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onsemi NCP612SQ15T1G
- Part No.:
- NCP612SQ15T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ15T1G.pdf
- Description:
- IC REG LINEAR 1.5V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
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Product details
Overview
NCP612SQ15T1G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator delivering 100 mA at 1.5 V with ultra-low 40 µA quiescent current, 230 mV dropout at 100 mA, ±2.0% output voltage accuracy, and operation from −40 °C to +85 °C - designed for battery-powered portable electronics requiring stable low-power biasing.
For engineers reviewing the NCP612SQ15T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance under load, thermal behavior in SC70-5 layout, enable logic compatibility, ceramic capacitor stability, and automotive-grade alternatives for extended temperature designs.
Technical Context
The NCP612SQ15T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit, thermal shutdown) in a single die. It operates as a high-accuracy, low-noise LDO without requiring minimum load or specific ESR output capacitors.
Its enable input supports active-high control with 0.95 V turn-on threshold and 0.3 V turn-off threshold; unused enable must be tied to Vin. The device achieves 70 dB ripple rejection at 100 Hz and maintains regulation down to 1.5 V output across its full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5 V ±2.0% over −40 °C to +85 °C and 1–100 mA load - ensures stable core/bias rail for low-voltage microcontrollers and sensors. |
| Dropout Voltage | 230 mV at 100 mA and 3.0 V VOUT - enables operation from 1.73 V input, critical for single-cell Li-ion or alkaline systems. |
| Quiescent Current | 40 µA typical at no load - extends battery life in always-on monitoring circuits and standby modes. |
| Input Voltage Range | 0 to 6.0 V - supports wide-input battery and intermediate supply rails without external pre-regulation. |
| Thermal Shutdown | Activates at ~160 °C junction temperature - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Noise Performance | 100 µVRMS (100 Hz–100 kHz) - suitable for noise-sensitive analog front-ends and RF power management. |
| Package | SC70-5 (SOT-353), 1.25 mm × 1.65 mm footprint - enables ultra-compact placement in space-constrained handheld devices. |
Pinout & Package
The NCP612SQ15T1G is housed in the SC70-5 (SOT-353) surface-mount package, a 5-pin micro-miniature outline with 0.65 mm pitch and exposed pad not present. Thermal performance relies on PCB copper area connected to Pin 2 (Gnd).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin to suppress line transients. |
| 2 | Gnd | Power ground reference - serves as primary thermal and electrical return path; requires low-impedance PCB trace to minimize noise coupling. |
| 3 | Enable | Active-high digital control - pulls device into low-power standby (<1 µA) when driven <0.3 V; tie to Vin if unused. |
| 4 | N/C | No internal connection - left floating; no PCB trace or solder mask opening required. |
| 5 | Vout | Regulated 1.5 V output - connects directly to load; output capacitor (≥1.0 µF) must be placed within 2 mm for optimal transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 40 µA typical enables >1-year battery life in 10 µA average-current IoT sensor nodes. |
| Ceramic-capacitor stable | No minimum ESR requirement allows use of low-cost, small-footprint X5R/X7R MLCCs without oscillation risk. |
| Low dropout | 230 mV at full 100 mA load permits direct regulation from partially discharged 2-cell alkaline or LiFePO4 sources. |
| Enable control | Digital on/off sequencing with defined 0.95 V/0.3 V thresholds simplifies integration with GPIOs in MCU-based power trees. |
| ±2.0% output accuracy | Guarantees 1.47–1.53 V output across temp/load - meets tight tolerance requirements of ADC references and RF IC bias rails. |
Applications
| Wearable Health Monitor | Industrial Wireless Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG signal acquisition powered by coin-cell battery. IC Role / Device Role / Timing Role: Provides clean, low-noise 1.5 V bias for analog front-end and microcontroller core. Use Value: 40 µA quiescent current extends operational lifetime beyond 2 years; 100 µVRMS noise avoids baseline drift in sub-mV biopotential measurements. |
Use Scenario: Battery-operated vibration sensor transmitting data via LoRaWAN every 5 minutes. IC Role / Device Role / Timing Role: Supplies regulated 1.5 V to ultra-low-power MCU and MEMS accelerometer during active measurement bursts. Use Value: 230 mV dropout enables full 100 mA peak current delivery even as battery drops to 1.7 V, ensuring reliable ADC sampling and radio transmit. |
| Portable Barcode Scanner | Smart Home Motion Detector |
|
Use Scenario: Handheld scanner using laser diode and CMOS image sensor, powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Delivers precise 1.5 V to image sensor analog block and laser driver control logic. Use Value: ±2.0% output accuracy maintains consistent pixel response and laser intensity calibration across temperature swings during field use. |
Use Scenario: PIR-based occupancy detector with BLE connectivity, running on AA batteries for 5+ years. IC Role / Device Role / Timing Role: Powers PIR signal conditioner and BLE SoC in deep-sleep and wake-up states. Use Value: Enable pin allows MCU to disable NCP612SQ15T1G during sleep, reducing system IQ to <1 µA - critical for multi-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | Same 1.5 V output, 250 mV dropout at 250 mA, but higher 1.6 µA quiescent current in shutdown and no enable pin. | Lacks active enable control; requires external FET for full off-state isolation. | Choose when higher output current headroom is needed and enable functionality is not required. |
| TPS7A0515PDBVR | 1.5 V output, 170 mV dropout at 200 mA, 25 µA IQ, integrated enable, but larger SOT-23-5 package (2.9 × 1.6 mm vs. SC70-5's 1.65 × 1.25 mm). | Requires more PCB area; better thermal dissipation but less suited for ultra-dense layouts. | Prefer when lower dropout and tighter thermal margin outweigh size constraints. |
Compared with MCP1700T-1502E/TT and TPS7A0515PDBVR, the NCP612SQ15T1G offers the smallest footprint and lowest active IQ among 1.5 V SC70-5 LDOs, making it optimal for miniaturized, long-life battery systems where board space and standby current are dominant constraints.
Availability
NCP612SQ15T1G is available at Aetrix Electronics and suitable for wearable health monitors, industrial wireless sensor nodes, and portable barcode scanners requiring stable component supply with guaranteed long-term sourcing.
Supply support for NCP612SQ15T1G 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 innovation for automotive, industrial, cloud, and IoT applications.
The NCP612SQ15T1G belongs to onsemi's NCP612 series of ultra-low-IQ LDOs engineered specifically for portable battery-powered equipment where minimal standby consumption and compact packaging are essential.
FAQ
What is the maximum input voltage rating for the NCP612SQ15T1G?
The NCP612SQ15T1G has an absolute maximum input voltage of 6.0 V. Exceeding this rating may cause permanent damage. For reliable operation, maintain Vin ≤ 6.0 V while ensuring sufficient headroom above Vout (e.g., ≥1.73 V for 100 mA load) to sustain regulation per the dropout specification.
Does the NCP612SQ15T1G require an external pull-up resistor on the Enable pin?
No - the NCP612SQ15T1G does not require an external pull-up on the Enable pin. If unused, Enable should be directly connected to Vin. The internal circuitry does not mandate external biasing, and tying to Vin ensures default enabled operation without additional components.
Can the NCP612SQ15T1G operate with a 1.0 µF ceramic output capacitor?
Yes - the NCP612SQ15T1G is explicitly characterized and stabilized with a 1.0 µF ceramic capacitor (X5R/X7R). Unlike many LDOs, it imposes no minimum ESR requirement, enabling robust performance with low-ESR MLCCs commonly used in space-constrained designs.
What is the thermal shutdown threshold of the NCP612SQ15T1G?
The NCP612SQ15T1G activates thermal shutdown at approximately 160 °C junction temperature. Once triggered, the device disables output until junction temperature falls below the hysteresis threshold (~140 °C), protecting against irreversible damage during sustained overload or inadequate PCB heat sinking.
Is the NCP612SQ15T1G suitable for automotive applications?
No - the NCP612SQ15T1G is rated for −40 °C to +85 °C ambient and is not AEC-Q100 qualified. For automotive use, select the NCV612SQ15T2G variant (−40 °C to +125 °C, AEC-Q100 qualified, PPAP capable), which shares identical electrical specs but undergoes automotive-grade qualification testing.
NCP612SQ15T1G 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.68V @ 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)
NCP612SQ15T1G FAQ
1.How can I place an order for NCP612SQ15T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ15T1G 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 NCP612SQ15T1G reliable?
The price and inventory of NCP612SQ15T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ15T1G is usually 5 days.
3.What payment methods are accepted for NCP612SQ15T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ15T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ15T1G?
NCP612SQ15T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ15T1G 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 NCP612SQ15T1G?
For technical support, including NCP612SQ15T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ15T1G requirements.
6.How does Aetrix verify that NCP612SQ15T1G is sourced from the original manufacturer or authorized distributors?
All NCP612SQ15T1G 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 NCP612SQ15T1G meets industry standards.
7.What is the process for return or replacement of NCP612SQ15T1G?
All NCP612SQ15T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ15T1G, 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 NCP612SQ15T1G part is unused and in its original packaging.
Return procedure for NCP612SQ15T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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