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onsemi NCP612SQ50T1
- Part No.:
- NCP612SQ50T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ50T1.pdf
- Description:
- IC REG LINEAR 5V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,382
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Product details
Overview
NCP612SQ50T1 from onsemi is a 5.0 V fixed-output CMOS low-quiescent-current linear regulator in SC70−5 package, designed for battery-powered portable electronics. It delivers up to 100 mA output current with 40 µA typical quiescent current, 230 mV dropout at 100 mA, and ±2.0% output voltage accuracy over −40°C to +85°C - enabling long runtime in cellular phones and handheld instruments.
For engineers reviewing the NCP612SQ50T1 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC70−5 footprint compatibility, enable-controlled standby mode, ceramic capacitor stability, and thermal-limited power dissipation in space-constrained designs.
Technical Context
The NCP612SQ50T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuits (current limit, thermal shutdown) in a single die. Its architecture enables stable regulation 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 0–6.0 V input range and maintains regulation down to 5.23 V input at 100 mA load (5.0 V output), with ground current rising only to 90 µA under full load - confirming true low-IQ LDO behavior rather than switching or bias-limited operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2.0% (ensures reliable MCU core or sensor rail tolerance compliance) |
| Quiescent Current | 40 µA typical (enables >1-year battery life in always-on IoT sensors) |
| Dropout Voltage | 230 mV at 100 mA (supports regulation from 5.23 V input, e.g., single Li-ion cell near EOD) |
| Max Output Current | 100 mA (sufficient for BLE SoCs, display drivers, or small microcontrollers) |
| Operating Temp | −40°C to +85°C (qualified for industrial and consumer portable environments) |
| Input Voltage Range | 0 to 6.0 V (compatible with 5 V USB, Li-ion, or dual-cell alkaline supplies) |
| Enable Threshold | 0.3 V (low) / 0.95 V (high) (directly interfaceable with 1.8 V/3.3 V GPIO without level shift) |
Pinout & Package
The NCP612SQ50T1 is housed in the SC70−5 (Case 419A−02) surface-mount package - 2.2 mm × 1.35 mm × 0.95 mm, 5-pin, lead-free compatible, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Main power input; must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin |
| 2 | Gnd | Power ground reference; requires low-impedance PCB pour to minimize noise coupling |
| 3 | Enable | Active-high digital control; pulls device into <1 µA standby when driven ≤0.3 V |
| 4 | N/C | No internal connection; must remain unconnected or floating (not tied to Gnd/Vin) |
| 5 | Vout | Regulated 5.0 V output; requires ≥1.0 µF ceramic capacitor with ESR 1–5 Ω for transient stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical ensures minimal battery drain during system sleep modes |
| Low-dropout PMOS architecture | 230 mV dropout at 100 mA enables use with aging or partially discharged batteries |
| Ceramic capacitor compatibility | Stable with 1.0 µF ceramic output cap (no ESR requirement) reduces BOM cost and board area |
| Integrated thermal shutdown | Activates at ~160°C junction temperature to prevent damage during overload or poor heatsinking |
| Enable-controlled standby | Reduces total current to <1 µA when Enable = low - critical for duty-cycled sensor nodes |
Applications
| Cellular Phones | Battery-Powered Consumer Products |
|---|---|
Use Scenario: Powering baseband processor I/O rails or camera module interfaces in slim smartphones. IC Role / Device Role / Timing Role: Low-noise, enable-controllable 5.0 V LDO supplying noise-sensitive analog circuitry. Use Value: 100 µVRMS output noise and 40 µA IQ extend talk time while maintaining signal integrity. | Use Scenario: Regulating 5.0 V supply for Bluetooth audio headsets or wireless earbuds. IC Role / Device Role / Timing Role: Primary voltage regulator for RF and codec subsystems requiring fast load transient response. Use Value: 200 µs load transient recovery (1 mA → 60 mA) prevents audio dropouts during connection bursts. |
| Hand-Held Instruments | Camcorders and Cameras |
Use Scenario: Providing stable 5.0 V rail to ADC front-end and microcontroller in portable multimeters. IC Role / Device Role / Timing Role: Precision voltage source with ±2.0% accuracy ensuring measurement repeatability. Use Value: 100 ppm/°C tempco and <±3 mV line/load regulation maintain calibration across operating temperature. | Use Scenario: Powering image sensor bias and lens actuator drivers in compact camcorders. IC Role / Device Role / Timing Role: Compact-area LDO delivering 100 mA peak current with minimal thermal rise. Use Value: SC70−5 footprint (2.2 × 1.35 mm) saves >60% board area vs. SOT-23 alternatives. |
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-5002E/MB | 4.0 µA IQ (lower), 6 V max input, same SC70−5 package, but no enable pin | Lacks active enable control - unsuitable where dynamic power gating is required | Select only if ultra-low standby current outweighs need for software-controlled shutdown |
| TCS2105-5.0 | 65 µA IQ (higher), 150 mA output, same enable function and SC70−5 footprint | Higher output current supports more demanding loads but increases quiescent drain | Prefer when system peak current exceeds 100 mA but retains identical layout and control interface |
Compared with MCP1700T-5002E/MB and TCS2105-5.0, the NCP612SQ50T1 uniquely balances 40 µA IQ, 100 mA capability, and integrated enable - making it optimal for battery-powered devices needing both efficiency and controllability in minimal area.
Availability
NCP612SQ50T1 is available at Aetrix Electronics and suitable for cellular phones, handheld instruments, camcorders and cameras requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for NCP612SQ50T1 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP612SQ50T1 belongs to onsemi's NCP612 series of ultra-low-IQ linear regulators - engineered specifically for portable battery-operated equipment where extended runtime and small form factor are critical design constraints.
FAQ
What is the maximum input voltage rating for the NCP612SQ50T1?
The NCP612SQ50T1 has an absolute maximum input voltage rating of 6.0 V. Operation above this level risks permanent damage. For reliable 5.0 V output regulation, minimum recommended input is 5.23 V (5.0 V + 230 mV dropout) at 100 mA load. The NCP612SQ50T1 is commonly used with single-cell Li-ion (4.2 V–3.0 V) or 5 V USB sources, where its low dropout preserves regulation through battery discharge.
Does the NCP612SQ50T1 require external components to operate stably?
Yes - the NCP612SQ50T1 requires two external ceramic capacitors: a minimum 1.0 µF input capacitor (Cin) placed close to the Vin and Gnd pins, and a minimum 1.0 µF output capacitor (Cout) connected directly to Vout and Gnd. These capacitors ensure stability, suppress input ripple, and improve load transient response. The NCP612SQ50T1 does not require specific ESR and works reliably with standard X5R/X7R ceramics.
What is the function of Pin 4 (N/C) on the NCP612SQ50T1?
Pin 4 of the NCP612SQ50T1 is marked N/C (No Connection) and has no internal bond wire or circuit connection. It must remain unconnected - neither tied to Gnd, Vin, nor any other node. Leaving Pin 4 floating is electrically safe and matches the manufacturer's recommended layout per the datasheet. Connecting it may introduce parasitic coupling or violate package mechanical specifications.
How does the enable function work on the NCP612SQ50T1?
The NCP612SQ50T1's Enable pin (Pin 3) is active-high: pulling it ≥0.95 V turns the regulator on; pulling it ≤0.3 V disables output and reduces total current to <1 µA. If unused, Enable must be tied directly to Vin - not through a resistor - to guarantee reliable startup. This feature allows precise software-controlled power sequencing in multi-rail systems using the NCP612SQ50T1.
Is the NCP612SQ50T1 suitable for automotive applications?
No - the NCP612SQ50T1 is rated for −40°C to +85°C ambient operation and carries the "NCP" prefix, indicating commercial/industrial qualification. For automotive use, the pin-compatible NCV612SQ50T1 variant is specified for −40°C to +125°C and qualified to AEC-Q100. While the NCP612SQ50T1 may function in benign automotive environments, it lacks the extended temperature range, process controls, and qualification documentation required for automotive deployment.
NCP612SQ50T1 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):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 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)
NCP612SQ50T1 FAQ
1.How can I place an order for NCP612SQ50T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ50T1 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 NCP612SQ50T1 reliable?
The price and inventory of NCP612SQ50T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ50T1 is usually 5 days.
3.What payment methods are accepted for NCP612SQ50T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ50T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ50T1?
NCP612SQ50T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ50T1 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 NCP612SQ50T1?
For technical support, including NCP612SQ50T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ50T1 requirements.
6.How does Aetrix verify that NCP612SQ50T1 is sourced from the original manufacturer or authorized distributors?
All NCP612SQ50T1 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 NCP612SQ50T1 meets industry standards.
7.What is the process for return or replacement of NCP612SQ50T1?
All NCP612SQ50T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ50T1, 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 NCP612SQ50T1 part is unused and in its original packaging.
Return procedure for NCP612SQ50T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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