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onsemi NCP561SN15T1
- Part No.:
- NCP561SN15T1
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP561SN15T1.pdf
- Description:
- IC REG LINEAR 1.5V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,919
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Product details
Overview
NCP561SN15T1 from onsemi is a fixed 1.5 V, 150 mA CMOS low-dropout linear regulator in TSOP-5 package, featuring 3.0 µA typical quiescent current, 170 mV dropout at full load, and ±2.0% output voltage accuracy - designed for battery-powered handheld instruments requiring ultra-low standby power.
For engineers reviewing the NCP561SN15T1 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 150 mA, thermal shutdown behavior, enable threshold compatibility with 1.8 V logic, and ceramic capacitor stability with ≥1.0 µF output capacitance.
Technical Context
The NCP561SN15T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit and thermal shutdown) in a single die. Its ultralow IQ enables multi-week operation in coin-cell–powered devices without compromising regulation performance.
It operates across –40°C to +85°C ambient, supports input voltages up to 6.0 V, and maintains regulation down to VIN = VOUT + 130 mV (at 150 mA, 25°C), with ground current rising only to 4.0 µA under full load - confirming true low-IQ LDO architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.0% (ensures stable core supply for 1.5 V logic or analog sensors) |
| Max Output Current | 150 mA (supports moderate-power microcontrollers or RF front-ends) |
| Dropout Voltage | 170 mV at 150 mA (enables >1.67 V battery operation down to near end-of-life) |
| Quiescent Current | 3.0 µA typical (extends shelf life and runtime in always-on sensor nodes) |
| Enable Threshold | VTH(HI) = 1.3 V, VTH(LO) = 0.2 V (compatible with 1.8 V GPIO without level-shifting) |
| Thermal Shutdown | Activates at ~160°C junction (protects against PCB overheating during sustained overload) |
| Operating Temp | –40°C to +85°C (qualified for industrial portable equipment environments) |
Pinout & Package
Package: TSOP-5 (3.00 × 1.50 × 0.95 mm, 0.95 mm pitch, surface-mount).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Positive input supply | Accepts 1.67–6.0 V; must be decoupled with ≥1.0 µF ceramic capacitor close to pin |
| 2 - GND | Power ground reference | Low-impedance return path essential for noise immunity and thermal dissipation |
| 3 - Enable | Logic-controlled ON/OFF input | Pull ≥1.3 V to enable; pull ≤0.2 V to disable (ultra-low leakage in shutdown mode) |
| 4 - N/C | No internal connection | Must remain unconnected; no routing or soldering required |
| 5 - VOUT | Regulated 1.5 V output | Stable under 150 mA load; requires ≥1.0 µF output capacitor for transient stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 3.0 µA typical enables >1-year battery life in intermittent-sensing applications |
| PMOS pass element | Eliminates reverse-current path and supports zero-load ground current |
| Ceramic-capacitor compatible | Stable with 1.0 µF–10 µF X5R/X7R ceramics - no ESR requirement simplifies BOM |
| Integrated thermal shutdown | Auto-recovery after cooldown prevents latch-up during thermal overload events |
| Industrial temperature range | Validated operation from –40°C to +85°C ensures reliability in outdoor or automotive cabin environments |
Applications
| Battery-Powered Instruments | Hand-Held Medical Devices |
|---|---|
Use Scenario: Portable multimeter powered by two AAA alkaline cells (2.0–3.2 V range). IC Role / Device Role / Timing Role: Primary 1.5 V supply for LCD driver and microcontroller core. Use Value: 170 mV dropout allows continuous operation until battery voltage drops to 1.67 V, extending usable battery life by ~18% vs. higher-dropout alternatives. | Use Scenario: Pocket pulse oximeter with Bluetooth LE connectivity and OLED display. IC Role / Device Role / Timing Role: Low-noise 1.5 V rail for analog front-end (AFE) and sensor biasing. Use Value: 60 µVRMS output noise (20 Hz–100 kHz) preserves signal integrity in low-level photodiode current measurement. |
| Camcorder Audio Subsystem | IoT Sensor Node MCU Core |
Use Scenario: Mic preamp and ADC power rail in compact camcorder design. IC Role / Device Role / Timing Role: Clean 1.5 V supply isolated from noisy digital switching domains. Use Value: Enable pin allows synchronized power-up with main SoC, reducing inrush current and system-level EMI. | Use Scenario: Sub-GHz wireless sensor node using 1.5 V–tolerant MCU and SiP transceiver. IC Role / Device Role / Timing Role: Always-on regulator for RTC and wake-up controller during deep-sleep mode. Use Value: 3.0 µA quiescent current enables >24-month operation on CR2032 coin cell (220 mAh) with 1-min wake interval. |
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-1502E/TT | 2.0 µA IQ, 6 V max input, same 1.5 V output and TSOT-23-5 package | Lacks enable pin; requires external logic for shutdown control | Choose when board space is constrained and enable functionality is unnecessary |
| Torex XC6206P152MR-G | 1.0 µA IQ, SOT-23-5, but only 100 mA output and no thermal shutdown | Lower current capability and missing overtemperature protection limit use in high-ambient environments | Prefer for ultra-long-life button-cell applications where 100 mA suffices and thermal risk is negligible |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the NCP561SN15T1 uniquely combines 150 mA output, integrated enable, thermal shutdown, and 3.0 µA IQ in TSOP-5 - making it optimal for industrial handhelds needing robustness and moderate current.
Availability
NCP561SN15T1 is available at Aetrix Electronics and suitable for battery-powered instruments, hand-held medical devices, camcorders and cameras, and IoT sensor nodes requiring stable component supply with long-term manufacturability.
Supply support for NCP561SN15T1 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and edge applications.
The NCP561SN15T1 belongs to onsemi's low-power linear regulator product line, engineered specifically for portable battery-operated equipment demanding minimal quiescent current without sacrificing output accuracy or protection features.
FAQ
What is the maximum input voltage rating for the NCP561SN15T1?
The NCP561SN15T1 has an absolute maximum input voltage of 6.0 V. Exceeding this rating may cause permanent damage. For reliable operation, VIN should remain within 1.67 V (VOUT + dropout) to 6.0 V, with recommended derating above 5.5 V in high-temperature environments to maintain thermal margin.
Does the NCP561SN15T1 require an external resistor network to set output voltage?
No, the NCP561SN15T1 is a fixed-output regulator with internally trimmed 1.5 V reference. No external resistors are needed - the output voltage is factory-set and guaranteed within ±2.0% over temperature and load, simplifying layout and reducing BOM count.
Can the NCP561SN15T1 be used with ceramic output capacitors?
Yes, the NCP561SN15T1 is explicitly designed for ceramic output capacitors. It remains stable with 1.0 µF to 10 µF X5R or X7R types and imposes no minimum ESR requirement - eliminating the need for bulkier tantalum or aluminum electrolytic capacitors.
What happens to the NCP561SN15T1 when the Enable pin is left floating?
The Enable pin must not be left floating. If unused, it must be tied directly to VIN per datasheet guidance. A floating Enable pin may result in unpredictable startup behavior or partial conduction due to internal leakage paths, risking erratic output or increased quiescent current in the NCP561SN15T1.
Is the NCP561SN15T1 RoHS-compliant and lead-free?
Yes, the NCP561SN15T1 is RoHS-compliant and offered in Pb-free packaging. The "G" suffix variant (NCP561SN15T1G) explicitly denotes lead-free construction, while the base part NCP561SN15T1 also meets J-STD-609 Category 1 moisture sensitivity and IPC/JEDEC standard requirements for lead-free assembly.
NCP561SN15T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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):
- 0.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 8 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:
- 5-TSOP
NCP561SN15T1 FAQ
1.How can I place an order for NCP561SN15T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP561SN15T1 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 NCP561SN15T1 reliable?
The price and inventory of NCP561SN15T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP561SN15T1 is usually 5 days.
3.What payment methods are accepted for NCP561SN15T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP561SN15T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP561SN15T1?
NCP561SN15T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP561SN15T1 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 NCP561SN15T1?
For technical support, including NCP561SN15T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP561SN15T1 requirements.
6.How does Aetrix verify that NCP561SN15T1 is sourced from the original manufacturer or authorized distributors?
All NCP561SN15T1 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 NCP561SN15T1 meets industry standards.
7.What is the process for return or replacement of NCP561SN15T1?
All NCP561SN15T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP561SN15T1, 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 NCP561SN15T1 part is unused and in its original packaging.
Return procedure for NCP561SN15T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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