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onsemi NCP612SQ33T1G
- Part No.:
- NCP612SQ33T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ33T1G.pdf
- Description:
- IC REG LINEAR 3.3V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,959
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Product details
Overview
NCP612SQ33T1G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator delivering 3.3 V at up to 100 mA, featuring ultra-low 40 µA quiescent current and 230 mV dropout at full load - designed for battery-powered portable electronics requiring stable, low-power supply regulation.
For engineers reviewing the NCP612SQ33T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SC70-5 package footprint, enable-controlled standby mode, ±2.0% output accuracy over −40 °C to +85 °C, and compatibility with low-ESR ceramic capacitors without stability compensation.
Technical Context
The NCP612SQ33T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current-limit protection in a single die. Its architecture enables stable operation with 1.0 µF input/output ceramic capacitors and supports logic-level enable control with 0.3 V (low) / 0.95 V (high) thresholds.
It operates across 1.5 V to 6.0 V input range while maintaining regulation down to 230 mV headroom at 100 mA output. The device is specified for industrial temperature range (−40 °C to +85 °C), with ground current tightly controlled at 40 µA (typ.) under no-load and 90 µA (max) across full load range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2.0% - ensures reliable power delivery to 3.3 V logic rails including microcontrollers and sensors. |
| Max Output Current | 100 mA - sufficient for low-power peripherals such as BLE radios, display drivers, and sensor interfaces. |
| Quiescent Current | 40 µA typical - extends battery life in always-on or sleep-mode applications like remote controls and wearables. |
| 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 - supports wide input sources including USB (5 V), coin cells, and regulated intermediate rails. |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and consumer portable equipment environments. |
| Package | SC70-5 - 2.0 × 1.25 mm surface-mount footprint ideal for space-constrained handheld designs. |
Pinout & Package
Supplied in the micro-miniature SC70-5 (SOT-353) package, the NCP612SQ33T1G uses a standardized 5-pin surface-mount outline with exposed pad not present. Pin 4 is the regulated output; Pin 1 accepts unregulated input; Pin 2 is ground; Pin 3 is active-high enable; Pin 4 is no-connect internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Unregulated input supply - must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin. |
| 2 | Gnd | Power ground reference - requires low-impedance PCB connection to minimize noise coupling and thermal rise. |
| 3 | Enable | Logic-controlled ON/OFF - pulled high to Vin for operation; pulled low to disable output and reduce quiescent draw to <1 µA. |
| 4 | N/C | No internal connection - left floating or grounded; no electrical function or routing required. |
| 5 | Vout | Regulated 3.3 V output - drives load directly; requires ≥1.0 µF ceramic output capacitor for transient stability and noise filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - enables multi-year battery life in IoT endpoints and energy-harvesting systems. |
| Low dropout voltage | 230 mV at 100 mA - maximizes usable battery capacity by minimizing voltage headroom loss. |
| Stable with ceramic capacitors | No ESR requirement - eliminates need for tantalum or aluminum electrolytic capacitors, reducing BOM cost and size. |
| Enable control with defined thresholds | 0.95 V turn-on / 0.3 V turn-off - compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Thermal and current protection | Internally limited - prevents damage during overload or ambient overheating without external circuitry. |
Applications
| Cellular Phone Power Management | Portable Medical Sensor Module |
|---|---|
Use Scenario: Regulating 3.3 V supply for baseband processor I/O and RF front-end bias in compact GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary LDO for low-noise, low-quiescent power domain isolated from noisy switching supplies. Use Value: Enables >200-hour standby time via 40 µA IQ and maintains clean 3.3 V rail despite battery voltage sag below 3.5 V. | Use Scenario: Providing stable 3.3 V to analog front-end and low-power MCU in wearable ECG patch. IC Role / Device Role / Timing Role: Precision voltage source for ADC reference and sensor excitation circuits. Use Value: ±2.0% output accuracy and <100 µVrms noise ensure sub-12-bit measurement integrity over full temperature range. |
| Handheld Barcode Scanner | Smart Home Motion Detector |
Use Scenario: Powering laser diode driver and image sensor in battery-operated retail scanners. IC Role / Device Role / Timing Role: Load-switched 3.3 V regulator activated only during scan cycles via Enable pin. Use Value: Reduces average system current by >95% during idle via enable-controlled shutdown, extending AA battery life to >12 months. | Use Scenario: Supplying PIR sensor signal chain and BLE SoC in battery-powered occupancy sensor. IC Role / Device Role / Timing Role: Always-on LDO supporting wake-on-motion with fast turn-on response (<1 ms). Use Value: 1.2 ms typical startup time and 230 mV dropout allow immediate wake-up from 3.0 V depleted batteries without brownout. |
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-3302E/MB | 400 mV dropout at 250 mA; 1.8–6.0 V input; 250 mA max output; SOT-23-3 package | Higher output current but larger footprint and no enable pin - unsuitable for space-constrained or enable-controlled designs | Select when higher load current is needed and enable control is unnecessary. |
| Torex XC6206P332MR-G | 150 mV dropout at 100 mA; 1.8–6.0 V input; 100 mA max; SOT-23-5 package with enable | Lower dropout and same enable functionality, but ±2.5% output tolerance vs. ±2.0% for NCP612SQ33T1G | Prefer when minimal dropout is critical and tighter output accuracy is not required. |
Compared with MCP1700T-3302E/MB and XC6206P332MR-G, the NCP612SQ33T1G offers the tightest output accuracy (±2.0%) in the smallest SC70-5 footprint with verified enable compatibility - making it optimal for miniaturized, battery-sensitive 3.3 V systems where precision and board area are constrained.
Availability
NCP612SQ33T1G is available at Aetrix Electronics and suitable for portable medical devices, handheld instrumentation, and wireless sensor nodes requiring stable component supply with long-lifecycle support and consistent parametric performance.
Supply support for NCP612SQ33T1G 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and intelligent power systems.
The NCP612SQ33T1G belongs to the NCP612 series of ultra-low-IQ LDO regulators engineered specifically for battery-powered portable equipment where extended runtime and small form factor are essential design constraints.
FAQ
What is the maximum input voltage rating for the NCP612SQ33T1G?
The NCP612SQ33T1G has an absolute maximum input voltage rating of 6.0 V. Exceeding this value may cause permanent damage. Operation is guaranteed across 1.5 V to 6.0 V input range, with dropout performance optimized above 3.3 V + 230 mV. The device includes internal protection against overvoltage stress within these limits.
Does the NCP612SQ33T1G require external components to operate stably?
Yes - the NCP612SQ33T1G requires a minimum 1.0 µF ceramic capacitor on both input (Vin) and output (Vout) pins, placed as close as possible to the device. These capacitors ensure stability, improve line/load transient response, and suppress noise. No ESR requirements or additional compensation networks are needed.
Can the NCP612SQ33T1G be used in automotive applications?
No - the NCP612SQ33T1G is rated for −40 °C to +85 °C and is not AEC-Q100 qualified. For automotive use, the pin-compatible NCV612SQ33T2G variant is specified for −40 °C to +125 °C and meets AEC-Q100 Grade 1 requirements with PPAP capability.
What is the typical startup time of the NCP612SQ33T1G after enabling?
The NCP612SQ33T1G achieves 90% of final output voltage in approximately 1.2 ms when enabled from shutdown, as measured with 1.0 µF output capacitance and 10 mA load. This fast turn-on supports responsive wake-up in duty-cycled systems such as motion-activated sensors and intermittent data loggers.
Is the NCP612SQ33T1G RoHS-compliant and lead-free?
Yes - the NCP612SQ33T1G is a Pb-free device per JEDEC J-STD-609, with "G" suffix indicating RoHS-compliant packaging. It conforms to EU RoHS Directive 2011/65/EU and is manufactured using lead-free solderable terminations and halogen-free molding compounds.
NCP612SQ33T1G 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):
- 0.38V @ 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)
NCP612SQ33T1G FAQ
1.How can I place an order for NCP612SQ33T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ33T1G 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 NCP612SQ33T1G reliable?
The price and inventory of NCP612SQ33T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ33T1G is usually 5 days.
3.What payment methods are accepted for NCP612SQ33T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ33T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ33T1G?
NCP612SQ33T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ33T1G 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 NCP612SQ33T1G?
For technical support, including NCP612SQ33T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ33T1G requirements.
6.How does Aetrix verify that NCP612SQ33T1G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ33T1G 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 NCP612SQ33T1G meets industry standards.
7.What is the process for return or replacement of NCP612SQ33T1G?
All NCP612SQ33T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ33T1G, 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 NCP612SQ33T1G part is unused and in its original packaging.
Return procedure for NCP612SQ33T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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