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Renesas UPC2908HB-AZ
- Part No.:
- UPC2908HB-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPC2908HB-AZ.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
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Inventory:2,145
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Product details
Overview
UPC2908HB-AZ from Renesas Electronics is a three-terminal, PNP-based low-dropout linear voltage regulator delivering 8.0 V output at up to 1.0 A 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 housed in an SC-64 (MP-3) surface-mount package. It serves as a primary post-regulator in industrial power supplies requiring stable 8 V rails for analog circuitry and microcontroller peripherals.
For engineers reviewing the UPC2908HB-AZ datasheet, UPC2908HB-AZ pinout, UPC2908HB-AZ application, or UPC2908HB-AZ equivalent, key selection criteria include its 8.0 V fixed output, 0.7 V dropout at 1 A, ±4% output voltage tolerance over temperature and load, integrated SOA protection, and Pb-free SC-64 package compatibility with standard reflow profiles.
Technical Context
The UPC2908HB-AZ employs a PNP pass transistor architecture-unlike conventional NPN-based regulators-which enables lower dropout and reduced power dissipation at high output currents. Its internal error amplifier compares a bandgap-referenced voltage against the output via resistive feedback (internal for fixed-voltage variants), driving the PNP transistor through a dedicated drive circuit.
Protection functions are fully integrated: thermal shutdown activates at TJ ≥ 150°C; over-current limiting responds to output short-circuit conditions; and SOA protection dynamically restricts collector-emitter voltage and current simultaneously to prevent device destruction during transient overload events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.0 V nominal, ±4% tolerance (7.6 V to 8.4 V) across –30°C to +125°C junction temperature and 0–1 A load ensures stable biasing for 8 V logic and analog subsystems. |
| Dropout Voltage | 0.7 V typical at IO = 1 A (max 1.0 V) enables operation with only 9 V input, minimizing heat generation versus legacy regulators. |
| Output Current | 1.0 A continuous output supports power-hungry analog front-ends, sensor signal chains, and MCU I/O banks without external boost stages. |
| Quiescent Current | 1.9–4.0 mA at no load and 25–60 mA at 1 A load balances low standby power with robust regulation under full load. |
| Ripple Rejection | 42–58 dB at 120 Hz (9–18 V input) suppresses AC line noise and switching supply ripple in mixed-signal systems. |
| Thermal Resistance | Rth(J–C) = 12.5°C/W (SC-64 package) allows ~8 W power dissipation with modest heatsinking at TC = 25°C. |
| Protection Features | Integrated thermal shutdown, over-current limit, and SOA protection eliminate need for discrete protection components in board-level design. |
Pinout & Package
UPC2908HB-AZ uses the SC-64 (MP-3) 4-pin surface-mount package with isolated GND pins (Pin 2 and Pin 4 both connected to the metal fin/thermal pad). The package measures 7.0 mm × 5.0 mm × 2.3 mm and is Pb-free (AZ suffix), compatible with IR reflow per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: INPUT | Regulator input supply connection | Accepts 9–18 V DC; requires ≥0.1 µF ceramic bypass capacitor placed within 1–2 cm to prevent oscillation. |
| 2: GND | Signal ground reference | Primary ground return for control circuitry; electrically common with Pin 4 (fin) but routed separately for noise isolation in layout. |
| 3: OUTPUT | Regulated 8.0 V output terminal | Delivers up to 1.0 A; requires ≥47 µF low-impedance electrolytic capacitor close to pin to ensure stability and load transient response. |
| 4: GND (Fin) | Thermal pad / power ground | Exposed metal pad tied internally to GND; must be soldered to large PCB copper area for thermal conduction and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout operation | 0.7 V typical at 1 A enables use with 9 V input sources-critical for battery-powered or multi-rail systems where headroom is constrained. |
| On-chip SOA protection | Prevents destructive second breakdown by coordinating VCE and IC limits in real time-eliminates need for external foldback or current-sense circuitry. |
| Pb-free SC-64 package | Meets RoHS Directive requirements; compatible with standard SnAgCu reflow profiles (peak ≤ 260°C) without compromising thermal performance. |
| Fixed 8.0 V output | Eliminates external resistor network, reducing BOM count and layout area while ensuring production consistency and long-term stability. |
| High ripple rejection | 42–58 dB attenuation at 120 Hz suppresses rectified AC noise-essential for powering precision ADCs, op-amps, and PLLs in instrumentation. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Powering isolated analog input channels and digital output drivers in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Primary 8 V local regulator supplying signal conditioning circuitry and optocoupler interfaces. Use Value: 0.7 V dropout allows direct derivation from 9–12 V vehicle or field bus rails; SOA protection withstands inductive kickback from relay coils. | Use Scenario: Providing stable 8 V supply to microcontroller peripherals and CAN transceiver bias in body electronics modules. IC Role / Device Role / Timing Role: Fixed-output LDO for non-critical 8 V rail supporting LIN interface ICs and LED drivers. Use Value: ±4% output tolerance and 42 dB ripple rejection maintain CAN signal integrity; SC-64 footprint simplifies automated assembly. |
| Test & Measurement Equipment | Medical Diagnostic Sensors |
Use Scenario: Biasing precision op-amps and reference buffers in portable multimeters and oscilloscope front-ends. IC Role / Device Role / Timing Role: Low-noise post-regulator (145 µVr.m.s.) for analog signal path power domains. Use Value: 145 µVr.m.s. output noise and 58 dB ripple rejection preserve SNR in sub-mV measurement ranges. | Use Scenario: Supplying analog front-end amplifiers and ADCs in handheld ultrasound or ECG sensor nodes. IC Role / Device Role / Timing Role: Safety-rated 8 V regulator for patient-connected signal acquisition stages (Standard grade per Renesas classification). Use Value: Integrated thermal and over-current protection meets IEC 60601-1 basic safety requirements for non-life-support equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117-80CDR | NPN-based architecture; higher 1.2 V dropout at 1 A; 800 mA max output; TO-252 package. | Limited to lower-current 8 V rails; less suitable for thermally constrained layouts due to higher dissipation. | Select when cost sensitivity outweighs dropout and current requirements; verify thermal margin with Rth(J–A) = 60°C/W. |
| LD1086DTR80 | PNP-based like UPC2908HB-AZ; 1.5 A output; 1.3 V dropout; DPAK package; wider input range (4.5–30 V). | Better for higher-current or wider-input applications; larger DPAK footprint may conflict with dense layouts. | Choose for designs needing >1 A or >18 V input; confirm SOA protection absence requires external current limiting. |
Compared with TLV1117-80CDR and LD1086DTR80, UPC2908HB-AZ delivers superior dropout (0.7 V vs ≥1.2 V) in a compact SC-64 package with integrated SOA protection-making it optimal for space-constrained, thermally sensitive 8 V systems demanding robustness without external protection.
Availability
UPC2908HB-AZ is available at Aetrix Electronics and suitable for industrial automation, test equipment, and medical diagnostic sensor designs requiring stable component supply, RoHS-compliant packaging, and long-lifecycle support for embedded power management.
Supply support for UPC2908HB-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, and connectivity solutions for automotive, industrial, and IoT markets.
The µPC29xx series was designed specifically for high-reliability, low-dropout linear regulation in industrial and instrumentation applications-emphasizing thermal robustness, integrated protection, and fixed-output simplicity.
FAQ
What is the maximum input voltage rating for the UPC2908HB-AZ?
The absolute maximum input voltage for UPC2908HB-AZ is 20 V. However, the recommended operating input range is 9 V to 18 V per the datasheet's Recommended Operating Conditions table. Exceeding 18 V risks violating thermal limits and reducing reliability, especially at high ambient temperatures or full load.
Does the UPC2908HB-AZ require external capacitors, and what values are mandatory?
Yes, UPC2908HB-AZ requires two external capacitors: a minimum 0.1 µF ceramic capacitor (CIN) between INPUT and GND, placed within 1–2 cm of the IC to prevent parasitic oscillation; and a minimum 47 µF low-impedance electrolytic capacitor (COUT) between OUTPUT and GND to ensure stability and improve load regulation. Both are mandatory for reliable operation.
How does the SOA protection in UPC2908HB-AZ differ from standard over-current limiting?
Unlike simple current-limiting, UPC2908HB-AZ's SOA protection continuously monitors both output current and dropout voltage (VCE) to enforce the safe operating area boundary in real time. This prevents second breakdown failure during transient overloads-such as motor startup or relay switching-where high VCE and high IC coincide, which standard foldback or hiccup limiting cannot address.
Is the UPC2908HB-AZ pin-compatible with other members of the µPC29xxHB family?
Yes, all µPC29xxHB-series devices-including UPC2908HB-AZ-share identical SC-64 (MP-3) pinout (INPUT, GND, OUTPUT, GND-fin), identical footprint, and identical thermal pad layout. Only the output voltage differs (e.g., UPC2905HB = 5.0 V, UPC2912HB = 12.0 V); no PCB redesign is needed when swapping within the HB package family.
What is the output voltage tolerance of UPC2908HB-AZ over temperature and load?
UPC2908HB-AZ guarantees an output voltage of 7.6 V to 8.4 V (±4%) across the full operating junction temperature range (–30°C to +125°C) and full load range (0 A to 1.0 A), as specified in the Electrical Characteristics table for µPC2908 under "Output Voltage" (VO) parameter.
UPC2908HB-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:
- -
UPC2908HB-AZ FAQ
1.How can I place an order for UPC2908HB-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC2908HB-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 UPC2908HB-AZ reliable?
The price and inventory of UPC2908HB-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC2908HB-AZ is usually 5 days.
3.What payment methods are accepted for UPC2908HB-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC2908HB-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC2908HB-AZ?
UPC2908HB-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC2908HB-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 UPC2908HB-AZ?
For technical support, including UPC2908HB-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC2908HB-AZ requirements.
6.How does Aetrix verify that UPC2908HB-AZ is sourced from the original manufacturer or authorized distributors?
All UPC2908HB-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 UPC2908HB-AZ meets industry standards.
7.What is the process for return or replacement of UPC2908HB-AZ?
All UPC2908HB-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPC2908HB-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 UPC2908HB-AZ part is unused and in its original packaging.
Return procedure for UPC2908HB-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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