My Inquiry
My Account
onsemi NCP612SQ28T1G
- Part No.:
- NCP612SQ28T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,606
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP612SQ28T1G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator delivering 2.8 V at up to 100 mA, featuring 40 µA typical quiescent current and 230 mV dropout at full load. It integrates PMOS pass transistor, thermal shutdown, current limiting, and operates across −40 °C to +85 °C - designed for battery-powered portable electronics requiring stable, ultra-low-power regulation.
For engineers reviewing the NCP612SQ28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SC70-5 package footprint, enable-controlled standby mode, ±2.0% output accuracy, ceramic-capacitor compatibility, and thermal performance in space-constrained handheld systems.
Technical Context
The NCP612SQ28T1G uses a PMOS pass transistor architecture enabling low dropout and near-zero gate-drive current, eliminating external bias requirements. Its internal error amplifier maintains regulation with 1.0 mV/V line regulation and 0.3–0.8 mV/mA load regulation over 1–100 mA output range.
Thermal protection activates at ~160 °C junction temperature, and the device achieves 100 ppm/°C output voltage temperature coefficient. Enable logic supports active-high control with 0.3 V (logic low) and 0.95 V (logic high) thresholds, allowing direct microcontroller interfacing without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.8 V nominal, ±2.0% accuracy over −40 °C to +85 °C ensures stable core/sensor rail in consumer portable devices. |
| Max Output Current | 100 mA continuous - sufficient for low-power microcontrollers, RF transceivers, and sensor signal chains. |
| Quiescent Current | 40 µA typical - enables multi-year battery life in always-on IoT endpoints and wearable 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. |
| Input Voltage Range | 0–6.0 V - compatible with common battery chemistries and intermediate supply rails without external clamping. |
| Enable Threshold | 0.95 V logic high / 0.3 V logic low - interfaces directly with 1.8 V or 3.3 V GPIO without pull-up resistors or level shifters. |
| Package | SC70-5 (SOT-353) - 2.0 × 1.25 × 0.95 mm footprint ideal for ultra-compact PCB layouts. |
Pinout & Package
SC70-5 surface-mount package (Case 419A), micro-miniature 5-pin outline with 0.65 mm pitch; thermally enhanced pad design supports up to 330 mW dissipation at 25 °C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts 0–6.0 V; requires local 1.0 µF decoupling capacitor placed adjacent to pin. |
| 2 | Gnd | Power ground reference - must be connected to low-impedance system ground plane to ensure noise immunity and thermal stability. |
| 3 | Enable | Active-high digital control - pulls device into 0.03 µA shutdown when ≤0.3 V; connect to Vin if unused. |
| 4 | N/C | No internal connection - electrically isolated; no routing or soldering required. |
| 5 | Vout | Regulated 2.8 V output - supports ceramic or tantalum capacitors ≥1.0 µF; ESR up to 5 Ω permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - reduces standby power loss by >90% vs. standard LDOs, critical for coin-cell and energy-harvesting applications. |
| Low dropout voltage | 230 mV @ 100 mA - maximizes usable battery capacity and extends runtime in single-supply systems. |
| Ceramic capacitor stability | Stable with 1.0 µF ceramic output cap (no ESR requirement) - eliminates need for larger, costlier tantalum alternatives. |
| Integrated protection | Current limit, thermal shutdown, and ESD robustness (2 kV HBM) - reduces BOM count and improves field reliability. |
| Precision output accuracy | ±2.0% over temperature and load - ensures consistent performance for ADC references, sensor biasing, and logic I/O rails. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery and low-power analog front-end. IC Role / Device Role / Timing Role: Primary 2.8 V supply for op-amps, ADC, and BLE radio during active sensing and transmission cycles. Use Value: 40 µA quiescent current enables >3-year battery life; 230 mV dropout preserves usable voltage down to 3.03 V battery voltage. |
Use Scenario: Sub-GHz RF remote with intermittent button-press wake-up and short transmit bursts. IC Role / Device Role / Timing Role: Regulated 2.8 V rail for MCU core, RF transceiver, and EEPROM during active states. Use Value: Enable pin allows MCU to shut down NCP612SQ28T1G between events, reducing average system current to <1 µA. |
| Smart Wearable Displays | Industrial Handheld Scanners |
|
Use Scenario: OLED display module powered by rechargeable Li-poly battery in fitness tracker. IC Role / Device Role / Timing Role: Stable 2.8 V supply for display driver IC and touch controller interface. Use Value: ±2.0% output accuracy prevents brightness drift; SC70-5 package fits tight bezel constraints without compromising thermal margin. |
Use Scenario: Ruggedized barcode scanner operating in variable-temperature warehouse environments. IC Role / Device Role / Timing Role: Main 2.8 V rail for ARM Cortex-M4 MCU, laser diode driver, and image sensor interface. Use Value: −40 °C to +85 °C operation ensures reliability across seasonal storage and field use; 100 ppm/°C TC minimizes sensor calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2802E/MB | 3.0 µA IQ (lower), 600 mV dropout @ 250 mA, SOT-23-3 package (no enable) | Lacks enable pin and thermal shutdown; limited to ultra-low-IQ sleep-only roles | Choose only if enable control and protection features are unnecessary and dropout tolerance >600 mV is acceptable. |
| TLC7701QDBVRQ1 | 2.5 µA IQ, 400 mV dropout @ 100 mA, automotive AEC-Q100 Grade 1, SOT-23-5 | Higher dropout, wider temp range (−40 °C to +125 °C), but lacks SC70-5 size advantage | Prefer for automotive under-hood use where extended temperature and qualification outweigh footprint constraints. |
Compared with MCP1700T-2802E/MB and TLC7701QDBVRQ1, the NCP612SQ28T1G uniquely balances ultra-low IQ (40 µA), low dropout (230 mV), enable functionality, and SC70-5 miniaturization - making it optimal for compact, battery-sensitive consumer portables where all three traits are simultaneously required.
Availability
NCP612SQ28T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless remote controls, smart wearable displays, and industrial handheld scanners requiring stable component supply with long-lifecycle support.
Supply support for NCP612SQ28T1G 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, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP612SQ28T1G belongs to the NCP612 series of ultra-low-IQ CMOS LDO regulators, engineered specifically for battery-powered portable electronics demanding minimal standby consumption and small-footprint integration.
FAQ
What is the maximum input voltage rating for the NCP612SQ28T1G?
The NCP612SQ28T1G has an absolute maximum input voltage of 6.0 V. Exceeding this rating may cause permanent damage. For reliable operation, maintain Vin within 0–6.0 V, with recommended headroom of ≥1.0 V above Vout (i.e., ≥3.8 V) to ensure regulation across load and temperature variations.
Does the NCP612SQ28T1G require an external pull-up resistor on the Enable pin?
No - the NCP612SQ28T1G does not require an external pull-up on the Enable pin. If unused, the Enable pin must be connected directly to Vin to guarantee normal operation. Internal circuitry ensures proper biasing without external components, simplifying layout and reducing BOM count.
Can the NCP612SQ28T1G operate with a 1.0 µF ceramic capacitor on the output?
Yes - the NCP612SQ28T1G is explicitly designed for stability with 1.0 µF ceramic output capacitors, including X5R and X7R dielectrics. No minimum ESR is required, and the device remains stable across ESR values from a few milliohms up to 5.0 Ω, enabling flexible, low-cost capacitor selection.
What is the thermal shutdown threshold of the NCP612SQ28T1G?
The NCP612SQ28T1G incorporates internal thermal protection that activates at approximately 160 °C junction temperature. Once triggered, the regulator shuts down until junction temperature falls below the hysteresis threshold (~140 °C), preventing damage during sustained overload or poor PCB thermal design.
Is the NCP612SQ28T1G pin-compatible with other variants in the NCP612 family?
Yes - all NCP612 variants (e.g., NCP612SQ15T1G, NCP612SQ33T1G) share identical SC70-5 pinout and electrical interface. Only the output voltage differs; no PCB redesign is needed when substituting between fixed-voltage versions within the same temperature grade and package.
NCP612SQ28T1G 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):
- 2.8V
- 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)
NCP612SQ28T1G FAQ
1.How can I place an order for NCP612SQ28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ28T1G 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 NCP612SQ28T1G reliable?
The price and inventory of NCP612SQ28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ28T1G is usually 5 days.
3.What payment methods are accepted for NCP612SQ28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ28T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ28T1G?
NCP612SQ28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ28T1G 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 NCP612SQ28T1G?
For technical support, including NCP612SQ28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ28T1G requirements.
6.How does Aetrix verify that NCP612SQ28T1G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ28T1G 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 NCP612SQ28T1G meets industry standards.
7.What is the process for return or replacement of NCP612SQ28T1G?
All NCP612SQ28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ28T1G, 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 NCP612SQ28T1G part is unused and in its original packaging.
Return procedure for NCP612SQ28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP612SQ28T1G 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…
