 (ENABLE) | Active-high enable | Drives internal pass transistor ON when >1.3 V; pulls to GND to disable regulator and reduce standby current to <1 µA. |
| 5 (RESET/FB) | Open-drain RESET output | Asserts active-low signal when VOUT drops <7% below nominal; requires external pullup resistor to system rail (e.g., 10 kΩ to 3.3 V). |
Key Features
| Feature | Design Value |
|---|---|
| No-capacitor stability | Operates stably with zero output capacitance - eliminates mandatory bulk capacitor, reducing BOM count and board area in size-critical designs. |
| Integrated supervisor | Monitors output voltage continuously and asserts RESET within 50 ms of 7% undervoltage - replaces discrete reset IC and saves PCB real estate. |
| Ultra-low ground current | 210 µA at full 1-A load - achieves >99.9% efficiency at light loads and extends battery runtime in portable applications. |
| Reverse-current protection | Internal back diode prevents current flow from OUT to IN during power-down - avoids cross-regulation and protects upstream sources. |
| Thermal shutdown | Activates at TJ > 165°C and auto-recovers at TJ < 145°C - prevents permanent damage during sustained overload or inadequate heatsinking. |
Applications
| PCI Cards | Modem Banks |
|---|---|
Use Scenario: Powering 3.3-V and 2.5-V I/O banks and core logic on PCIe add-in cards with tight thermal envelopes. IC Role / Device Role / Timing Role: Primary 2.5-V LDO supplying FPGA transceiver banks and SerDes termination. Use Value: 170-mV dropout enables use of 2.7-V auxiliary rail, reducing heat generation versus higher-dropout alternatives. |
Use Scenario: Providing clean, regulated 2.5-V supply to analog front-end (AFE) and digital signal processor (DSP) in DSL/cable modems. IC Role / Device Role / Timing Role: Low-noise post-regulator downstream of buck converter, powering sensitive analog sections. Use Value: 150-µVRMS output noise and 60-dB PSRR suppress switching artifacts from upstream DC/DC, preserving SNR. |
| Telecom Boards | DSP, FPGA, and Microprocessor Power Supplies |
Use Scenario: Delivering 2.5-V core voltage to line-card processors and packet-forwarding ASICs in carrier-grade access equipment. IC Role / Device Role / Timing Role: Supervised power rail with guaranteed RESET assertion during brownout events per GR-63-CORE. Use Value: Integrated 50-ms RESET delay satisfies telecom watchdog timing requirements without external RC network. |
Use Scenario: Generating 2.5-V core supply for Xilinx Spartan-7 FPGA or TI C66x DSP requiring precise voltage and fast transient response. IC Role / Device Role / Timing Role: High-current LDO with ENABLE control for sequenced power-up and thermal-aware throttling. Use Value: 1-A rating and thermal shutdown allow safe operation under burst-mode workloads without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700RGWR | 20-V max input, 1-A, adjustable output (1.4–20.5 V), 25-µVRMS noise, but no integrated RESET. | Lacks supervisor function; requires external reset IC for power-good monitoring. | Choose when ultra-low noise and wide input range outweigh need for built-in RESET. |
| TLV75525PDQNR | 500-mA output, 2.5-V fixed, 175-mV dropout, 65-µA IQ, no RESET, SOT-23-5 package. | Lower current rating and no supervision; smaller footprint but limited to sub-500-mA loads. | Choose for cost-sensitive, space-constrained, low-power applications where RESET is handled elsewhere. |
Compared with TPS7A4700RGWR and TLV75525PDQNR, the TPS72525DCQR uniquely combines 1-A output, integrated 50-ms RESET, and no-capacitor stability in SOT223-5 - making it optimal for supervised high-current FPGA/DSP core rails where board area and component count are constrained.
Availability
TPS72525DCQR is available at Aetrix Electronics and suitable for PCI card power delivery, modem bank analog supplies, and telecom board core regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS72525DCQR 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, embedded processing, and connectivity technologies with over 50 years of power management innovation.
The TPS725xx family was designed specifically for high-current, low-input-voltage applications in DSP, FPGA, and microcontroller systems - emphasizing dropout minimization, supervisor integration, and capacitor-free stability.
FAQ
What is the maximum input voltage rating for the TPS72525DCQR?
The absolute maximum input voltage for the TPS72525DCQR is 7 V, but the recommended operating range is 1.8 V to 6 V. Exceeding 6 V risks violating safe operating area limits and may trigger overvoltage protection or cause permanent damage. The 1.8-V minimum enables compatibility with single-cell Li-ion batteries down to 2.5 V after regulation margin.
Does the TPS72525DCQR require an output capacitor to maintain stability?
No - the TPS72525DCQR is explicitly designed to be stable with zero output capacitance, per TI's datasheet Section 8.3. While adding a 10-µF ceramic capacitor improves transient response and reduces output noise to 150 µVRMS, it is not required for loop stability, simplifying layout in space-constrained applications.
How does the RESET function operate on the TPS72525DCQR?
The RESET pin (Pin 5) is an open-drain output that asserts active-low when the regulated output falls below 93% of 2.5 V (i.e., <2.325 V). It features a 50-ms internal delay and 10-mV hysteresis to prevent chatter during marginal conditions. An external pullup resistor (e.g., 10 kΩ to 3.3 V) is mandatory to generate a valid logic-level signal for microcontroller reset inputs.
What thermal considerations apply to the TPS72525DCQR in SOT223-5 package?
In SOT223-5, the TPS72525DCQR has RθJA = 53°C/W on JEDEC low-K board. At 1 A with 3.3 V input → 2.5 V output, power dissipation is 800 mW; junction temperature rise is ~42°C above ambient. To stay within 125°C max TJ at 85°C ambient, ≥0.55 in² copper pour under the thermal tab is required - verified in TI's Figure 24.
Can the TPS72525DCQR be used in battery-powered applications with deep discharge profiles?
Yes - the TPS72525DCQR supports input voltages as low as 1.8 V, allowing operation directly from partially discharged Li-ion cells (down to ~2.7 V after dropout margin). Its <1 µA standby current during ENABLE disable and 210 µA full-load ground current maximize usable battery capacity in portable, always-on devices.
TPS72525DCQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-223-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.28V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 225 µA
- Current - Supply (Max):
- 325 µA
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable, Reset
- 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:
- SOT-223-6
TPS72525DCQR FAQ
1.How can I place an order for TPS72525DCQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS72525DCQR 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 TPS72525DCQR reliable?
The price and inventory of TPS72525DCQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS72525DCQR is usually 5 days.
3.What payment methods are accepted for TPS72525DCQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS72525DCQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS72525DCQR?
TPS72525DCQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS72525DCQR 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 TPS72525DCQR?
For technical support, including TPS72525DCQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS72525DCQR requirements.
6.How does Aetrix verify that TPS72525DCQR is sourced from the original manufacturer or authorized distributors?
All TPS72525DCQR 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 TPS72525DCQR meets industry standards.
7.What is the process for return or replacement of TPS72525DCQR?
All TPS72525DCQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS72525DCQR, 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 TPS72525DCQR part is unused and in its original packaging.
Return procedure for TPS72525DCQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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