My Inquiry
My Account
onsemi NCV553SQ50T1
- Part No.:
- NCV553SQ50T1
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCV553SQ50T1.pdf
- Description:
- IC REG LINEAR 5V 80MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,847
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV553SQ50T1 from onsemi is an automotive-grade 5.0 V fixed-output NOCAP low-dropout linear regulator with ultra-low quiescent current (2.8 µA typical), ±2.0% output voltage accuracy, and operation across −40°C to +125°C. It uses a PMOS pass transistor, requires no output capacitor for stability, and delivers up to 80 mA output current-designed for battery-powered infotainment modules and body control units where standby power minimization is critical.
For engineers reviewing the NCV553SQ50T1 datasheet, pinout, applications, or equivalent options, key selection considerations include its SC82-AB (SC70-4) 4-pin package, N/C pin configuration, dropout voltage of 470 mV at 80 mA, thermal shutdown protection, and compatibility with ceramic decoupling capacitors down to 0.1 µF.
Technical Context
The NCV553SQ50T1 implements a PMOS-based LDO architecture with internal voltage reference, error amplifier, and thermal/overcurrent protection circuits. It operates without mandatory output capacitance due to inherent stability across ceramic capacitor ESR ranges from near-zero to 10 Ω.
Unlike the NCP552 variant, it lacks an enable pin-Pin 4 is No Connect-and relies on input voltage control for ON/OFF sequencing. Its 5.0 V output is trimmed at wafer level to ±2.0% over temperature and load, with line regulation of 4.5 mV/V and load regulation of 0.8 mV/mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2.0% over −40°C to +125°C; enables direct replacement of legacy 5 V logic rails without external feedback. |
| Quiescent Current | 2.8 µA typical at 10 mA load; reduces battery drain in always-on automotive modules during sleep mode. |
| Dropout Voltage | 470 mV max at 80 mA and +125°C; supports operation from 5.47 V input in high-temp engine bay environments. |
| Output Current | 80 mA continuous; sufficient for powering microcontrollers, CAN transceivers, and sensor interfaces in compact ECUs. |
| Thermal Shutdown | Activates at ~160°C junction temperature; protects against sustained overload or poor PCB thermal design. |
| Input Voltage Range | Up to 12 V; compatible with 12 V automotive battery systems including load dump transients when paired with external clamping. |
| Noise Performance | 90 µVRMS (20 Hz–100 kHz); suitable for noise-sensitive analog sensors and ADC references. |
Pinout & Package
NCV553SQ50T1 is housed in the SC82-AB (SC70-4) surface-mount package-1.8 mm × 1.15 mm × 0.8 mm, 4-terminal, lead-free, moisture-sensitive level 1. The package features a single exposed thermal pad (not electrically connected) and is optimized for space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power supply ground reference; must be low-impedance connection to minimize noise coupling and ensure regulation accuracy. |
| 2 | Vin | Positive input supply pin; accepts 2.8 V to 12 V; requires local 1 µF ceramic decoupling per layout guidelines. |
| 3 | Vout | Regulated 5.0 V output; capable of sourcing up to 80 mA; stable without output capacitor but benefits from ≥0.1 µF for transient response. |
| 4 | N/C | No internal connection; must remain unconnected-no pull-up, pull-down, or routing to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| NOCAP Stability | Operates stably without output capacitor-reduces BOM count, board area, and cost in space-limited modules. |
| Automotive Qualification | AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient); meets PPAP requirements for production automotive electronics. |
| Ultra-Low IQ | 2.8 µA typical quiescent current enables >10-year battery life in always-on telematics and door module applications. |
| PMOS Pass Device | Enables low dropout and eliminates reverse current flow-critical for multi-rail systems with shared grounds. |
| Ceramic Capacitor Compatible | Supports X5R/X7R MLCCs from 0.1 µF to 10 µF; eliminates need for higher-ESR tantalum or aluminum electrolytics. |
Applications
| Infotainment Power Rail | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powering MCU, display driver, and audio codec in dashboard head units with strict 24/7 standby current limits. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying core logic and interface circuitry; replaces discrete regulators requiring external compensation. Use Value: 2.8 µA IQ ensures <1 µA system-level standby draw when MCU is in deep sleep-meeting OEM parasitic drain specs. |
Use Scenario: Regulating 5 V for LIN transceivers, door lock actuators, and interior lighting controllers in vehicle door modules. IC Role / Device Role / Timing Role: Local point-of-load regulator with integrated thermal protection-eliminates need for external thermal monitoring. Use Value: 470 mV dropout at 80 mA allows operation from degraded 6 V battery during cranking, maintaining communication integrity. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Interface |
|
Use Scenario: Supplying GPS/GNSS receiver, cellular modem, and secure element in connected car TCU modules. IC Role / Device Role / Timing Role: Low-noise 5 V source for RF and crypto subsystems; leverages 90 µVRMS noise performance. Use Value: Stable regulation across −40°C to +125°C ensures GNSS lock retention during extreme ambient cycling without recalibration. |
Use Scenario: Powering image signal processors and radar transceiver bias circuits in camera/radar fusion ECUs. IC Role / Device Role / Timing Role: Clean 5 V rail for analog front-end and clock distribution; benefits from NOCAP architecture's fast load transient response. Use Value: 0.8 mV/mA load regulation minimizes voltage droop during burst-mode sensor readouts-preserving ADC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170ASN50T1G | Higher IQ (1.5 µA typ), lower dropout (250 mV @ 150 mA), SOT-23-5 with enable pin. | Requires PCB layout change for 5-pin footprint and enable signal routing; better for active-controlled power domains. | Select if system requires dynamic ON/OFF control and higher output current capability beyond 80 mA. |
| TLV73350PDBVR | Lower IQ (350 nA), same 5 V output, SOT-23-5 with enable, AEC-Q100 Grade 2 (−40°C to +105°C). | Limited to 105°C ambient; not rated for under-hood use; requires enable signal management. | Choose only for cabin-mounted modules where ultra-low IQ outweighs temperature range limitations. |
Compared with NCV553SQ50T1, NCV8170ASN50T1G offers higher current and active control at the cost of added complexity, while TLV73350PDBVR trades automotive temperature range for nanoampere quiescent current-neither is pin-compatible, and both require layout revision.
Availability
NCV553SQ50T1 is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, and telematics units requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for NCV553SQ50T1 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCV553SQ50T1 belongs to onsemi's NOCAP LDO family-engineered specifically for automotive electronics demanding ultra-low quiescent current, capacitorless operation, and extended temperature reliability without sacrificing regulation precision.
FAQ
What is the maximum input voltage rating for the NCV553SQ50T1?
The NCV553SQ50T1 has a maximum input voltage rating of 12 V, as specified in its Absolute Maximum Ratings table. This allows direct connection to standard 12 V automotive battery systems, though sustained operation above 6.5 V at full load requires attention to thermal dissipation due to the device's 400 °C/W junction-to-ambient thermal resistance in the SC82-AB package.
Does the NCV553SQ50T1 require an output capacitor to function?
No, the NCV553SQ50T1 is designed as a NOCAP regulator and operates stably without any output capacitor. However, adding a ≥0.1 µF ceramic capacitor improves load transient response and noise rejection-especially important in automotive applications with high di/dt switching loads. Layout best practices still recommend placing input and optional output capacitors as close as possible to the device pins.
What does the "SQ" suffix indicate in NCV553SQ50T1?
The "SQ" suffix in NCV553SQ50T1 denotes the SC82-AB (SC70-4) package type-a 4-pin, micro-miniature surface-mount outline with dimensions 1.8 mm × 1.15 mm. This is confirmed in the Ordering Information table and Package Dimensions section of the datasheet (Case 419C-02), and distinguishes it from other variants offered in different packages such as SOT-23 or DFN.
Is the NCV553SQ50T1 pin-compatible with the NCP553SQ50T1?
Yes, the NCV553SQ50T1 and NCP553SQ50T1 share identical pinout (GND-Vin-Vout-N/C), package (SC82-AB), and electrical specifications except for temperature range and qualification. The NCV version extends operation to +125°C ambient and is AEC-Q100 qualified, making it a drop-in replacement in automotive designs-but not vice versa for high-temp applications.
What is the output voltage accuracy of the NCV553SQ50T1 over temperature?
The NCV553SQ50T1 maintains output voltage accuracy of ±2.0% over its full operating ambient temperature range of −40°C to +125°C at 10 mA load, as verified in the Electrical Characteristics table. At +125°C, the 5.0 V nominal output remains within 4.85 V to 5.15 V, ensuring reliable logic-level compatibility across all automotive environmental conditions.
NCV553SQ50T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NOCAP™
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.8V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 6 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCV553SQ50T1 FAQ
1.How can I place an order for NCV553SQ50T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV553SQ50T1 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 NCV553SQ50T1 reliable?
The price and inventory of NCV553SQ50T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV553SQ50T1 is usually 5 days.
3.What payment methods are accepted for NCV553SQ50T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV553SQ50T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV553SQ50T1?
NCV553SQ50T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV553SQ50T1 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 NCV553SQ50T1?
For technical support, including NCV553SQ50T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV553SQ50T1 requirements.
6.How does Aetrix verify that NCV553SQ50T1 is sourced from the original manufacturer or authorized distributors?
All NCV553SQ50T1 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 NCV553SQ50T1 meets industry standards.
7.What is the process for return or replacement of NCV553SQ50T1?
All NCV553SQ50T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCV553SQ50T1, 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 NCV553SQ50T1 part is unused and in its original packaging.
Return procedure for NCV553SQ50T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV553SQ50T1 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
