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onsemi NCV59301DS18R4G
- Part No.:
- NCV59301DS18R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV59301DS18R4G.pdf
- Description:
- IC REG LINEAR 1.8V 3A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,999
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Product details
Overview
NCV59301DS18R4G from onsemi is an automotive-grade, 3.0 A very low-dropout (VLDO) linear regulator with fixed 1.8 V output, D2PAK-5 package, 300 mV typical dropout at 3.0 A, and integrated enable/flag pins for system monitoring and control - used in FPGA core power, automotive infotainment SoC rails, and post-regulation of DC/DC converters.
For engineers reviewing the NCV59301DS18R4G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal behavior, functional pin roles, real-world use cases, and validated alternative parts for automotive and industrial point-of-load designs.
Technical Context
The NCV59301DS18R4G implements a PMOS pass transistor architecture enabling ultra-low dropout and fast transient response. It operates across 2.24 V to 13.5 V input range while maintaining ±2.5% output voltage accuracy over –40°C to +125°C junction temperature.
Its integrated error flag (open-collector, active-low) triggers below 95% of nominal VOUT with 2% hysteresis, and the CMOS/TTL-compatible enable pin draws only 1–40 µA depending on logic state - supporting low-power sequencing and fault reporting in safety-critical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.5% over full load (10 mA–3 A) and temperature (–40°C to +125°C) |
| Max Output Current | 3.0 A continuous; current limit trips at 3.5–5.0 A under short-circuit |
| Dropout Voltage | 300 mV typical at 3.0 A load - enables operation with minimal VIN–VOUT margin (e.g., 2.1 V input for 1.8 V output) |
| Ground Current | 60–120 mA at 3.0 A load - directly impacts system efficiency and thermal design |
| PSRR | ≥60 dB at 1 kHz (COUT = 47 µF ceramic) - suppresses switching noise from upstream DC/DC stages |
| Enable Threshold | EN high ≥1.8 V (enable), EN low ≤0.8 V (shutdown); leakage <5 µA in shutdown |
| Error Flag Threshold | Active-low FLG asserts when VOUT falls below 95% of 1.8 V (i.e., ≤1.71 V), with 2% hysteresis |
Pinout & Package
D2PAK-5 surface-mount package (Case 936A) with exposed thermal tab electrically connected to GND - requires minimum 100 mm² copper pour for RJA = 52°C/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Logic-level enable input | CMOS/TTL compatible; drives regulator ON/OFF; <5 µA shutdown current |
| 2 - VIN | Main input supply connection | Accepts 2.24–13.5 V; powers internal circuitry and load; max rating 18 V |
| 3 - GND | Power and signal reference ground | Common return for VIN, VOUT, EN, FLG; tied to exposed thermal tab |
| 4 - VOUT | Regulated output terminal | Delivers stable 1.8 V up to 3.0 A; requires ≥47 µF ceramic output capacitor |
| 5 - FLG | Open-collector error flag output | Active-low indicator of VOUT fault; sinks up to 5 mA; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified for automotive applications (Grade 1: –40°C to +125°C TJ); PPAP capable |
| Reverse output current protection | Withstands VOUT–VIN up to 6.5 V during shutdown - enables backup battery operation without reverse conduction |
| Ceramic-capacitor stable | No ESR requirements; supports compact, low-ESR 47 µF+ X7R/X5R ceramics for space-constrained PCBs |
| Fast transient response | Settles within microseconds after load steps (e.g., FPGA core current bursts); shown in Figure 15 |
| Thermal shutdown | Internally disables output when TJ exceeds +125°C; auto-recovers after cooldown |
Applications
| Automotive Infotainment SoC Core Rail | FPGA I/O Bank Power |
|---|---|
|
Use Scenario: Powers 1.8 V I/O banks of automotive-grade FPGAs in head-unit and ADAS domain controllers where input rail varies between 3.3 V and 12 V due to vehicle battery transients. IC Role / Device Role / Timing Role: Point-of-load (POL) linear regulator providing clean, low-noise 1.8 V with fast line/load transient recovery to prevent I/O timing violations. Use Value: 300 mV dropout allows regulation from 2.1 V input - critical during cold-crank (6.0 V battery dip); FLG pin alerts host MCU of undervoltage before data corruption occurs. |
Use Scenario: Supplies 1.8 V to configurable I/O banks of Xilinx Artix-7 or Intel Cyclone V FPGAs in industrial PLCs, requiring precise voltage and sequencing control. IC Role / Device Role / Timing Role: Secondary regulator following a 3.3 V buck converter; provides low-noise, ripple-free voltage for high-speed LVDS and MIPI interfaces. Use Value: PSRR >60 dB at 1 kHz suppresses switching noise from upstream DC/DC; EN pin enables synchronized power-up with FPGA configuration clock. |
| Post-Regulation for DC/DC Converters | Automotive Camera Module Core Supply |
|
Use Scenario: Final-stage regulation after a 2.5 V buck converter in server memory modules, where tight voltage tolerance and low noise are mandatory for DDR4/DDR5 VDDQ rails. IC Role / Device Role / Timing Role: Low-dropout post-regulator improving DC accuracy and AC noise rejection beyond what the primary switcher can achieve. Use Value: ±2.5% output accuracy over temperature ensures compliance with DDR4 VDDQ spec (1.2 V ±30 mV); ground current <120 mA minimizes heat in dense DIMM layouts. |
Use Scenario: Powers image sensor and ISP core logic (e.g., Sony IMX series, Ambarella CV22) in rear-view and surround-view cameras operating in –40°C to +105°C ambient. IC Role / Device Role / Timing Role: Automotive-qualified LDO delivering 1.8 V to sensor digital cores with fault detection and thermal resilience. Use Value: AEC-Q100 Grade 1 qualification and built-in thermal shutdown ensure reliability under hood temperatures; FLG pin integrates with camera ECU watchdog for fail-safe shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170AD180R2G | 2.0 A output, 1.8 V fixed, DFN-8 package; lower current, smaller footprint, no FLG pin | Suitable for space-constrained, lower-current automotive sensors - lacks fault reporting capability | Select when board area is critical and system-level fault monitoring is handled externally |
| TLD6512-18ES | 3.0 A, 1.8 V, integrated watchdog and diagnostic registers; SPI interface; larger SO-14 package | Used in ASIL-B systems requiring diagnostics and communication - adds complexity and cost | Select when functional safety (ISO 26262) diagnostics and register-readback are required |
Compared with NCV59301DS18R4G, NCV8170AD180R2G offers smaller size but sacrifices current capability and fault signaling, while TLD6512-18ES adds SPI diagnostics at the cost of layout complexity and BOM count - making NCV59301DS18R4G the optimal balance of automotive qualification, integrated monitoring, and thermal performance for mid-complexity LDO applications.
Availability
NCV59301DS18R4G is available at Aetrix Electronics and suitable for automotive infotainment systems, FPGA power delivery, and industrial camera modules requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for NCV59301DS18R4G 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 focused on energy-efficient electronics, with leadership in automotive, industrial, cloud, and IoT power management solutions.
The NCV59300/59301 series is part of onsemi's automotive-qualified LDO portfolio, designed specifically for high-current, low-noise point-of-load regulation in safety-critical vehicle subsystems and industrial edge devices.
FAQ
What is the maximum input voltage rating for NCV59301DS18R4G?
The NCV59301DS18R4G has an absolute maximum input voltage (VIN) rating 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 impact reliability or trigger internal protection circuits. The 18 V rating allows tolerance for automotive load-dump transients when properly clamped externally.
Does NCV59301DS18R4G require an external pull-up resistor on the FLG pin?
Yes, NCV59301DS18R4G features an open-collector FLG output that requires an external pull-up resistor to a valid logic voltage (e.g., 3.3 V or 5 V). The FLG pin sinks up to 5 mA during fault conditions, so the resistor value must be selected to ensure sufficient voltage level for the host controller while limiting current - typically 10 kΩ for 3.3 V systems.
Can NCV59301DS18R4G operate with a 2.0 V input voltage?
No, NCV59301DS18R4G cannot operate with a 2.0 V input. Its minimum recommended input voltage is 2.24 V - below this, regulation fails and output drops out of specification. At 1.8 V output and 300 mV typical dropout, the minimum functional VIN is 2.1 V, but the datasheet specifies 2.24 V as the guaranteed lower limit for stable operation across temperature and process variation.
Is the thermal pad of NCV59301DS18R4G electrically connected, and how should it be routed?
Yes, the exposed thermal tab (TAB) of NCV59301DS18R4G is internally connected to GND. It must be soldered to a dedicated GND plane with ≥100 mm² of 2 oz copper for thermal performance (RJA = 52°C/W). Vias under the tab are strongly recommended to transfer heat to inner or bottom layers - floating or unconnected tabs severely degrade thermal capability and risk thermal shutdown.
How does the enable pin behavior differ between NCV59301DS18R4G and the D2PAK-3 version NCV59300DS18R4G?
Both NCV59301DS18R4G (D2PAK-5) and NCV59300DS18R4G (D2PAK-3) share identical enable logic thresholds (EN ≥1.8 V = active, ≤0.8 V = shutdown) and leakage (<5 µA in shutdown). However, only the D2PAK-5 variant includes the FLG pin; the D2PAK-3 version omits FLG and EN - making NCV59301DS18R4G the only choice when both enable control and fault reporting are required in the same device.
NCV59301DS18R4G 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 3A
- Current - Output:
- 3A
- 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
NCV59301DS18R4G FAQ
1.How can I place an order for NCV59301DS18R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV59301DS18R4G 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 NCV59301DS18R4G reliable?
The price and inventory of NCV59301DS18R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV59301DS18R4G is usually 5 days.
3.What payment methods are accepted for NCV59301DS18R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV59301DS18R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV59301DS18R4G?
NCV59301DS18R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV59301DS18R4G 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 NCV59301DS18R4G?
For technical support, including NCV59301DS18R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV59301DS18R4G requirements.
6.How does Aetrix verify that NCV59301DS18R4G is sourced from the original manufacturer or authorized distributors?
All NCV59301DS18R4G 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 NCV59301DS18R4G meets industry standards.
7.What is the process for return or replacement of NCV59301DS18R4G?
All NCV59301DS18R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV59301DS18R4G, 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 NCV59301DS18R4G part is unused and in its original packaging.
Return procedure for NCV59301DS18R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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