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Renesas UPC2925BT-AZ
- Part No.:
- UPC2925BT-AZ
- Manufacturer:
- Renesas
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
UPC2925BT-AZ.pdf
- Description:
- IC REG LINEAR 1A SC63
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
UPC2925BT-AZ from Renesas Electronics is a three-terminal low dropout linear voltage regulator delivering a fixed 2.5 V output at up to 1 A, using a PNP output stage to achieve 0.7 V typical dropout at full load. It integrates on-chip thermal shutdown, over-current limiting, safe operating area (SOA) protection, and saturation protection for low-input-voltage startup-designed for stable local regulation in embedded power rails of office equipment and industrial controllers.
For engineers reviewing the UPC2925BT-AZ datasheet, UPC2925BT-AZ pinout, UPC2925BT-AZ application, or UPC2925BT-AZ equivalent, key selection criteria include its 2.5 V ±2% output accuracy, 0.7 V dropout at 1 A, 40 µVr.m.s. output noise, 45–60 dB ripple rejection (120 Hz), and SC-63 (MP-3Z) surface-mount package with exposed thermal pad.
Technical Context
The UPC2925BT-AZ employs a PNP pass transistor architecture enabling low dropout operation without requiring a minimum load or external compensation. Its internal error amplifier drives the PNP output stage through a dedicated drive circuit, with independent start-up logic that activates saturation protection when input voltage falls near the regulated output.
Thermal management relies on junction-to-case thermal resistance of 12.5°C/W and junction-to-ambient of 125°C/W in the SC-63 package. Protection functions operate autonomously: over-current limiting engages before SOA violation, thermal shutdown triggers at 150°C junction temperature, and saturation protection reduces quiescent current rise during undervoltage startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±2% - ensures stable logic supply for 2.5 V I/O domains without external feedback. |
| Dropout Voltage | 0.7 V TYP. at 1 A - enables regulation from 3.2 V input, minimizing power loss in battery-backed or low-headroom systems. |
| Output Current | 1 A continuous - supports single-rail powering of microcontrollers, sensors, or interface ICs without external pass devices. |
| Ripple Rejection | 45–60 dB at 120 Hz - suppresses line-frequency noise from unregulated DC supplies or switching pre-regulators. |
| Output Noise | 40 µVr.m.s. (10 Hz–100 kHz) - preserves signal integrity in analog front-ends and precision ADC references. |
| Quiescent Current | 2–60 mA (load-dependent) - scales with output current, reducing idle power in always-on subsystems. |
| Thermal Shutdown | 150°C junction - latches off until cooldown, preventing permanent damage during sustained overload or poor heatsinking. |
Pinout & Package
UPC2925BT-AZ uses the SC-63 (MP-3Z) surface-mount package: 4-pin, 6.5 mm × 4.4 mm body with exposed thermal pad (pin 4) for enhanced heat dissipation. Pin 2 is cut; pins 2 and 4 are internally connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated DC input (3.5–16 V); requires ≥0.1 µF ceramic bypass capacitor placed within 1–2 cm. |
| 2 | GND | Ground reference for internal circuitry; pin physically cut but electrically tied to pin 4 (fin). |
| 3 | OUTPUT | Regulated 2.5 V output; requires ≥10 µF low-impedance electrolytic capacitor for stability and load transient response. |
| 4 | GND (Fin) | Exposed thermal pad - must be soldered to PCB copper pour for thermal conduction and electrical grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | PNP pass transistor enables 0.7 V dropout at 1 A - eliminates need for high-headroom input supplies. |
| Integrated Saturation Protection | Reduces quiescent current surge during low-VIN startup (e.g., <3.5 V), preventing excessive self-heating. |
| SOA Protection | Monitors VCE and IC in real time to prevent secondary breakdown of the PNP output transistor. |
| Pb-Free Construction | -AZ suffix confirms Sn100% plating with zero lead in external electrodes - compliant with RoHS Directive. |
| Robust Thermal Management | Exposed thermal pad (pin 4) and 12.5°C/W Rth(J-C) enable 1 A operation without external heatsink at ≤50°C ambient. |
Applications
| Industrial PLC I/O Modules | Office Equipment Power Rails |
|---|---|
Use Scenario: Regulating 2.5 V for isolated digital I/O buffers and level translators in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Local point-of-load regulator providing clean, low-noise 2.5 V to FPGA I/O banks and RS-485 transceivers. Use Value: 40 µVr.m.s. noise and 60 dB ripple rejection prevent bit errors in high-speed serial links under noisy factory-floor EMI. |
Use Scenario: Supplying 2.5 V to scanner image sensor interfaces and USB PHY circuitry in multifunction printers. IC Role / Device Role / Timing Role: Fixed-output LDO replacing switching regulators where EMI-sensitive analog imaging paths require ultra-low noise. Use Value: 0.7 V dropout allows direct use of 3.3 V system rail, eliminating intermediate conversion stages and reducing BOM count. |
| Medical Diagnostic Instrumentation | Test & Measurement Front-Ends |
Use Scenario: Powering 2.5 V reference buffers and precision op-amps in portable ultrasound signal conditioning modules. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source for 24-bit delta-sigma ADC bias networks. Use Value: −0.5 mV/°C temperature coefficient and ±2% initial accuracy maintain calibration stability across 0–85°C operating range. |
Use Scenario: Delivering 2.5 V to high-resolution DACs and analog multiplexers in benchtop multimeters and data loggers. IC Role / Device Role / Timing Role: Precision analog supply decoupled from noisy digital domains via integrated SOA and thermal protection. Use Value: On-chip over-current and thermal shutdown prevent field failures during probe short-circuits or ambient temperature excursions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70225DBVR | N-channel MOSFET pass device; 0.3 V dropout at 300 mA; 30 µVr.m.s. noise; no SOA protection. | Lower dropout and noise, but rated only for 300 mA - insufficient for 1 A loads without parallel staging. | Select TLV70225DBVR only when load current ≤300 mA and board space permits smaller SOT-23 package. |
| TPS7A1625DRBR | P-channel MOSFET pass device; 0.25 V dropout at 150 mA; 15 µVr.m.s. noise; thermal foldback instead of shutdown. | Ultra-low noise and dropout, but 150 mA max output - unsuitable for 1 A applications without redesign. | Choose TPS7A1625DRBR only for ultra-low-noise sub-150 mA analog rails; not a functional replacement for 1 A requirements. |
Compared with TLV70225DBVR and TPS7A1625DRBR, UPC2925BT-AZ uniquely delivers 1 A continuous output with integrated SOA and thermal shutdown in an industry-standard SC-63 package - making it the only drop-in solution for legacy 1 A 2.5 V LDO designs requiring robust fault protection.
Availability
UPC2925BT-AZ is available at Aetrix Electronics and suitable for industrial PLC I/O modules, office equipment power rails, and test & measurement front-ends requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for UPC2925BT-AZ 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
Renesas Electronics Corporation is a global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog power devices, and automotive SoCs.
UPC2925BT-AZ belongs to Renesas' legacy bipolar analog regulator family designed for cost-sensitive, high-reliability embedded applications in standard-grade equipment including office automation, industrial controls, and test instrumentation.
FAQ
What is the maximum input voltage rating for the UPC2925BT-AZ?
The UPC2925BT-AZ has an absolute maximum input voltage of 20 V. However, its recommended operating input voltage range is 3.5 V to 16 V for stable 2.5 V regulation at full 1 A load. Exceeding 16 V risks exceeding internal power dissipation limits, especially without adequate PCB copper pour on the thermal pad.
Does the UPC2925BT-AZ require an external output capacitor, and what type is recommended?
Yes, the UPC2925BT-AZ requires a minimum 10 µF low-impedance electrolytic capacitor at the OUTPUT pin to ensure stability and improve load transient response. For sub-zero temperature operation, an aluminum polymer or solid tantalum capacitor is recommended over standard aluminum electrolytics due to lower ESR drift at cold temperatures.
How does the saturation protection feature function in the UPC2925BT-AZ during low-input-voltage conditions?
The saturation protection in UPC2925BT-AZ activates when input voltage drops near the 2.5 V output level, reducing quiescent current rise to ≤80 mA. This prevents excessive self-heating during brown-out events or soft-start sequences where VIN may briefly fall below 3.5 V, preserving device reliability without external circuitry.
Can the UPC2925BT-AZ be used in parallel to increase output current beyond 1 A?
No, the UPC2925BT-AZ is not designed for parallel operation. Its PNP pass transistor lacks built-in current-sharing features like thermal tracking or master-slave control. Attempting parallel connection risks thermal runaway and uneven current distribution due to parameter mismatches between units.
What is the thermal resistance specification for the UPC2925BT-AZ in its SC-63 package?
The UPC2925BT-AZ in SC-63 (MP-3Z) package has a junction-to-case thermal resistance (Rth(J-C)) of 12.5°C/W and junction-to-ambient (Rth(J-A)) of 125°C/W. Effective thermal performance requires soldering pin 4 (exposed fin) to ≥2 cm² of 2-oz copper pour with ≥4 thermal vias to inner ground planes.
UPC2925BT-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- 1
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-63 (MP-3Z)
UPC2925BT-AZ FAQ
1.How can I place an order for UPC2925BT-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2925BT-AZ 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 UPC2925BT-AZ reliable?
The price and inventory of UPC2925BT-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC2925BT-AZ is usually 5 days.
3.What payment methods are accepted for UPC2925BT-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2925BT-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2925BT-AZ?
UPC2925BT-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2925BT-AZ 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 UPC2925BT-AZ?
For technical support, including UPC2925BT-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2925BT-AZ requirements.
6.How does Aetrix verify that UPC2925BT-AZ is sourced from the original manufacturer or authorized distributors?
All UPC2925BT-AZ 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 UPC2925BT-AZ meets industry standards.
7.What is the process for return or replacement of UPC2925BT-AZ?
All UPC2925BT-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC2925BT-AZ, 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 UPC2925BT-AZ part is unused and in its original packaging.
Return procedure for UPC2925BT-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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