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onsemi NCP571SN10T1G
- Part No.:
- NCP571SN10T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP571SN10T1G.pdf
- Description:
- IC REG LINEAR 1V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,054
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Product details
Overview
NCP571SN10T1G from onsemi is a fixed-output, low-dropout linear voltage regulator designed for portable battery-powered systems requiring ultra-low quiescent current and stable 1.0 V output. It delivers up to 150 mA, features 4.0 µA typical IQ, 3.0% initial output accuracy, and operates across −40 °C to +85 °C with a 12 V max input. It is used in handheld instruments and camcorders where standby power efficiency and compact footprint are critical.
For engineers reviewing the NCP571SN10T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 150 mA (≤650 mV), thermal performance in TSOP-5 (RJA = 250 °C/W), enable logic threshold (1.3 V high, 0.3 V low), and compatibility with 0.1 µF ceramic output capacitors.
Technical Context
The NCP571SN10T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry-including thermal shutdown and current limiting-within a single TSOP-5 package. Its architecture enables stable regulation with minimal external components and no ESR requirements on the output capacitor.
It uses an enable input with defined logic thresholds (VTH(HI) = 1.3 V, VTH(LO) = 0.3 V) to control output state, and its ground current remains below 8.0 µA over full load (10–150 mA) and temperature range, supporting long battery life in always-on subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.0 V ±3% at 10 mA (25 °C); ±4% over full industrial temp range - ensures stable core supply for low-voltage microcontrollers. |
| Max Input Voltage | 12 V - supports direct connection to Li-ion battery stacks or 9 V adapter rails without pre-regulation. |
| Quiescent Current | 4.0 µA typical (Enable = Vin) - extends battery runtime in sleep mode for multi-day portable instrumentation. |
| Dropout Voltage | 550 mV typical at 10 mA (1.0 V output) - allows operation down to ~1.55 V input, enabling use with single-cell LiFePO4 or dual-alkaline sources. |
| Output Current | 150 mA continuous - sufficient for powering RF transceivers, sensors, or small FPGA I/O banks. |
| Thermal Resistance | RJA = 250 °C/W (TSOP-5, 1 oz Cu, 100 mm²) - requires minimal PCB copper area for thermal management in space-constrained layouts. |
| Enable Threshold | VEN(HI) = 1.3 V, VEN(LO) = 0.3 V - compatible with 1.8 V and 3.3 V GPIO without level-shifting. |
Pinout & Package
The NCP571SN10T1G is housed in a Pb-free TSOP-5 surface-mount package (Case 483, 3.00 × 1.50 × 0.95 mm), optimized for high-density portable PCBs. The exposed pad is not present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vout | Regulated 1.0 V output; connects directly to load and local 0.1 µF ceramic decoupling capacitor. |
| 2 | GND | Power ground reference; must be tied to low-impedance system ground plane to minimize noise and ensure stability. |
| 3 | Enable | Active-high digital control input; pulled to Vin for always-on operation or driven by MCU GPIO to enable/disable regulation. |
| 4 | NC | No internal connection; recommended to connect to GND to reduce noise coupling and improve thermal dissipation. |
| 5 | Vin | Unregulated input (0–12 V); requires local 0.1 µF ceramic input capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 4.0 µA typical enables >1-year battery life in 10 µA average-power IoT sensor nodes. |
| Stable with 0.1 µF ceramic output cap | Eliminates need for tantalum or high-ESR capacitors, reducing BOM cost and board area. |
| ±3% output voltage accuracy | Meets tight tolerance requirements of 1.0 V FPGA core rails and low-voltage ADC references. |
| Integrated thermal shutdown | Protects against sustained overload or poor heatsinking without external circuitry. |
| Industrial temperature range | −40 °C to +85 °C operation supports deployment in outdoor handheld test equipment. |
Applications
| Battery-Powered Instruments | Hand-Held Test Equipment |
|---|---|
Use Scenario: Portable multimeter powered by two AA alkaline cells (1.8–3.2 V). IC Role / Device Role / Timing Role: Primary 1.0 V LDO supplying microcontroller core and analog front-end. Use Value: 4.0 µA quiescent current extends shelf life and operational runtime; 550 mV dropout enables regulation until battery reaches ~1.55 V. | Use Scenario: Handheld oscilloscope with embedded ARM Cortex-M7 and 12-bit ADC. IC Role / Device Role / Timing Role: Clean 1.0 V supply for ADC reference and digital core logic. Use Value: ±3% output accuracy ensures <0.5 LSB gain error in 12-bit conversion; 0.1 µF ceramic compatibility simplifies layout near sensitive analog sections. |
| Camcorder Image Sensor Bias | Low-Power Wireless Sensor Node |
Use Scenario: CMOS image sensor bias rail in consumer camcorder with Li-ion battery input. IC Role / Device Role / Timing Role: Dedicated 1.0 V analog supply for sensor pixel array and column amplifiers. Use Value: Low noise and high PSRR (implied by PMOS architecture and ceramic stability) preserve dynamic range; enable pin allows synchronous power gating during idle frames. | Use Scenario: BLE-enabled environmental sensor node using CR2032 coin cell (2.0–3.0 V). IC Role / Device Role / Timing Role: Always-on 1.0 V regulator for ultra-low-power MCU and wake-up timer. Use Value: 4.0 µA IQ minimizes self-discharge; 150 mA headroom supports brief RF transmit bursts without brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1002E/TT | 1.0 V fixed, 1.6 µA IQ, SOT-23-3 package, no enable pin. | Lacks enable control; limited to always-on or external FET switching. | Select when board space is constrained and enable functionality is unnecessary. |
| TLS850B2TE/V1 | 1.0 V fixed, 25 µA IQ, automotive-grade AEC-Q100, integrated watchdog and reset. | Higher IQ and automotive qualification increase cost and complexity for consumer portable use. | Select only for automotive infotainment subsystems requiring functional safety support. |
Compared with MCP1700T-1002E/TT and TLS850B2TE/V1, the NCP571SN10T1G uniquely balances ultra-low IQ (4.0 µA), enable functionality, and TSOP-5 footprint-making it optimal for space- and battery-limited handheld instruments where precise 1.0 V regulation and controlled power sequencing are required.
Availability
NCP571SN10T1G is available at Aetrix Electronics and suitable for battery-powered instruments, hand-held test equipment, and camcorders requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for NCP571SN10T1G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP571SN10T1G belongs to onsemi's NCP571 series of ultra-low-IQ LDO regulators, engineered specifically for portable battery-operated devices where extended runtime and minimal board area are design priorities.
FAQ
What is the maximum input voltage rating for the NCP571SN10T1G?
The NCP571SN10T1G has a maximum input voltage rating of 12 V, as specified in the Absolute Maximum Ratings table. This allows direct integration with common battery chemistries including two-cell alkaline (up to 3.2 V), Li-ion (up to 4.2 V), or regulated 5 V/9 V/12 V rails without external pre-regulation. Operation beyond 12 V risks permanent damage.
Does the NCP571SN10T1G require an external output capacitor, and what value is recommended?
Yes, the NCP571SN10T1G requires an external output capacitor. The datasheet specifies a minimum value of 0.1 µF ceramic capacitor placed close to the Vout and GND pins. Larger values improve load transient response and noise rejection but are not required for stability-no ESR constraints apply, enabling use of low-cost X5R/X7R MLCCs.
What is the dropout voltage of the NCP571SN10T1G at full load?
At 10 mA output current, the typical dropout voltage of the NCP571SN10T1G is 550 mV; at 150 mA, the maximum dropout is 650 mV (measured at Vout −3%). This means the device maintains regulation as long as Vin ≥ 1.65 V, supporting operation down to near-dead battery voltages in single-cell LiFePO4 or dual-alkaline configurations.
How does the enable pin function on the NCP571SN10T1G?
The enable pin on the NCP571SN10T1G is active-high: pulling it ≥1.3 V (typical) turns the regulator ON, while pulling it ≤0.3 V (typical) disables output and reduces quiescent current to <1 µA. If unused, it must be tied to Vin-floating the pin is not permitted per datasheet guidance.
Is the NCP571SN10T1G suitable for automotive applications?
The NCP571SN10T1G is rated for industrial temperature range (−40 °C to +85 °C) and is not AEC-Q100 qualified. For automotive use, the pin-compatible NCV571SN10T1G variant is specified, which extends operation to +125 °C and includes PPAP documentation and automotive process controls. Use NCP571SN10T1G only in non-automotive portable equipment.
NCP571SN10T1G 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):
- 12V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.65V @ 10mA
- 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
NCP571SN10T1G FAQ
1.How can I place an order for NCP571SN10T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP571SN10T1G 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 NCP571SN10T1G reliable?
The price and inventory of NCP571SN10T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP571SN10T1G is usually 5 days.
3.What payment methods are accepted for NCP571SN10T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP571SN10T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP571SN10T1G?
NCP571SN10T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP571SN10T1G 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 NCP571SN10T1G?
For technical support, including NCP571SN10T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP571SN10T1G requirements.
6.How does Aetrix verify that NCP571SN10T1G is sourced from the original manufacturer or authorized distributors?
All NCP571SN10T1G 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 NCP571SN10T1G meets industry standards.
7.What is the process for return or replacement of NCP571SN10T1G?
All NCP571SN10T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP571SN10T1G, 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 NCP571SN10T1G part is unused and in its original packaging.
Return procedure for NCP571SN10T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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