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onsemi NCV59151DS50R4G
- Part No.:
- NCV59151DS50R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV59151DS50R4G.pdf
- Description:
- IC REG LINEAR 5V 1.5A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:386
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Product details
Overview
NCV59151DS50R4G from onsemi is an automotive-grade, 5.0 V fixed-output, 1.5 A very low-dropout (VLDO) linear regulator in D2PAK-5 package, featuring 300 mV typical dropout at full load, ±2.5% output voltage accuracy over temperature and load, and integrated reverse output current protection - used for post-regulation of FPGA core supplies in automotive ADAS domain controllers.
For engineers reviewing the NCV59151DS50R4G datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q100 qualification, thermal shutdown with 125°C junction limit, logic-compatible enable input, open-collector error flag, and stable operation with ceramic output capacitors ≥47 µF.
Technical Context
The NCV59151DS50R4G implements a high-precision bandgap reference with internal feedback network set to 5.0 V nominal output, delivering regulated power under fast load transients while maintaining stability with low-ESR ceramic capacitors. Its architecture integrates CMOS-compatible enable logic and open-drain fault signaling tied to output voltage monitoring at ±5% threshold with 2% hysteresis.
It operates across 2.24 V to 13.5 V input range, supports shutdown current <5 µA, and includes linear current limiting (2.0–3.0 A), thermal shutdown, and reverse current blocking when VIN is absent - critical for battery-backed systems where VOUT may exceed VIN during backup operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2.5% over −40°C to +125°C and 10 mA–1.5 A load - ensures compatibility with 5 V logic interfaces and USB peripheral rails. |
| Dropout Voltage | 300 mV typical at 1.5 A - enables regulation from 5.3 V input, minimizing power loss in low-headroom automotive supply chains. |
| Ground Current | 40–80 mA at 1.5 A load - directly impacts system efficiency and thermal design margin in high-current point-of-load applications. |
| Enable Threshold | 1.8 V min enable / 0.8 V max shutdown - compatible with 3.3 V and 5 V microcontroller GPIO without level shifting. |
| Error Flag Threshold | 95% of nominal VOUT (4.75 V) with 2% hysteresis - provides robust undervoltage detection before downstream logic fails. |
| Input Voltage Range | 2.24 V to 13.5 V - supports direct connection to 12 V battery rail with transient tolerance up to 18 V absolute max. |
| Thermal Shutdown | Activates at TJ = +125°C - protects against sustained overload or poor heatsinking in enclosed automotive enclosures. |
Pinout & Package
D2PAK-5 package (Case 936A) with exposed tab thermally and electrically connected to GND - requires PCB copper pour for thermal management and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | EN | CMOS/TTL-compatible enable input; logic high >1.8 V enables regulator, low <0.8 V places device in ultra-low-IQ shutdown mode. |
| 2 | VIN | Main input supply pin; accepts 2.24–13.5 V; must be decoupled with ≥1 µF ceramic capacitor within 1 inch of pin. |
| 3 | GND | Power ground reference; connects internally to exposed tab - must be soldered to large PCB ground plane for thermal and electrical integrity. |
| 4 | VOUT | Regulated 5.0 V output; capable of sourcing 1.5 A continuous; requires ≥47 µF ceramic output capacitor for stability. |
| 5 | FLG | Open-collector error flag; sinks up to 5 mA when VOUT drops below 4.75 V; requires external pull-up to valid logic rail. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified for automotive applications per Grade 1 (−40°C to +125°C), PPAP-capable - meets functional safety requirements for ADAS and body control modules. |
| Reverse output current protection | Blocks reverse current flow when VOUT > VIN (up to 6.5 V differential), enabling safe use with backup batteries or hot-swap scenarios. |
| Fast transient response | Maintains output regulation during 100 mA–1.5 A load steps with minimal undershoot/overshoot - critical for powering FPGA I/O banks during configuration bursts. |
| Stable with ceramic capacitors | Guaranteed stable with ≥47 µF X5R/X7R ceramic output caps - eliminates need for costly tantalum or electrolytic capacitors and reduces board area. |
| Low ground current at full load | 60 mA typical IGND at 1.5 A output - improves overall system efficiency compared to legacy LDOs with >100 mA quiescent current. |
Applications
| Automotive ADAS Domain Controller Power | FPGA Core Supply Regulation |
|---|---|
Use Scenario: Provides clean 5.0 V rail to interface logic and transceivers in radar/Ethernet domain controllers operating in engine bay environments. IC Role / Device Role / Timing Role: Primary post-regulator converting switched-mode 6–12 V battery-derived supply to noise-immune 5 V for SerDes PHYs and CAN FD transceivers. Use Value: AEC-Q100 qualification and −40°C to +125°C operation ensure reliability under thermal cycling; FLG pin enables real-time health monitoring by MCU. |
Use Scenario: Powers configuration I/O banks of Xilinx Zynq UltraScale+ MPSoC during boot and runtime in vehicle infotainment gateways. IC Role / Device Role / Timing Role: Low-noise, fast-response LDO supplying 5 V to FPGA bank voltage rails requiring tight regulation during dynamic current surges. Use Value: 300 mV dropout allows operation from 5.3 V intermediate rail, reducing heat generation; ceramic capacitor compatibility simplifies layout and improves EMI performance. |
| Industrial PLC I/O Module Regulation | Server Management Controller (BMC) Auxiliary Rail |
Use Scenario: Delivers isolated 5 V to digital isolators and RS-485 transceivers in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Point-of-load regulator converting 12 V backplane supply to 5 V for communication interface ICs with strict noise and transient immunity requirements. Use Value: Reverse current blocking prevents backfeeding into upstream DC/DC during brownout; thermal shutdown protects against enclosure overheating in sealed cabinets. |
Use Scenario: Supplies auxiliary 5 V rail to Baseboard Management Controller and sensor hub in telecom server chassis with redundant 12 V inputs. IC Role / Device Role / Timing Role: Secondary LDO providing always-on 5 V for BMC firmware execution and environmental monitoring during main CPU sleep states. Use Value: <5 µA shutdown current extends standby time; EN pin enables coordinated power sequencing with main VRMs via PMBus commands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8664CDT50RKG | 500 mA output, 350 mV dropout at 500 mA, no error flag, DPAK package | Limited to lower-current peripherals; lacks fault reporting capability | Select when cost sensitivity outweighs current requirement and diagnostics needs. |
| TLD5098EL | 250 mA, integrated watchdog timer, TSD only, HTSSOP-8 package | Designed for LED driver bias rails; not rated for 1.5 A loads or AEC-Q100 Grade 1 | Choose only for non-safety-critical sub-500 mA auxiliary rails where watchdog functionality is required. |
Compared with NCV59151DS50R4G, NCV8664CDT50RKG offers lower cost but sacrifices 3× output current and diagnostic capability, while TLD5098EL adds watchdog features irrelevant to general-purpose 5 V regulation and cannot support the same load or temperature range.
Availability
NCV59151DS50R4G is available at Aetrix Electronics and suitable for automotive ADAS systems, industrial PLCs, and server BMC designs requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for NCV59151DS50R4G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The NCV59150 series was designed specifically for high-reliability automotive power management, emphasizing low dropout, fast transient response, and integrated protection features for demanding under-hood and chassis-mounted ECUs.
FAQ
What is the maximum input voltage rating for NCV59151DS50R4G?
The NCV59151DS50R4G has an absolute maximum input voltage of 18 V, but its recommended operating range is 2.24 V to 13.5 V. Operation above 13.5 V is not guaranteed and may compromise long-term reliability or parametric performance - always maintain VIN ≤13.5 V in normal operation. The 18 V rating applies only to short-duration transients defined in ISO 7637-2.
Does NCV59151DS50R4G require an external resistor divider for output voltage setting?
No, NCV59151DS50R4G is a fixed-output 5.0 V regulator and does not require an external resistor divider. Unlike the adjustable NCV59152 variant, this part integrates the feedback network internally. The ADJ pin is absent; pin 5 is FLG (error flag), and output voltage is factory-trimmed to 5.0 V ±2.5% across temperature and load.
How is thermal performance affected by PCB layout for NCV59151DS50R4G?
Thermal performance of NCV59151DS50R4G depends critically on PCB copper area connected to its exposed tab (pin 3/GND). With 100 mm² of 2 oz copper, RJA is 52°C/W; insufficient copper increases junction temperature rapidly. At 1.5 A and 1 V dropout, power dissipation is ~1.5 W - requiring ≥4 cm² thermal pad to keep TJ <125°C at 85°C ambient.
Can NCV59151DS50R4G be used without the enable (EN) pin connected?
Yes, NCV59151DS50R4G defaults to enabled when EN is left floating or tied to VIN. However, best practice is to tie EN to VIN through a 10 kΩ resistor or directly connect it to ensure deterministic startup. Leaving EN unconnected risks noise-induced toggling in high-EMI environments; for guaranteed disable, drive EN <0.8 V with active logic.
What output capacitor value and type are required for stable operation of NCV59151DS50R4G?
NCV59151DS50R4G requires a minimum 47 µF ceramic capacitor (X5R or X7R dielectric) at the VOUT pin, placed as close as possible to the device. Larger values (e.g., 100 µF) improve PSRR and transient response. Electrolytic or tantalum capacitors are not required or recommended - the regulator is optimized exclusively for low-ESR ceramic types.
NCV59151DS50R4G 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):
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCV59151DS50R4G FAQ
1.How can I place an order for NCV59151DS50R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV59151DS50R4G 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 NCV59151DS50R4G reliable?
The price and inventory of NCV59151DS50R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV59151DS50R4G is usually 5 days.
3.What payment methods are accepted for NCV59151DS50R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV59151DS50R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV59151DS50R4G?
NCV59151DS50R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV59151DS50R4G 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 NCV59151DS50R4G?
For technical support, including NCV59151DS50R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV59151DS50R4G requirements.
6.How does Aetrix verify that NCV59151DS50R4G is sourced from the original manufacturer or authorized distributors?
All NCV59151DS50R4G 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 NCV59151DS50R4G meets industry standards.
7.What is the process for return or replacement of NCV59151DS50R4G?
All NCV59151DS50R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV59151DS50R4G, 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 NCV59151DS50R4G part is unused and in its original packaging.
Return procedure for NCV59151DS50R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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