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onsemi NCP612SQ15T1
- Part No.:
- NCP612SQ15T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ15T1.pdf
- Description:
- IC REG LINEAR 1.5V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:3,858
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Product details
Overview
NCP612SQ15T1 from onsemi is a 1.5 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 rail generation.
For engineers reviewing the NCP612SQ15T1 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 NCP612SQ15T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuits (current limit, thermal shutdown) in a single die. It operates as a low-dropout regulator with no minimum load requirement and supports input voltages up to 6.0 V.
Its enable pin provides logic-level control (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V), allowing system-level power sequencing. The device achieves 70 dB ripple rejection at 100 Hz and maintains regulation down to 1.5 V output with only 1.0 µF input/output ceramic capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5 V ±2.0% (ensures stable core/peripheral rail for 1.5 V logic or analog subsystems) |
| Quiescent Current | 40 µA typical (enables >1-year battery life in always-on sensor nodes) |
| Dropout Voltage | 230 mV at 100 mA (allows operation from 1.73 V input, compatible with single Li-ion or dual alkaline cells) |
| Operating Temperature | −40°C to +85°C (supports industrial and consumer portable equipment environments) |
| Input Voltage Range | 0 to 6.0 V (covers wide battery chemistries and unregulated supply margins) |
| Output Current | 100 mA continuous (sufficient for microcontrollers, RF transceivers, and small displays) |
| Thermal Shutdown | Activates at ~160°C (prevents damage during transient overload or poor PCB thermal design) |
Pinout & Package
Package: SC70−5 (SOT−353 / Case 419A−02), 1.9 mm × 1.3 mm × 0.9 mm, surface-mount, Pb-free option available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin |
| 2 | Gnd | Power ground reference - requires low-impedance connection to PCB ground plane |
| 3 | Enable | Active-high digital control - pulls low to disable regulator (IQ drops to ≤0.03 µA); tie to Vin if unused |
| 4 | N/C | No internal connection - must remain floating or grounded (not driven) |
| 5 | Vout | Regulated 1.5 V output - requires ≥1.0 µF ceramic capacitor; ESR from 0 to 5 Ω accepted |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables multi-year battery operation in IoT endpoints and wearables |
| Ceramic capacitor compatibility | Stable with 1.0 µF ceramic input/output - eliminates need for costly tantalum or high-ESR caps |
| Enable-controlled shutdown | Reduces total system IQ to <0.03 µA when disabled - critical for duty-cycled sensors |
| ±2.0% output accuracy | Guarantees 1.47–1.53 V across temperature and load - meets tight tolerance requirements of 1.5 V logic |
| Thermal and current protection | Integrated shutdown prevents failure under short-circuit or high ambient conditions without external circuitry |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered environmental sensor transmitting data via BLE or LoRaWAN every 5 minutes. IC Role / Device Role / Timing Role: Primary 1.5 V supply for ultra-low-power MCU and analog front-end. Use Value: 40 µA IQ extends CR2032 battery life beyond 3 years; SC70−5 footprint minimizes board area. |
Use Scenario: Handheld pulse oximeter operating from two AAA alkaline cells. IC Role / Device Role / Timing Role: Stable 1.5 V rail for optical sensor biasing and signal conditioning. Use Value: 230 mV dropout ensures regulation until battery voltage falls to 1.73 V; ±2.0% accuracy maintains ADC reference integrity. |
| Industrial Handheld Scanner | Smart Home Remote Control |
Use Scenario: Rugged barcode scanner powered by rechargeable Li-ion with frequent wake/sleep cycles. IC Role / Device Role / Timing Role: Always-on 1.5 V supply for real-time clock and wake-up controller. Use Value: Enable pin allows full shutdown between scans, reducing average system current to sub-µA levels. |
Use Scenario: RF remote using coin-cell battery with long shelf life and infrequent button presses. IC Role / Device Role / Timing Role: Low-noise 1.5 V source for RF transceiver and touch controller. Use Value: 100 µVRMS output noise (100 Hz–100 kHz) prevents interference with 2.4 GHz transmission. |
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/MB | 1.5 V, 250 mA, 1.6 µA IQ, SOT-23-5 - lower IQ but higher dropout (600 mV @ 250 mA) | Better for ultra-long-life coin-cell devices; less suitable for low-input-voltage battery systems | Select when lowest possible IQ dominates; verify dropout margin with actual battery discharge curve. |
| TPS70615DBVR | 1.5 V, 150 mA, 1.3 µA IQ, SOT-23-5 - lower IQ, same dropout spec, tighter initial accuracy (±0.5%) | Higher precision required for reference-sensitive analog circuits; larger package increases board area | Choose for high-accuracy analog rails; confirm SC70−5 footprint constraint is not mandatory. |
Compared with MCP1700T-1502E/MB and TPS70615DBVR, the NCP612SQ15T1 offers optimal balance of ultra-low IQ, low dropout, SC70−5 size, and cost - making it ideal for space-constrained, battery-powered consumer and industrial devices where 100 mA output suffices.
Availability
NCP612SQ15T1 is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, industrial handheld scanners, smart home remotes, and battery-powered instrumentation requiring stable component supply with consistent lead times and traceable sourcing.
Supply support for NCP612SQ15T1 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 IoT applications.
The NCP612SQ15T1 belongs to onsemi's NCP612 series of ultra-low-IQ LDO regulators - engineered specifically for extended battery life in portable communication and handheld instrumentation.
FAQ
What is the maximum input voltage rating for the NCP612SQ15T1?
The NCP612SQ15T1 has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable long-term use, keep Vin ≤ 6.0 V - especially important when powering from unregulated sources like lithium batteries nearing full charge (4.2 V) or dual alkaline stacks (3.2 V).
Does the NCP612SQ15T1 require an external pull-up resistor on the Enable pin?
No - the NCP612SQ15T1 does not require an external pull-up on the Enable pin. If unused, the Enable pin must be connected directly to Vin to ensure normal operation. Pulling Enable low disables the regulator and reduces quiescent current to ≤0.03 µA.
Can the NCP612SQ15T1 operate with only 1.0 µF ceramic capacitors on input and output?
Yes - the NCP612SQ15T1 is explicitly characterized and guaranteed stable with 1.0 µF ceramic capacitors on both input and output. No minimum ESR is required, and the device accepts ESR values from near-zero up to 5.0 Ω, simplifying BOM and layout.
What is the dropout voltage of the NCP612SQ15T1 at 100 mA load and −40°C ambient?
At −40°C and 100 mA load, the NCP612SQ15T1 dropout voltage is 530 mV (typical) and up to 680 mV (max). This means Vin must be ≥2.03 V to maintain 1.5 V regulation under worst-case cold conditions - critical for low-voltage battery designs.
Is the NCP612SQ15T1 pin-compatible with other variants in the NCP612 family?
Yes - all NCP612 variants (e.g., NCP612SQ18T1, NCP612SQ33T1) share identical SC70−5 pinout and package dimensions. Only the output voltage and marking differ; no PCB redesign is needed when changing between fixed-voltage versions.
NCP612SQ15T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- 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)
NCP612SQ15T1 FAQ
1.How can I place an order for NCP612SQ15T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ15T1 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 NCP612SQ15T1 reliable?
The price and inventory of NCP612SQ15T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ15T1 is usually 5 days.
3.What payment methods are accepted for NCP612SQ15T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ15T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ15T1?
NCP612SQ15T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ15T1 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 NCP612SQ15T1?
For technical support, including NCP612SQ15T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ15T1 requirements.
6.How does Aetrix verify that NCP612SQ15T1 is sourced from the original manufacturer or authorized distributors?
All NCP612SQ15T1 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 NCP612SQ15T1 meets industry standards.
7.What is the process for return or replacement of NCP612SQ15T1?
All NCP612SQ15T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ15T1, 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 NCP612SQ15T1 part is unused and in its original packaging.
Return procedure for NCP612SQ15T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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