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onsemi NCP561SN15T1G
- Part No.:
- NCP561SN15T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP561SN15T1G.pdf
- Description:
- IC REG LINEAR 1.5V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,428
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Product details
Overview
NCP561SN15T1G from onsemi is a 1.5 V fixed-output, 150 mA CMOS low-dropout linear regulator in TSOP-5 package, featuring 3.0 µA typical quiescent current, 170 mV dropout at 150 mA, and ±2.0% output voltage accuracy - designed for battery-powered handheld instruments requiring ultra-low standby power.
For engineers reviewing the NCP561SN15T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at light-to-full load, enable-controlled shutdown capability, ceramic capacitor compatibility (≥1.0 µF), thermal shutdown behavior, and industrial temperature range support (-40°C to +85°C).
Technical Context
The NCP561SN15T1G integrates a PMOS pass transistor with internal voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its ultralow IQ enables multi-day operation in coin-cell–powered devices without compromising regulation stability.
It operates with input voltages from 1.8 V to 6.0 V and maintains regulation down to VIN = VOUT + 170 mV at full 150 mA load. The enable pin supports logic-level control (VTH_HI = 1.3 V, VTH_LO = 0.2 V), and the N/C pin simplifies layout by eliminating routing constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5 V ±2.0% - ensures stable core supply for low-voltage microcontrollers and sensors. |
| Max Output Current | 150 mA - sufficient for single-chip portable instrumentation without external boost. |
| Dropout Voltage | 170 mV at 150 mA - enables operation from 1.67 V input, extending battery life in Li-ion or dual-AA systems. |
| Quiescent Current | 3.0 µA typical - reduces standby drain to <1 µA/hour, critical for always-on sensor nodes. |
| Operating Temp Range | -40°C to +85°C - qualified for industrial and outdoor portable equipment environments. |
| Input Voltage Range | 1.8 V to 6.0 V - compatible with single Li-ion, 2xAA/AAA, or regulated intermediate rails. |
| Enable Threshold | VEN_H = 1.3 V, VEN_L = 0.2 V - interfaces directly with 1.8 V or 3.3 V GPIO without level-shifting. |
Pinout & Package
The NCP561SN15T1G is housed in a Pb-free TSOP-5 surface-mount package (3.0 mm × 1.5 mm × 0.95 mm), optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Positive input supply | Accepts 1.8–6.0 V; requires local 1.0 µF decoupling per datasheet Figure 13. |
| 2 - GND | Power ground reference | Low-impedance return path for both input and output currents; must be routed wide and short. |
| 3 - Enable | Logic-controlled ON/OFF input | Pull high ≥1.3 V to enable; pull low ≤0.2 V to disable (IQ drops to <0.1 µA). |
| 4 - N/C | No internal connection | Unbonded pad - left floating or tied to GND for mechanical stability; no electrical function. |
| 5 - VOUT | Regulated output | Delivers 1.5 V ±2% with ≤60 mV load regulation (10–150 mA); supports 1.0 µF ceramic output cap. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 3.0 µA typical - extends shelf life and runtime in battery-gated systems like smoke detectors or remote sensors. |
| Stable with ceramic capacitors | Minimum 1.0 µF output capacitance - eliminates need for costly tantalum or aluminum electrolytics. |
| Integrated thermal shutdown | Activates at ~160°C junction - prevents damage during sustained overload or poor PCB heatsinking. |
| ±2.0% output accuracy | Over temperature and line/load - ensures reliable ADC reference or MCU core voltage without external trimming. |
| Enable-controlled shutdown | Reduces IQ to <0.1 µA when disabled - enables system-level power sequencing and wake-on-event architectures. |
Applications
| Battery-Powered Instruments | Hand-Held Test Equipment |
|---|---|
Use Scenario: Portable multimeter powered by two alkaline AA cells (2.0–3.2 V range) with sleep mode between measurements. IC Role / Device Role / Timing Role: Primary 1.5 V LDO supplying analog front-end and low-power MCU core. Use Value: 3.0 µA quiescent current minimizes self-discharge during 30-day storage; 170 mV dropout allows operation until battery reaches 1.67 V. | Use Scenario: Pocket-sized oscilloscope using single Li-ion cell (3.0–4.2 V) with display backlight control. IC Role / Device Role / Timing Role: Secondary 1.5 V rail for precision ADC reference and signal conditioning circuitry. Use Value: ±2.0% output accuracy ensures <0.5 LSB error over temperature; ceramic capacitor compatibility reduces BOM cost and board area. |
| Camcorder Audio Subsystem | Medical Sensor Node |
Use Scenario: Low-noise microphone preamp stage in consumer camcorder requiring clean 1.5 V bias. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for analog audio signal chain, isolated from noisy digital rails. Use Value: 60 µVRMS output noise (20 Hz–100 kHz) preserves SNR; thermal shutdown protects against enclosure overheating during extended recording. | Use Scenario: Wearable ECG patch operating continuously for 72 hours on CR2032 coin cell. IC Role / Device Role / Timing Role: Always-on 1.5 V supply for ultra-low-power analog front-end and BLE SoC in sleep mode. Use Value: Enables >10-year shelf life via <0.1 µA shutdown current; -40°C to +85°C rating supports clinical and home-use environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent-current LDO 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; fixed-on operation only - unsuitable for power-gated systems. | Select when enable control is unnecessary and lowest possible IQ is prioritized. |
| Torex XC6206P152MR-G | 1.0 µA IQ, SOT-23-5, but only 100 mA output and 1.8–6.0 V input range. | Lower current capability limits use in higher-load analog sections; no thermal shutdown. | Choose for ultra-long-life coin-cell applications under 100 mA, where thermal protection is secondary. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the NCP561SN15T1G uniquely balances 150 mA output, integrated enable, thermal shutdown, and 3.0 µA IQ in a compact TSOP-5 package - making it optimal for portable instrumentation requiring both performance headroom and system-level power control.
Availability
NCP561SN15T1G is available at Aetrix Electronics and suitable for battery-powered instruments, hand-held test equipment, camcorders and cameras, and medical sensor nodes requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for NCP561SN15T1G 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 IoT applications.
The NCP561 series belongs to onsemi's precision analog LDO portfolio, engineered specifically for ultra-low-power portable electronics where extended battery life, small footprint, and robust thermal behavior are mandatory design requirements.
FAQ
What is the maximum input voltage rating for the NCP561SN15T1G?
The NCP561SN15T1G has an absolute maximum input voltage of 6.0 V. Exceeding this rating risks permanent damage. For inputs above 6.0 V, onsemi recommends using an external pre-regulator circuit as shown in Figure 17 of the datasheet - ensuring VIN remains within specification while maintaining safe junction temperature in the NCP561SN15T1G.
Does the NCP561SN15T1G require an external output capacitor, and what type is recommended?
Yes, the NCP561SN15T1G requires a minimum 1.0 µF output capacitor. Ceramic capacitors are explicitly supported and preferred due to their low ESR and stability; tantalum types are also acceptable. The device is stable across ESR values from a few mΩ up to 3.0 Ω, enabling flexibility in capacitor selection without compromising transient response or loop stability.
What happens to quiescent current when the NCP561SN15T1G is disabled via the Enable pin?
When the Enable pin is pulled low (≤0.2 V), the NCP561SN15T1G enters shutdown mode and its quiescent current drops to less than 0.1 µA - verified in the Electrical Characteristics table under "IQ (Enable Input = 0 V)". This ultra-low shutdown current makes the NCP561SN15T1G ideal for systems requiring deep-sleep states with minimal battery drain over extended periods.
Is the NCP561SN15T1G RoHS-compliant and lead-free?
Yes, the "G" suffix in NCP561SN15T1G denotes a Pb-free (RoHS-compliant) package. The device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified per onsemi's Pb-free manufacturing standards. The TSOP-5 package uses matte tin plating and complies with EU RoHS Directive 2011/65/EU and China RoHS.
How does thermal shutdown operate in the NCP561SN15T1G, and can it be reset automatically?
The NCP561SN15T1G incorporates an internal thermal shutdown circuit that activates at approximately 160°C junction temperature, disabling the output to prevent damage. Once the die cools below the hysteresis threshold (~140°C), the device automatically resumes normal operation without requiring an external reset signal - providing robust, self-recovering protection during transient overloads or inadequate PCB heatsinking.
NCP561SN15T1G 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
NCP561SN15T1G FAQ
1.How can I place an order for NCP561SN15T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP561SN15T1G 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 NCP561SN15T1G reliable?
The price and inventory of NCP561SN15T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP561SN15T1G is usually 5 days.
3.What payment methods are accepted for NCP561SN15T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP561SN15T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP561SN15T1G?
NCP561SN15T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP561SN15T1G 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 NCP561SN15T1G?
For technical support, including NCP561SN15T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP561SN15T1G requirements.
6.How does Aetrix verify that NCP561SN15T1G is sourced from the original manufacturer or authorized distributors?
All NCP561SN15T1G 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 NCP561SN15T1G meets industry standards.
7.What is the process for return or replacement of NCP561SN15T1G?
All NCP561SN15T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP561SN15T1G, 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 NCP561SN15T1G part is unused and in its original packaging.
Return procedure for NCP561SN15T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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