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onsemi NCP612SQ33T1
- Part No.:
- NCP612SQ33T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ33T1.pdf
- Description:
- IC REG LINEAR 3.3V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,617
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Product details
Overview
NCP612SQ33T1 from onsemi is a 3.3 V fixed-output, 100 mA CMOS low-dropout linear regulator in SC70−5 package, featuring 40 µA typical quiescent current, 230 mV dropout at 100 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring ultra-low standby power.
For engineers reviewing the NCP612SQ33T1 datasheet, pinout, applications, or equivalent options, key selection criteria include its SC70−5 footprint compatibility, enable-controlled shutdown capability, ceramic-capacitor stability, and −40°C to +85°C industrial operating range.
Technical Context
The NCP612SQ33T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection - enabling stable regulation with minimal external components. Its enable input provides logic-level control (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V) for system-level power sequencing.
Designed for low-noise, low-power operation, it delivers 100 µVRMS output noise (100 Hz–100 kHz), >50 dB ripple rejection at 1 kHz, and maintains regulation down to 200 mV input–output differential across temperature and load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2.0% (ensures reliable MCU/core logic supply under load and temperature variation) |
| Max Output Current | 100 mA (supports low-power microcontrollers, sensors, and RF front-ends) |
| Quiescent Current | 40 µA typical (enables multi-year battery life in always-on IoT endpoints) |
| Dropout Voltage | 230 mV at 100 mA (allows operation from single-cell Li-ion or 3.6 V supply with margin) |
| Operating Temp | −40°C to +85°C (qualified for industrial and consumer portable equipment environments) |
| Input Voltage Range | 0 V to 6.0 V (compatible with common battery and intermediate rail sources) |
| Output Noise | 100 µVRMS (100 Hz–100 kHz; suitable for noise-sensitive analog circuits) |
Pinout & Package
Package: SC70−5 (Case 419A−02), 1.8 mm × 1.35 mm × 0.9 mm, surface-mount, Pb-free compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts up to 6.0 V; requires local 1.0 µF decoupling |
| 2 | Gnd | Power ground reference - must be low-impedance connection to minimize noise |
| 3 | Enable | Active-high digital control - pulls low to disable regulator (IQ < 0.03 µA) |
| 4 | N/C | No internal connection - left unconnected or grounded per layout best practice |
| 5 | Vout | Regulated 3.3 V output - supports ceramic or tantalum capacitors ≥1.0 µF |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 40 µA typical enables >10-year shelf life in coin-cell–powered devices |
| Ceramic-capacitor stable | No ESR requirement - simplifies BOM and reduces board area vs. electrolytic/tantalum solutions |
| Enable-controlled shutdown | Reduces total system standby current to sub-µA level when paired with host MCU GPIO |
| Thermal & current protection | Internal foldback current limit and thermal shutdown at ~160°C prevent damage during overload or poor heatsinking |
| High PSRR | >50 dB at 1 kHz - suppresses switching noise from adjacent DC/DC converters |
Applications
| Wearable Health Sensors | Bluetooth LE Modules |
|---|---|
|
Use Scenario: Continuous ECG/PPG monitoring in wrist-worn devices powered by CR2032 or rechargeable Li-ion. IC Role / Device Role / Timing Role: Primary 3.3 V supply for ultra-low-power MCU, analog front-end, and BLE radio. Use Value: 40 µA quiescent current extends battery runtime beyond 2 years; SC70−5 footprint minimizes PCB real estate. |
Use Scenario: Compact Bluetooth 5.0 module powering sensor hub and wireless transceiver in smart home nodes. IC Role / Device Role / Timing Role: Clean, regulated 3.3 V rail for RF section and digital baseband, synchronized via enable pin with host wake-up events. Use Value: 230 mV dropout allows direct use of partially discharged 3.6 V Li-ion cells; 100 µVRMS noise prevents RF desense. |
| Industrial Handheld Scanners | Portable Medical Diagnostic Tools |
|
Use Scenario: Rugged barcode scanner operating from dual AA alkaline batteries with intermittent high-current laser/decoder bursts. IC Role / Device Role / Timing Role: Main system regulator delivering stable 3.3 V during pulsed 80 mA loads while maintaining low sleep current. Use Value: Load regulation of 0.3 mV/mA ensures <10 mV output shift during 1–100 mA transients; −40°C to +85°C rating supports field deployment. |
Use Scenario: Battery-operated point-of-care ultrasound or glucose meter requiring clinical-grade signal integrity. IC Role / Device Role / Timing Role: Low-noise analog supply for ADC reference and op-amp biasing, isolated from digital switching noise. Use Value: 100 µVRMS output noise and >50 dB PSRR preserve SNR in sensitive analog signal chains without additional filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/MB | 300 mA rated, 1.6 µA IQ, SOT-23-5 package (larger than SC70−5), 600 mV dropout at 250 mA | Better for higher-current loads but occupies 2.9× larger PCB area; lower IQ benefits ultra-long-life applications | Choose if >100 mA output or sub-µA IQ is critical; avoid if SC70−5 footprint is mandatory |
| Torex XC6206P332MR-G | 150 mA rated, 1 µA IQ, SOT-23-5, 350 mV dropout at 100 mA, no enable pin | Lacks enable control - requires external FET or system-level power gating; smaller IQ but higher dropout limits low-Vin use | Select when absolute minimum standby current outweighs need for active enable; verify dropout margin with your Vin min |
Compared with MCP1700T-3302E/MB and XC6206P332MR-G, the NCP612SQ33T1 offers optimal balance of SC70−5 size, 100 mA capability, enable functionality, and 40 µA IQ - making it ideal for space-constrained, battery-sensitive designs where moderate load current and precise control are required.
Availability
NCP612SQ33T1 is available at Aetrix Electronics and suitable for wearable health sensors, Bluetooth LE modules, and industrial handheld scanners requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for NCP612SQ33T1 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, and sensing technologies for automotive, industrial, and consumer markets.
The NCP612SQ33T1 belongs to onsemi's NCP612 series of ultra-low-IQ LDO regulators - engineered specifically for extended-battery-life portable electronics where minimal quiescent power and small form factor are essential design constraints.
FAQ
What is the maximum input voltage rating for the NCP612SQ33T1?
The NCP612SQ33T1 has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable long-term performance, keep Vin ≤ 6.0 V under all conditions including transient spikes - especially important when used with unregulated battery inputs or upstream switching regulators.
Does the NCP612SQ33T1 require an external capacitor on the Enable pin?
No, the NCP612SQ33T1 does not require an external capacitor on the Enable pin. The Enable input is CMOS-compatible with TTL logic thresholds (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V); it draws negligible current and may be driven directly from an MCU GPIO. If unused, connect Enable to Vin to ensure always-on operation.
Can the NCP612SQ33T1 be used with a 10 µF ceramic output capacitor?
Yes, the NCP612SQ33T1 is stable with ceramic output capacitors ranging from 1.0 µF to ≥10 µF - including X5R/X7R types. Larger values improve load transient response and noise suppression. No ESR requirements apply, unlike older LDO architectures, making 10 µF ceramic a valid and recommended choice for demanding applications.
What is the thermal shutdown threshold of the NCP612SQ33T1?
The NCP612SQ33T1 incorporates internal thermal protection that activates at approximately 160°C junction temperature. When triggered, the device shuts down the output until the die cools below the hysteresis threshold (~140°C). This safeguard prevents irreversible damage during sustained overload or inadequate PCB thermal relief.
Is the NCP612SQ33T1 pin-compatible with other variants in the NCP612 family?
Yes, all NCP612 variants (e.g., NCP612SQ15T1, NCP612SQ30T1) share identical SC70−5 pinout and footprint. Only the output voltage and marking code differ - enabling drop-in replacement across 1.5 V to 5.0 V versions without PCB redesign, provided thermal and electrical margins remain acceptable for the new voltage.
NCP612SQ33T1 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)
NCP612SQ33T1 FAQ
1.How can I place an order for NCP612SQ33T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ33T1 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 NCP612SQ33T1 reliable?
The price and inventory of NCP612SQ33T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ33T1 is usually 5 days.
3.What payment methods are accepted for NCP612SQ33T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ33T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ33T1?
NCP612SQ33T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ33T1 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 NCP612SQ33T1?
For technical support, including NCP612SQ33T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ33T1 requirements.
6.How does Aetrix verify that NCP612SQ33T1 is sourced from the original manufacturer or authorized distributors?
All NCP612SQ33T1 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 NCP612SQ33T1 meets industry standards.
7.What is the process for return or replacement of NCP612SQ33T1?
All NCP612SQ33T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ33T1, 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 NCP612SQ33T1 part is unused and in its original packaging.
Return procedure for NCP612SQ33T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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