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onsemi NCP630GD2TR4
- Part No.:
- NCP630GD2TR4
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCP630GD2TR4.pdf
- Description:
- IC REG LINEAR 3.47V 3A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,507
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Product details
Overview
NCP630GD2TR4 from onsemi is a fixed-output, low-dropout linear voltage regulator delivering 3.0 A output current with 3.47 V nominal output voltage, 1.25 V max dropout at full load, ±1.5% output voltage accuracy, and integrated thermal shutdown and current limiting - designed for microprocessor and DSP power supply applications requiring fast transient response and stable post-regulation.
For engineers reviewing the NCP630GD2TR4 datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning of key specs, validated D2PAK pin functions, application-specific implementation guidance, and two confirmed alternative parts with functional and layout-aware selection advice.
Technical Context
The NCP630GD2TR4 implements a single-stage LDO architecture with internal 1.216 V reference trimmed to ±1.5%, enabling precise 3.47 V output via factory-set resistor network. Its fast 25 µs turn-on delay supports dynamic load steps in low-voltage digital systems.
It features a dedicated SENSE pin (Pin 5) for remote voltage sensing, allowing regulation accuracy at the load point despite PCB trace resistance - distinct from the ADJ-pin topology used in the NCP630A variant. Shutdown control is TTL-compatible with 2.0 V turn-on and 0.8 V turn-off thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.47 V ±1.5% (factory-trimmed; eliminates external resistor selection and associated tolerance stack-up) |
| Max Output Current | 3.0 A guaranteed continuous (supports high-current SoC cores without derating at TJ ≤ 125°C) |
| Dropout Voltage | 1.25 V max at 3.0 A (enables operation with Vin as low as 4.72 V for 3.47 V output) |
| Thermal Shutdown | 165°C junction activation (self-protecting during overload or insufficient heatsinking) |
| Ripple Rejection | 85 dB at 1 kHz (suppresses switching noise from upstream SMPS in hybrid power architectures) |
| Output Noise | 210 µVRMS (20 Hz–100 kHz; suitable for noise-sensitive analog/digital mixed-signal rails) |
| Operating Temp | −40°C to +125°C junction range (validated for industrial and automotive under-hood ambient conditions) |
Pinout & Package
Package: D2PAK (Case 936A), surface-mount, thermally enhanced with exposed metal tab (connected to Pin 3 and Tab - both ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Shutdown | TTL-compatible enable input; <0.8 V disables regulator (low quiescent current), >2.0 V enables output |
| 2 | Vin | Main input supply (max 12 V); requires 68 µF input capacitor with ≤5 Ω ESR for stability |
| 3 & Tab | Ground | Power ground return path; tab must be soldered to large PCB copper area for thermal performance |
| 4 | Vout | Regulated 3.47 V output; connects to local load decoupling (33 µF, ≤2 Ω ESR) |
| 5 | Sense | Remote sense input; ties directly to load-side Vout node to compensate for IR drop in power traces |
Key Features
| Feature | Design Value |
|---|---|
| 3.0 A guaranteed output | Delivers full rated current without external current-sharing or parallel devices in compact D2PAK footprint |
| SENSE pin architecture | Enables ±1% regulation accuracy at remote load point, critical when regulator is physically distant from CPU/DSP core |
| 1.25 V dropout @ 3 A | Minimizes power loss (PLOSS = 3.75 W max) and heat generation compared to higher-dropout alternatives |
| 85 dB ripple rejection | Reduces need for additional LC filtering stages when used downstream of buck converters |
| Pb-free D2PAK package | RoHS-compliant construction with G-suffix marking; compatible with standard lead-free reflow profiles |
Applications
| Microprocessor Core Supply | DSP Power Rail |
|---|---|
|
Use Scenario: Powers ARM Cortex-A series or x86 microprocessors requiring tightly regulated 3.47 V rail with fast load-step response. IC Role / Device Role / Timing Role: Primary LDO post-regulator delivering clean, low-noise VCORE after a buck converter. Use Value: 25 µs turn-on delay and 210 µVRMS noise ensure stable boot and deterministic execution under dynamic core frequency scaling. |
Use Scenario: Supplies TI C6000 or Analog Devices SHARC DSPs where analog subsystems demand ultra-low noise. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO for AVDD or I/O supply domains adjacent to ADC/DAC interfaces. Use Value: 85 dB ripple rejection suppresses switching artifacts from adjacent DC/DC converters, preserving SNR in signal chain. |
| SMPS Post-Regulation | Battery Charger Reference |
|
Use Scenario: Final regulation stage in multi-stage power architecture (e.g., 12 V → 5 V buck → 3.47 V LDO). IC Role / Device Role / Timing Role: Precision low-dropout buffer that rejects residual ripple and improves transient immunity. Use Value: SENSE pin compensates for voltage drop across PCB traces between buck output and DSP load, maintaining ±1% accuracy. |
Use Scenario: Provides stable 3.47 V reference for battery charge management ICs (e.g., BQ24xxx) in portable medical devices. IC Role / Device Role / Timing Role: Fixed-output, thermally robust voltage source for precision charge voltage feedback networks. Use Value: −40°C to +125°C operating range and 165°C thermal shutdown ensure reliability in sealed, fanless enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A8300RGRT | 3.0 A, 3.3 V fixed output; 0.5 V dropout typical; uses PMOS pass device; no SENSE pin | Lacks remote sense capability; better suited for local regulation only; higher cost | Select if lower dropout and tighter 1% output tolerance are prioritized over remote sensing |
| MCP1826T-3302E/DB | 3.0 A, 3.3 V fixed output; 1.1 V dropout max; no SENSE pin; 2.5–16 V input range | Wider input range but no load-sense compensation; lower PSRR (70 dB @ 1 kHz) | Choose when board space is constrained and remote sensing is unnecessary; lower BOM cost |
Compared with TPS7A8300RGRT and MCP1826T-3302E/DB, the NCP630GD2TR4 uniquely delivers remote SENSE functionality in a cost-optimized D2PAK package - essential when regulating 3.47 V at the load point across non-negligible PCB impedance.
Availability
NCP630GD2TR4 is available at Aetrix Electronics and suitable for microprocessor power supplies, DSP power rails, and SMPS post-regulation applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP630GD2TR4 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 sensor solutions for automotive, industrial, and cloud infrastructure markets.
The NCP630GD2TR4 belongs to onsemi's high-current LDO family, engineered specifically for post-regulation in compute-intensive systems where low noise, fast transient response, and remote sensing are mandatory design requirements.
FAQ
What is the output voltage tolerance of the NCP630GD2TR4?
The NCP630GD2TR4 has a nominal output voltage of 3.47 V with a total tolerance of ±1.5% over temperature (−40°C to +125°C junction), achieved via on-die trimming of the internal 1.216 V reference. This specification is guaranteed in production and does not require external calibration or resistor matching.
Does the NCP630GD2TR4 require an external resistor network to set output voltage?
No - the NCP630GD2TR4 is a factory-programmed fixed-output variant. Unlike the adjustable NCP630A, it integrates the resistor divider internally, eliminating external components and associated tolerance errors. The 3.47 V output is laser-trimmed during test and permanently set.
How does the SENSE pin on the NCP630GD2TR4 improve regulation accuracy?
The SENSE pin on the NCP630GD2TR4 connects directly to the load-side output node, enabling the regulator to monitor voltage at the point of use rather than at its own Vout pin. This compensates for voltage drop across PCB traces or connectors, maintaining ±1% regulation accuracy even with up to 100 mΩ series resistance.
What thermal considerations apply to the NCP630GD2TR4 in a D2PAK package?
The NCP630GD2TR4 in D2PAK (Case 936A) relies on its exposed metal tab soldered to ≥250 mm² of 2 oz copper for effective heat dissipation. With RJA = 45°C/W and TJ(max) = 165°C, maximum safe power dissipation at 50°C ambient is ~2.6 W - requiring careful layout to avoid thermal throttling at full 3.0 A load.
Can the NCP630GD2TR4 be used in battery-powered systems with variable input voltage?
Yes - the NCP630GD2TR4 supports input voltages from 4.72 V (3.47 V + 1.25 V dropout) up to 12 V, making it suitable for 2-cell Li-ion (8.4 V max) or 3-cell NiMH (4.5 V min) battery systems. Its shutdown pin allows system-level power gating to reduce quiescent current to <50 µA when inactive.
NCP630GD2TR4 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):
- 12V
- Voltage - Output (Min/Fixed):
- 3.47V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.25V @ 3A
- Current - Output:
- 3A
- Current - Quiescent (Iq):
- 1 mA
- Current - Supply (Max):
- 2 mA
- PSRR:
- 85dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCP630GD2TR4 FAQ
1.How can I place an order for NCP630GD2TR4 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP630GD2TR4 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 NCP630GD2TR4 reliable?
The price and inventory of NCP630GD2TR4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP630GD2TR4 is usually 5 days.
3.What payment methods are accepted for NCP630GD2TR4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP630GD2TR4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP630GD2TR4?
NCP630GD2TR4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP630GD2TR4 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 NCP630GD2TR4?
For technical support, including NCP630GD2TR4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP630GD2TR4 requirements.
6.How does Aetrix verify that NCP630GD2TR4 is sourced from the original manufacturer or authorized distributors?
All NCP630GD2TR4 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 NCP630GD2TR4 meets industry standards.
7.What is the process for return or replacement of NCP630GD2TR4?
All NCP630GD2TR4 units undergo pre-shipment inspection (PSI). If there is an issue with NCP630GD2TR4, 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 NCP630GD2TR4 part is unused and in its original packaging.
Return procedure for NCP630GD2TR4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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