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onsemi NCP612SQ37T1G
- Part No.:
- NCP612SQ37T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ37T1G.pdf
- Description:
- IC REG 100MA 3.7V LOW IQ SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,749
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Product details
Overview
NCP612SQ37T1G from onsemi is a 3.7 V fixed-output CMOS low-quiescent-current linear voltage regulator in SC70−5 package, featuring 40 µA typical quiescent current, 230 mV dropout at 100 mA, and ±2.0% output voltage accuracy over −40°C to +85°C - designed for battery-powered portable electronics requiring stable low-power supply rail generation.
For engineers reviewing the NCP612SQ37T1G 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 100 mA continuous output capability.
Technical Context
The NCP612SQ37T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal protection circuits (current limit, thermal shutdown) - enabling low-noise, low-dropout regulation without external compensation. Its enable input provides logic-level control of output state with 0.3 V (low) / 0.95 V (high) thresholds.
Designed for single-supply operation from 0–6.0 V input, it delivers regulated 3.7 V output with load regulation of 0.3–0.8 mV/mA and line regulation of ≤3.0 mV/V across its operating range. Output noise is 100 µVRMS (100 Hz–100 kHz) with 1 µF ceramic output capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.7 V ±2.0% (10 mA load, 25°C); maintains regulation down to 3.589 V at 100 mA and −40°C to +85°C |
| Quiescent Current | 40 µA typical (IOUT = 1–100 mA, VEN = VIN); enables multi-year battery life in always-on sensor nodes |
| Dropout Voltage | 230 mV typical at 100 mA and 3.7 V output; allows operation from 3.93 V input minimum under full load |
| Operating Temperature | −40°C to +85°C (NCP612 grade); supports industrial and consumer ambient environments without derating |
| Input Voltage Range | 0 V to 6.0 V; compatible with Li-ion, Li-poly, and dual-cell alkaline/battery stacks |
| Output Noise | 100 µVRMS (100 Hz–100 kHz, 30 mA load, 1 µF COUT); suitable for RF and precision analog circuitry |
| Enable Threshold | VTH(HI) = 0.95 V min, VTH(LO) = 0.3 V max; interfaces directly with 1.8 V/3.3 V GPIO without level-shifting |
Pinout & Package
Package: SC70−5 (Case 419A−02), micro-miniature surface-mount, 1.80 × 1.15 × 0.80 mm body, 0.65 mm lead pitch, Pb-free (RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive power supply input; accepts 0–6.0 V; requires local 1 µF decoupling capacitor |
| 2 | Gnd | Power ground reference; must be low-impedance connection to minimize noise and dropout variation |
| 3 | Enable | Active-high digital control input; pulls low to disable output (IQ drops to 0.03 µA); connect to Vin if unused |
| 4 | N/C | No internal connection; electrically isolated; no PCB trace or pad required |
| 5 | Vout | Regulated 3.7 V output; stable with 1 µF ceramic capacitor; supports up to 100 mA continuous load |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical ensures >10-year battery life in 10 µA average-load IoT endpoints |
| Ceramic-capacitor compatible | Stable with 1 µF X5R/X7R ceramics (ESR 1 mΩ–5 Ω); eliminates need for costly tantalum or electrolytic caps |
| Integrated thermal protection | Auto-shutdown at ~160°C junction temperature prevents damage during overload or poor PCB thermal design |
| Precision output accuracy | ±2.0% over temperature and load ensures reliable operation of 3.3 V–3.8 V logic and analog ICs |
| Low-noise regulation | 100 µVRMS noise enables clean power for ADCs, RF transceivers, and audio codecs |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition powered by coin cell or thin-film battery. IC Role / Device Role / Timing Role: Primary 3.7 V supply rail for analog front-end and BLE SoC. Use Value: 40 µA IQ extends battery life beyond 2 years; low noise preserves SNR in sub-µV biomedical signals. |
Use Scenario: Compact environmental sensor (temp/humidity/pressure) transmitting data every 5 seconds via BLE. IC Role / Device Role / Timing Role: Always-on LDO supplying MCU core and radio during sleep; enabled only during transmit/receive bursts. Use Value: Enable pin reduces system IQ to <1 µA in deep sleep; SC70−5 footprint saves space in <100 mm² PCB designs. |
| Industrial Handheld Scanner | Smart Home Motion Detector |
Use Scenario: Ruggedized barcode scanner using Li-ion battery and laser diode driver. IC Role / Device Role / Timing Role: Clean 3.7 V rail for image sensor, decoder ASIC, and touch interface controller. Use Value: 230 mV dropout allows operation down to 3.93 V input - maximizing usable battery capacity from 4.2 V → 3.0 V discharge curve. |
Use Scenario: PIR-based occupancy sensor with wake-on-motion and periodic Zigbee reporting. IC Role / Device Role / Timing Role: Standby power source for MCU and RF transceiver; disabled between motion events. Use Value: ±2.0% output tolerance ensures consistent PIR amplifier biasing and RF oscillator frequency stability across temperature. |
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-3702E/MB | 3.7 V output, 1.6 µA IQ, SOT-23-5 package, 600 mV dropout at 250 mA | Lower IQ but higher dropout and larger footprint; not SC70−5 compatible | Select when ultra-low standby current outweighs size and dropout constraints |
| Torex XC6206P372MR-G | 3.7 V output, 1 µA IQ, SOT-25 package, 160 mV dropout at 100 mA, no enable pin | No enable function; smaller SOT-25 but lacks active control for dynamic power gating | Select for simplest always-on 3.7 V rail where enable functionality is unnecessary |
Compared with MCP1700T-3702E/MB and XC6206P372MR-G, the NCP612SQ37T1G uniquely balances ultra-low 40 µA IQ, SC70−5 miniaturization, integrated enable, and 230 mV dropout - making it optimal for space-constrained, battery-gated portable systems requiring precise 3.7 V regulation.
Availability
NCP612SQ37T1G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, industrial handheld scanners, and smart home motion detectors requiring stable component supply with guaranteed long-term sourcing.
Supply support for NCP612SQ37T1G 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 delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP612 series belongs to onsemi's precision low-power linear regulator product line, engineered specifically for battery-operated portable electronics demanding minimal quiescent current, small footprint, and robust thermal performance.
FAQ
What is the maximum continuous output current of the NCP612SQ37T1G?
The NCP612SQ37T1G delivers up to 100 mA continuous output current while maintaining regulation and thermal safety under typical PCB layout conditions. At 100 mA load and 25°C ambient, its dropout remains 230 mV, and junction temperature stays within safe limits when proper copper pour is used per the datasheet thermal guidelines.
Does the NCP612SQ37T1G require an external capacitor on the Enable pin?
No, the NCP612SQ37T1G does not require an external capacitor on the Enable pin. The Enable input is CMOS-compatible with TTL/CMOS logic levels; it draws negligible current and functions reliably with direct connection to a microcontroller GPIO or pull-up to Vin. Adding capacitance may slow turn-on/turn-off response unnecessarily.
Can the NCP612SQ37T1G operate with a 1 µF ceramic output capacitor?
Yes, the NCP612SQ37T1G is explicitly designed and tested for stability with a 1 µF ceramic output capacitor (X5R/X7R dielectric). This eliminates the need for larger or higher-ESR capacitors, reducing board area and cost while improving transient response and noise rejection compared to tantalum alternatives.
What is the thermal shutdown threshold of the NCP612SQ37T1G?
The NCP612SQ37T1G incorporates internal thermal protection that activates at approximately 160°C junction temperature, disabling the output until the die cools below the hysteresis threshold (~140°C). This safeguard prevents permanent damage during sustained overload, poor heatsinking, or high ambient temperature operation.
Is the NCP612SQ37T1G pin-compatible with other variants in the NCP612 family?
Yes, all NCP612 variants including NCP612SQ37T1G share identical SC70−5 pinout (Vin, Gnd, Enable, N/C, Vout) and electrical interface - enabling drop-in replacement across output voltages (1.5 V to 5.0 V) without PCB redesign, provided thermal and layout constraints remain satisfied.
NCP612SQ37T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- 1
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
NCP612SQ37T1G FAQ
1.How can I place an order for NCP612SQ37T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ37T1G 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 NCP612SQ37T1G reliable?
The price and inventory of NCP612SQ37T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ37T1G is usually 5 days.
3.What payment methods are accepted for NCP612SQ37T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ37T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ37T1G?
NCP612SQ37T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ37T1G 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 NCP612SQ37T1G?
For technical support, including NCP612SQ37T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ37T1G requirements.
6.How does Aetrix verify that NCP612SQ37T1G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ37T1G 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 NCP612SQ37T1G meets industry standards.
7.What is the process for return or replacement of NCP612SQ37T1G?
All NCP612SQ37T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ37T1G, 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 NCP612SQ37T1G part is unused and in its original packaging.
Return procedure for NCP612SQ37T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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