My Inquiry
My Account
onsemi NCP612SQ31T1G
- Part No.:
- NCP612SQ31T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ31T1G.pdf
- Description:
- IC REG LINEAR 3.1V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,821
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP612SQ31T1G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator in SC70-5 package, delivering 100 mA output current with 3.1 V nominal output, 40 µA typical quiescent current, and 230 mV dropout at 100 mA - designed for battery-powered portable electronics requiring ultra-low power consumption and stable low-voltage rail generation.
For engineers reviewing the NCP612SQ31T1G datasheet, pinout, applications, or equivalent options, key selection criteria include output accuracy (±2.0%), thermal shutdown protection, enable-controlled standby mode, compatibility with low-ESR ceramic capacitors, and operation across −40 °C to +85 °C ambient temperature.
Technical Context
The NCP612SQ31T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal protection circuits (current limit and thermal shutdown). Its architecture enables stable regulation with minimal external components - only two 1.0 µF ceramic capacitors required for input and output decoupling.
It features an active-high enable input that places the device in ultra-low-power standby (<1 µA) when pulled low, and supports input voltages from 0 V to 6.0 V. Output voltage is factory-trimmed to 3.1 V with ±2.0% initial accuracy and 100 ppm/°C temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.1 V ±2.0% - ensures stable core/peripheral supply for 3.3 V–tolerant logic without external feedback resistors. |
| Max Output Current | 100 mA - sufficient for microcontrollers, sensors, and RF front-end biasing in compact portable systems. |
| Quiescent Current | 40 µA typical - extends battery life in always-on or low-duty-cycle applications like wearables and remote sensors. |
| Dropout Voltage | 230 mV at 100 mA - allows operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) sources. |
| Operating Temp Range | −40 °C to +85 °C - qualified for commercial and industrial portable equipment environments. |
| Input Voltage Range | 0 V to 6.0 V - compatible with common battery chemistries and intermediate supply rails. |
| Enable Threshold | VTH(HI) = 0.95 V, VTH(LO) = 0.3 V - ensures reliable logic-level control from 1.8 V or 3.3 V GPIOs. |
Pinout & Package
Package: SC70-5 (Case 419A), surface-mount, micro-miniature footprint (2.0 mm × 1.25 mm × 0.95 mm), Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - connects to battery or upstream regulator; requires local 1.0 µF decoupling capacitor. |
| 2 | Gnd | Power ground reference - must be low-impedance connection to minimize noise and ensure regulation stability. |
| 3 | Enable | Active-high digital control - pulls low to disable output and reduce total system current to <1 µA standby. |
| 4 | N/C | No internal connection - left unconnected; no routing or termination required. |
| 5 | Vout | Regulated 3.1 V output - supplies downstream circuitry; requires 1.0 µF ceramic capacitor for transient response and stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - reduces battery drain during sleep modes without compromising startup time or regulation. |
| Low dropout architecture | 230 mV @ 100 mA - enables efficient use of aging or partially discharged batteries in space-constrained designs. |
| Stable with ceramic capacitors | No ESR requirement - eliminates need for tantalum or aluminum electrolytic capacitors, lowering BOM cost and size. |
| Integrated thermal shutdown | Activates at ~160 °C junction temperature - prevents damage during overload or poor PCB thermal design. |
| Factory-trimmed output accuracy | ±2.0% over temperature - avoids post-assembly calibration and supports tight-tolerance analog/sensor subsystems. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG signal acquisition powered by coin-cell or thin-film battery. IC Role / Device Role / Timing Role: Primary 3.1 V LDO supplying analog front-end, ADC, and BLE SoC I/O domain. Use Value: 40 µA quiescent current extends operational life beyond 12 months on CR2032; SC70-5 footprint minimizes PCB area. |
Use Scenario: Battery-operated environmental sensor transmitting temperature/humidity via Bluetooth Low Energy. IC Role / Device Role / Timing Role: Regulated 3.1 V rail for sensor interface and BLE radio transceiver logic supply. Use Value: 230 mV dropout enables full utilization of 3.0 V cutoff from single LiPo cell; enable pin synchronizes power with transmission bursts. |
| Portable Barcode Scanner | Handheld Medical Diagnostic Tool |
|
Use Scenario: Compact scanner using laser diode and CMOS imager, powered by rechargeable Li-ion pack. IC Role / Device Role / Timing Role: Secondary LDO generating clean 3.1 V for image sensor and decoder ASIC. Use Value: Ripple rejection >60 dB at 100 kHz suppresses switching noise from main DC-DC converter; thermal shutdown protects during lens motor stall. |
Use Scenario: FDA Class II portable device performing point-of-care blood analysis with optical detection. IC Role / Device Role / Timing Role: Precision 3.1 V supply for photodiode amplifier chain and reference voltage generator. Use Value: ±2.0% output accuracy and 100 ppm/°C drift ensure consistent analog gain calibration across clinical operating temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent-current LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3102E/TT | 300 mA output, 1.6 µA quiescent current, SOT-23-3 package (no enable pin) | Lacks enable control and has higher max current - suitable where simpler control and higher load headroom are needed. | Choose if board layout lacks space for SC70-5 or if enable functionality is unnecessary. |
| TCS2117-3100CV | 150 mA output, 50 µA quiescent current, SC70-5 package, same 3.1 V output and enable pin | Higher quiescent current and slightly lower accuracy (±2.5%) - trade-off for broader input range (up to 6.5 V). | Prefer when input voltage may exceed 6.0 V or when minor IQ increase is acceptable for margin. |
Compared with MCP1700T-3102E/TT and TCS2117-3100CV, the NCP612SQ31T1G offers optimal balance of ultra-low IQ (40 µA), precise 3.1 V output (±2.0%), and integrated enable - making it ideal for compact, battery-sensitive designs where every microamp and millivolt matters.
Availability
NCP612SQ31T1G is available at Aetrix Electronics and suitable for wearable electronics, portable medical devices, and Bluetooth sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP612SQ31T1G 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, cloud, and consumer markets.
The NCP612SQ31T1G belongs to onsemi's NCP612 series of ultra-low-IQ linear regulators, engineered specifically for battery-powered portable equipment where extended runtime and minimal PCB footprint are critical design constraints.
FAQ
What is the maximum input voltage rating for the NCP612SQ31T1G?
The NCP612SQ31T1G supports an absolute maximum input voltage of 6.0 V. Exceeding this value risks permanent damage per the Absolute Maximum Ratings table. For reliable operation, Vin should remain within 0 V to 6.0 V, with recommended headroom of ≥1.0 V above Vout (i.e., ≥4.1 V) to maintain regulation under load and temperature variation.
Does the NCP612SQ31T1G require external compensation components?
No, the NCP612SQ31T1G is internally compensated and stable with 1.0 µF ceramic capacitors on both input and output. The datasheet explicitly states no minimum ESR requirement, eliminating the need for external resistors or capacitors in the feedback path - simplifying layout and reducing BOM count.
Can the NCP612SQ31T1G be used in automotive applications?
The NCP612SQ31T1G (NCP prefix) is rated for −40 °C to +85 °C ambient and is not AEC-Q100 qualified. For automotive use, onsemi offers the pin-compatible NCV612SQ31T2G variant (NCV prefix), which is AEC-Q100 qualified and rated to +125 °C junction temperature - the NCP612SQ31T1G itself is intended for commercial/industrial portable equipment.
What is the thermal shutdown threshold of the NCP612SQ31T1G?
The NCP612SQ31T1G incorporates internal thermal protection that activates at approximately 160 °C junction temperature. When triggered, the device shuts down the output until junction temperature falls below the hysteresis threshold (~140 °C), then automatically resumes regulation - protecting against sustained overload or inadequate PCB thermal relief.
How does the enable pin function on the NCP612SQ31T1G?
The enable pin (Pin 3) is active-high: pulling it ≥0.95 V turns on the regulator; pulling it ≤0.3 V disables output and reduces total current draw to <1 µA. If unused, it must be tied to Vin - floating the pin may cause erratic behavior due to noise susceptibility and undefined logic state.
NCP612SQ31T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
NCP612SQ31T1G FAQ
1.How can I place an order for NCP612SQ31T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ31T1G 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 NCP612SQ31T1G reliable?
The price and inventory of NCP612SQ31T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ31T1G is usually 5 days.
3.What payment methods are accepted for NCP612SQ31T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ31T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ31T1G?
NCP612SQ31T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ31T1G 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 NCP612SQ31T1G?
For technical support, including NCP612SQ31T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ31T1G requirements.
6.How does Aetrix verify that NCP612SQ31T1G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ31T1G 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 NCP612SQ31T1G meets industry standards.
7.What is the process for return or replacement of NCP612SQ31T1G?
All NCP612SQ31T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ31T1G, 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 NCP612SQ31T1G part is unused and in its original packaging.
Return procedure for NCP612SQ31T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP612SQ31T1G 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…
