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Renesas UPC2912T-AZ
- Part No.:
- UPC2912T-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC2912T-AZ.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
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Inventory:1,633
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Product details
Overview
UPC2912T-AZ from Renesas Electronics is a three-terminal, PNP-based low dropout (LDO) positive voltage regulator delivering 12 V at up to 1.0 A output current with a typical dropout voltage of 0.7 V at full load. It integrates on-chip over-current, thermal shutdown, and safe operating area (SOA) protection circuits, and is packaged in SC-63 (MP-3Z) for surface-mount applications in industrial power supplies and embedded systems.
For engineers reviewing the UPC2912T-AZ datasheet, UPC2912T-AZ pinout, UPC2912T-AZ application, or UPC2912T-AZ equivalent, this page provides verified specifications, package dimensions, real-world design implications of dropout and ripple rejection, and validated alternative parts for 12 V LDO replacement scenarios in space-constrained PCB layouts.
Technical Context
The UPC2912T-AZ uses a PNP pass transistor architecture-unlike conventional NPN-based regulators-to achieve low dropout while maintaining high output current capability. Its internal error amplifier drives the PNP transistor with start-up circuitry, reference voltage, and multiple protection blocks including saturation protection and SOA monitoring.
Designed for fixed 12 V output, it operates across an input range of 13–18 V and supports ambient temperatures from –30°C to +85°C. The device requires external input (≥0.1 µF) and output (≥47 µF) capacitors for stability and load regulation, with specific placement guidance (<2 cm from pins) to suppress oscillation and improve transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 12.0 V ±4% (11.52–12.48 V at 500 mA, 11.4–12.6 V at 1 A), enabling stable rail for microcontrollers and analog sensors. |
| Dropout Voltage | 0.7 V typical at 1 A (max 1.0 V), allowing operation with only 13 V input for full 12 V output-critical for battery-backed or low-headroom systems. |
| Output Current | 1.0 A continuous, supporting logic boards, motor drivers, and peripheral interfaces without external boost circuitry. |
| Ripple Rejection | 52 dB at 120 Hz (13–18 V input), suppressing AC line noise and switching supply artifacts before sensitive analog stages. |
| Quiescent Current | 2.1–4.0 mA at no load, scaling to ≤60 mA at 1 A, minimizing standby power loss in always-on equipment. |
| Thermal Resistance | 12.5 °C/W (junction-to-case), requiring minimal heatsinking when mounted on ≥1 in² copper area for full-load operation at 85°C ambient. |
| Protection Features | Integrated thermal shutdown, over-current limit (1.7 A short-circuit peak), and SOA protection-eliminating need for discrete foldback or shutdown ICs. |
Pinout & Package
UPC2912T-AZ is housed in SC-63 (MP-3Z), a 4-pin surface-mount plastic package with isolated GND fin (Pin 4). Pin 2 is cut; Pins 2 and 4 are internally connected as common GND. The package measures 9.5 mm × 5.6 mm × 2.3 mm (L×W×H) with 2.54 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated DC input (13–18 V); must be decoupled with ≥0.1 µF capacitor placed within 2 cm to prevent parasitic oscillation. |
| 2 | GND | Cut pin; electrically tied to Pin 4 fin-used for mechanical mounting and thermal conduction to PCB ground plane. |
| 3 | OUTPUT | Regulated 12 V output; requires ≥47 µF low-impedance electrolytic capacitor nearby to maintain stability under dynamic loads. |
| 4 | GND (Fin) | Exposed thermal pad; must be soldered to ≥1 in² copper pour for effective heat dissipation and SOA compliance at 1 A. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | 0.7 V typical dropout enables use with 13 V input-reducing upstream converter overhead and improving system efficiency in 12 V rail designs. |
| Integrated SOA Protection | Monitors voltage/current trajectory in real time to prevent PNP transistor destruction during overload or short-circuit events-no external current-sense resistor needed. |
| Pb-Free Construction | AZ suffix confirms RoHS-compliant, Sn100% plating with zero Pb in external electrodes-meeting global environmental compliance without derating. |
| High Ripple Rejection | 52 dB at 120 Hz ensures clean 12 V output even when fed from unfiltered rectified AC or noisy switch-mode supplies. |
| Wide Operating Temperature | –30°C to +85°C ambient rating supports deployment in industrial enclosures, automotive under-hood auxiliary modules, and outdoor electronics. |
Applications
| Industrial PLC I/O Module | Embedded Network Router Power |
|---|---|
Use Scenario: Powering isolated digital I/O channels and analog sensor front-ends in programmable logic controllers operating in factory environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Primary 12 V LDO regulator supplying field-side interface circuitry, replacing linear regulators with higher dropout that require >15 V input rails. Use Value: Enables compact, fanless PLC designs by eliminating need for oversized heatsinks-thanks to 0.7 V dropout and integrated thermal shutdown. | Use Scenario: Providing clean 12 V bias to Ethernet PHYs, PoE controllers, and flash memory in enterprise-grade network routers deployed in telecom cabinets. IC Role / Device Role / Timing Role: Post-regulator after a 24 V intermediate bus, delivering low-noise power to timing-critical communication ICs with <210 µVrms output noise. Use Value: Maintains signal integrity in Gigabit Ethernet links by suppressing switching noise from upstream DC/DC converters via 52 dB ripple rejection. |
| Medical Diagnostic Peripheral | Automotive Body Control Module |
Use Scenario: Supplying regulated 12 V to portable ultrasound transducer driver circuits and ADC reference stages in handheld diagnostic tools. IC Role / Device Role / Timing Role: Low-noise, protected LDO ensuring stable analog performance and fault-safe shutdown during probe disconnection or cable faults. Use Value: Prevents data corruption during transient overloads using integrated SOA protection-avoiding costly external current-limiting ICs. | Use Scenario: Powering microcontroller peripherals (CAN transceivers, LIN drivers, LED drivers) in body control units exposed to automotive battery transients and cold-crank conditions. IC Role / Device Role / Timing Role: Robust 12 V regulator tolerant of 13–18 V input variation, with thermal shutdown preventing latch-up during prolonged high-ambient operation. Use Value: Supports extended temperature operation (–30°C to +85°C) without derating-enabling direct mounting on BCM PCBs without additional thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117-12CDR | NPN-based LDO; 1.2 V dropout at 800 mA; 800 mA max output; TO-252 package. | Limited to lower current and higher dropout-requires ≥13.2 V input for 12 V output, reducing system efficiency. | Select if board space allows larger TO-252 footprint and 800 mA suffices; avoid where 1 A and 0.7 V dropout are mandatory. |
| LD1086DT12R | PNP-based LDO; 1.5 V dropout at 1.5 A; DPAK package; 1.5 A rated but higher thermal resistance (15 °C/W). | Higher dropout increases upstream supply burden; DPAK requires more PCB area than SC-63's compact 9.5 × 5.6 mm outline. | Choose for higher current headroom (1.5 A) if thermal design accommodates 15 °C/W; not drop-in due to different pinout and footprint. |
Compared with TLV1117-12CDR and LD1086DT12R, UPC2912T-AZ delivers the lowest dropout (0.7 V) in the smallest surface-mount package (SC-63), making it optimal for space- and efficiency-constrained 12 V systems needing full 1 A without thermal derating.
Availability
UPC2912T-AZ is available at Aetrix Electronics and suitable for industrial automation, embedded networking, and medical diagnostics requiring stable component supply, RoHS compliance, and long-term lifecycle support.
Supply support for UPC2912T-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 specializing in microcontrollers, analog power devices, and embedded solutions for industrial, automotive, and IoT markets.
The µPC29xx series was designed specifically for high-current, low-dropout linear regulation in space-constrained industrial and communications equipment-emphasizing thermal robustness, integrated protection, and compatibility with Pb-free assembly processes.
FAQ
What is the minimum input voltage required for UPC2912T-AZ to maintain 12 V output at 1 A?
The UPC2912T-AZ requires a minimum input voltage of 13 V to sustain 12 V output at 1 A load, based on its typical 0.7 V dropout voltage (VDIF = 0.7 V TYP. at IO = 1 A). The datasheet specifies 13 V as the lower bound of the recommended input range (13–18 V) for full-load operation, ensuring regulation remains within ±5% tolerance across temperature and line variations.
Does UPC2912T-AZ require external capacitors, and what values are mandatory?
Yes, UPC2912T-AZ requires two external capacitors: CIN ≥0.1 µF (film or ceramic) placed within 2 cm of the INPUT pin to prevent parasitic oscillation, and COUT ≥47 µF (low-impedance electrolytic) near the OUTPUT pin to ensure stability and improve load regulation. These values are specified in the Typical Connection diagram and Absolute Maximum Ratings section of the Renesas datasheet G10026EJ4V0DS.
How does the thermal protection in UPC2912T-AZ respond to overheating?
The UPC2912T-AZ incorporates internal thermal shutdown that activates when junction temperature exceeds +150°C, forcing output disable until temperature falls below the hysteresis threshold (~135°C). This behavior is documented in the Absolute Maximum Ratings table and Block Diagram, where "Thermal shut down" is shown as a dedicated circuit monitoring TJ and disabling the drive circuit to protect the PNP pass transistor.
Can UPC2912T-AZ be used in automotive applications, and what temperature grade does it carry?
UPC2912T-AZ is rated for –30°C to +85°C operating ambient temperature and carries the "Standard" quality grade per Renesas' classification-intended for industrial, office, and communications equipment-not automotive safety-critical systems. While it functions in under-hood auxiliary modules, Renesas explicitly excludes transportation equipment (including automobiles) from Standard-grade usage without written consent, per Document Notice #7.
What is the significance of the "-AZ" suffix in UPC2912T-AZ?
Per Renesas' ordering information, the "-AZ" suffix indicates a Pb-free product with Sn100% plating and zero lead content in external electrodes-fully compliant with RoHS Directive 2011/65/EU. This designation appears in the Package Table and Recommended Soldering Conditions sections of datasheet G10026EJ4V0DS, confirming environmental compliance without performance trade-offs.
UPC2912T-AZ 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:
- -
UPC2912T-AZ FAQ
1.How can I place an order for UPC2912T-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2912T-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 UPC2912T-AZ reliable?
The price and inventory of UPC2912T-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC2912T-AZ is usually 5 days.
3.What payment methods are accepted for UPC2912T-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2912T-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2912T-AZ?
UPC2912T-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2912T-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 UPC2912T-AZ?
For technical support, including UPC2912T-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2912T-AZ requirements.
6.How does Aetrix verify that UPC2912T-AZ is sourced from the original manufacturer or authorized distributors?
All UPC2912T-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 UPC2912T-AZ meets industry standards.
7.What is the process for return or replacement of UPC2912T-AZ?
All UPC2912T-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC2912T-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 UPC2912T-AZ part is unused and in its original packaging.
Return procedure for UPC2912T-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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