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onsemi NCP59151DS25R4G
- Part No.:
- NCP59151DS25R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCP59151DS25R4G.pdf
- Description:
- IC REG LINEAR 2.5V 1.5A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,768
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Product details
Overview
NCP59151DS25R4G from onsemi is a 2.5 V fixed-output, 1.5 A very low-dropout (VLDO) linear regulator in D2PAK-5 package, featuring 300 mV typical dropout at full load, logic-compatible enable input, and open-collector error flag output. It delivers stable point-of-load power for FPGA core supplies and industrial point-of-regulation applications with ceramic output capacitor support.
For engineers reviewing the NCP59151DS25R4G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The NCP59151DS25R4G implements a high-precision VLDO architecture with internal reference trimmed to ±1% output voltage accuracy over temperature and load. Its fast transient response is enabled by optimized internal compensation and compatibility with low-ESR ceramic capacitors ≥47 µF.
It integrates CMOS/TTL-compatible enable logic (1.8 V threshold), open-collector fault flag (active-low, 95% VOUT threshold), thermal shutdown, current limiting (2.0–3.0 A), and reverse output current protection-enabling robust operation in battery-backed and post-regulation systems where input voltage may dip below output during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2.5% over −40°C to +125°C; enables direct replacement of legacy 2.5 V LDOs without external feedback components. |
| Max Output Current | 1.5 A continuous; supports FPGA I/O banks and DSP core rails requiring stable high-current bias under dynamic load steps. |
| Dropout Voltage | 300 mV typical at 1.5 A; allows operation from 2.75 V input to deliver 2.5 V output-critical for low-voltage battery or intermediate bus systems. |
| Ground Current | 40–80 mA at 1.5 A load; minimizes total system power loss in always-on subsystems such as industrial sensor interfaces. |
| Enable Threshold | 1.8 V high-enable / 0.8 V low-disable; ensures clean sequencing with standard 3.3 V or 1.8 V logic controllers without level-shifting. |
| Error Flag Threshold | 95% VOUT low-going activation with 2% hysteresis; provides reliable undervoltage detection for system-level fault logging and safe shutdown. |
| Input Voltage Range | 2.24 V to 13.5 V operating; accommodates wide-input industrial supplies and automotive transients up to 18 V absolute max. |
Pinout & Package
D2PAK-5 package (Case 936A) with exposed tab thermally and electrically connected to GND; requires minimum 100 mm² copper area for RJA = 52°C/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Tab) | Thermal Pad / GND | Primary heat path; must be soldered to PCB ground plane for thermal integrity and EMI control. |
| 2 | EN | CMOS/TTL-compatible enable input; drives regulator ON/OFF with <5 µA shutdown current. |
| 3 | VIN | Main input supply rail; accepts up to 13.5 V continuous; decoupling capacitor required within 1 inch. |
| 4 | GND | Power ground reference; connects internally to exposed tab; forms return path for load and bias currents. |
| 5 | VOUT | Regulated 2.5 V output; stable with ≥47 µF ceramic capacitor; supports fast load transients in FPGA/DSP applications. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with ceramic output caps | Eliminates need for tantalum or aluminum electrolytic capacitors-reducing board space, cost, and failure risk in long-life industrial designs. |
| Fast transient response | Delivers <500 µs startup time and tight regulation during 10–90% load steps-essential for powering FPGA configuration logic and memory interfaces. |
| Reverse output current protection | Prevents backflow when VIN drops below VOUT (e.g., backup battery scenarios), avoiding unintended discharge and system instability. |
| Integrated thermal shutdown | Disables output at 125°C junction temperature and auto-recovers upon cooling-protecting against sustained overload or poor heatsinking. |
| Logic-level enable & error flag | Enables seamless integration into microcontroller-based power management trees without external level shifters or comparators. |
Applications
| Industrial Point-of-Regulation | FPGA Core Power Supply |
|---|---|
Use Scenario: Local 2.5 V rail generation on PLC I/O modules with 12 V or 24 V input bus. IC Role / Device Role / Timing Role: Primary low-noise, high-current LDO delivering stable bias to analog front-end circuitry and isolated communication ICs. Use Value: 300 mV dropout enables operation from 2.75 V input-extending usable range of aging DC-DC converters and reducing thermal stress. |
Use Scenario: Dedicated 2.5 V supply for Spartan-7 FPGA I/O banks requiring fast load step response and low ripple. IC Role / Device Role / Timing Role: Post-regulator after switching converter; provides clean, sequenced voltage with enable/flag for configuration state monitoring. Use Value: Ceramic-capacitor stability and <500 µs startup meet Xilinx FPGA power-up timing requirements without external compensation. |
| Server Memory Buffer | Battery-Charged IoT Sensor Node |
Use Scenario: 2.5 V supply for DDR4 register clock drivers in enterprise storage controllers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO filtering switch-mode noise before high-speed clock distribution networks. Use Value: >60 dB PSRR at 100 kHz suppresses switching ripple from upstream 5 V buck converters-preventing jitter in memory timing paths. |
Use Scenario: Regulated 2.5 V rail for ultra-low-power MCU and environmental sensors powered by Li-ion battery with 3.0–4.2 V range. IC Role / Device Role / Timing Role: Primary system regulator enabling deep-sleep modes via EN pin; flag signals brownout to wake controller. Use Value: 1.0–5.0 µA shutdown current extends battery life; 95% VOUT flag threshold triggers graceful shutdown before MCU reset threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC29150-2.5WU | Same 2.5 V fixed output, 1.5 A rating, but uses TO-263-5 package with higher RJA (60°C/W); no integrated error flag. | Lacks FLG pin-requires external comparator for fault monitoring; less suitable for safety-critical industrial nodes. | Select when footprint compatibility with legacy MIC29xx designs is required and flag functionality is handled externally. |
| TPS7A4701RGWR | 2.5 V fixed, 1 A max output, 350 µVrms ultra-low noise, DFN-20 package; no enable or flag pins. | Lower noise ideal for precision ADC references, but insufficient current for FPGA loads; no power sequencing support. | Choose only for low-noise analog signal chains-not for digital load regulation where NCP59151DS25R4G's 1.5 A and flag features are essential. |
Compared with MIC29150-2.5WU and TPS7A4701RGWR, the NCP59151DS25R4G uniquely combines 1.5 A delivery, integrated enable/flag, ceramic-capacitor stability, and D2PAK-5 thermal performance-making it the only option among the three qualified for FPGA I/O and industrial PLC point-of-regulation with built-in fault reporting.
Availability
NCP59151DS25R4G is available at Aetrix Electronics and suitable for FPGA power supplies, industrial PLC modules, and battery-powered sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCP59151DS25R4G 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 solutions for automotive, industrial, and cloud infrastructure markets.
The NCP59150 series was designed specifically for high-current, low-dropout point-of-load regulation in FPGA, DSP, and server applications-emphasizing fast transient response, ceramic capacitor compatibility, and integrated protection features.
FAQ
What is the maximum input voltage rating for NCP59151DS25R4G?
The NCP59151DS25R4G has an absolute maximum input voltage of 18 V, but its recommended operating range is 2.24 V to 13.5 V. Operating above 13.5 V risks exceeding safe junction temperature limits and invalidates parametric guarantees-even if within absolute ratings-due to increased power dissipation and thermal stress on the D2PAK-5 package.
Does NCP59151DS25R4G require an external feedback resistor network?
No, the NCP59151DS25R4G is a fixed 2.5 V output device and does not require external feedback resistors. Its internal reference and trimming eliminate the need for external components-unlike the adjustable NCP59152 variant. This simplifies layout, reduces BOM count, and improves long-term voltage stability in industrial environments.
How does the error flag (FLG) pin function on NCP59151DS25R4G?
The NCP59151DS25R4G does not include an FLG pin-it is a 5-pin D2PAK-5 fixed-voltage variant with pins EN, VIN, GND, VOUT, and Tab/GND. Only the 8-pin DFN8 versions (e.g., NCP59151MN25TYG) and adjustable D2PAK-5 variants (e.g., NCP59152DSADJR4G) feature the FLG or ADJ pin. Confusion arises from shared series documentation; pin count and function are package- and variant-specific.
What output capacitor value is required for stable operation of NCP59151DS25R4G?
The NCP59151DS25R4G requires a minimum 47 µF ceramic output capacitor for guaranteed stability and optimal transient response. The datasheet confirms compatibility with X5R/X7R dielectrics and specifies that larger values improve high-frequency noise suppression and load-step recovery-critical for FPGA and DSP applications where rapid current changes occur.
Is NCP59151DS25R4G qualified for automotive applications?
No, the NCP59151DS25R4G is not AEC-Q100 qualified. For automotive use, the NCV59151DS25R4G variant-identical in electrical specs and package but with NCV prefix, PPAP capability, and automotive-grade process controls-is specified. The "NCP" prefix denotes commercial/industrial grade; mixing prefixes risks non-compliance with automotive qualification requirements.
NCP59151DS25R4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Error Flag
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCP59151DS25R4G FAQ
1.How can I place an order for NCP59151DS25R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP59151DS25R4G 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 NCP59151DS25R4G reliable?
The price and inventory of NCP59151DS25R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP59151DS25R4G is usually 5 days.
3.What payment methods are accepted for NCP59151DS25R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP59151DS25R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP59151DS25R4G?
NCP59151DS25R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP59151DS25R4G 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 NCP59151DS25R4G?
For technical support, including NCP59151DS25R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP59151DS25R4G requirements.
6.How does Aetrix verify that NCP59151DS25R4G is sourced from the original manufacturer or authorized distributors?
All NCP59151DS25R4G 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 NCP59151DS25R4G meets industry standards.
7.What is the process for return or replacement of NCP59151DS25R4G?
All NCP59151DS25R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCP59151DS25R4G, 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 NCP59151DS25R4G part is unused and in its original packaging.
Return procedure for NCP59151DS25R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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