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onsemi NCP511SN30T1
- Part No.:
- NCP511SN30T1
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP511SN30T1.pdf
- Description:
- IC REG LINEAR 3V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,342
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Product details
Overview
NCP511SN30T1 from onsemi is a fixed-output, low-dropout linear voltage regulator delivering 3.0 V at up to 150 mA with 40 µA typical quiescent current and 100 mV dropout at 100 mA - designed for battery-powered portable electronics requiring ultra-low power consumption and stable regulation under light-to-moderate load.
For engineers reviewing the NCP511SN30T1 datasheet, pinout, applications, or equivalent options, key selection criteria include its TSOP-5 package footprint, enable-controlled standby mode, ±2.0% output accuracy over −40°C to +85°C, compatibility with 1.0 µF ceramic output capacitors, and thermal shutdown protection.
Technical Context
The NCP511SN30T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit and thermal shutdown) in a single monolithic IC. Its architecture eliminates the need for external compensation and supports stable operation with low-ESR ceramic capacitors as small as 1.0 µF.
It features an active-high Enable input that places the device into ultra-low-power standby (<0.1 µA IQ), and a dedicated N/C pin (Pin 4) confirming no internal connection - critical for PCB layout verification. The regulator operates across 1.5 V to 6.0 V input range while maintaining 3.0 V output with ≤0.8 mV/mA load regulation and 1.0 mV/V line regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±2.0% over −40°C to +85°C - ensures reliable logic-level supply for microcontrollers and sensors without external trimming. |
| Max Output Current | 150 mA - sufficient for powering RF transceivers, display drivers, or sensor signal chains in handheld devices. |
| Dropout Voltage | 100 mV at 100 mA - enables operation from single-cell Li-ion (3.0–4.2 V) or two-cell alkaline (up to 3.2 V) with minimal headroom loss. |
| Quiescent Current | 40 µA typical - extends battery life in always-on monitoring applications such as wearables or IoT endpoints. |
| Input Voltage Range | 0 to 6.0 V - supports direct connection to USB-powered systems or regulated intermediate rails without external pre-regulation. |
| Ripple Rejection | 50 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Shutdown | Activates at ~160°C junction temperature - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
Housed in a Pb-free TSOP-5 surface-mount package (3.00 × 1.50 × 0.95 mm, 0.95 mm pitch), the NCP511SN30T1 uses a standardized 5-pin configuration optimized for compact portable layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts up to 6.0 V; requires local 1.0 µF decoupling capacitor placed adjacent to this pin. |
| 2 | GND | Power ground reference - must be connected to low-impedance system ground plane to ensure stability and noise immunity. |
| 3 | Enable | Active-high digital control - pulls output to high-impedance state when driven low; connect to Vin if unused. |
| 4 | N/C | No internal connection - must remain unconnected; not usable as a test point or auxiliary signal node. |
| 5 | Vout | Regulated 3.0 V output - delivers up to 150 mA with <0.8 mV/mA load regulation; requires ≥1.0 µF ceramic output capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - reduces standby power draw to <120 nW per volt of input, enabling multi-year battery life in low-duty-cycle sensors. |
| Low-ESR capacitor support | Stable with 1.0 µF ceramic output capacitor - eliminates need for tantalum or aluminum electrolytic, lowering BOM cost and board area. |
| Enable-controlled shutdown | Reduces ground current to <0.1 µA - allows system-level power gating of peripheral rails without additional MOSFETs or controllers. |
| ±2.0% output accuracy | Over full temperature and load range - meets tight tolerance requirements for ADC references, analog front-ends, and core logic supplies. |
| Integrated thermal protection | Auto-recovery shutdown at ~160°C - prevents catastrophic failure during transient overloads or inadequate heatsinking. |
Applications
| Portable Medical Sensors | Wireless Sensor Nodes |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery and low-power BLE SoC. IC Role / Device Role / Timing Role: Primary 3.0 V supply for analog sensor interface and BLE radio subsystem. Use Value: 40 µA quiescent current extends 220 mAh CR2032 battery life beyond 2 years in sleep mode; 100 mV dropout preserves runtime as battery discharges to 3.1 V. |
Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity data every 5 minutes via LoRaWAN. IC Role / Device Role / Timing Role: Regulated rail for MCU, RF transceiver, and analog sensor conditioning circuitry. Use Value: TSOP-5 footprint minimizes PCB area; enable pin synchronizes power-up with MCU wake event, eliminating leakage during deep-sleep intervals. |
| Industrial Handheld Scanners | Smart Wearables |
Use Scenario: Rugged barcode scanner powered by removable Li-ion pack with 3.0–4.2 V operating range. IC Role / Device Role / Timing Role: Stable 3.0 V supply for image sensor, laser driver, and decode processor. Use Value: 150 mA output supports peak current during scan bursts; 50 dB ripple rejection isolates sensitive imaging circuitry from DC/DC converter noise. |
Use Scenario: Fitness tracker with optical heart-rate sensor, accelerometer, and Bluetooth LE radio. IC Role / Device Role / Timing Role: Main power rail for mixed-signal SoC and analog front-end. Use Value: ±2.0% output accuracy ensures consistent ADC reference voltage across temperature; industrial-grade −40°C to +85°C rating supports outdoor use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent-current LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300 mA output, 1.6 µA IQ, SOT-23-5 package - higher current but lower quiescent current; no enable pin. | Lacks enable control; unsuitable where system-level power sequencing or dynamic rail disabling is required. | Choose for higher-current, ultra-low-IQ applications without enable functionality; verify thermal performance at 150 mA in SOT-23. |
| TPS7A0530PDBVR | 200 mA output, 25 nA IQ, 6-pin SOT-23 - nanoscale quiescent current, integrated enable, but larger footprint and higher cost. | Requires 6-pin layout; offers tighter 1% accuracy but adds complexity for simple 3.0 V rail needs. | Prefer when sub-µA standby is mandatory and PCB space permits 6-pin SOT-23; avoid if TSOP-5 footprint or cost sensitivity is critical. |
Compared with MCP1700T-3002E/MB and TPS7A0530PDBVR, the NCP511SN30T1 provides optimal balance of ultra-low IQ (40 µA), enable control, TSOP-5 compactness, and proven industrial temperature reliability - making it ideal for space-constrained, battery-sensitive designs where moderate current and precise sequencing matter.
Availability
NCP511SN30T1 is available at Aetrix Electronics and suitable for portable medical sensors, wireless sensor nodes, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and automotive-qualified alternatives (NCV511SN30T1G).
Supply support for NCP511SN30T1 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, cloud, and consumer markets.
The NCP511 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-operated portable electronics demanding ultra-low quiescent current, small footprint, and robust thermal protection.
FAQ
What is the maximum input voltage rating for the NCP511SN30T1?
The NCP511SN30T1 has a maximum input voltage rating of 6.0 V, as specified in the Absolute Maximum Ratings table. Exceeding this voltage risks permanent damage. For applications with input rails above 6.0 V - such as 12 V industrial buses - an external pre-regulator stage is required before the NCP511SN30T1 input.
Does the NCP511SN30T1 require an external capacitor on the Enable pin for stable operation?
No, the NCP511SN30T1 does not require an external capacitor on the Enable pin. The Enable input is CMOS-compatible and functions as a digital control signal; if unused, it must be tied directly to Vin. Adding capacitance may delay turn-on but is not necessary for stability or noise immunity.
Can the NCP511SN30T1 be used with a 10 µF ceramic output capacitor?
Yes, the NCP511SN30T1 is stable with ceramic output capacitors ranging from 1.0 µF to 10 µF and ESR values up to 3.0 Ω. A 10 µF ceramic capacitor improves load transient response and output noise suppression - especially beneficial in applications with pulsed loads like RF transceivers or optical sensors.
What is the thermal shutdown threshold of the NCP511SN30T1, and does it auto-recover?
The NCP511SN30T1 activates thermal shutdown at approximately 160°C junction temperature and auto-recovers once the die cools below the hysteresis threshold (~140°C). This behavior is confirmed in the "Thermal Protection" definition section and typical characteristics curves - ensuring safe, self-resetting operation during temporary overload conditions.
Is the NCP511SN30T1 pin-compatible with other variants in the NCP511 family, such as NCP511SN25T1G?
Yes, all NCP511 variants including NCP511SN30T1 share identical TSOP-5 pinout, package dimensions, and electrical interface - only the output voltage and marking differ. This allows drop-in replacement across 1.5 V to 5.0 V versions without PCB redesign, provided input/output voltage margins and load requirements remain within spec.
NCP511SN30T1 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 100mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 40 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 50dB (1kHz)
- 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
NCP511SN30T1 FAQ
1.How can I place an order for NCP511SN30T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP511SN30T1 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 NCP511SN30T1 reliable?
The price and inventory of NCP511SN30T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP511SN30T1 is usually 5 days.
3.What payment methods are accepted for NCP511SN30T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP511SN30T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP511SN30T1?
NCP511SN30T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP511SN30T1 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 NCP511SN30T1?
For technical support, including NCP511SN30T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP511SN30T1 requirements.
6.How does Aetrix verify that NCP511SN30T1 is sourced from the original manufacturer or authorized distributors?
All NCP511SN30T1 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 NCP511SN30T1 meets industry standards.
7.What is the process for return or replacement of NCP511SN30T1?
All NCP511SN30T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP511SN30T1, 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 NCP511SN30T1 part is unused and in its original packaging.
Return procedure for NCP511SN30T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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