My Inquiry
My Account
Renesas UPC2903T-AZ
- Part No.:
- UPC2903T-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC2903T-AZ.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:4,343
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UPC2903T-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 across –30°C to +125°C junction temperature. It powers microcontroller core rails in industrial control modules requiring stable low-noise 3.0 V supply.
For engineers reviewing the UPC2903T-AZ datasheet, UPC2903T-AZ pinout, UPC2903T-AZ application, or UPC2903T-AZ equivalent, key selection criteria include dropout voltage at full load, thermal resistance (12.5°C/W junction-to-case), quiescent current behavior under startup and full load, and Pb-free SC-63 package compatibility with lead-free reflow profiles up to 260°C.
Technical Context
The UPC2903T-AZ implements a PNP-based LDO architecture with internal reference voltage, error amplifier, drive circuit, and multiple protection blocks including thermal shutdown, safe operating area (SOA) limiting, and over-current detection. Its design eliminates the need for external compensation due to integrated stability optimization.
It operates within 4.0 V to 16 V input range and delivers regulated 3.0 V output with line regulation ≤30 mV and load regulation ≤30 mV. The device uses an internal start-up circuit enabling reliable turn-on even at VIN as low as 2.95 V, and features dedicated GND (Pin 2) and fin-connected GND (Pin 4) for enhanced thermal path integrity in SC-63 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±3% (2.85–3.15 V over full temp/load range); meets tight tolerance requirements for MCU core logic supply. |
| Dropout Voltage | 0.7 V typical at 1 A; enables operation with only 3.7 V input, critical for battery-backed or low-headroom systems. |
| Max Output Current | 1.0 A continuous; supports single-core microcontrollers and peripheral ICs without external boost stages. |
| Quiescent Current | 2.0–4.0 mA at zero load; minimizes standby power loss in always-on industrial sensors. |
| 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); allows direct mounting to PCB copper pour or heatsink for >1 W dissipation. |
| Output Noise | 52 µVr.m.s. (10 Hz–100 kHz); ensures clean analog subsystem biasing in mixed-signal applications. |
Pinout & Package
UPC2903T-AZ uses the SC-63 (MP-3Z) 4-pin surface-mount package with isolated GND pins: Pin 2 is signal GND, Pin 4 is thermally enhanced GND fin-both internally connected and intended for separate PCB grounding to optimize thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated input supply (4.0–16 V); requires ≥0.1 µF ceramic bypass capacitor placed within 2 cm. |
| 2 | GND | Signal ground reference for error amplifier and internal circuits; connects to low-noise analog ground plane. |
| 3 | OUTPUT | Regulated 3.0 V output; requires ≥47 µF low-ESR electrolytic capacitor for transient load stability. |
| 4 | GND (Fin) | Thermal ground fin; must be soldered to large copper area for heat dissipation and reduced RθJA. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 0.7 V typical at 1 A enables use with LiFePO₄ batteries (3.2 V nominal) or post-regulation of buck converter outputs. |
| Integrated SOA protection | Prevents destructive second breakdown during short-circuit or high-VIN/low-VOUT transients without external foldback circuitry. |
| Pb-free SC-63 package | RoHS-compliant MP-3Z footprint supports 260°C peak reflow (IR60-00-3), eliminating lead contamination risk in medical/industrial assemblies. |
| Startup quiescent current | 12–30 mA at VIN = 2.95 V ensures reliable enablement even during brown-out conditions before main rail stabilizes. |
| Thermal shutdown threshold | 150°C junction limit with hysteresis prevents cycling during sustained overload; resumes operation after cooldown to ~135°C. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powers 32-bit ARM Cortex-M4 MCU and CAN transceiver in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Primary 3.0 V core regulator supplying CPU, memory, and digital peripherals; replaces discrete LDO+filter solutions. Use Value: 0.7 V dropout allows direct regulation from 5 V intermediate bus, reducing component count and board space by 35% vs. legacy NPN regulators. | Use Scenario: Supplies 3.0 V rail to door module microcontroller handling window lift, mirror fold, and LED status indicators. IC Role / Device Role / Timing Role: Low-noise post-regulator for MCU core domain, decoupled from noisy 12 V automotive battery via upstream buck converter. Use Value: 52 µVr.m.s. output noise prevents ADC measurement errors in hall-effect position sensing circuits. |
| Medical Patient Monitor Sensor Node | Smart Energy Meter MCU Subsystem |
Use Scenario: Provides stable 3.0 V supply to ultra-low-power ECG front-end ASIC and BLE radio in wearable diagnostic patch. IC Role / Device Role / Timing Role: Always-on LDO maintaining MCU sleep mode current below 4 µA while supporting fast wake-up from interrupt. Use Value: 2.0–4.0 mA quiescent current at zero load extends battery life to >12 months on CR2032 coin cell. | Use Scenario: Regulates 3.0 V for metrology SoC, RTC, and secure element in ANSI C12.22-compliant electricity meter. IC Role / Device Role / Timing Role: High-accuracy voltage reference source for precision ADC calibration and real-time clock oscillator biasing. Use Value: ±3% output tolerance and –0.5 mV/°C tempco ensure <0.1% energy measurement drift over –25°C to +70°C ambient. |
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 350 mV dropout at 1 A; requires external compensation. | Ultra-low-noise audio biasing; unsuitable for low-input-voltage battery apps due to higher dropout. | Select only when sub-10 µV noise is mandatory and input headroom exceeds 3.35 V. |
| MCP1703T-3002E/MB | 3.0 V, 250 mA, 6 µA quiescent current, SOT-23-5; no thermal shutdown or SOA protection. | Low-power IoT sensor nodes where load current never exceeds 250 mA and fault robustness is secondary. | Choose only for cost-sensitive, sub-300 mA designs where protection features are handled externally. |
Compared with TPS7A4700RGWR and MCP1703T-3002E/MB, UPC2903T-AZ uniquely balances 1 A output, 0.7 V dropout, integrated protection, and SC-63 thermal performance-making it optimal for industrial and automotive modules needing reliability without design overhead.
Availability
UPC2903T-AZ is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and medical sensor nodes requiring stable component supply with RoHS-compliant packaging and long-term lifecycle support.
Supply support for UPC2903T-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 connectivity solutions for automotive, industrial, and enterprise applications.
The µPC29xx series was designed specifically for high-reliability industrial and automotive power management, emphasizing robust thermal protection, low dropout operation, and compatibility with legacy TO-220 and modern surface-mount footprints.
FAQ
What is the maximum input voltage rating for UPC2903T-AZ?
The absolute maximum input voltage for UPC2903T-AZ is 20 V. However, the recommended operating input voltage range is 4.0 V to 16 V per the datasheet's Recommended Operating Conditions table. Exceeding 16 V may degrade long-term reliability or trigger thermal shutdown under load, and operation above 20 V risks permanent damage. Always verify actual system VIN transients remain within this limit.
Does UPC2903T-AZ require external capacitors, and what values are recommended?
Yes, UPC2903T-AZ requires two external capacitors: a minimum 0.1 µF ceramic capacitor (CIN) placed close to the INPUT pin to prevent parasitic oscillation, and a minimum 47 µF low-impedance electrolytic capacitor (COUT) at the OUTPUT pin to ensure stability and improve load regulation. The datasheet specifies CIN must be ≥0.1 µF and COUT ≥47 µF, with both placed within 1–2 cm of their respective pins.
How does the dual-GND configuration (Pins 2 and 4) function in UPC2903T-AZ?
In UPC2903T-AZ, Pin 2 is the signal ground reference for internal circuitry, while Pin 4 is the thermally enhanced GND fin-both electrically common but physically separated to allow independent PCB routing. This separation lets designers connect Pin 2 to a quiet analog ground plane and Pin 4 to a large thermal copper pour, improving noise immunity and heat dissipation simultaneously without ground loop coupling.
Is UPC2903T-AZ compatible with lead-free reflow processes?
Yes, UPC2903T-AZ is explicitly qualified for lead-free reflow per the IR60-00-3 profile: peak package surface temperature ≤260°C, reflow time ≤60 seconds at ≥220°C, and up to three reflow cycles. Its -AZ suffix confirms Pb-free external electrodes with Sn100% plating, meeting JEDEC J-STD-020D moisture sensitivity level 3 requirements when stored per specification.
What protection features are integrated into UPC2903T-AZ?
UPC2903T-AZ integrates four hardware protection functions: (1) over-current protection limiting short-circuit current to 1.2–3.0 A depending on input voltage, (2) thermal shutdown activating at 150°C junction temperature, (3) safe operating area (SOA) protection preventing transistor second breakdown during high-stress transients, and (4) internal saturation protection safeguarding the PNP output stage during low-VOUT/high-VIN conditions.
UPC2903T-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-AZ FAQ
1.How can I place an order for UPC2903T-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2903T-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-AZ reliable?
The price and inventory of UPC2903T-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-AZ is usually 5 days.
3.What payment methods are accepted for UPC2903T-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2903T-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2903T-AZ?
UPC2903T-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2903T-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-AZ?
For technical support, including UPC2903T-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2903T-AZ requirements.
6.How does Aetrix verify that UPC2903T-AZ is sourced from the original manufacturer or authorized distributors?
All UPC2903T-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-AZ meets industry standards.
7.What is the process for return or replacement of UPC2903T-AZ?
All UPC2903T-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC2903T-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-AZ part is unused and in its original packaging.
Return procedure for UPC2903T-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UPC2903T-AZ Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
