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onsemi NCV4275ADS33R4G
- Part No.:
- NCV4275ADS33R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV4275ADS33R4G.pdf
- Description:
- IC REG LINEAR 3.3V 450MA D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,178
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Product details
Overview
NCV4275ADS33R4G from onsemi is an automotive-grade LDO linear voltage regulator delivering a precise 3.3 V ±2% output at up to 450 mA, featuring integrated active reset with programmable delay, dropout voltage ≤500 mV at 300 mA, and AEC-Q100 Grade 1 qualification for under-hood body electronics applications.
For engineers reviewing the NCV4275ADS33R4G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, thermal design guidance, reset timing behavior, fault protection limits, and automotive supply-chain availability details.
Technical Context
The NCV4275ADS33R4G uses a PNP pass transistor controlled by a bandgap-referenced error amplifier, enabling low dropout (≤500 mV) and high temperature stability (±0.5 mV/K drift). Its reset generator monitors VQ and triggers RO low when output falls below 3.0–3.2 V, with delay set by external capacitor CD on pin D.
Protection includes short-circuit current limiting (450 mA typical trip), thermal shutdown at 150°C, ±42 V reverse voltage tolerance, and +45 V transient immunity. Input operating range is 4.4–42 V for the 3.3 V version, supporting cold-crank and load-dump conditions in automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% - stable regulation across −40°C to +150°C junction temperature and 4.4–42 V input. |
| Max Output Current | 450 mA - sustained delivery without thermal shutdown under proper PCB copper area and ambient conditions. |
| Dropout Voltage | ≤500 mV at 300 mA - enables operation with minimal headroom, critical for low-voltage battery scenarios. |
| Reset Threshold | 3.0–3.2 V - ensures microcontroller reset before logic-level violation; valid down to VQ = 1.0 V. |
| Reset Delay Time | 10–22 ms with 47 nF CD - adjustable via external capacitor for system-specific power-up sequencing. |
| Quiescent Current | 135–200 µA at 1 mA load - ultra-low Iq supports always-on modules without excessive battery drain. |
| Fault Immunity | +45 V peak transient / −42 V reverse voltage - meets ISO 7637-2 pulse 5a/5b and reverse-battery requirements. |
Pinout & Package
DPAK-5 surface-mount package (Case 175AA), thermally enhanced with exposed tab connected internally to GND (Pin 3). Requires minimum 1 oz copper pad area of 168 mm² for RJA = 100.9°C/W or 736 mm² for RJA = 46.8°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1. I | Battery input supply | Bypass to GND with ≥100 nF ceramic capacitor; withstands −42 V to +45 V transients. |
| 2. RO | Open-collector reset output | Pulled low when VQ < 3.0 V; requires external 5.0 kΩ pull-up to VQ for microcontroller interface. |
| 3. GND | Ground reference & thermal path | Internally connected to exposed tab; must be soldered to large copper pour for thermal management. |
| 4. D | Reset timing capacitor node | Charged by internal 2.0–9.0 µA current; sets reset delay (tRD ≈ CD × VDU/ID,C). |
| 5. Q | Regulated 3.3 V output | Stable with 22 µF tantalum/ceramic capacitor (ESR ≤ 3.5 Ω); bypass essential for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +150°C operation - suitable for engine bay and transmission control units. |
| Programmable reset delay | Adjustable from 10–22 ms using standard 47 nF capacitor - eliminates need for external RC timing circuitry. |
| Low dropout architecture | 500 mV max at 300 mA - extends functional runtime during 6 V cold-crank events in 12 V systems. |
| Integrated fault protection | Combines overcurrent, thermal shutdown, reverse-battery, and load-dump immunity - reduces external protection components. |
| Stable with wide ESR range | Compatible with ceramic, tantalum, and aluminum electrolytic capacitors (ESR ≤ 3.5 Ω) - simplifies BOM and layout. |
Applications
| Body Control Module (BCM) | Instrument Cluster |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and LED drivers in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Primary 3.3 V LDO with integrated POR reset for MCU boot sequencing and brown-out detection. Use Value: Eliminates discrete reset IC and reduces component count while meeting ISO 16750-2 electrical stress requirements. | Use Scenario: Supplying display controller, touch interface, and gauge driver ICs in digital instrument panels. IC Role / Device Role / Timing Role: Regulated 3.3 V source with accurate reset assertion to prevent display corruption during ignition cycles. Use Value: Ensures deterministic power-up timing across temperature and battery voltage variations (4.4–42 V input range). |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Providing clean 3.3 V rail for LTE/GNSS SoC, memory, and secure element in connected vehicle gateways. IC Role / Device Role / Timing Role: Always-on LDO with ultra-low quiescent current (135–200 µA) and fail-safe reset signaling. Use Value: Enables >10-year battery-backed sleep mode compliance while maintaining rapid wake-up readiness. | Use Scenario: Powering image sensor, ISP, and serializer in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Secondary regulated rail with transient immunity to suppress noise coupling into analog video paths. Use Value: Maintains stable 3.3 V under load-dump pulses (ISO 7637-2 Pulse 5), preventing image artifacts or frame loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV4275ADT33RKG | DPAK-5 package, same electrical specs, 2500-piece tape-and-reel vs. 800-piece reel for NCV4275ADS33R4G. | Identical function and pinout; differs only in packaging format and reel quantity. | Select based on production volume and SMT line feed requirements - both are drop-in replacements. |
| TLV73333PDBVR | 300 mA output, 250 mV dropout, no reset output, non-automotive grade (−40°C to +125°C). | Lacks reset functionality and AEC-Q100 qualification; unsuitable for safety-critical or harsh-environment use. | Only consider for cost-sensitive, non-automotive industrial applications where reset and extended temperature are not required. |
Compared with NCV4275ADT33RKG, NCV4275ADS33R4G offers identical performance in D2PAK packaging with higher thermal resistance but larger heatsinking capability; versus TLV73333PDBVR, it adds automotive qualification, reset, and 450 mA drive - essential for body electronics reliability.
Availability
NCV4275ADS33R4G is available at Aetrix Electronics and suitable for automotive body electronics, instrument clusters, telematics control units, and ADAS camera modules requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for NCV4275ADS33R4G 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, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCV4275A product line delivers automotive-qualified LDO regulators with integrated reset and robust fault protection, designed specifically for body electronics, infotainment, and ADAS subsystems operating in harsh environments.
FAQ
What is the maximum input voltage the NCV4275ADS33R4G can withstand during load dump?
The NCV4275ADS33R4G is rated for +45 V peak transient voltage per ISO 7637-2 Pulse 5, making it suitable for 12 V automotive systems experiencing load-dump events. This rating applies across the full operating temperature range and does not require external clamping diodes.
Does the NCV4275ADS33R4G require an external pull-up resistor on the RO pin?
Yes, the RO pin is open-collector and requires an external pull-up resistor-typically 5.0 kΩ-to the 3.3 V output (Q pin) to generate a valid logic-high signal for microcontroller reset input. Without this resistor, RO cannot assert a high state during normal operation.
Can the NCV4275ADS33R4G operate with a 4.0 V input voltage?
No-the NCV4275ADS33R4G has a minimum input voltage of 4.4 V for reliable 3.3 V regulation. At 4.0 V input, the device enters dropout and cannot maintain regulated output, potentially causing system reset or malfunction.
What is the thermal resistance (RJA) of the NCV4275ADS33R4G in standard PCB layout?
The NCV4275ADS33R4G (D2PAK package) achieves RJA = 74.8°C/W on a 0.4 sq. in. spreader board and 41.6°C/W on a 1.2 sq. in. board. These values assume 1 oz copper; actual thermal performance depends on copper area, layer count, and airflow.
Is the reset delay time of the NCV4275ADS33R4G adjustable, and how is it calculated?
Yes-the reset delay is set by capacitor CD on pin D. Using tRD = CD × VDU / ID,C, a 47 nF capacitor yields 10–22 ms delay (typical 16 ms), based on upper threshold VDU = 0.7–1.6 V and charge current ID,C = 2.0–9.0 µA.
NCV4275ADS33R4G 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):
- 42V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.17V @ 300mA
- Current - Output:
- 450mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 35 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Reset
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
NCV4275ADS33R4G FAQ
1.How can I place an order for NCV4275ADS33R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4275ADS33R4G 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 NCV4275ADS33R4G reliable?
The price and inventory of NCV4275ADS33R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4275ADS33R4G is usually 5 days.
3.What payment methods are accepted for NCV4275ADS33R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4275ADS33R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4275ADS33R4G?
NCV4275ADS33R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4275ADS33R4G 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 NCV4275ADS33R4G?
For technical support, including NCV4275ADS33R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4275ADS33R4G requirements.
6.How does Aetrix verify that NCV4275ADS33R4G is sourced from the original manufacturer or authorized distributors?
All NCV4275ADS33R4G 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 NCV4275ADS33R4G meets industry standards.
7.What is the process for return or replacement of NCV4275ADS33R4G?
All NCV4275ADS33R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4275ADS33R4G, 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 NCV4275ADS33R4G part is unused and in its original packaging.
Return procedure for NCV4275ADS33R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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