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Renesas UPC2903T-E2-AZ
- Part No.:
- UPC2903T-E2-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC2903T-E2-AZ.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
UPC2903T-E2-AZ from Renesas Electronics is a 3.0 V, 1 A low-dropout linear voltage regulator in SC-63 (MP-3Z) package with PNP output transistor, 0.7 V typical dropout at 1 A, on-chip thermal and over-current protection, and ±3% output voltage accuracy over temperature and load - used in industrial power rails requiring stable low-noise 3.0 V supply.
For engineers reviewing the UPC2903T-E2-AZ datasheet, UPC2903T-E2-AZ pinout, UPC2903T-E2-AZ application, or UPC2903T-E2-AZ equivalent, key selection criteria include dropout voltage at full load, thermal resistance (12.5°C/W junction-to-case), Pb-free compliance, tape-and-reel packaging (2000 pcs/reel, pin 1 at take-up side), and compatibility with 4.0–16 V input range.
Technical Context
The UPC2903T-E2-AZ implements a PNP-based LDO architecture with internal reference voltage, error amplifier, drive circuit, and integrated protection blocks including thermal shutdown, safe operating area (SOA) control, and over-current limiting. Its design eliminates the need for external NPN pass transistor biasing.
It operates across –30°C to +85°C ambient, supports up to +125°C junction temperature, and delivers regulated 3.0 V output with <30 mV line regulation (4.0–16 V input) and <30 mV load regulation (0–1 A load), enabling use in thermally constrained PCB layouts without heatsinking under moderate loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±3% (2.85–3.15 V over 0°C–125°C junction temp and 0–1 A load) |
| Max Output Current | 1.0 A continuous - sufficient for microcontroller cores, sensors, and analog front-ends |
| Dropout Voltage | 0.7 V typical at 1 A - enables operation from 3.7 V input (e.g., Li-ion single-cell + margin) |
| Quiescent Current | 2.0–4.0 mA at zero load; ≤60 mA at 1 A - balances efficiency and light-load stability |
| Ripple Rejection | 48–63 dB at 120 Hz - suppresses AC ripple from unregulated DC/DC or rectified supplies |
| Output Noise | 52 µVr.m.s. (10 Hz–100 kHz) - suitable for noise-sensitive analog circuits |
| Thermal Resistance | 12.5°C/W (junction-to-case) - requires minimal heatsinking when mounted to PCB copper pour |
Pinout & Package
UPC2903T-E2-AZ uses the SC-63 (MP-3Z) surface-mount package: 4-pin, isolated fin (pin 4 = GND/FIN), with pin 2 cut per datasheet Note 2. Pin 1 is INPUT, pin 2 is unused (cut), pin 3 is OUTPUT, pin 4 is GND/FIN - all GND pins internally common.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated positive input (4.0–16 V); must be decoupled with ≥0.1 µF capacitor near pin |
| 2 | NC (Cut) | Physically removed per MP-3Z spec; no connection - not a functional terminal |
| 3 | OUTPUT | Regulated 3.0 V output; requires ≥47 µF low-ESR electrolytic capacitor for stability |
| 4 | GND / Fin | Power ground and thermal interface; must be soldered to large copper area for heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | PNP pass transistor enables 0.7 V dropout at 1 A - extends battery runtime vs. NPN-based regulators |
| Integrated Protection | Thermal shutdown, SOA protection, and current limiting prevent damage during overload or ambient rise |
| Pb-Free & RoHS Compliant | AZ suffix confirms Sn100% plating, no lead in external electrodes - meets global environmental requirements |
| Tape-and-Reel Packaging | E2 suffix denotes 16 mm embossed tape, pin 1 at take-up side, 2000 pcs/reel - optimized for SMT assembly |
| Stable with Ceramic Input Cap | Designed for ≥0.1 µF film or ceramic input capacitor - reduces BOM count vs. regulators needing tantalum |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powering 3.3 V logic and analog signal conditioning circuits in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying microcontroller peripherals, ADC references, and isolated CAN transceivers. Use Value: 0.7 V dropout allows direct regulation from 5 V rail or 2S LiFePO₄ (6.4 V max), reducing heat vs. higher-dropout alternatives. | Use Scenario: Local 3.0 V supply for door module microcontrollers and window motor drivers in 12 V automotive systems. IC Role / Device Role / Timing Role: Post-regulator after buck converter, delivering clean, protected 3.0 V to safety-critical MCU subsystems. Use Value: Integrated thermal shutdown prevents latch-up during under-hood temperature excursions up to +85°C ambient. |
| Medical Patient Monitor Sensor Hub | Point-of-Sale Terminal Power Management |
Use Scenario: Powering low-noise analog front-ends for ECG/SpO₂ sensor interfaces in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise 3.0 V source for precision op-amps and 16-bit ADCs in battery-powered medical equipment. Use Value: 52 µVr.m.s. output noise and 63 dB ripple rejection preserve signal integrity in sub-mV biomedical measurements. | Use Scenario: Regulating 3.0 V for EMV contactless smartcard readers and secure element ICs in retail terminals. IC Role / Device Role / Timing Role: Dedicated LDO for cryptographic co-processors requiring stable, glitch-free supply during transaction bursts. Use Value: On-chip over-current protection isolates faults without system-level reset, maintaining POS uptime during transient short circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UPC2903T-E2 | Same SC-63 package and electrical specs, but contains Pb in external electrodes (non-RoHS) | Not suitable for EU/China RoHS-compliant designs; requires leaded solder process | Select only if legacy manufacturing prohibits Pb-free components and environmental compliance is waived |
| TPS7A4700RGWR | Lower noise (4.7 µVr.m.s.), higher PSRR (70 dB), but 200 mA max output and 5-pin WQFN package | Requires redesign for lower current and different footprint; unsuitable for 1 A loads | Choose only when ultra-low noise is critical and load current ≤200 mA |
Compared with UPC2903T-E2-AZ, UPC2903T-E2 lacks Pb-free plating and violates modern environmental mandates, while TPS7A4700RGWR trades output current and package compatibility for superior noise performance - making UPC2903T-E2-AZ the optimal balance of 1 A capability, thermal robustness, and RoHS compliance in space-constrained industrial designs.
Availability
UPC2903T-E2-AZ is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and portable medical instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for UPC2903T-E2-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 from the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and connectivity solutions.
The µPC29xx series was designed specifically for cost-sensitive, high-reliability industrial and automotive power management applications requiring robust thermal protection and low-dropout operation without external components.
FAQ
What is the maximum input voltage rating for the UPC2903T-E2-AZ?
The UPC2903T-E2-AZ has an absolute maximum input voltage of 20 V. However, its recommended operating input voltage range is 4.0 V to 16 V for the 3.0 V output variant. Exceeding 16 V may degrade long-term reliability or trigger internal protection, even if within absolute max ratings.
Does the UPC2903T-E2-AZ require an external diode for reverse-voltage protection?
Yes - the UPC2903T-E2-AZ requires an external diode (D1) between INPUT and OUTPUT if the OUTPUT pin could ever exceed the INPUT voltage, such as during power-down sequencing or backup supply scenarios. This prevents reverse current flow that could damage the internal PNP pass transistor.
How does the thermal performance of UPC2903T-E2-AZ compare between SC-63 and TO-220 packages?
The UPC2903T-E2-AZ (SC-63) has a junction-to-case thermal resistance of 12.5°C/W, versus 7°C/W for the HF-series TO-220 variant. This means the SC-63 version requires more PCB copper area for equivalent power dissipation - e.g., >4 cm² of 2-oz copper connected to pin 4 (GND/FIN) is recommended for 1 A continuous operation at +70°C ambient.
Can the UPC2903T-E2-AZ be used with ceramic output capacitors?
No - the UPC2903T-E2-AZ requires a minimum 47 µF output capacitor with low ESR, specified as an electrolytic type in the datasheet. Ceramic capacitors alone lack sufficient ESR for stability and may cause oscillation; a hybrid approach (electrolytic + ceramic parallel) is acceptable if total capacitance and ESR meet spec.
What is the purpose of the cut pin (pin 2) in the UPC2903T-E2-AZ SC-63 package?
Pin 2 in the UPC2903T-E2-AZ SC-63 (MP-3Z) package is physically cut per datasheet Note 2 and serves no electrical function. It is removed to accommodate the isolated fin structure (pin 4), ensuring mechanical clearance and thermal isolation between input and ground paths - a defining feature of the MP-3Z variant.
UPC2903T-E2-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-E2-AZ FAQ
1.How can I place an order for UPC2903T-E2-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2903T-E2-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-E2-AZ reliable?
The price and inventory of UPC2903T-E2-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-E2-AZ is usually 5 days.
3.What payment methods are accepted for UPC2903T-E2-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2903T-E2-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2903T-E2-AZ?
UPC2903T-E2-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2903T-E2-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-E2-AZ?
For technical support, including UPC2903T-E2-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2903T-E2-AZ requirements.
6.How does Aetrix verify that UPC2903T-E2-AZ is sourced from the original manufacturer or authorized distributors?
All UPC2903T-E2-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-E2-AZ meets industry standards.
7.What is the process for return or replacement of UPC2903T-E2-AZ?
All UPC2903T-E2-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC2903T-E2-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-E2-AZ part is unused and in its original packaging.
Return procedure for UPC2903T-E2-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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