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Renesas UPC2925HB-AY
- Part No.:
- UPC2925HB-AY
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC2925HB-AY.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
UPC2925HB-AY 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 UPC2925HB-AY datasheet, UPC2925HB-AY pinout, UPC2925HB-AY application, or UPC2925HB-AY equivalent, this page delivers verified specifications, package mapping to SC-64 (MP-3), functional context within LDO design constraints, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The UPC2925HB-AY employs a PNP pass transistor architecture enabling low dropout operation without requiring a PMOS or NPN-based control loop. Its internal error amplifier drives the PNP base via a start-up circuit and includes dedicated saturation protection triggered when input voltage falls near output level.
Thermal shutdown activates at TJ ≥ 150°C, and SOA protection limits power dissipation dynamically during transient overload. The device operates across −30°C to +85°C ambient, with junction temperature rated to +125°C under recommended conditions and +150°C absolute maximum.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2% - ensures stable logic supply for 2.5 V I/O domains without external feedback components. |
| Dropout Voltage | 0.7 V typical at IO = 1 A - enables regulation from 3.2 V input, minimizing heat generation in low-voltage systems. |
| Output Current | 1 A continuous - supports single-rail powering of microcontrollers, sensors, or interface ICs without external boost stages. |
| Quiescent Current | 2–60 mA depending on load - scales with output current, reducing standby loss compared to fixed-bias regulators. |
| Thermal Resistance | Rth(J–C) = 12.5°C/W - requires heatsinking or PCB copper area for >0.8 W dissipation in enclosed environments. |
| 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) - suitable for analog signal chains where clean biasing is critical. |
Pinout & Package
UPC2925HB-AY uses the SC-64 (MP-3) surface-mount package: 4-pin, GND-isolated layout with exposed fin (Pin 4) thermally and electrically tied to Pin 2 (GND). No lead bending or trimming required; Pin 2 is not cut in HB variant (unlike HF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated DC input; must be ≥3.5 V for full 1 A operation and ≥2.5 V + VDIF to maintain regulation. |
| 2 | GND | Ground reference for internal circuits and error amplifier; electrically common with Pin 4 fin. |
| 3 | OUTPUT | Regulated 2.5 V output; requires 10 µF low-ESR capacitor placed ≤2 cm from pin to prevent oscillation. |
| 4 | GND (Fin) | Exposed metal pad for thermal conduction to PCB ground plane; mandatory for thermal performance above 0.5 A. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | PNP pass element achieves 0.7 V dropout at 1 A, enabling use with 3.3 V or higher pre-regulated rails. |
| Integrated Protection | Thermal shutdown, SOA limiting, and over-current protection operate autonomously without external components. |
| Saturation Startup Guard | Prevents excessive quiescent current (>80 mA) during low-VIN startup by disabling drive until VIN exceeds threshold. |
| Pb-Free Construction | Sn100% plating per -AY suffix; compliant with RoHS Directive and compatible with standard reflow profiles (IR60-00-3). |
| Stable with Ceramic Output Caps | Designed for ≥10 µF low-ESR electrolytic or polymer capacitors; avoids instability seen in some LDOs with ceramic-only outputs. |
Applications
| Industrial PLC I/O Modules | Office Equipment Power Management |
|---|---|
|
Use Scenario: Providing isolated 2.5 V rail for ADC reference and digital isolator bias in modular PLC backplanes. IC Role / Device Role / Timing Role: Local LDO regulator supplying precision analog and isolation circuitry independent of main 5 V/3.3 V system rail. Use Value: 0.7 V dropout allows direct derivation from 3.3 V bus, reducing need for intermediate buck conversion and associated EMI. |
Use Scenario: Regulating 2.5 V for USB PHY transceivers and memory interfaces in multifunction printers and scanners. IC Role / Device Role / Timing Role: Fixed-output linear regulator ensuring stable voltage for high-speed digital I/O with tight noise tolerance. Use Value: 40 µVr.m.s. output noise and 60 dB ripple rejection maintain signal integrity in USB 2.0 data paths. |
| Embedded Controller Core Supply | Test & Measurement Instrumentation |
|
Use Scenario: Powering ARM Cortex-M series MCU cores requiring clean 2.5 V VDDIO in portable diagnostic devices. IC Role / Device Role / Timing Role: Primary output-stage regulator for microcontroller I/O domain, decoupled from noisy SMPS sources. Use Value: On-chip SOA protection prevents latch-up during hot-swap events or short-duration load surges in field-deployed units. |
Use Scenario: Generating reference voltage for 12-bit DACs and precision op-amp bias in handheld multimeters. IC Role / Device Role / Timing Role: Low-noise, high-accuracy voltage source for analog front-end calibration and signal conditioning. Use Value: ±2% output accuracy and −0.5 mV/°C tempco ensure measurement repeatability across −30°C to +85°C operating range. |
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 | NMOS-based, 0.3 V dropout at 300 mA; 25 µVr.m.s. noise; no SOA protection; max 300 mA output. | Lower noise but limited current; unsuitable for 1 A loads or surge-prone industrial environments. | Select only for space-constrained, low-current, ultra-low-noise applications where thermal margin is ample. |
| TPS7A1625DRBR | P-channel MOSFET, 0.25 V dropout at 150 mA; 150 mA max; integrated enable and power-good; no thermal shutdown. | Higher integration but lower current rating; lacks built-in thermal protection and SOA guard. | Prefer for battery-powered systems needing enable control and PG signaling, not for continuous 1 A industrial loads. |
Compared with TLV70225DBVR and TPS7A1625DRBR, the UPC2925HB-AY uniquely combines 1 A output, PNP-based low-dropout operation, full thermal/SOA/overcurrent protection, and Pb-free Sn100% plating-making it the only option among the three qualified for sustained high-current, high-reliability embedded power delivery.
Availability
UPC2925HB-AY is available at Aetrix Electronics and suitable for industrial PLC I/O modules, office equipment power management, and test & measurement instrumentation requiring stable component supply with long-term lifecycle support.
Supply support for UPC2925HB-AY 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 manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog power devices, and automotive SoCs.
The UPC2925HB-AY belongs to Renesas' legacy bipolar analog LDO family designed for cost-sensitive, high-reliability "Standard" grade applications including office equipment, industrial robots, and test instruments.
FAQ
What is the maximum input voltage for the UPC2925HB-AY?
The UPC2925HB-AY supports an absolute maximum input voltage of 20 V, but its recommended operating range is 3.5 V to 16 V. Exceeding 16 V risks exceeding thermal limits under load, while inputs below 3.5 V may trigger saturation protection and increase quiescent current beyond 80 mA. Always verify actual VIN against both absolute max and recommended ranges in your design.
Does the UPC2925HB-AY require an input capacitor?
Yes-the UPC2925HB-AY requires a minimum 0.1 µF input capacitor (CIN) placed within 1–2 cm of the INPUT pin to prevent parasitic oscillation. Film or high-quality ceramic capacitors are preferred; laminated ceramics must meet ≥0.1 µF capacitance across the full operating voltage and temperature range. Omitting CIN risks instability and erratic regulation.
How does the thermal protection in UPC2925HB-AY behave during overload?
The UPC2925HB-AY initiates thermal shutdown when junction temperature reaches 150°C, disabling output until TJ drops below ~135°C. This hysteresis prevents rapid cycling. During overload, SOA protection first limits current to prevent destructive power dissipation before thermal shutdown engages-providing layered defense against sustained shorts or excessive ambient temperatures.
Can the UPC2925HB-AY be used with ceramic output capacitors?
The UPC2925HB-AY is stable with ≥10 µF low-ESR electrolytic or polymer capacitors but is not optimized for pure ceramic output networks. Using only ceramic capacitors may cause ringing or oscillation due to insufficient ESR; if ceramics are required, add a 100 mΩ–1 Ω damping resistor in series with the capacitor or combine with a bulk electrolytic to meet stability criteria.
What does the "-AY" suffix indicate on UPC2925HB-AY?
Per Renesas documentation, the "-AY" suffix denotes a Pb-free version with 100% tin (Sn100%) plating on external terminals, compliant with EU RoHS Directive. It supports standard IR reflow profiles (peak ≤260°C, ≥220°C for ≤60 s) and is functionally identical to non-Pb-free variants except for finish composition and soldering profile compatibility.
UPC2925HB-AY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
UPC2925HB-AY FAQ
1.How can I place an order for UPC2925HB-AY through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2925HB-AY 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 UPC2925HB-AY reliable?
The price and inventory of UPC2925HB-AY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC2925HB-AY is usually 5 days.
3.What payment methods are accepted for UPC2925HB-AY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2925HB-AY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2925HB-AY?
UPC2925HB-AY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2925HB-AY 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 UPC2925HB-AY?
For technical support, including UPC2925HB-AY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2925HB-AY requirements.
6.How does Aetrix verify that UPC2925HB-AY is sourced from the original manufacturer or authorized distributors?
All UPC2925HB-AY 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 UPC2925HB-AY meets industry standards.
7.What is the process for return or replacement of UPC2925HB-AY?
All UPC2925HB-AY units undergo pre-shipment inspection (PSI). If there is an issue with UPC2925HB-AY, 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 UPC2925HB-AY part is unused and in its original packaging.
Return procedure for UPC2925HB-AY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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