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Renesas UPD120N25T1B-E1-AZ
- Part No.:
- UPD120N25T1B-E1-AZ
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPD120N25T1B-E1-AZ.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
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Inventory:179,839
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Product details
Overview
UPD120N25T1B-E1-AZ from Renesas Electronics is a three-terminal, low-dropout positive-voltage regulator delivering 2.5 V at up to 0.3 A output current in SC-62 package. It features CMOS architecture for ultra-low quiescent current (60 μA typ.), on-chip overcurrent and thermal protection, and operates across −40°C to +85°C ambient. It serves as a stable local power supply for digital TV and HDD subsystems requiring low-noise, compact DC/DC regulation.
For engineers reviewing the UPD120N25T1B-E1-AZ datasheet, UPD120N25T1B-E1-AZ pinout, UPD120N25T1B-E1-AZ application, or UPD120N25T1B-E1-AZ equivalent, key selection criteria include dropout voltage (0.3 V typ. at 0.15 A), output noise (170 μVr.m.s.), ripple rejection (60 dB at 1 kHz), and Pb-free SC-62 packaging with 12 mm taping.
Technical Context
The UPD120N25T1B-E1-AZ implements a CMOS-based LDO architecture with internal error amplifier, reference voltage circuit, and dual protection blocks-overcurrent and thermal shutdown. Its low 60 μA quiescent current enables battery-sensitive applications without sacrificing transient response.
Designed for fixed 2.5 V output, it requires minimum input voltage of 4.5 V (per recommended operating conditions) and delivers stable regulation under load currents from 0 to 0.3 A. The SC-62 package supports thermal resistance of 62.5°C/W when mounted on a 16 cm² ceramic substrate, enabling higher power dissipation than SC-74A variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±2.5% (2.425–2.575 V over full load and input range); ensures compatibility with 2.5 V logic and memory rails. |
| Max Output Current | 0.3 A continuous; sufficient for powering core logic blocks in digital TV and HDD controller ICs. |
| Dropout Voltage | 0.3 V typical at 0.15 A; enables operation with minimal headroom-e.g., 4.5 V input → 2.5 V output. |
| Quiescent Current | 60 μA typical at zero load; reduces standby power loss in always-on subsystems. |
| Output Noise | 170 μVr.m.s. (10 Hz–100 kHz); low enough to avoid jitter coupling into sensitive analog or clock domains. |
| Ripple Rejection | 60 dB at 1 kHz; suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Shutdown | Activates at TJ ≥ 150°C; protects device during sustained overload or poor heatsinking. |
Pinout & Package
UPD120N25T1B-E1-AZ is housed in SC-62 package: 3-pin surface-mount, 4.5 mm × 2.5 mm × 1.6 mm body, gull-wing leads, Pb-free termination (AZ suffix). Thermal pad is not present; PCB copper area must provide heatsinking per Rth(J–A) = 62.5°C/W spec.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Regulator input supply connection | Accepts 4.5–5.5 V input; requires 0.1 μF bypass capacitor placed ≤2 cm away to prevent oscillation. |
| 2 (GND) | Ground reference for internal circuits and output | Dual GND pins (pins 2 and 3) reduce ground impedance and improve PSRR; both must be connected to system ground plane. |
| 3 (GND) | Secondary ground terminal | Shared ground path with pin 2; enhances thermal conduction and minimizes ground bounce under dynamic load. |
| 4 (OUTPUT) | Regulated 2.5 V output | Delivers up to 0.3 A; requires ≥10 μF output capacitor (ESR 1–8 Ω) placed adjacent to pin for stability and load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Low quiescent current | 60 μA typical enables >1-year battery life in standby mode for portable HDD or set-top box remote subsystems. |
| Integrated protection | On-chip overcurrent and thermal shutdown prevent latch-up or destruction during short-circuit or high-ambient conditions. |
| High PSRR at 1 kHz | 60 dB rejection of input ripple allows clean 2.5 V rail even when powered from noisy buck converter outputs. |
| SC-62 footprint | Compact 4.5 × 2.5 mm outline saves board space vs. TO-252 or SOT-223; compatible with standard reflow profiles (peak 260°C). |
| Pb-free construction | AZ suffix confirms RoHS-compliant external electrodes; meets JEDEC J-STD-020C reflow requirements. |
Applications
| Digital TV Power Management | HDD Controller Supply |
|---|---|
|
Use Scenario: Providing clean 2.5 V bias to video decoder ASICs and HDMI transmitter PHYs in flat-panel TV mainboards. IC Role / Device Role / Timing Role: Local post-regulation stage after primary 5 V DC/DC; ensures low-noise supply for timing-critical pixel processing blocks. Use Value: 170 μVr.m.s. output noise prevents luminance flicker and chroma crosstalk in high-resolution video paths. |
Use Scenario: Powering the servo control microcontroller and flash cache interface in 2.5-inch notebook HDD modules. IC Role / Device Role / Timing Role: Dedicated LDO for MCU core voltage; decouples digital switching noise from analog head-positioning circuitry. Use Value: 0.3 V dropout enables use of 4.5 V intermediate rail, reducing heat generation versus higher-dropout alternatives. |
| Audio DAC Reference Rail | Set-Top Box USB Hub Logic |
|
Use Scenario: Generating ultra-low-noise 2.5 V reference for stereo audio DACs in home theater receivers. IC Role / Device Role / Timing Role: Precision analog supply rail; isolated from digital supply domains via physical layout and LDO regulation. Use Value: 60 dB ripple rejection attenuates 1 MHz switching artifacts from adjacent SMPS, preserving THD+N < 0.002%. |
Use Scenario: Supplying 2.5 V I/O voltage to USB 2.0 hub controllers in cable/satellite STBs with multi-rail power architectures. IC Role / Device Role / Timing Role: Interface-level regulator ensuring signal integrity for 480 Mbps data lanes. Use Value: Dual GND pins minimize ground shift during hot-plug transients, preventing enumeration failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2202K-2.5TRG1 | Higher quiescent current (120 μA typ.), SOT-23-5 package, no thermal shutdown. | Lacks integrated thermal protection; unsuitable for enclosed, high-ambient environments like sealed STB enclosures. | Select only if board space is constrained and thermal margin exceeds 25°C above ambient. |
| MCP1700T-2502E/TT | Lower max output current (250 mA), SC-70-5 package, 175 μVr.m.s. noise, no overcurrent latch. | Cannot sustain 0.3 A continuously; may brown-out during HDD spin-up surges. | Prefer for cost-sensitive, low-current audio peripherals-not for HDD or video ASIC loads. |
Compared with AP2202K-2.5TRG1 and MCP1700T-2502E/TT, UPD120N25T1B-E1-AZ provides superior thermal robustness, guaranteed 0.3 A delivery, and lower noise-making it optimal for thermally demanding, noise-sensitive consumer storage and display subsystems.
Availability
UPD120N25T1B-E1-AZ is available at Aetrix Electronics and suitable for digital TV, HDD, and audio equipment requiring stable component supply, RoHS compliance, and long-lifecycle support in consumer electronics manufacturing.
Supply support for UPD120N25T1B-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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.
The μPD120Nxx series was designed specifically for space-constrained, low-power consumer electronics-delivering high-accuracy, low-noise LDO regulation in miniature SC-62 and SC-74A packages.
FAQ
What is the minimum input voltage required for stable operation of UPD120N25T1B-E1-AZ?
The UPD120N25T1B-E1-AZ requires a minimum input voltage of 4.5 V under recommended operating conditions to maintain 2.5 V output regulation across 0–0.3 A load. Below this, dropout behavior occurs-output voltage drops linearly with input. This threshold is specified in the datasheet's Recommended Operating Conditions table and verified across temperature and process corners.
Does UPD120N25T1B-E1-AZ include reverse-voltage protection?
No, UPD120N25T1B-E1-AZ does not integrate reverse-voltage protection. The datasheet cautions against applying voltage to the OUTPUT pin higher than INPUT; a Schottky diode (D1) must be externally added between INPUT and OUTPUT if such condition may occur-e.g., during hot-swap or backup power scenarios.
Can UPD120N25T1B-E1-AZ be used with ceramic output capacitors?
Yes, UPD120N25T1B-E1-AZ is compatible with ceramic output capacitors, provided total capacitance is ≥10 μF and ESR falls within 1–8 Ω over the operating temperature and voltage range. The datasheet explicitly validates stability with laminated ceramics meeting these specs-critical for avoiding oscillation in compact layouts.
What is the thermal resistance (Rth(J–A)) of UPD120N25T1B-E1-AZ in its SC-62 package?
When mounted on a 16 cm² ceramic substrate (0.7 mm thick), UPD120N25T1B-E1-AZ achieves Rth(J–A) = 62.5°C/W. This value assumes optimal PCB copper area and reflow profile per Renesas' Semiconductor Device Mount Manual. On smaller pads, thermal resistance rises significantly-e.g., to 315°C/W on 75 mm² substrate.
Is UPD120N25T1B-E1-AZ qualified for automotive applications?
No, UPD120N25T1B-E1-AZ is rated for Standard-grade applications per Renesas' quality classification-intended for consumer electronics including digital TV, audio, HDD, and DVD systems. It is not qualified to AEC-Q100 or rated for automotive temperature ranges (−40°C to +125°C junction); use Renesas' RAQ-series LDOs for automotive designs.
UPD120N25T1B-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:
- -
UPD120N25T1B-E1-AZ FAQ
1.How can I place an order for UPD120N25T1B-E1-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD120N25T1B-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 UPD120N25T1B-E1-AZ reliable?
The price and inventory of UPD120N25T1B-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 UPD120N25T1B-E1-AZ is usually 5 days.
3.What payment methods are accepted for UPD120N25T1B-E1-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD120N25T1B-E1-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD120N25T1B-E1-AZ?
UPD120N25T1B-E1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD120N25T1B-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 UPD120N25T1B-E1-AZ?
For technical support, including UPD120N25T1B-E1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD120N25T1B-E1-AZ requirements.
6.How does Aetrix verify that UPD120N25T1B-E1-AZ is sourced from the original manufacturer or authorized distributors?
All UPD120N25T1B-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 UPD120N25T1B-E1-AZ meets industry standards.
7.What is the process for return or replacement of UPD120N25T1B-E1-AZ?
All UPD120N25T1B-E1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with UPD120N25T1B-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 UPD120N25T1B-E1-AZ part is unused and in its original packaging.
Return procedure for UPD120N25T1B-E1-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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