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onsemi NCP571SN08T1G
- Part No.:
- NCP571SN08T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP571SN08T1G.pdf
- Description:
- IC REG LINEAR 0.8V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,530
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Product details
Overview
NCP571SN08T1G from onsemi is a fixed-output, low-dropout linear voltage regulator delivering 150 mA at 0.8 V with ultra-low 4.0 µA typical quiescent current, PMOS pass transistor architecture, ±3% output accuracy at 25°C, and operation across −40°C to +85°C - designed for battery-powered handheld instruments requiring stable low-voltage bias.
For engineers reviewing the NCP571SN08T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (max 850 mV at 10 mA), enable threshold (1.3 V logic-high turn-on), thermal shutdown protection, TSOP-5 package compatibility, and support for 0.1 µF ceramic output capacitors.
Technical Context
The NCP571SN08T1G implements a PMOS-based LDO topology with internal voltage reference, error amplifier, and protection circuits including current limit and thermal shutdown. It operates with input voltages up to 12 V and maintains regulation down to 0.8 V output while sustaining 150 mA load current.
Enable control is implemented via a dedicated logic-level input (VTH(EN) = 1.3 V) that places the device in low-power standby when pulled low; unused Enable pins must be tied to VIN. The regulator is stable with 0.1 µF ceramic output capacitance and exhibits no ESR dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.8 V ±3% at 25°C; ±4% over full temperature range - enables precise core biasing for low-voltage microcontrollers. |
| Max Input Voltage | 12 V - supports direct connection to common battery rails (e.g., 9 V alkaline, 3S Li-ion). |
| Quiescent Current | 4.0 µA typical - extends battery life in always-on sensor nodes and portable instrumentation. |
| Dropout Voltage | 850 mV max at 10 mA load - allows operation with minimal headroom (e.g., 1.65 V input for 0.8 V output). |
| Output Current | 150 mA continuous - sufficient for powering single-core MCUs, RF transceivers, or analog front-ends. |
| Operating Temp | −40°C to +85°C - qualified for industrial and consumer portable equipment environments. |
| Enable Threshold | 1.3 V logic-high turn-on - compatible with 1.8 V and 3.3 V GPIO without level-shifting. |
Pinout & Package
The NCP571SN08T1G is housed in a Pb-free TSOP-5 surface-mount package (Case 483, 3.00 × 1.50 × 0.95 mm, 0.95 mm pitch) with exposed pad not present. Thermal resistance RJA = 250°C/W (1 oz Cu, 100 mm²).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 0.8 V output; requires ≥0.1 µF ceramic capacitor to GND for stability. |
| 2 | GND | Power ground reference; must be low-impedance connection to minimize noise and thermal rise. |
| 3 | Enable | Active-high logic input; pulls low to disable regulator and reduce IQ to <1 µA; tie to VIN if unused. |
| 4 | VIN | Input supply (0–12 V); decoupled with 0.1 µF ceramic capacitor placed adjacent to pin. |
| 5 | NC | No internal connection; manufacturer recommends connecting to GND for mechanical stability and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 4.0 µA typical enables >1-year battery life in 10 µA average-load IoT sensors. |
| PMOS pass transistor | Eliminates need for external bypass capacitor and ensures zero reverse current flow. |
| 0.1 µF ceramic capacitor stability | Reduces BOM cost and PCB area vs. traditional LDOs requiring tantalum or high-ESR caps. |
| Integrated protection | Current limit and thermal shutdown prevent damage during overload or poor heatsinking conditions. |
| Pb-free TSOP-5 package | RoHS-compliant, reflow-solderable footprint compatible with standard SMT assembly lines. |
Applications
| Battery-Powered Instruments | Hand-Held Test Equipment |
|---|---|
Use Scenario: Portable multimeter powered by two AA cells (3.0 V nominal) supplying 0.8 V to an ultra-low-power ADC and display controller. IC Role / Device Role / Timing Role: Primary voltage regulator providing clean, stable 0.8 V rail for precision analog signal chain and digital logic. Use Value: 4.0 µA IQ extends battery life beyond 500 hours of active use; 0.1 µF output cap simplifies layout in space-constrained enclosures. | Use Scenario: Pocket-sized oscilloscope with ARM Cortex-M4 MCU and 12-bit SAR ADC operating from a 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: Core power regulator delivering 0.8 V to MCU VDDCORE, enabling dynamic voltage scaling and lowest active power mode. Use Value: 850 mV dropout allows operation down to 1.65 V input, maximizing usable battery capacity; enable pin supports instant wake/sleep transitions. |
| Camcorders & Digital Cameras | Wearable Health Monitors |
Use Scenario: Image sensor interface board in a compact camcorder requiring low-noise 0.8 V supply for CIS analog front-end and PLL circuitry. IC Role / Device Role / Timing Role: Low-noise LDO supplying regulated bias to image sensor analog blocks and clock generation circuitry. Use Value: High PSRR and 0.1 µF ceramic stability suppress switching noise from nearby DC/DC converters; ±3% accuracy ensures consistent sensor gain calibration. | Use Scenario: ECG patch using coin-cell battery (3.0 V) to power ultra-low-power MCU, analog front-end, and BLE radio subsystem. IC Role / Device Role / Timing Role: System-level LDO generating 0.8 V for MCU core domain and sensor signal conditioning circuitry. Use Value: Enables sub-10 µA system sleep current; TSOP-5 footprint fits within 10 × 10 mm wearable PCB real estate constraints. |
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-0802E/TT | 400 mV typical dropout at 100 mA; 1.8 µA IQ; SOT-23-5 package; ±2% initial accuracy. | Lower dropout improves efficiency at light loads but lacks thermal shutdown; smaller package limits power dissipation. | Select for ultra-low IQ priority in thermally benign environments where 150 mA peak load is rare. |
| Torex XC6206P082MR-G | 250 mV typical dropout at 100 mA; 1 µA IQ; SOT-23-5; ±2% accuracy; no enable pin. | Minimal IQ and dropout ideal for energy-harvesting systems, but lacks enable control and thermal protection. | Select when enable functionality and fault protection are unnecessary and minimum static power dominates design requirements. |
Compared with MCP1700T-0802E/TT and XC6206P082MR-G, the NCP571SN08T1G provides higher output current (150 mA vs. 250 mA max for MCP1700, 250 mA for XC6206), integrated thermal shutdown, and an enable pin - making it suitable for portable instruments needing robustness and moderate load capability in a compact TSOP-5 footprint.
Availability
NCP571SN08T1G is available at Aetrix Electronics and suitable for battery-powered instruments, hand-held test equipment, and camcorders requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for NCP571SN08T1G 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.
The NCP571 series belongs to onsemi's precision low-IQ LDO product line, engineered specifically for portable battery-operated devices demanding extended runtime, small form factor, and reliable regulation under variable load and temperature conditions.
FAQ
What is the maximum input voltage rating for the NCP571SN08T1G?
The NCP571SN08T1G has a maximum input voltage rating of 12 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. This rating allows direct use with common battery sources such as 9 V alkaline, 3S Li-ion (up to 12.6 V), or regulated 12 V rails in portable equipment.
Does the NCP571SN08T1G require an external pull-up resistor on the Enable pin?
No, the NCP571SN08T1G does not require an external pull-up resistor on the Enable pin. If the enable function is unused, the datasheet explicitly states the pin should be connected directly to VIN. Leaving the pin floating is not recommended due to potential instability or unintended enable/disable behavior.
Can the NCP571SN08T1G operate with a 0.1 µF ceramic output capacitor?
Yes, the NCP571SN08T1G is explicitly designed to be stable with a minimum 0.1 µF ceramic output capacitor, as confirmed in both the Features section and Applications Information. Larger values improve transient response and noise rejection but are not required for basic stability.
What is the dropout voltage specification for the NCP571SN08T1G at full load?
The dropout voltage for the NCP571SN08T1G is specified as 850 mV maximum at 10 mA output current and measured at VOUT − 3.0%. At 150 mA full load, the datasheet does not provide a direct value, but the typical dropout increases - Figure 9 shows VOUT regulation maintained down to ~1.65 V input at 150 mA, implying ~850 mV effective dropout remains valid for design margining.
Is the NCP571SN08T1G pin-compatible with other variants in the NCP571 family?
Yes, all TSOP-5 packaged NCP571 variants (e.g., NCP571SN09T1G, NCP571SN10T1G) share identical pinout and package dimensions. The only functional difference is the factory-trimmed output voltage; no PCB redesign is needed when substituting between 0.8 V, 0.9 V, 1.0 V, or 1.2 V versions in the same TSOP-5 footprint.
NCP571SN08T1G 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):
- 0.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.85V @ 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
NCP571SN08T1G FAQ
1.How can I place an order for NCP571SN08T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP571SN08T1G 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 NCP571SN08T1G reliable?
The price and inventory of NCP571SN08T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP571SN08T1G is usually 5 days.
3.What payment methods are accepted for NCP571SN08T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP571SN08T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP571SN08T1G?
NCP571SN08T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP571SN08T1G 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 NCP571SN08T1G?
For technical support, including NCP571SN08T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP571SN08T1G requirements.
6.How does Aetrix verify that NCP571SN08T1G is sourced from the original manufacturer or authorized distributors?
All NCP571SN08T1G 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 NCP571SN08T1G meets industry standards.
7.What is the process for return or replacement of NCP571SN08T1G?
All NCP571SN08T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP571SN08T1G, 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 NCP571SN08T1G part is unused and in its original packaging.
Return procedure for NCP571SN08T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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