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onsemi NCV59151DS33R4G
- Part No.:
- NCV59151DS33R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV59151DS33R4G.pdf
- Description:
- IC REG LINEAR 3.3V 1.5A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,725
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Product details
Overview
NCV59151DS33R4G from onsemi is an automotive-grade, fixed-output 3.3 V, 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, open-collector error flag, and AEC-Q100 qualification for operation from −40°C to +125°C. It delivers stable point-of-load power for FPGA core supplies and automotive infotainment processors.
For engineers reviewing the NCV59151DS33R4G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin functions, confirmed thermal performance with RJA = 52°C/W on standard PCB, and real-world substitution guidance for automotive and industrial LDO selection.
Technical Context
The NCV59151DS33R4G integrates a precision bandgap reference, fast-transient-response error amplifier, and current-limited pass transistor optimized for ceramic output capacitors ≥47 µF. Its internal architecture supports stable regulation under rapid load steps up to 1.5 A with minimal output voltage deviation.
It operates within 2.24 V to 13.5 V input range, maintains ±2.5% output voltage accuracy over temperature and load, and includes reverse output current protection during shutdown when VOUT–VIN ≤ 6.5 V. The device uses a dedicated FLG pin for fault detection and EN pin for TTL/CMOS-compatible on/off control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2.5% over −40°C to +125°C; enables direct replacement of legacy 3.3 V logic rails without external feedback components. |
| Max Output Current | 1.5 A continuous; sufficient to power high-current FPGA I/O banks or automotive ADAS sensor interfaces. |
| Dropout Voltage | 300 mV typical at 1.5 A; allows operation from 3.6 V input while maintaining 3.3 V output - critical for battery-powered systems near end-of-discharge. |
| Ground Current | 40–80 mA at 1.5 A load; low quiescent current preserves efficiency in always-on automotive modules. |
| Enable Threshold | 1.8 V min for enable, 0.8 V max for shutdown; compatible with 3.3 V and 5 V logic families without level-shifting. |
| Error Flag | Open-collector FLG pin asserting low when VOUT drops below 95% of nominal (3.135 V); supports system-level fault monitoring and safe shutdown sequencing. |
| Thermal Resistance | RJA = 52°C/W on 100 mm² 2 oz copper; enables 1.5 A operation up to +85°C ambient with standard PCB layout. |
Pinout & Package
D2PAK-5 package (Case 936A), thermally enhanced with exposed tab connected to GND; footprint compatible with industry-standard TO-263-5 layouts and automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Tab) | Thermal Pad / GND | Exposed copper tab electrically tied to GND; must be soldered to large PCB ground plane for thermal dissipation and EMI reduction. |
| 2 | EN | CMOS/TTL-compatible enable input; logic high ≥1.8 V activates regulator; logic low ≤0.8 V places device in ultra-low-IQ shutdown (<5 µA). |
| 3 | VIN | Main input supply pin; accepts 2.24 V to 13.5 V; requires local 1 µF ceramic bypass capacitor placed ≤1 inch from pin. |
| 4 | GND | Power ground reference; connects internally to tab; forms return path for load current and bias currents. |
| 5 | VOUT | Regulated 3.3 V output; designed for direct connection to 47 µF ceramic capacitor; supports fast transient response for digital loads. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified per Grade 1 (−40°C to +125°C) with PPAP capability; meets automotive reliability and traceability requirements for safety-critical subsystems. |
| Reverse Output Current Protection | Prevents reverse current flow from VOUT to VIN when EN = low and VOUT–VIN ≤ 6.5 V; eliminates need for external blocking diode in backup-battery configurations. |
| Fast Transient Response | Stabilizes within microseconds after 1 A load step; minimizes undershoot/overshoot on FPGA or DSP power rails during mode transitions. |
| Ceramic-Capacitor Stable | Guaranteed stability with ≥47 µF X7R/X5R ceramic output capacitor; reduces board area and cost vs. tantalum or electrolytic alternatives. |
| Integrated Fault Monitoring | FLG pin asserts low when output falls below 95% of 3.3 V (3.135 V) with 2% hysteresis; enables host MCU to detect undervoltage before functional failure. |
Applications
| Automotive Infotainment Power | FPGA Core Supply |
|---|---|
|
Use Scenario: Providing clean, regulated 3.3 V to display interface controllers and audio codecs in head-unit systems operating across vehicle battery voltage swings (9–16 V). IC Role / Device Role / Timing Role: Primary post-regulator converting switched-mode supply output to noise-sensitive analog/digital I/O voltage domain. Use Value: 300 mV dropout ensures uninterrupted 3.3 V delivery down to 3.6 V input - critical during cold-crank events where battery dips to 6 V but downstream SMPS may sag further. |
Use Scenario: Delivering stable 3.3 V to FPGA configuration I/O banks requiring fast transient response during partial reconfiguration cycles. IC Role / Device Role / Timing Role: Low-noise linear regulator supplying FPGA I/O voltage rail with tight regulation during dynamic current bursts up to 1.5 A. Use Value: Fast transient response and ceramic-capacitor compatibility minimize voltage droop during 100 ns-scale current steps, preventing I/O timing violations or configuration errors. |
| Industrial PLC I/O Module | Automotive ADAS Sensor Hub |
|
Use Scenario: Powering isolated digital I/O drivers and communication transceivers in programmable logic controller backplanes exposed to wide ambient temperature ranges. IC Role / Device Role / Timing Role: Point-of-load regulator ensuring precise 3.3 V for RS-485 transceivers and optocoupler drivers in harsh industrial environments. Use Value: ±2.5% output accuracy over −40°C to +125°C guarantees reliable logic-level translation and signal integrity without recalibration across thermal cycles. |
Use Scenario: Supplying 3.3 V to radar pre-processing ASICs and camera sensor interfaces in front-end ADAS ECUs mounted near engine compartments. IC Role / Device Role / Timing Role: High-reliability LDO delivering fault-monitored power to vision processing units subject to thermal stress and EMI. Use Value: FLG pin integration enables real-time health monitoring of the 3.3 V rail; combined with AEC-Q100 qualification, supports ASIL-B functional safety decomposition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170AD330R2G | 3.3 V, 1.2 A, DFN8 package; lower current rating and higher RJA (75°C/W); no FLG pin. | Suitable for space-constrained, lower-power automotive modules where fault flag is not required. | Select when board area is critical and peak load stays below 1.2 A; verify thermal margin with reduced copper area. |
| TLD1113-33ES | 3.3 V, 1.5 A, TO-252-5; integrated watchdog timer and diagnostic feedback; higher quiescent current (120 µA). | Targeted at ASIL-B safety applications requiring built-in diagnostics beyond basic voltage monitoring. | Choose when functional safety compliance (e.g., ISO 26262) mandates diagnostic coverage; accept trade-off in ground current and package size. |
Compared with NCV59151DS33R4G, NCV8170AD330R2G offers smaller footprint but sacrifices fault flag functionality and thermal performance, while TLD1113-33ES adds safety diagnostics at the cost of higher IQ and larger TO-252 footprint - making NCV59151DS33R4G optimal for cost-sensitive, high-reliability automotive LDO needs with integrated monitoring.
Availability
NCV59151DS33R4G is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and ADAS sensor hubs requiring stable component supply with AEC-Q100 assurance and long-term lifecycle support.
Supply support for NCV59151DS33R4G 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 technologies for automotive, industrial, cloud, and IoT applications.
The NCV59151DS33R4G belongs to the NCV59150 series of automotive-qualified VLDO regulators, designed specifically for demanding point-of-load power delivery in safety-critical and thermally constrained environments.
FAQ
What is the maximum input voltage rating for NCV59151DS33R4G?
The NCV59151DS33R4G has an absolute maximum input voltage 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 compromise long-term reliability or regulation accuracy. For automotive cold-crank scenarios, the 13.5 V upper limit ensures safe operation during alternator load-dump transients when clamped by external TVS devices.
Does NCV59151DS33R4G require an external output capacitor, and what type is recommended?
Yes, NCV59151DS33R4G requires an external output capacitor for stability and transient performance. The datasheet specifies ≥47 µF ceramic (X7R or X5R) as mandatory; tantalum or electrolytic capacitors are not recommended due to ESR and aging effects that can destabilize the control loop. A 47 µF 0805 or 1206 case-size MLCC placed adjacent to the VOUT and GND pins ensures optimal PSRR and load-step response.
How does the FLG pin on NCV59151DS33R4G behave during an output fault?
The FLG pin on NCV59151DS33R4G is an open-collector output that pulls low (≤400 mV at 1 mA sink) when VOUT drops below 95% of nominal (3.135 V), with 2% hysteresis to prevent chatter. It remains high-impedance otherwise. External pull-up to 3.3 V or 5 V is required; the pin can sink up to 5 mA during fault, enabling direct interfacing with microcontroller GPIOs for system-level fault logging or shutdown sequencing.
Is NCV59151DS33R4G pin-compatible with earlier MIC29150-based designs?
No, NCV59151DS33R4G is not pin-compatible with MIC29150. While both are 3.3 V, 1.5 A LDOs, MIC29150 uses TO-220-5 or SOT-223 packages with different pin assignments (e.g., no dedicated FLG pin). NCV59151DS33R4G uses D2PAK-5 with EN and FLG on pins 2 and 5 respectively. PCB redesign is required; however, it serves as a functional replacement with superior dropout, accuracy, and automotive qualification.
What thermal derating applies to NCV59151DS33R4G at elevated ambient temperatures?
Using RJA = 52°C/W on a standard 100 mm² 2 oz copper pad, NCV59151DS33R4G delivers full 1.5 A up to ~85°C ambient. At 100°C ambient, maximum sustainable output current drops to approximately 1.1 A to maintain TJ ≤ 125°C. Derating curves are provided in Figure 4 of the datasheet; forced airflow or additional copper area can extend usable current at high ambient.
NCV59151DS33R4G 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):
- 3.3V
- 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
NCV59151DS33R4G FAQ
1.How can I place an order for NCV59151DS33R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV59151DS33R4G 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 NCV59151DS33R4G reliable?
The price and inventory of NCV59151DS33R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV59151DS33R4G is usually 5 days.
3.What payment methods are accepted for NCV59151DS33R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV59151DS33R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV59151DS33R4G?
NCV59151DS33R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV59151DS33R4G 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 NCV59151DS33R4G?
For technical support, including NCV59151DS33R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV59151DS33R4G requirements.
6.How does Aetrix verify that NCV59151DS33R4G is sourced from the original manufacturer or authorized distributors?
All NCV59151DS33R4G 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 NCV59151DS33R4G meets industry standards.
7.What is the process for return or replacement of NCV59151DS33R4G?
All NCV59151DS33R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV59151DS33R4G, 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 NCV59151DS33R4G part is unused and in its original packaging.
Return procedure for NCV59151DS33R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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