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Renesas UPC2903T-E1-AZ
- Part No.:
- UPC2903T-E1-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC2903T-E1-AZ.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
UPC2903T-E1-AZ from Renesas Electronics is a 3.0 V, 1 A low-dropout linear voltage regulator with PNP output transistor, SC-63 (MP-3Z) surface-mount package, 0.7 V typical dropout at 1 A, and integrated over-current, thermal, and safe-operating-area protection - used in industrial power supplies and embedded control modules requiring stable low-voltage bias.
For engineers reviewing the UPC2903T-E1-AZ datasheet, UPC2903T-E1-AZ pinout, UPC2903T-E1-AZ application, or UPC2903T-E1-AZ equivalent, key selection considerations include dropout voltage at full load, thermal resistance (12.5°C/W junction-to-case), Pb-free compliance (Sn100% plating), and compatibility with 47 µF output capacitance for load regulation stability.
Technical Context
The UPC2903T-E1-AZ implements a PNP-based LDO architecture enabling low dropout operation without external pass transistors. Its internal error amplifier compares a bandgap-referenced voltage against the regulated output, driving a PNP output stage with saturation and SOA protection circuits to limit current and power dissipation under fault conditions.
It operates across –30°C to +85°C ambient temperature with junction limits up to +150°C, features 52 µVr.m.s. output noise (10 Hz–100 kHz), and delivers 48–63 dB ripple rejection at 120 Hz - optimized for post-regulation of switching converter outputs in noise-sensitive analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±4% (2.85–3.15 V over full temp/load range) - ensures stable logic-level supply for 3.3 V I/O systems with margin. |
| Dropout Voltage | 0.7 V typ. at 1 A - enables operation from 3.7 V input, critical for battery-powered 3 V systems. |
| Max Output Current | 1.0 A continuous - supports microcontroller cores, sensors, and interface ICs without external boost. |
| Quiescent Current | 2.0–4.0 mA at zero load; ≤60 mA at 1 A - balances low-noise performance with standby efficiency. |
| Ripple Rejection | 48–63 dB at 120 Hz - suppresses switching noise from upstream DC/DC converters feeding analog circuitry. |
| Thermal Resistance | 12.5°C/W (junction-to-case) - requires minimal heatsinking when mounted on ≥2 oz copper with thermal pad. |
| Output Noise | 52 µVr.m.s. (10 Hz–100 kHz) - suitable for precision ADC references and low-noise op-amp biasing. |
Pinout & Package
UPC2903T-E1-AZ uses the SC-63 (MP-3Z) 4-pin surface-mount package with isolated GND fin (Pin 4). Pin 2 is cut; Pins 2 and 4 are internally common GND terminals. The package features a metal heat sink tab for direct PCB thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | INPUT | Unregulated input supply (4.0–16 V); must be decoupled with ≥0.1 µF ceramic capacitor within 1–2 cm. |
| Pin 2 | GND | Cut lead; electrically common with Pin 4 fin - provides low-inductance ground return path. |
| Pin 3 | OUTPUT | Regulated 3.0 V output; requires ≥47 µF low-ESR electrolytic capacitor for transient stability. |
| Pin 4 | GND (Fin) | Exposed metal thermal pad; must be soldered to large PCB copper area for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| PNP output transistor architecture | Enables 0.7 V dropout at 1 A - reduces power loss by >50% vs. NPN-based regulators in same package. |
| Integrated SOA protection | Prevents destructive second breakdown during short-circuit or high-VIN/low-VOUT transients without external components. |
| Pb-free Sn100% plating | Complies with RoHS Directive and JEDEC J-STD-020 reflow profile IR60-00-3 (260°C peak). |
| Thermal shutdown | Activates at +150°C junction temperature and auto-recovers after cooldown - prevents permanent damage in enclosure-limited designs. |
| Low output noise | 52 µVr.m.s. enables direct powering of 12-bit+ SAR ADCs and RF bias rails without additional filtering. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Powering isolated digital input buffers and CAN transceiver bias rails in DIN-rail-mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying microcontroller peripherals and optocoupler LEDs. Use Value: 0.7 V dropout allows operation from 3.7 V backup battery during main supply failure, maintaining I/O supervision. | Use Scenario: Regulating 3.0 V for LIN transceivers and door module microcontrollers in 12 V automotive systems. IC Role / Device Role / Timing Role: Post-regulator downstream of buck converter, rejecting switching noise before sensitive comms interfaces. Use Value: 63 dB ripple rejection at 120 Hz eliminates audible whine and data corruption in LIN bus communication. |
| Medical Patient Monitor Sensors | Test & Measurement Front-Ends |
Use Scenario: Biasing low-noise instrumentation amplifiers and thermistor signal chains in portable vital sign monitors. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply rail for sensor front-end conditioning stages. Use Value: 52 µVr.m.s. output noise ensures <1 LSB error in 16-bit ADC conversions of sub-mV physiological signals. | Use Scenario: Providing clean 3.0 V reference for high-resolution DMM analog front-ends and calibration circuitry. IC Role / Device Role / Timing Role: Precision voltage source for ADC reference buffers and DAC output stages. Use Value: ±4% output tolerance and –0.5 mV/°C tempco enable stable metrology-grade measurements across lab temperature ranges. |
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, 4 µVr.m.s. noise, but 1.1 V dropout at 1 A and SOIC-20 package | Higher PSRR (70 dB @ 120 Hz), lower noise - suited for ultra-high-precision analog, not cost-sensitive industrial use | Select only if sub-10 µV noise and >65 dB PSRR are mandatory; requires larger PCB area and higher BOM cost. |
| LDL1117S30R | 800 mA max, 1.2 V dropout at 800 mA, SOT-223 package, no SOA protection | Limited current and thermal robustness - acceptable for low-power MCU cores but not for motor driver bias rails | Choose for space-constrained, low-current applications where SOA and 1 A capability are unnecessary. |
Compared with TPS7A4700RGWR and LDL1117S30R, UPC2903T-E1-AZ uniquely balances 1 A current, 0.7 V dropout, integrated SOA protection, and SC-63 thermal performance - making it optimal for industrial and automotive modules needing rugged, compact, mid-noise LDOs.
Availability
UPC2903T-E1-AZ is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical sensor systems requiring stable component supply with RoHS-compliant, tape-and-reel packaging (2000 pcs/reel).
Supply support for UPC2903T-E1-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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and enterprise applications.
The µPC29xx series was designed specifically for high-current, low-dropout regulation in space-constrained industrial and automotive power domains - emphasizing thermal robustness, fault resilience, and compatibility with legacy 3-terminal regulator footprints.
FAQ
What is the maximum input voltage rating for UPC2903T-E1-AZ?
The absolute maximum input voltage for UPC2903T-E1-AZ is 20 V. However, the recommended operating range is 4.0 V to 16 V per the datasheet's Recommended Operating Conditions table. Exceeding 16 V may increase dropout voltage and thermal stress without improving regulation - always verify input transient margins in your system design before finalizing the upstream supply.
Does UPC2903T-E1-AZ require an input capacitor, and what value is recommended?
Yes, UPC2903T-E1-AZ requires a minimum 0.1 µF ceramic input capacitor placed within 1–2 cm of the INPUT pin to prevent parasitic oscillation. The datasheet recommends film or high-stability ceramic capacitors; laminated ceramics must meet ≥0.1 µF across the full operating voltage and temperature range. Failure to install CIN risks instability and output ripple under dynamic load.
How does the thermal shutdown feature operate in UPC2903T-E1-AZ?
UPC2903T-E1-AZ activates thermal shutdown when junction temperature exceeds +150°C, disabling the output until the die cools below the hysteresis threshold (~135°C). This internal circuit is non-latching and self-recovering - no external reset is needed. The SC-63 package's 12.5°C/W Rth(j-c) enables reliable operation up to 1 A with proper PCB copper area, avoiding repeated cycling in well-designed layouts.
Can UPC2903T-E1-AZ be used with ceramic output capacitors only?
No - the datasheet specifies ≥47 µF output capacitance with low-impedance characteristics, explicitly recommending electrolytic capacitors for sub-zero operation. Ceramic-only solutions risk instability due to insufficient ESR; if ceramics are used, a minimum 47 µF must be paralleled with a 1–2 Ω damping resistor or hybrid polymer/ceramic stack meeting the ESR and ESL requirements defined in Application Note G10026EJ4V0DS.
What is the meaning of the "-E1-AZ" suffix in UPC2903T-E1-AZ?
The "-E1" denotes embossed tape packaging (16 mm wide, 2000 pcs/reel, Pin 1 on draw-out side), while "-AZ" indicates Pb-free construction with Sn100% plating on external electrodes - compliant with EU RoHS Directive and JEDEC J-STD-020 reflow profile IR60-00-3. This suffix confirms both packaging format and environmental compliance for automated SMT assembly.
UPC2903T-E1-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:
- -
UPC2903T-E1-AZ FAQ
1.How can I place an order for UPC2903T-E1-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2903T-E1-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 UPC2903T-E1-AZ reliable?
The price and inventory of UPC2903T-E1-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC2903T-E1-AZ is usually 5 days.
3.What payment methods are accepted for UPC2903T-E1-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2903T-E1-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2903T-E1-AZ?
UPC2903T-E1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2903T-E1-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 UPC2903T-E1-AZ?
For technical support, including UPC2903T-E1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2903T-E1-AZ requirements.
6.How does Aetrix verify that UPC2903T-E1-AZ is sourced from the original manufacturer or authorized distributors?
All UPC2903T-E1-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 UPC2903T-E1-AZ meets industry standards.
7.What is the process for return or replacement of UPC2903T-E1-AZ?
All UPC2903T-E1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC2903T-E1-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 UPC2903T-E1-AZ part is unused and in its original packaging.
Return procedure for UPC2903T-E1-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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