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Renesas UPC2903HB-AZ
- Part No.:
- UPC2903HB-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC2903HB-AZ.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
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Inventory:1,935
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Product details
Overview
UPC2903HB-AZ from Renesas Electronics is a 3.0 V, 1 A low-dropout linear voltage regulator with PNP output transistor, SC-64 (MP-3) package, 0.7 V typical dropout at 1 A, on-chip thermal and over-current protection, and ±3% output voltage accuracy across –30°C to +125°C junction temperature - used in industrial power rails for microcontrollers and sensors requiring stable low-noise bias.
For engineers reviewing the UPC2903HB-AZ datasheet, UPC2903HB-AZ pinout, UPC2903HB-AZ application, or UPC2903HB-AZ equivalent, key selection criteria include dropout voltage under full load, thermal resistance (12.5°C/W junction-to-case), quiescent current behavior at startup (12–30 mA at VIN = 2.95 V), and Pb-free compliance per JEDEC J-STD-020.
Technical Context
The UPC2903HB-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) limiting, and over-current detection. Its regulation loop maintains output stability with ≥48 dB ripple rejection at 120 Hz and supports input voltages from 4.0 V to 16 V.
Unlike NPN-based regulators, this device achieves lower dropout by using a PNP pass transistor, enabling operation with VIN as low as VO + 0.7 V at 1 A. It requires external 0.1 µF CIN (close to INPUT pin) and 47 µF COUT (low-impedance electrolytic) for stability and transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±3% (2.85–3.15 V over full temp/load range); enables direct powering of 3.3 V-tolerant logic without margin loss. |
| Dropout Voltage | 0.7 V typical at 1 A (max 1.0 V); allows operation with only 3.7 V input for 3.0 V output, critical for battery-powered systems. |
| Output Current | 1.0 A continuous; supports high-current peripherals like displays or motor drivers in compact industrial modules. |
| Quiescent Current | 1.9–4.0 mA at no load; remains below 60 mA at full load, minimizing standby power in always-on applications. |
| Ripple Rejection | 48–63 dB at 120 Hz; suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Resistance | 12.5°C/W (junction-to-case); enables 10 W dissipation with modest heatsinking, suitable for enclosed enclosures. |
| Output Noise | 52 µVr.m.s. (10 Hz–100 kHz); low enough for analog sensor signal chains and precision ADC references. |
Pinout & Package
UPC2903HB-AZ uses the SC-64 (MP-3) surface-mount package - a 4-pin, isolated plastic case with exposed metal fin (Pin 4) tied to GND. Pin 2 is cut but internally connected to Pin 4; both serve as common ground terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated positive supply input; must be ≥4.0 V and ≤16 V; requires local 0.1 µF ceramic bypass. |
| 2 | GND (cut) | Internally bonded to Pin 4; mechanical stub only - not electrically functional as standalone terminal. |
| 3 | OUTPUT | Regulated 3.0 V output; drives load up to 1 A; requires 47 µF low-ESR capacitor within 1–2 cm. |
| 4 | GND (Fin) | Exposed metal thermal pad; must be soldered to PCB copper pour for thermal conduction and electrical grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout operation | 0.7 V typical at 1 A enables use in single-cell Li-ion (3.0–4.2 V) or 5 V rail derating scenarios. |
| Integrated SOA protection | Prevents destruction during short-circuit or high-VIN–VOUT transients without external foldback circuitry. |
| Pb-free construction | AZ suffix confirms RoHS-compliant Sn-plated leads and Pb-free external electrodes per JEDEC J-STD-020. |
| Wide ambient range | –30°C to +85°C operating ambient ensures reliability in uncontrolled industrial environments. |
| Startup capability | Functions down to VIN = 2.95 V (below nominal 3.0 V output), supporting brown-out recovery without reset controller. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powering isolated digital I/O drivers and analog sensor interfaces in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary 3.0 V bias regulator for 3.3 V-tolerant microcontrollers and RS-485 transceivers. Use Value: 0.7 V dropout allows operation from 5 V backplane even with 10% line drop; thermal shutdown prevents field failures during enclosure overheating. | Use Scenario: Supplying 3.0 V to LIN transceivers and door module microcontrollers in non-safety-critical automotive subsystems. IC Role / Device Role / Timing Role: Secondary LDO delivering clean, protected power from vehicle 5 V or 12 V domains. Use Value: 52 µVr.m.s. noise meets CISPR 25 Class 3 EMC requirements; –30°C start-up supports cold-climate deployment. |
| Medical Diagnostic Handheld | Point-of-Sale Terminal |
Use Scenario: Providing regulated 3.0 V to optical sensor arrays and low-power MCU in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise analog rail generator for precision photodiode signal conditioning. Use Value: Ripple rejection >48 dB isolates sensor front-end from noisy DC/DC converter inputs; Pb-free AZ suffix satisfies medical RoHS mandates. | Use Scenario: Powering NFC readers and secure element ICs in retail payment terminals with limited board space. IC Role / Device Role / Timing Role: Compact, thermally efficient 3.0 V source for cryptographic co-processors and display drivers. Use Value: SC-64 package footprint (7.0 × 5.0 mm) fits tight layouts; 12.5°C/W Rth(j-c) allows 1 A load without external heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73330PDBVR | Lower IQ (45 µA typ), smaller SOT-23-5 package, but only 300 mA rated output current. | Suitable for ultra-low-power IoT nodes; insufficient for 1 A loads like displays or motors. | Select when standby current dominates design priority and load current ≤300 mA. |
| TPS7A4700RGWR | Ultra-low noise (4 µVr.m.s.), adjustable output, but higher dropout (300 mV @ 1 A) and larger QFN package. | Better for high-precision analog; less suitable for battery-critical or space-constrained designs. | Select when sub-10 µV noise is mandatory and dropout margin permits ≥3.3 V input. |
Compared with TLV73330PDBVR and TPS7A4700RGWR, UPC2903HB-AZ uniquely balances 1 A output, 0.7 V dropout, and SC-64 thermal performance - making it optimal for cost-sensitive industrial modules where moderate noise and robust thermal handling outweigh ultra-low IQ or ultra-low-noise requirements.
Availability
UPC2903HB-AZ is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and portable medical diagnostics requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for UPC2903HB-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 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog power, and connectivity solutions.
The µPC29xx series was designed for industrial and automotive power management applications demanding robust thermal performance, integrated protection, and reliable operation across wide temperature ranges - with UPC2903HB-AZ targeting 3.0 V system rails in space-constrained, thermally demanding environments.
FAQ
What is the maximum input voltage rating for UPC2903HB-AZ?
The absolute maximum input voltage for UPC2903HB-AZ is 20 V, but the recommended operating range is 4.0 V to 16 V per the datasheet. Exceeding 16 V may trigger internal protection or reduce reliability; sustained operation above 20 V risks permanent damage. Always verify actual VIN under worst-case conditions including ripple and transients before final design sign-off for UPC2903HB-AZ.
Does UPC2903HB-AZ require an input capacitor, and what value is recommended?
Yes, UPC2903HB-AZ requires a minimum 0.1 µF ceramic capacitor (CIN) placed directly between INPUT and GND pins, as close as possible (<2 cm). This prevents parasitic oscillation due to trace inductance. Film or high-stability ceramic capacitors are preferred; laminated ceramics must meet the 0.1 µF minimum across operating voltage and temperature ranges. Omitting CIN risks instability and erratic regulation in UPC2903HB-AZ.
How does the thermal shutdown feature operate in UPC2903HB-AZ?
UPC2903HB-AZ activates thermal shutdown when junction temperature exceeds +150°C, disabling the output until TJ falls below +135°C (typical hysteresis). This protects against sustained overload or inadequate heatsinking. The device resumes normal operation automatically after cooldown - no external reset required. Thermal resistance is 12.5°C/W (junction-to-case), so PCB copper area under Pin 4 (GND fin) is critical for effective heat transfer in UPC2903HB-AZ.
Can UPC2903HB-AZ be used with an input voltage lower than its output voltage?
No - UPC2903HB-AZ is a positive LDO regulator and cannot operate with VIN < VOUT. If the OUTPUT pin is driven higher than INPUT (e.g., during hot-swap or backup battery activation), a reverse-bias diode (D1) must be added from INPUT to OUTPUT per the datasheet's Typical Connection diagram. Failure to do so risks internal damage and uncontrolled current flow in UPC2903HB-AZ.
What is the output voltage tolerance of UPC2903HB-AZ over temperature and load?
UPC2903HB-AZ guarantees output voltage within ±3% (2.85 V to 3.15 V) across –30°C to +125°C junction temperature and 0–1 A load. At 25°C and 500 mA, tolerance tightens to ±40 mV (2.96–3.04 V). This specification accounts for line regulation (≤30 mV), load regulation (≤30 mV), and temperature coefficient (–0.5 mV/°C), ensuring predictable behavior in real-world UPC2903HB-AZ deployments.
UPC2903HB-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:
- -
UPC2903HB-AZ FAQ
1.How can I place an order for UPC2903HB-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2903HB-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 UPC2903HB-AZ reliable?
The price and inventory of UPC2903HB-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC2903HB-AZ is usually 5 days.
3.What payment methods are accepted for UPC2903HB-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2903HB-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2903HB-AZ?
UPC2903HB-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2903HB-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 UPC2903HB-AZ?
For technical support, including UPC2903HB-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2903HB-AZ requirements.
6.How does Aetrix verify that UPC2903HB-AZ is sourced from the original manufacturer or authorized distributors?
All UPC2903HB-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 UPC2903HB-AZ meets industry standards.
7.What is the process for return or replacement of UPC2903HB-AZ?
All UPC2903HB-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC2903HB-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 UPC2903HB-AZ part is unused and in its original packaging.
Return procedure for UPC2903HB-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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