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onsemi NCV8772CDT334RKG
- Part No.:
- NCV8772CDT334RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
NCV8772CDT334RKG.pdf
- Description:
- IC REG LINEAR LDO 3.3V D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
NCV8772CDT334RKG from onsemi is a 350 mA, 3.3 V ultra-low-quiescent-current LDO regulator with integrated reset output (RO), enable (EN) control, and AEC-Q100 Grade 1 qualification for automotive microprocessor power supply. It delivers ±2% output voltage accuracy, supports input voltages up to 40 V, and maintains regulation down to 4.5 V input - ideal for body control modules and instrument clusters requiring persistent battery operation.
For engineers reviewing the NCV8772CDT334RKG datasheet, pinout, applications, or equivalent options, key selection criteria include its 18 µA typical quiescent current, 16 ms reset delay, 93% output voltage reset threshold, reverse output current protection, and DPAK-5 package thermal performance (RJA = 47.1 °C/W).
Technical Context
The NCV8772CDT334RKG integrates a precision bandgap reference, error amplifier, pass transistor, and dedicated reset comparator with hysteresis. Its reset function triggers when VOUT drops below 93% of nominal (3.069 V at 3.3 V output) and holds low for 16 ms, meeting automotive cold-cranking and brown-out detection requirements.
Enable logic uses TTL-compatible thresholds (VTH(EN) = 0.8–2.5 V), reducing quiescent current to ≤1 µA in shutdown. Protection includes current limiting (400–1100 mA), thermal shutdown at 175 °C, and reverse output current blocking - all implemented in a single monolithic die optimized for harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% - ensures stable MCU core/I/O rail within automotive temperature range (−40 °C to +150 °C). |
| Max Output Current | 350 mA - sufficient for mid-complexity automotive microcontrollers and peripheral ICs without external boost. |
| Quiescent Current | 18 µA typ / 24 µA max - enables >1-year battery standby in always-on modules (e.g., door ECU, seat controller). |
| Input Voltage Range | 4.5 V to 40 V - covers full automotive battery range including load dump (45 V transient) and cold-crank (4.5 V minimum). |
| Reset Delay Time | 16 ms - provides deterministic deassertion timing after VOUT recovery, compatible with common MCU reset timeout windows. |
| Dropout Voltage | 440 mV max at 350 mA - allows operation with minimal headroom (e.g., 3.74 V input sustains 3.3 V output at full load). |
| PSRR | 75 dB at 100 Hz - suppresses alternator ripple and switching noise before reaching sensitive digital loads. |
Pinout & Package
DPAK-5 (Case 175AA) package with exposed thermal pad (Pin 3/TAB connected to GND). Optimized for high-power dissipation on 1 oz copper PCBs (RJA = 47.1 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1. Vin | Positive input supply | Accepts 4.5–40 V DC; requires 0.1 µF ceramic decoupling capacitor placed adjacent to pin for stability and transient immunity. |
| 2. RO | Reset open-drain output | Active-low signal; requires external 5–100 kΩ pull-up to VOUT; asserts when VOUT falls below 3.069 V (93% of 3.3 V) for ≥16 ms. |
| 3. GND / TAB | Power ground & thermal path | Primary return path for load current; exposed metal tab must be soldered to large copper pour for thermal management. |
| 4. EN | Enable control input | Logic-high (>1.65 V) enables regulator; logic-low (<0.8 V) disables output and reduces IQ to ≤1 µA. |
| 5. Vout | Regulated output | Delivers 3.3 V ±2%; requires ≥1 µF output capacitor (ceramic or tantalum) with ESR < 5 Ω for stability across load and temperature. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 | Qualified for −40 °C to +125 °C ambient operation - meets automotive electronics reliability and qualification standards. |
| Reverse Output Current Protection | Blocks reverse current flow from VOUT to VIN when EN = low or input is absent - prevents battery drain in system-level backfeed scenarios. |
| Wide Output Capacitor ESR Tolerance | Stable with 0.01–100 Ω ESR - eliminates need for specialized low-ESR capacitors and simplifies BOM across production lots. |
| EMC Compliant | Meets automotive electromagnetic compatibility requirements without external filtering - reduces board area and design validation effort. |
| Integrated Reset Pull-up (5 V variant only) | Not applicable to NCV8772CDT334RKG - this 3.3 V variant uses open-drain RO requiring external pull-up; avoids false resets during low-VOUT transitions. |
Applications
| Body Control Module | Instruments and Clusters |
|---|---|
Use Scenario: Powering door module microcontroller and LIN transceivers in sleep mode with battery connected continuously. IC Role / Device Role / Timing Role: Primary 3.3 V LDO with reset supervision for MCU boot integrity and brown-out detection. Use Value: 18 µA quiescent current extends vehicle battery life beyond 1 year in valet/transport mode; 16 ms reset delay aligns with MCU internal POR timing. | Use Scenario: Supplying display controller and CAN interface IC in digital instrument cluster with ignition-off memory retention. IC Role / Device Role / Timing Role: Regulated 3.3 V rail with RO-driven system reset during battery voltage sag during cold cranking. Use Value: 40 V input rating withstands ISO 16750-2 load dump; 93% reset threshold ensures reliable detection before MCU functional failure. |
| Occupant Protection and Comfort | Powertrain |
Use Scenario: Providing backup power to seat position memory EEPROM and heater control logic during ignition cycling. IC Role / Device Role / Timing Role: Always-on LDO with EN-controlled shutdown during deep sleep; RO signals MCU on undervoltage events. Use Value: Reverse output current protection prevents parasitic discharge through other system rails; ±2% accuracy maintains sensor ADC reference stability. | Use Scenario: Powering engine control unit (ECU) diagnostic circuitry and non-critical sensors during key-off monitoring. IC Role / Device Role / Timing Role: Secondary 3.3 V regulator supporting CAN FD transceiver bias and wake-up interrupt logic. Use Value: Thermal shutdown at 175 °C protects against under-hood overheating; 350 mA output supports multi-sensor polling without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8772CDS334R4G | D2PAK-5 package (RJA = 42.3 °C/W); same electrical specs and 16 ms reset delay. | Better thermal performance for higher ambient or continuous 350 mA loads; larger footprint and different mounting requirements. | Select when board layout allows larger D2PAK-5 and junction temperature margin is critical above 100 °C ambient. |
| TLV73333PDBVR | 300 mA, 3.3 V LDO; 35 µA IQ; no integrated reset; SOT-23-5 package; not AEC-Q100 qualified. | Limited to non-automotive or infotainment subsystems where reset supervision and automotive qualification are not required. | Choose only for cost-sensitive consumer-grade designs lacking automotive environmental or safety requirements. |
Compared with NCV8772CDS334R4G, the NCV8772CDT334RKG offers identical regulation and reset functionality in a smaller DPAK-5 footprint but with 4.8 °C/W higher thermal resistance - acceptable for intermittent 350 mA loads. Versus TLV73333PDBVR, it adds automotive qualification, reset, and ultra-low IQ, at the cost of package size and price.
Availability
NCV8772CDT334RKG is available at Aetrix Electronics and suitable for body control modules, instrument clusters, occupant protection systems, and powertrain diagnostics requiring stable component supply across automotive production lifecycles.
Supply support for NCV8772CDT334RKG 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 for automotive, industrial, cloud, and IoT applications.
The NCV8772C series is part of onsemi's automotive-qualified power management portfolio, designed specifically for robust, low-IQ microprocessor power in harsh vehicle environments - emphasizing AEC-Q100 compliance, wide input range, and integrated system supervision.
FAQ
What is the exact reset threshold voltage for NCV8772CDT334RKG?
The NCV8772CDT334RKG has a fixed 93% output voltage reset threshold. For its 3.3 V nominal output, this corresponds to 3.069 V (93% × 3.3 V). The reset output (RO) goes low when VOUT drops below this value and remains asserted for the programmed 16 ms delay. This threshold is guaranteed over −40 °C to +150 °C junction temperature.
Does NCV8772CDT334RKG require an external pull-up resistor on the RO pin?
Yes, the NCV8772CDT334RKG requires an external pull-up resistor on the RO pin because it is configured as an open-drain output for the 3.3 V variant. A resistor between 5 kΩ and 100 kΩ connected from RO to VOUT ensures proper logic-high level (≥3.0 V) while respecting the maximum sink current (1.3 mA) and leakage limits (≤1.0 µA).
What is the maximum allowable power dissipation for NCV8772CDT334RKG at 25 °C ambient?
With RJA = 47.1 °C/W (DPAK-5, 1 oz copper), the NCV8772CDT334RKG can dissipate up to 2.65 W at 25 °C ambient before reaching its 150 °C max junction temperature (PDmax = (150 − 25) / 47.1 ≈ 2.65 W). At 350 mA load and 10 V dropout (e.g., 13.3 V input), power dissipation is ~3.66 W - requiring thermal derating or reduced load to stay within safe operating area.
Can NCV8772CDT334RKG operate with a 10 µF ceramic output capacitor?
Yes, the NCV8772CDT334RKG is stable with ceramic output capacitors ranging from 1 µF to 100 µF and ESR values from 0.01 Ω to 100 Ω. A 10 µF X7R ceramic capacitor (typical ESR < 10 mΩ) is fully supported and improves load transient response compared to the minimum 1 µF requirement - no series resistor needed.
Is NCV8772CDT334RKG pin-compatible with other variants in the NCV8772C family?
Yes, all NCV8772C variants - including NCV8772CDT334RKG, NCV8772CDT504RKG, and NCV8772CDS334R4G - share identical pinout (Vin, RO, GND, EN, Vout) and DPAK-5/D2PAK-5 mechanical footprints. Electrical differences (output voltage, reset delay, package thermal resistance) do not affect PCB layout, enabling drop-in replacement for voltage or thermal optimization.
NCV8772CDT334RKG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.875V @ 350mA
- Current - Output:
- 350mA
- Current - Quiescent (Iq):
- 29 µA
- Current - Supply (Max):
- 30 µA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK-5
NCV8772CDT334RKG FAQ
1.How can I place an order for NCV8772CDT334RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8772CDT334RKG 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 NCV8772CDT334RKG reliable?
The price and inventory of NCV8772CDT334RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8772CDT334RKG is usually 5 days.
3.What payment methods are accepted for NCV8772CDT334RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8772CDT334RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8772CDT334RKG?
NCV8772CDT334RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8772CDT334RKG 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 NCV8772CDT334RKG?
For technical support, including NCV8772CDT334RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8772CDT334RKG requirements.
6.How does Aetrix verify that NCV8772CDT334RKG is sourced from the original manufacturer or authorized distributors?
All NCV8772CDT334RKG 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 NCV8772CDT334RKG meets industry standards.
7.What is the process for return or replacement of NCV8772CDT334RKG?
All NCV8772CDT334RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8772CDT334RKG, 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 NCV8772CDT334RKG part is unused and in its original packaging.
Return procedure for NCV8772CDT334RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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