My Inquiry
My Account
onsemi NCP553SQ25T1
- Part No.:
- NCP553SQ25T1
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP553SQ25T1.pdf
- Description:
- IC REG LINEAR 2.5V 80MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,938
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP553SQ25T1 from onsemi is a fixed-output 2.5 V, 80 mA CMOS low-IQ NOCAP linear regulator in SC82-AB (SC70-4) package, featuring 2.8 µA typical quiescent current, ±2.0% output voltage accuracy, and operation without output capacitor - designed for battery-powered portable electronics requiring ultra-low standby power.
For engineers reviewing the NCP553SQ25T1 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (750 mV max at 80 mA), thermal shutdown protection, industrial temperature range (−40°C to +85°C), and compatibility with low-ESR ceramic capacitors down to 0.1 µF.
Technical Context
The NCP553SQ25T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal current/thermal limiting circuits - enabling stable regulation with no mandatory output capacitor. Its NOCAP architecture eliminates ESR dependency and supports zero-load operation.
Unlike the NCP552 variant, the NCP553SQ25T1 omits the enable pin (pin 4 is N/C), simplifying control logic in always-on applications while retaining identical electrical performance, thermal characteristics, and SC82-AB footprint compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2.0% over −40°C to +85°C - ensures stable core/sensor rail in portable devices. |
| Quiescent Current | 2.8 µA typical - enables multi-year battery life in standby mode for IoT sensors and wearables. |
| Dropout Voltage | 750 mV max at 80 mA - allows operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min). |
| Output Current | 80 mA continuous - sufficient for microcontrollers, RF transceivers, and analog front-ends in compact designs. |
| Thermal Shutdown | Activates at ~160°C - protects against PCB overheating during transient overload or poor layout. |
| Input Voltage Range | Up to 12 V - supports wide-input battery systems including 9 V PP3 and multi-cell configurations. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and consumer-grade portable equipment environments. |
Pinout & Package
Package: SC82-AB (SC70-4), 1.8 mm × 1.15 mm × 0.8 mm, 4-pin surface-mount, Pb-free compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power supply ground reference - must be low-impedance connection to minimize noise coupling. |
| 2 | Vin | Positive input supply - accepts 2.5 V to 12 V; requires local 1 µF decoupling capacitor. |
| 3 | Vout | Regulated 2.5 V output - stable without output capacitor; optional 0.1–10 µF ceramic improves load transient response. |
| 4 | N/C | No internal connection - left unconnected; not electrically tied to die or substrate. |
Key Features
| Feature | Design Value |
|---|---|
| NOCAP operation | Stable regulation with zero output capacitance - reduces BOM count and board area in space-constrained designs. |
| Ultra-low IQ | 2.8 µA typical - extends battery runtime in always-on monitoring applications such as smoke detectors and asset trackers. |
| PMOS pass element | Enables low dropout and eliminates reverse-current flow - prevents backfeed from Vout to Vin during shutdown. |
| ±2.0% output accuracy | Tight initial tolerance across temperature - avoids need for external trimming in precision analog subsystems. |
| Thermal & current limit | Integrated protection prevents damage during short-circuit or high-ambient conditions - eliminates need for external foldback circuitry. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) sensor node powered by coin cell. IC Role / Device Role / Timing Role: Primary 2.5 V supply for analog front-end and BLE SoC during sleep/active cycles. Use Value: 2.8 µA quiescent current enables >3-year battery life; NOCAP operation eliminates capacitor aging concerns in long-life medical devices. | Use Scenario: IR remote with motion-activated wake-up and sub-1-second transmit latency. IC Role / Device Role / Timing Role: Always-on 2.5 V rail for accelerometer and microcontroller RTC domain. Use Value: Stable 2.5 V output ensures consistent sensor biasing and low-jitter timing - critical for reliable wake-on-motion detection. |
| Industrial Handheld Scanners | Smart Home Doorbell Cameras |
Use Scenario: Rugged barcode scanner operating from rechargeable Li-ion with frequent deep discharge cycles. IC Role / Device Role / Timing Role: Main LDO for image sensor interface and decode processor core voltage. Use Value: 750 mV dropout allows full utilization of battery capacity down to 3.25 V - extends usable runtime per charge by >12%. | Use Scenario: Battery-powered video doorbell with PIR-triggered recording and Wi-Fi upload. IC Role / Device Role / Timing Role: Low-noise 2.5 V supply for microphone preamp and audio ADC. Use Value: 90 µVRMS output noise ensures clean audio capture without post-processing filtering overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/TT | 2.5 V, 250 mA, 1.6 µA IQ, SOT-23-3 package - higher current but no enable pin; 600 mV dropout. | Supports higher peak loads (e.g., camera flash LED drive); lacks NCP553SQ25T1's SC70-4 footprint. | Select when >80 mA output or lower dropout is required; verify PCB layout change for SOT-23-3. |
| TPS7A0225PDQNR | 2.5 V, 200 mA, 25 nA IQ, 0.5 µA typical, X2SON-4 - ultra-low IQ but 400 mV dropout and different pinout. | Better for multi-year battery life in ultra-low-duty-cycle IoT nodes; not drop-in due to pin assignment and thermal pad. | Choose for extreme energy harvesting or coin-cell applications where 2.8 µA is insufficient; requires new layout. |
Compared with MCP1700T-2502E/TT and TPS7A0225PDQNR, the NCP553SQ25T1 offers optimal balance of ultra-low IQ, proven NOCAP stability, SC70-4 size, and industrial temperature rating - making it ideal for cost-sensitive, space-constrained portable designs where 80 mA suffices.
Availability
NCP553SQ25T1 is available at Aetrix Electronics and suitable for portable medical sensors, wireless remote controls, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP553SQ25T1 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP553SQ25T1 belongs to the NCP55x NOCAP LDO family, engineered specifically for ultra-low-power portable electronics where minimal quiescent current, small footprint, and capacitor-free operation are essential design requirements.
FAQ
What is the maximum input voltage rating for the NCP553SQ25T1?
The NCP553SQ25T1 has an absolute maximum input voltage of 12 V. Exceeding this value risks permanent damage to the internal PMOS pass transistor and protection circuitry. For reliable operation, maintain Vin ≤ 12 V under all conditions including line transients and hot-swap events.
Does the NCP553SQ25T1 require an output capacitor to operate stably?
No, the NCP553SQ25T1 is a NOCAP regulator and operates stably without any output capacitor. It is fully compensated for zero-load and zero-capacitance conditions. An optional 0.1–10 µF ceramic capacitor may be added to improve load transient response, but it is not required for stability.
What is the dropout voltage of the NCP553SQ25T1 at 80 mA load current?
The dropout voltage of the NCP553SQ25T1 is 750 mV maximum at 80 mA load current and −40°C to +125°C junction temperature. At room temperature and 10 mA load, typical dropout is ~600 mV. This enables operation from a 3.25 V input while maintaining regulated 2.5 V output.
Is the NCP553SQ25T1 pin-compatible with the NCP552SQ25T1?
No, the NCP553SQ25T1 is not pin-compatible with the NCP552SQ25T1. While both share the same SC82-AB package and pins 1–3 (GND, Vin, Vout), pin 4 is Enable on the NCP552SQ25T1 but N/C on the NCP553SQ25T1. Interchanging them will result in unintended disable behavior or floating input issues.
What is the output voltage accuracy specification for the NCP553SQ25T1 over temperature?
The NCP553SQ25T1 guarantees ±2.0% output voltage accuracy over the full industrial temperature range of −40°C to +85°C at 10 mA load. At 25°C only, accuracy is tighter at ±1.5% (1.455 V to 1.545 V). This ensures predictable system-level voltage margins without calibration.
NCP553SQ25T1 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCP553SQ25T1 FAQ
1.How can I place an order for NCP553SQ25T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP553SQ25T1 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 NCP553SQ25T1 reliable?
The price and inventory of NCP553SQ25T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP553SQ25T1 is usually 5 days.
3.What payment methods are accepted for NCP553SQ25T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP553SQ25T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP553SQ25T1?
NCP553SQ25T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP553SQ25T1 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 NCP553SQ25T1?
For technical support, including NCP553SQ25T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP553SQ25T1 requirements.
6.How does Aetrix verify that NCP553SQ25T1 is sourced from the original manufacturer or authorized distributors?
All NCP553SQ25T1 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 NCP553SQ25T1 meets industry standards.
7.What is the process for return or replacement of NCP553SQ25T1?
All NCP553SQ25T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP553SQ25T1, 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 NCP553SQ25T1 part is unused and in its original packaging.
Return procedure for NCP553SQ25T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP553SQ25T1 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…
