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onsemi NCP5501DT15G
- Part No.:
- NCP5501DT15G
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCP5501DT15G.pdf
- Description:
- IC REG LINEAR 1.5V 500MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,673
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Product details
Overview
NCP5501DT15G from onsemi is a fixed-output 1.5 V, 500 mA low-dropout linear voltage regulator in DPAK-3 package, featuring 2.9% output voltage accuracy, 230 mV dropout at full load, and thermal shutdown protection. It serves as a post-regulation stage for automotive infotainment power rails and industrial sensor modules requiring stable low-voltage bias under wide input range (2.5 V to 16 V).
For engineers reviewing the NCP5501DT15G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 500 mA, ceramic capacitor stability, reverse bias protection, and −40°C to +85°C ambient operation without enable control.
Technical Context
The NCP5501DT15G uses an internal PNP pass transistor to achieve low dropout voltage while maintaining regulation across its full 500 mA load range. Its error amplifier compares a bandgap reference to the regulated output, enabling tight DC accuracy and stable loop response with low-ESR ceramic capacitors.
No enable pin is present-this variant is optimized for always-on applications where simplicity and minimal external components are prioritized. Protection includes short-circuit current limiting and thermal shutdown triggered at 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.9% (±43.5 mV) over −40°C to +85°C ambient, ensuring reliable logic-level biasing for 1.5 V I/O domains. |
| Max Output Current | 500 mA continuous-supports moderate-power microcontrollers, ADCs, and interface ICs without derating at 25°C. |
| Dropout Voltage | 230 mV at 500 mA load-enables operation from 1.73 V input, critical for battery-backed or SMPS-derived supplies. |
| Ground Current | 20 mA at 500 mA load-low quiescent loss improves system efficiency in always-on embedded nodes. |
| Ripple Rejection | 75 dB at 120 Hz-effectively suppresses switching noise from upstream DC/DC converters in mixed-signal systems. |
| Thermal Shutdown | Activates at 150°C junction temperature-prevents permanent damage during overload or poor heatsinking conditions. |
| Input Voltage Range | 2.5 V to 16 V-compatible with 3.3 V, 5 V, and 12 V supply rails, including automotive transients up to ISO 7637-2 Pulse 5a. |
Pinout & Package
DPAK-3 (Case 369C), surface-mount package with exposed thermal tab (pin 2) for enhanced heat dissipation. Package dimensions: 6.10 mm × 6.54 mm × 2.28 mm, lead pitch 2.29 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Main input supply connection; accepts 2.5–16 V DC; must be decoupled with ≥10 µF ceramic capacitor. |
| 2 (Tab) | GND | Power ground and thermal path; electrically connected to internal die substrate and heatsink pad. |
| 3 | Vout | Regulated 1.5 V output; requires ≥4.7 µF ceramic output capacitor for stability per datasheet Figure 17. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with ceramic capacitors | Guaranteed stable with 1–10 µF X5R/X7R ceramics (no ESR requirement), reducing BOM cost and board space. |
| Reverse bias protection | Prevents reverse current flow when Vout > Vin (up to 7 V differential), protecting upstream sources during hot-swap or fault conditions. |
| Short-circuit protection | Current-limited to ~500–900 mA during output short, preventing catastrophic failure and enabling safe auto-recovery. |
| Pb-free and RoHS compliant | Meets JEDEC J-STD-020 reflow profile for Pb-free soldering; qualified per AEC-Q100 stress test requirements. |
| Low-noise operation | 18 µVRMS output noise (10 Hz–100 kHz) at 1.5 V/1 mA-suitable for noise-sensitive analog signal chains. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Powering CAN transceiver logic and microcontroller I/O banks in door module ECUs. IC Role / Device Role / Timing Role: Primary 1.5 V LDO for low-power digital subsystems, replacing inefficient resistor-zener solutions. Use Value: Enables direct use of 12 V battery rail with <230 mV dropout, eliminating need for intermediate 3.3 V stage and reducing component count. |
Use Scenario: Biasing precision temperature and humidity sensors in factory-floor wireless nodes. IC Role / Device Role / Timing Role: Low-noise, stable 1.5 V supply for analog front-end and ADC reference circuitry. Use Value: 18 µVRMS noise and ±2.9% accuracy ensure <0.1% measurement drift over temperature and line variation. |
| Point-of-Load Regulation | Post-SMPS Filtering |
Use Scenario: Final-stage regulation after buck converter in FPGA core voltage sequencing. IC Role / Device Role / Timing Role: Clean 1.5 V rail for I/O banks requiring ripple-free supply independent of main SMPS switching frequency. Use Value: 75 dB ripple rejection at 120 Hz suppresses residual switching artifacts, improving signal integrity in high-speed interfaces. |
Use Scenario: Decoupling and filtering output of 3.3 V DC/DC converter feeding mixed-signal SoCs. IC Role / Device Role / Timing Role: Low-dropout post-regulator that absorbs transient spikes and reduces conducted EMI. Use Value: Reverse bias protection prevents backfeed into SMPS during shutdown, avoiding latch-up or false wake-up events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/MB | 150 mA max output, SOT-23-3 package, 600 mV dropout at 150 mA | Lower current capacity and higher dropout limit use to ultra-low-power MCU peripherals only | Select when board space is constrained and load never exceeds 150 mA; not suitable for 500 mA loads. |
| TPS7A2015PDQNR | 500 mA, 1.5 V fixed, 165 mV dropout at 500 mA, WSON-6 package with thermal pad | Superior dropout and smaller footprint but lacks reverse bias protection and AEC-Q100 qualification | Choose for consumer-grade portable devices needing minimal dropout; avoid in automotive or harsh environments. |
Compared with MCP1700T-1502E/MB and TPS7A2015PDQNR, the NCP5501DT15G delivers automotive-grade reliability, reverse bias protection, and proven ceramic-capacitor stability at full 500 mA-making it the preferred choice for industrial and automotive point-of-load regulation where robustness and design margin are critical.
Availability
NCP5501DT15G is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, point-of-load regulation, and post-SMPS filtering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCP5501DT15G 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, and sensing technologies for automotive, industrial, and cloud infrastructure markets.
The NCP5501DT15G belongs to the NCP5500/NCP5501 family of low-dropout regulators designed specifically for cost-sensitive, high-reliability applications demanding ceramic-capacitor compatibility, wide input range, and robust protection features.
FAQ
What is the maximum input voltage rating for the NCP5501DT15G?
The NCP5501DT15G supports an absolute maximum input voltage of +18 V, but its recommended operating input range is 2.5 V to 16 V. Operation above 16 V risks exceeding safe operating area limits, especially at elevated temperatures. The device includes reverse bias protection valid up to 7 V differential (Vout − Vin), enhancing robustness in dynamic supply environments.
Does the NCP5501DT15G require an enable pin for operation?
No, the NCP5501DT15G does not include an enable pin-it is a three-terminal fixed-output LDO designed for simple, always-on operation. Unlike the NCP5500 series (DPAK-5/SOIC-8), this DPAK-3 variant omits EN functionality to reduce complexity and cost. Power control must be implemented externally via input switching if needed.
Can the NCP5501DT15G be used with ceramic output capacitors?
Yes, the NCP5501DT15G is explicitly characterized and guaranteed stable with low-ESR ceramic capacitors ranging from 1 µF to 10 µF (X5R/X7R). Figure 17 in the datasheet confirms stable operation across this range at all load currents up to 500 mA, eliminating the need for tantalum or aluminum electrolytic capacitors.
What thermal performance can be expected from the NCP5501DT15G in DPAK-3 package?
In DPAK-3 (Case 369C), the NCP5501DT15G has a junction-to-air thermal resistance (RJA) of 80°C/W and junction-to-case (RJC) of 5.2°C/W. With proper PCB copper pour (≥650 mm², 1 oz), it sustains 500 mA at 1.5 V output up to +85°C ambient before thermal shutdown activates at 150°C junction temperature.
Is the NCP5501DT15G qualified for automotive applications?
The NCP5501DT15G is rated for −40°C to +85°C ambient operation and is Pb-free/RoHS-compliant, but it is not AEC-Q100 qualified. For automotive use, the pin-compatible NCV5501DT15G (−40°C to +125°C, AEC-Q100 qualified, PPAP-capable) is the designated automotive-grade variant-same DPAK-3 package and electrical specs.
NCP5501DT15G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.073V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 500 µA
- Current - Supply (Max):
- 20 mA
- PSRR:
- 75dB ~ 70dB (120hZ ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCP5501DT15G FAQ
1.How can I place an order for NCP5501DT15G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP5501DT15G 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 NCP5501DT15G reliable?
The price and inventory of NCP5501DT15G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP5501DT15G is usually 5 days.
3.What payment methods are accepted for NCP5501DT15G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP5501DT15G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP5501DT15G?
NCP5501DT15G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP5501DT15G 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 NCP5501DT15G?
For technical support, including NCP5501DT15G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP5501DT15G requirements.
6.How does Aetrix verify that NCP5501DT15G is sourced from the original manufacturer or authorized distributors?
All NCP5501DT15G 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 NCP5501DT15G meets industry standards.
7.What is the process for return or replacement of NCP5501DT15G?
All NCP5501DT15G units undergo pre-shipment inspection (PSI). If there is an issue with NCP5501DT15G, 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 NCP5501DT15G part is unused and in its original packaging.
Return procedure for NCP5501DT15G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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