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onsemi NCV59151DS28R4G
- Part No.:
- NCV59151DS28R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV59151DS28R4G.pdf
- Description:
- IC REG LINEAR 2.8V 1.5A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,600
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Product details
Overview
NCV59151DS28R4G from onsemi is an automotive-grade, fixed-output 2.8 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 under-hood power management in FPGA/DSP core supplies.
For engineers reviewing the NCV59151DS28R4G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-qualified thermal and protection behavior, and two confirmed alternative parts with precise functional and application-level distinctions.
Technical Context
The NCV59151DS28R4G implements a high-precision bandgap reference and fast-transient-response error amplifier to maintain ±2.5% output voltage accuracy across –40°C to +125°C, with internal current limiting (2.0–3.0 A), thermal shutdown, and reverse output current protection. Its architecture supports stable operation with ≥47 µF ceramic output capacitors and tolerates up to 13.5 V input.
It integrates CMOS/TTL-compatible EN pin (enable threshold 1.8 V, shutdown threshold 0.8 V) and open-drain FLG pin that asserts low when VOUT drops below 95% of nominal (2.66 V), with hysteresis of 2% (56 mV). Ground current remains ≤60 mA at 1.5 A load, enabling high-efficiency point-of-load regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2.5% over –40°C to +125°C - ensures stable core supply for 2.8 V I/O rails without external feedback components. |
| Max Output Current | 1.5 A continuous - supports high-current FPGA I/O banks or DSP peripherals without derating at TJ ≤ 125°C with proper PCB copper area. |
| Dropout Voltage | 300 mV typical at 1.5 A - enables operation from 3.1 V input (e.g., buck-boost pre-regulator) while maintaining regulation under transient load steps. |
| Ground Current | ≤60 mA at 1.5 A load - minimizes total system power loss; contributes <42 mW dissipation at VIN = 3.1 V, improving thermal margin. |
| Enable Threshold | 1.8 V (enable), 0.8 V (shutdown) - compatible with 1.8 V/3.3 V logic families; allows direct interface to microcontroller GPIO without level shifting. |
| Error Flag Threshold | 95% of VOUT (2.66 V) with 2% hysteresis - provides reliable undervoltage detection for system monitoring without false triggering during load transients. |
| Input Voltage Range | 2.24 V to 13.5 V - supports wide-input industrial and automotive battery-supplied systems, including cold-crank (6.5 V min) and load-dump (18 V max rated). |
| Thermal Protection | Internal thermal shutdown at TJ > 125°C - prevents permanent damage during sustained overload or inadequate heatsinking; auto-recovery on cooldown. |
Pinout & Package
D2PAK-5 package (Case 936A), thermally enhanced with exposed tab connected to GND; 5-pin surface-mount outline measuring 10.16 mm × 8.89 mm × 4.57 mm (L×W×H); RJA = 52°C/W on 100 mm² 2 oz Cu PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 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). |
| 2 | VIN | Main input supply connection; accepts 2.24–13.5 V; must be decoupled with ≥1 µF capacitor placed within 1 inch of pin. |
| 3 | GND | Power ground reference; electrically tied to exposed tab; requires low-impedance PCB plane connection for thermal and noise performance. |
| 4 | VOUT | Regulated 2.8 V output; capable of sourcing 1.5 A; requires ≥47 µF ceramic capacitor at pin for stability and transient response. |
| 5 | FLG | Open-collector error flag; sinks up to 5 mA when VOUT < 2.66 V; requires external pull-up to compatible logic rail (e.g., 3.3 V). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (–40°C to +125°C), PPAP-capable - certified for automotive powertrain and body electronics requiring zero-defect reliability. |
| Fast Transient Response | Stabilizes within 500 µs after 1.5 A load step - maintains <±50 mV output deviation for FPGA core switching events without external compensation. |
| Ceramic-Capacitor Stable | No ESR requirement; works with ≥47 µF X5R/X7R MLCC - eliminates electrolytic capacitor footprint, improves lifetime, and reduces board space. |
| Reverse Output Current Protection | Blocks reverse current flow when VOUT > VIN (up to 6.5 V differential) - prevents backup battery discharge in dual-supply systems. |
| Low Ground Current | 40–60 mA at 1.5 A load - achieves >98% efficiency at VIN = 3.1 V, reducing thermal stress vs. legacy LDOs with >100 mA IGND. |
Applications
| Automotive ADAS Camera Module Power | Industrial PLC I/O Channel Regulator |
|---|---|
Use Scenario: Powers image sensor and ISP ASIC in rear-view camera module operating under vehicle battery (9–16 V) with cold-crank dips to 6.5 V. IC Role / Device Role / Timing Role: Primary 2.8 V point-of-load regulator delivering clean, low-noise supply with fast line transient recovery to maintain image integrity during engine start. Use Value: 300 mV dropout enables regulation down to 3.1 V input, sustaining operation through 6.5 V cold-crank; AEC-Q100 qualification ensures field reliability. |
Use Scenario: Supplies 2.8 V to isolated digital I/O drivers in modular programmable logic controller chassis with shared 12 V backplane. IC Role / Device Role / Timing Role: Local LDO providing ripple-free 2.8 V for high-speed optocoupler interfaces and level-shifting circuitry in noisy industrial environments. Use Value: PSRR >60 dB at 100 kHz suppresses switching noise from adjacent DC-DC converters; FLG pin alerts PLC controller of undervoltage faults. |
| FPGA I/O Bank Supply | Medical Imaging Sensor Interface |
Use Scenario: Delivers 2.8 V to Spartan-7 or Artix-7 FPGA I/O banks requiring tight voltage tolerance and fast load-step response during configuration and data transfer. IC Role / Device Role / Timing Role: Fixed-output LDO with integrated enable and flag, synchronized to FPGA configuration state machine via EN pin. Use Value: ±2.5% output accuracy meets Xilinx I/O spec; 500 µs startup time aligns with FPGA power-on sequencing; ceramic-stable design avoids aging drift. |
Use Scenario: Powers analog front-end (AFE) and ADC driver stages in portable ultrasound probe where EMI-sensitive signal chains require ultra-low-noise supply. IC Role / Device Role / Timing Role: Low-ripple, low-ground-current LDO supplying bias to precision op-amps and reference buffers in battery-powered diagnostic equipment. Use Value: 60 mA max ground current minimizes self-heating near temperature-sensitive sensors; 47 µF ceramic output cap eliminates electrolytic leakage path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170AD280R2G | 2.8 V, 1.2 A, 250 mV dropout at 1.2 A, DFN8 package (3×3 mm), no FLG pin | Lacks error flag and supports lower max current; better suited for space-constrained, non-fault-monitored applications | Select when PCB area is critical and fault reporting is handled externally; verify thermal performance at 1.5 A with smaller DFN8 footprint. |
| MCP1826T-2802E/DB | 2.8 V, 1.5 A, 450 mV dropout at 1.5 A, SOT-223 package, no AEC-Q100 qualification | Higher dropout limits minimum input to 3.25 V; lacks automotive qualification and reverse current protection | Acceptable for commercial-grade industrial use where input voltage stays >3.3 V and automotive compliance is not required. |
Compared with NCV59151DS28R4G, NCV8170AD280R2G trades flag functionality and current headroom for compact size, while MCP1826T-2802E/DB offers cost advantage but sacrifices automotive reliability, dropout performance, and reverse-current blocking-critical for battery-backed systems.
Availability
NCV59151DS28R4G is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial PLC I/O channels, FPGA I/O bank supplies, and medical imaging sensor interfaces requiring stable component supply with long-term lifecycle support.
Supply support for NCV59151DS28R4G 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, with leadership in automotive, industrial, cloud, and IoT markets.
The NCV59150 series was designed specifically for automotive and industrial point-of-load regulation, emphasizing AEC-Q100 reliability, fast transient response, and ceramic-capacitor compatibility in harsh environments.
FAQ
What is the maximum input voltage rating for the NCV59151DS28R4G?
The NCV59151DS28R4G 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 may cause excessive power dissipation or trigger internal protection circuits, and is not guaranteed per datasheet specifications. For automotive load-dump scenarios up to 18 V, external clamping or pre-regulation is advised.
Does the NCV59151DS28R4G require an external output capacitor, and what type is recommended?
Yes, the NCV59151DS28R4G requires an external output capacitor for stability and transient performance. The datasheet specifies ≥47 µF ceramic (X5R/X7R) capacitor at the VOUT pin. Electrolytic or tantalum capacitors are not required or recommended - the device is optimized for low-ESR MLCCs, which improve reliability and reduce board area compared to traditional alternatives.
How does the error flag (FLG) pin behave during normal and fault conditions?
The FLG pin on the NCV59151DS28R4G is an open-collector output that pulls low (≤400 mV at 1 mA sink) when VOUT falls below 95% of nominal (2.66 V), with 2% hysteresis (56 mV). During normal operation, it remains high-impedance and requires an external pull-up resistor. It is overload-protected up to 5 mA sink current, making it robust against accidental short-circuits on the flag line.
Is the NCV59151DS28R4G pin-compatible with other devices in the NCV59150 series?
Yes, all D2PAK-5 variants in the NCV59150 series-including NCV59151DS25R4G, NCV59151DS28R4G, and NCV59151DS33R4G-share identical pinout, package dimensions, and thermal pad layout. This allows drop-in replacement across output voltages without PCB redesign, provided the enable and flag logic levels and load requirements remain compatible.
What thermal considerations apply when using the NCV59151DS28R4G at 1.5 A output current?
At 1.5 A and VIN = 3.1 V, the NCV59151DS28R4G dissipates approximately 0.45 W (ΔV × IOUT + VIN × IGND). With RJA = 52°C/W on a 100 mm² 2 oz Cu PCB, junction temperature rise is ~23°C above ambient. To stay within 125°C max TJ, ambient must remain ≤102°C - achievable with adequate copper pour and airflow. The exposed tab must be soldered to a grounded thermal pad.
NCV59151DS28R4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- 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
NCV59151DS28R4G FAQ
1.How can I place an order for NCV59151DS28R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV59151DS28R4G 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 NCV59151DS28R4G reliable?
The price and inventory of NCV59151DS28R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV59151DS28R4G is usually 5 days.
3.What payment methods are accepted for NCV59151DS28R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV59151DS28R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV59151DS28R4G?
NCV59151DS28R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV59151DS28R4G 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 NCV59151DS28R4G?
For technical support, including NCV59151DS28R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV59151DS28R4G requirements.
6.How does Aetrix verify that NCV59151DS28R4G is sourced from the original manufacturer or authorized distributors?
All NCV59151DS28R4G 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 NCV59151DS28R4G meets industry standards.
7.What is the process for return or replacement of NCV59151DS28R4G?
All NCV59151DS28R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV59151DS28R4G, 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 NCV59151DS28R4G part is unused and in its original packaging.
Return procedure for NCV59151DS28R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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