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onsemi NCP511SN30T1G
- Part No.:
- NCP511SN30T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP511SN30T1G.pdf
- Description:
- IC REG LINEAR 3V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,892
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Product details
Overview
NCP511SN30T1G from onsemi is a fixed-output, CMOS-based low-dropout linear regulator delivering 3.0 V at up to 150 mA with ultra-low 40 µA quiescent current and 100 mV dropout at 100 mA. It integrates PMOS pass transistor, thermal shutdown, current limit, and enable control - designed for battery-powered portable electronics requiring stable low-power voltage regulation.
For engineers reviewing the NCP511SN30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at load, quiescent current vs. temperature, enable threshold behavior, output accuracy over −40°C to +85°C, and compatibility with 1.0 µF ceramic output capacitors.
Technical Context
The NCP511SN30T1G uses a PMOS pass transistor architecture enabling low dropout and near-zero ground current increase under load. Its internal error amplifier compares output against a precision voltage reference, while protection circuits enforce current limit (200–800 mA depending on input) and thermal shutdown at ~160°C.
Enable functionality provides logic-level control: device turns on when Enable ≥1.3 V and off when Enable ≤0.3 V. The regulator operates stably with 1.0 µF ceramic output capacitance and requires no minimum load, supporting high PSRR (50 dB @ 1 kHz) and low output noise (110 µVRMS).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±2.0% over −40°C to +85°C - ensures stable MCU core or sensor supply within tight tolerance. |
| Max Output Current | 150 mA - sufficient for low-power microcontrollers, RF modules, and analog sensors. |
| Dropout Voltage | 100 mV at 100 mA - enables operation with minimal headroom (e.g., 3.1 V input for 3.0 V output). |
| Quiescent Current | 40 µA typical at 1 mA load - extends battery life in always-on or sleep-mode applications. |
| Input Voltage Range | 0 to 6.0 V - compatible with single-cell Li-ion (4.2 V), 2xAA (3.2 V), or regulated 5 V rails. |
| Enable Threshold | Turn-on at ≥1.3 V, turn-off at ≤0.3 V - supports direct GPIO control without level-shifting. |
| Thermal Shutdown | Activates at ~160°C - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
The NCP511SN30T1G is housed in a Pb-free TSOP-5 surface-mount package (3.00 × 1.50 × 0.95 mm, 0.95 mm pitch), optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts up to 6.0 V; must be decoupled with ≥1.0 µF capacitor near the pin. |
| 2 | GND | Power ground reference - connects to system ground plane; critical for noise and thermal performance. |
| 3 | Enable | Active-high enable input - pull to Vin for always-on operation; tie to MCU GPIO for controlled power sequencing. |
| 4 | N/C | No internal connection - left unconnected; not electrically bonded or functional. |
| 5 | Vout | Regulated 3.0 V output - requires ≥1.0 µF ceramic capacitor; ESR from 0 to 3.0 Ω supported. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - reduces standby power loss in battery-critical systems like wearables and remote sensors. |
| Low dropout voltage | 100 mV at 100 mA - preserves usable battery capacity down to ~3.1 V input for 3.0 V output. |
| High output accuracy | ±2.0% over full temperature range - eliminates need for external trimming in precision analog or ADC reference paths. |
| Stable with ceramic capacitors | Supports 1.0 µF min output capacitance - lowers BOM cost and board area vs. tantalum or electrolytic alternatives. |
| Integrated protection | Current limit + thermal shutdown - prevents damage during short-circuit or thermal overload without external components. |
Applications
| Portable Medical Sensors | IoT Edge Node Power |
|---|---|
Use Scenario: Wearable pulse oximeter powered by coin cell or small LiPo battery. IC Role / Device Role / Timing Role: Primary 3.0 V supply for optical sensor IC, ADC, and BLE SoC during active and sleep cycles. Use Value: 40 µA quiescent current extends battery life beyond 6 months; 100 mV dropout allows operation until battery drops to 3.1 V. |
Use Scenario: Battery-operated environmental sensor node transmitting data via LoRaWAN every 10 minutes. IC Role / Device Role / Timing Role: Regulated 3.0 V rail for microcontroller, temperature/humidity sensor, and transceiver during brief transmit bursts. Use Value: Stable ±2.0% output ensures consistent ADC reference and radio PA biasing; 1.0 µF ceramic cap simplifies layout in compact enclosure. |
| Industrial Handheld Meters | Automotive Body Control Modules |
Use Scenario: Rugged handheld multimeter using alkaline AA batteries with auto-ranging display and serial interface. IC Role / Device Role / Timing Role: Clean 3.0 V supply for LCD driver, precision op-amps, and UART transceiver across varying battery voltage (4.5 V → 2.4 V). Use Value: Line regulation of 1.0 mV/V minimizes measurement drift during battery discharge; enable pin enables power gating between readings. |
Use Scenario: Low-power door module with occupancy detection, LED status, and CAN wake-up capability. IC Role / Device Role / Timing Role: Secondary 3.0 V LDO for microcontroller I/O and sensor interface, powered from 5 V body bus rail. Use Value: AEC-Q100 qualified NCV variant available; thermal shutdown prevents latch-up during hot-car ambient conditions (85°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300 mA rating, 1.6 µA quiescent current, SOT-23-5 package - higher current but lower IQ. | Better suited for higher-load applications where <1 µA standby is critical (e.g., energy harvesting). | Select if >150 mA output or sub-µA IQ required; verify thermal derating at 150 mA in SOT-23. |
| TPS70630DRVR | 300 mA, 1.7 µA IQ, 175 mV dropout at 100 mA, WSON-6 package - lower IQ but higher dropout. | Preferred for ultra-low-power systems with ample input headroom (e.g., 3.3 V rail powering 3.0 V load). | Choose when minimizing standby current outweighs dropout penalty; not suitable for <3.2 V inputs. |
Compared with NCP511SN30T1G, MCP1700T-3002E/MB offers higher output current and dramatically lower quiescent current but requires larger PCB footprint and lacks integrated thermal shutdown. TPS70630DRVR delivers superior IQ and PSRR but sacrifices dropout performance - making NCP511SN30T1G optimal for space-constrained, battery-voltage-limited designs needing balanced efficiency and protection.
Availability
NCP511SN30T1G is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, industrial handheld meters, and automotive body control modules requiring stable component supply with guaranteed long-term availability.
Supply support for NCP511SN30T1G 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-powered portable equipment demanding ultra-low quiescent current, small footprint, and robust protection in harsh thermal environments.
FAQ
What is the maximum input voltage for the NCP511SN30T1G?
The NCP511SN30T1G supports an absolute maximum input voltage of 6.0 V. Exceeding this rating may cause permanent damage. For reliable operation with higher input sources (e.g., 12 V), an external pre-regulator stage is required - as documented in Figure 22 of the datasheet. The device's internal protection does not extend to overvoltage beyond 6.0 V.
Does the NCP511SN30T1G require an external output capacitor, and what type is recommended?
Yes, the NCP511SN30T1G requires a minimum 1.0 µF output capacitor for stability. Ceramic capacitors are fully supported and preferred due to low ESR and size; tantalum types are also acceptable. The regulator is stable with ESR values from 0 Ω up to 3.0 Ω, eliminating the need for ESR tuning common in older LDOs.
How does the enable pin function on the NCP511SN30T1G?
The Enable pin on the NCP511SN30T1G is active-high: the device powers up when voltage exceeds 1.3 V (typical) and shuts down when pulled below 0.3 V (typical). If unused, it must be tied directly to Vin - floating the pin may cause erratic operation. No external pull-up resistor is needed when connected to Vin.
What is the thermal shutdown threshold for the NCP511SN30T1G?
The NCP511SN30T1G activates thermal shutdown at approximately 160°C junction temperature. Once triggered, the output disables until the die cools sufficiently - typically by >20°C hysteresis - before automatic recovery. This protects against sustained overload or inadequate PCB copper area, especially under 150 mA load at elevated ambient temperatures.
Is the NCP511SN30T1G suitable for automotive applications?
The NCP511SN30T1G is the commercial-grade version; however, its automotive-qualified counterpart NCV511SN30T1G is AEC-Q100 qualified and PPAP capable. Both share identical electrical specs and pinout, but only the NCV prefix part meets automotive reliability and traceability requirements. For non-automotive use, NCP511SN30T1G remains fully suitable.
NCP511SN30T1G 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
NCP511SN30T1G FAQ
1.How can I place an order for NCP511SN30T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP511SN30T1G 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 NCP511SN30T1G reliable?
The price and inventory of NCP511SN30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP511SN30T1G is usually 5 days.
3.What payment methods are accepted for NCP511SN30T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP511SN30T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP511SN30T1G?
NCP511SN30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP511SN30T1G 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 NCP511SN30T1G?
For technical support, including NCP511SN30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP511SN30T1G requirements.
6.How does Aetrix verify that NCP511SN30T1G is sourced from the original manufacturer or authorized distributors?
All NCP511SN30T1G 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 NCP511SN30T1G meets industry standards.
7.What is the process for return or replacement of NCP511SN30T1G?
All NCP511SN30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP511SN30T1G, 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 NCP511SN30T1G part is unused and in its original packaging.
Return procedure for NCP511SN30T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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