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Renesas UPD120N18TA-E1-AT
- Part No.:
- UPD120N18TA-E1-AT
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
UPD120N18TA-E1-AT.pdf
- Description:
- FIXED POSITIVE LDO REGULATOR
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
UPD120N18TA-E1-AT from Renesas Electronics is a three-terminal, low-dropout positive-voltage regulator delivering 1.8 V at up to 0.3 A output current in SC-74A package. It features 60 μA typical quiescent current, on-chip overcurrent and thermal protection, and 0.4 V typical dropout voltage at 0.15 A - optimized for power-sensitive digital TV, audio, and HDD subsystems.
For engineers reviewing the UPD120N18TA-E1-AT datasheet, UPD120N18TA-E1-AT pinout, UPD120N18TA-E1-AT application, or UPD120N18TA-E1-AT equivalent, this device serves as a Pb-free, taping-ready LDO for compact consumer electronics where low-noise, stable 1.8 V rail generation and thermal robustness are critical.
Technical Context
The UPD120N18TA-E1-AT uses a CMOS-based internal architecture enabling ultra-low quiescent current (60 μA typ.) and high ripple rejection (63 dB at 1 kHz). Its error amplifier drives an internal pass transistor with integrated reference voltage circuitry, supporting precise 1.8 V regulation across −40°C to +85°C ambient temperature.
Thermal shutdown and foldback overcurrent protection operate autonomously without external components. The regulator requires only two external capacitors: ≥0.1 μF ceramic input capacitor and ≥10 μF output capacitor with 1–8 Ω ESR to ensure stability and load transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V ±2% (ensures compatibility with 1.8 V logic I/O and core rails) |
| Max Output Current | 0.3 A continuous (supports mid-power digital ICs and interface circuits) |
| Dropout Voltage | 0.4 V typ. at 0.15 A (enables operation from 3.2 V input, e.g., single Li-ion or 3.3 V pre-regulated supply) |
| Quiescent Current | 60 μA typ. (minimizes standby power loss in always-on subsystems) |
| Ripple Rejection | 63 dB at 1 kHz (suppresses switching noise from upstream DC/DC converters) |
| Output Noise | 120 μVr.m.s. (10 Hz–100 kHz) (low enough for analog-sensitive audio signal chains) |
| Thermal Protection | Active shutdown above +150°C junction (prevents permanent damage during overload or poor heatsinking) |
Pinout & Package
UPD120N18TA-E1-AT is housed in SC-74A (5-pin plastic mini-mold) package, measuring 2.9 mm × 1.5 mm × 0.95 mm. Pin 1 is INPUT, Pin 2 is OUTPUT, and Pins 3 & 4 are GND (dual ground terminals reduce thermal resistance and improve PSRR). Pin 5 is not connected (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | INPUT | Unregulated input supply connection; must be decoupled with ≥0.1 μF ceramic capacitor near pin |
| Pin 2 | OUTPUT | Regulated 1.8 V output; requires ≥10 μF output capacitor with 1–8 Ω ESR for stability |
| Pins 3 & 4 | GND | Dual ground terminals lower thermal resistance and improve high-frequency PSRR via reduced loop inductance |
| Pin 5 | N.C. | No internal connection; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| CMOS process technology | Enables 60 μA quiescent current - critical for battery-backed or energy-harvesting systems |
| On-chip thermal shutdown | Automatic recovery after cooldown; prevents irreversible junction failure under sustained overload |
| On-chip overcurrent protection | Foldback current limiting reduces power dissipation during short-circuit events |
| Pb-free construction (-AT suffix) | Meets RoHS Directive; no lead in external electrodes or mold compound |
| SC-74A taping format | 8 mm embossed tape, 3000 pcs/reel, pin 1 on take-up side - compatible with standard SMT pick-and-place |
Applications
| Digital TV Power Management | Audio Codec Supply |
|---|---|
Use Scenario: Providing clean 1.8 V bias to HDMI transmitter ICs and video processor I/O banks in flat-panel TVs. IC Role / Device Role / Timing Role: Primary low-noise post-regulator for 1.8 V logic interface rails. Use Value: 120 μVr.m.s. output noise and 63 dB ripple rejection prevent pixel jitter and color banding artifacts. | Use Scenario: Powering DAC/ADC cores and analog front-end circuitry in home theater receivers. IC Role / Device Role / Timing Role: Dedicated low-noise analog supply regulator decoupled from noisy digital domains. Use Value: Dual GND pins minimize ground bounce, preserving SNR in 24-bit/192 kHz audio paths. |
| HDD Pre-amplifier Bias | Optical Drive Servo Control |
Use Scenario: Supplying 1.8 V to read/write channel ICs and servo microcontrollers in 2.5″ laptop HDDs. IC Role / Device Role / Timing Role: Compact, thermally robust LDO mounted directly on HDD flex cable or controller PCB. Use Value: 0.4 V dropout enables use of 3.3 V system rail while maintaining >100 mV headroom at full 0.3 A load. | Use Scenario: Regulating 1.8 V for spindle motor driver logic and laser diode control ICs in DVD/Blu-ray drives. IC Role / Device Role / Timing Role: Local point-of-load regulator isolated from main 5 V/12 V power stage noise. Use Value: Integrated thermal protection prevents latch-up during rapid disc spin-up transients. |
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 |
|---|---|---|---|
| AP2112K-1.8TRG1 | 0.6 A max output, 150 μA quiescent current, SOT-23-5 package | Higher current capability but higher IQ; less suitable for ultra-low-power standby modes | Select when >0.3 A peak load or smaller footprint is required, accepting higher idle power |
| MCP1700T-1802E/TT | 250 mA max output, 1.6 μA quiescent current, SOT-23-3 package | Ultra-low IQ but lower current rating and no dual-GND layout advantage | Select for battery-powered remote controls or sensors where <2 μA sleep current is mandatory |
Compared with AP2112K-1.8TRG1 and MCP1700T-1802E/TT, UPD120N18TA-E1-AT uniquely balances 0.3 A delivery, 60 μA IQ, dual-GND SC-74A packaging, and integrated thermal foldback - making it optimal for space-constrained, thermally active consumer storage and display subsystems.
Availability
UPD120N18TA-E1-AT is available at Aetrix Electronics and suitable for digital TV, audio equipment, and HDD applications requiring stable component supply, RoHS compliance, and SMT-ready taping.
Supply support for UPD120N18TA-E1-AT 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 SoC solutions for automotive, industrial, and consumer markets.
The μPD120Nxx series was designed specifically for compact, low-power consumer electronics requiring stable, low-noise, and thermally protected 1.5–3.3 V LDO regulation in ultra-small packages.
FAQ
What is the maximum input voltage rating for UPD120N18TA-E1-AT?
The absolute maximum input voltage for UPD120N18TA-E1-AT is +6 V. Exceeding this value, even momentarily, risks permanent damage. For reliable operation, the recommended input range is 3.2 V to 5.5 V - ensuring sufficient headroom for the 0.4 V typical dropout while maintaining regulation stability across temperature and load.
Does UPD120N18TA-E1-AT require external capacitors, and what values are specified?
Yes, UPD120N18TA-E1-AT requires two external capacitors: a minimum 0.1 μF ceramic capacitor at the INPUT pin (to suppress parasitic oscillation), and a minimum 10 μF output capacitor with 1–8 Ω ESR (to ensure stability and improve load regulation). Both must be placed within 2 cm of their respective pins per the datasheet layout guidance.
Is UPD120N18TA-E1-AT pin-compatible with other variants in the μPD120Nxx series?
UPD120N18TA-E1-AT shares identical SC-74A pinout and terminal assignment (INPUT–OUTPUT–GND–GND–N.C.) with all μPD120NxxTA variants (e.g., UPD120N15TA-E1-AT, UPD120N25TA-E1-AT). Voltage-specific variants are electrically interchangeable in layout - only the output voltage differs; no PCB changes are needed when swapping within the TA family.
What thermal protection behavior does UPD120N18TA-E1-AT exhibit under overload?
UPD120N18TA-E1-AT features automatic thermal shutdown that activates when junction temperature exceeds +150°C. The output is disabled until the die cools below the hysteresis threshold (~135°C), then resumes regulation. This protects against permanent damage during sustained overload or inadequate heatsinking on small PCB areas.
How does the dual-GND configuration in UPD120N18TA-E1-AT improve performance?
The dual-GND pins (Pins 3 and 4) in UPD120N18TA-E1-AT reduce effective thermal resistance and lower high-frequency ground impedance. This improves power supply rejection ratio (PSRR) above 100 kHz and minimizes ground bounce during fast load transients - critical for noise-sensitive audio and video signal chains where clean 1.8 V rails are essential.
UPD120N18TA-E1-AT 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:
- -
UPD120N18TA-E1-AT FAQ
1.How can I place an order for UPD120N18TA-E1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD120N18TA-E1-AT 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 UPD120N18TA-E1-AT reliable?
The price and inventory of UPD120N18TA-E1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD120N18TA-E1-AT is usually 5 days.
3.What payment methods are accepted for UPD120N18TA-E1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD120N18TA-E1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD120N18TA-E1-AT?
UPD120N18TA-E1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD120N18TA-E1-AT 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 UPD120N18TA-E1-AT?
For technical support, including UPD120N18TA-E1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD120N18TA-E1-AT requirements.
6.How does Aetrix verify that UPD120N18TA-E1-AT is sourced from the original manufacturer or authorized distributors?
All UPD120N18TA-E1-AT 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 UPD120N18TA-E1-AT meets industry standards.
7.What is the process for return or replacement of UPD120N18TA-E1-AT?
All UPD120N18TA-E1-AT units undergo pre-shipment inspection (PSI). If there is an issue with UPD120N18TA-E1-AT, 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 UPD120N18TA-E1-AT part is unused and in its original packaging.
Return procedure for UPD120N18TA-E1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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