My Inquiry
My Account
onsemi NCP512SQ33T1G
- Part No.:
- NCP512SQ33T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP512SQ33T1G.pdf
- Description:
- IC REG LINEAR 3.3V 80MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,627
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP512SQ33T1G from onsemi is a fixed-output CMOS low-quiescent-current linear voltage regulator delivering 3.3 V at up to 80 mA, featuring 40 µA typical quiescent current, 180 mV dropout at 80 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring stable low-power biasing.
For engineers reviewing the NCP512SQ33T1G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC-88A (SOT-353) package compatibility, enable-controlled standby mode, and ceramic-capacitor stability in space-constrained handheld systems.
Technical Context
The NCP512SQ33T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current-limit protection - enabling stable regulation with minimal external components. Its enable input provides logic-level control (VTH = 0.3 V low / 1.3 V high), and it operates across −40 °C to +85 °C ambient without requiring minimum load or specific ESR output capacitors.
Designed for low-noise, low-dissipation operation, the device achieves 180 mV dropout at full 80 mA load and 3.3 V output, supports input voltages from 3.3 V to 6.0 V, and delivers 180 µVRMS output noise (100 Hz–100 kHz) with 1 µF ceramic output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2.0% - ensures reliable microcontroller core/buffer rail compliance under temperature and load variation. |
| Quiescent Current | 40 µA typical - enables multi-year battery life in always-on sensor nodes or standby circuits. |
| Dropout Voltage | 180 mV at 80 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 industrial-grade portable instrumentation and consumer handhelds. |
| Input Voltage Range | 0 V to 6.0 V - accommodates unregulated battery inputs with headroom for transient spikes. |
| Output Noise | 180 µVRMS (100 Hz–100 kHz) - suitable for analog front-ends and RF power management without added filtering. |
| Ripple Rejection | 50 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
Pinout & Package
The NCP512SQ33T1G is housed in the SC-88A (SOT-353) surface-mount package - a 5-pin, 2.0 mm × 2.1 mm × 0.9 mm micro-miniature outline compatible with standard 0.65 mm pitch reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vin | Positive input supply | Accepts 0–6.0 V unregulated source; requires local 1 µF decoupling per layout guidelines. |
| 2 - GND | Power ground reference | Low-impedance return path for input/output currents; must be routed with wide copper to minimize noise coupling. |
| 3 - Enable | Logic-controlled on/off input | Pulled high to Vin for regulation; pulled low (<0.3 V) disables output and reduces IQ to ≤0.1 µA. |
| 4 - N/C | No internal connection | Unbonded pad - electrically isolated; no routing or soldering required. |
| 5 - Vout | Regulated 3.3 V output | Delivers up to 80 mA with <±2.0% accuracy; stable with 1 µF ceramic capacitor (no ESR requirement). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery runtime in IoT edge sensors and wearable devices operating >1 year on coin cells. |
| Low-dropout PMOS architecture | 180 mV dropout at 80 mA - maintains regulation down to 3.48 V input for 3.3 V output, maximizing usable battery capacity. |
| Ceramic-capacitor stability | Stable with 1 µF X5R/X7R ceramics - eliminates need for tantalum or electrolytic caps, reducing BOM cost and board area. |
| Enable-controlled shutdown | Sub-µA disable current - allows system-level power sequencing and deep-sleep modes without external FETs. |
| Integrated protection | Thermal shutdown (>160 °C) and current limit (~150–400 mA) - prevents damage during overload or PCB thermal runaway. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) with BLE radio and analog biosensor front-end. IC Role / Device Role / Timing Role: Primary 3.3 V bias rail for MCU, RF transceiver, and ADC reference. Use Value: 40 µA IQ enables >2-year operation on CR2032; 180 mV dropout preserves runtime as battery discharges to 3.48 V. |
Use Scenario: Sub-GHz remote control for smart home hubs with motion-triggered wake-up. IC Role / Device Role / Timing Role: Always-on 3.3 V supply for accelerometer and RF SoC in ultra-low-power sleep state. Use Value: Enable pin allows MCU to gate power to RF section only during transmission, cutting system IQ to sub-µA levels. |
| Handheld Test Meters | Industrial Barcode Scanners |
|
Use Scenario: Battery-powered multimeter with LCD display and precision analog measurement circuitry. IC Role / Device Role / Timing Role: Clean 3.3 V rail for op-amps, reference ICs, and microcontroller peripherals. Use Value: 180 µVRMS output noise avoids signal corruption in 16-bit ADC measurements; ±2.0% accuracy meets Class II meter specs. |
Use Scenario: Ruggedized handheld scanner using laser diode driver and CMOS image sensor. IC Role / Device Role / Timing Role: Secondary regulated supply for image sensor interface and USB PHY logic. Use Value: SC-88A package fits tight PCB layouts; 50 dB ripple rejection isolates sensor data from noisy DC/DC converter inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/MB | 4 µA IQ, 6 V max input, 250 mV dropout at 250 mA - higher current but larger SOT-23-3 package. | Preferred for higher-load designs (>100 mA) where ultra-low IQ dominates over size constraints. | Select when >250 mA output capability is needed and SC-88A footprint is not mandatory. |
| Torex XC6206P332MR-G | 1.0 µA IQ, 6.0 V max input, 350 mV dropout at 80 mA - lower IQ but higher dropout and same SC-88A package. | Better for multi-year coin-cell applications where dropout margin is less critical than standby current. | Choose when longest possible shelf life is required and input voltage remains ≥3.65 V under load. |
Compared with MCP1700T-3302E/MB and XC6206P332MR-G, the NCP512SQ33T1G offers the optimal balance of ultra-low IQ, low dropout, and micro-package size - making it ideal for space- and battery-limited 3.3 V systems where 80 mA peak load suffices.
Availability
NCP512SQ33T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless remote controls, handheld test meters, and industrial barcode scanners requiring stable component supply with consistent lead times and long-term sourcing assurance.
Supply support for NCP512SQ33T1G 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 NCP512SQ33T1G belongs to onsemi's NCP512 series of ultra-low-IQ LDO regulators - engineered specifically for battery-powered portable equipment where extended runtime and minimal PCB footprint are critical design priorities.
FAQ
What is the maximum input voltage rating for the NCP512SQ33T1G?
The NCP512SQ33T1G has an absolute maximum input voltage (VIN) of 6.0 V, as specified in the Maximum Ratings table. Operation above this level risks permanent damage. For reliable 3.3 V output, the recommended input range is 3.3 V to 6.0 V - ensuring sufficient headroom for dropout while avoiding overstress conditions.
Does the NCP512SQ33T1G require an external pull-up resistor on the Enable pin?
No, the NCP512SQ33T1G does not require an external pull-up on the Enable pin. If unused, the Enable pin must be directly connected to Vin to ensure regulation. The device specifies VTH(HI) = 1.3 V minimum for turn-on, and internal biasing eliminates need for external resistors - simplifying layout and reducing component count.
Can the NCP512SQ33T1G operate with a 1 µF ceramic output capacitor?
Yes, the NCP512SQ33T1G is explicitly characterized and guaranteed stable with a 1.0 µF ceramic capacitor (X5R/X7R dielectric), as confirmed in the Applications Information section. Unlike many LDOs, it imposes no minimum ESR requirement - enabling use of low-cost, small-footprint MLCCs without risk of oscillation.
What is the thermal shutdown threshold of the NCP512SQ33T1G?
The NCP512SQ33T1G incorporates internal thermal protection that activates at approximately 160 °C junction temperature, turning off the output to prevent damage. Recovery occurs automatically once the junction cools below the hysteresis threshold (~140 °C). This feature is independent of ambient temperature and ensures robustness during sustained overload or poor PCB thermal design.
Is the NCP512SQ33T1G RoHS-compliant and Pb-free?
Yes, the NCP512SQ33T1G is a Pb-free device, as explicitly stated in the Features section and confirmed by the "G" suffix and "Pb-Free Package" notation in the Ordering Information table. It complies with RoHS Directive 2011/65/EU and meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for SC-88A packaging.
NCP512SQ33T1G 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- 50dB (1kHz)
- 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)
NCP512SQ33T1G FAQ
1.How can I place an order for NCP512SQ33T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP512SQ33T1G 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 NCP512SQ33T1G reliable?
The price and inventory of NCP512SQ33T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP512SQ33T1G is usually 5 days.
3.What payment methods are accepted for NCP512SQ33T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP512SQ33T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP512SQ33T1G?
NCP512SQ33T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP512SQ33T1G 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 NCP512SQ33T1G?
For technical support, including NCP512SQ33T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP512SQ33T1G requirements.
6.How does Aetrix verify that NCP512SQ33T1G is sourced from the original manufacturer or authorized distributors?
All NCP512SQ33T1G 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 NCP512SQ33T1G meets industry standards.
7.What is the process for return or replacement of NCP512SQ33T1G?
All NCP512SQ33T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP512SQ33T1G, 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 NCP512SQ33T1G part is unused and in its original packaging.
Return procedure for NCP512SQ33T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP512SQ33T1G 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…
