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onsemi NCV891330PD40R2G
- Part No.:
- NCV891330PD40R2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
NCV891330PD40R2G.pdf
- Description:
- IC REG BUCK 4V 3A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,393
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Product details
Overview
NCV891330PD40R2G from onsemi is an automotive-grade dual-mode step-down regulator that operates as either a 2 MHz PWM buck converter (up to 3.0 A) or a low-noise LDO linear regulator in light-load conditions, with 30 µA quiescent current and fixed 5.0 V output. It withstands load dumps up to 45 V and integrates internal N-channel power switch, bootstrap driver, and open-drain reset (RSTB) for microcontroller interfacing - deployed in infotainment head units requiring stable 5 V rail under wide battery voltage transients.
For engineers reviewing the NCV891330PD40R2G datasheet, pinout, applications, or equivalent options, key selection considerations include VIN range (3.7–36 V), dual-mode transition threshold (3–40 mA), ±2% output accuracy, thermal shutdown at 155°C, and SOIC-8 EP package compatibility with automotive PCB layout constraints.
Technical Context
The NCV891330PD40R2G implements hybrid regulation: it starts in PWM mode at power-up with soft-start (0.8–2.0 ms), then transitions to LDO mode when output current falls below 3–40 mA - with <2 µs mode-switching latency and mandatory 500 µs blanking before re-evaluation. Its 2 MHz switching frequency (foldback to 500 kHz above 18 V VIN) enables compact 2.2 µH inductor + all-ceramic output filter designs.
Internal protection includes VIN UVLO (4.1–4.5 V start, 3.1–3.7 V stop), overvoltage shutdown (36.5–39.0 V), thermal shutdown (155–190°C), short-circuit foldback (450–650 kHz), and hiccup mode - all coordinated via integrated PWM logic, oscillator, and voltage monitors without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - eliminates external feedback resistors and ensures stable MCU/SoC core rail under automotive temperature range (−40°C to +150°C). |
| Max Output Current | 3.0 A in PWM mode - supports high-current audio amplifiers or display drivers without external pass devices. |
| Quiescent Current | 30 µA in light-load LDO mode - meets ISO 16750-2 sleep-mode requirements for always-on vehicle networks. |
| Input Voltage Range | 3.7 V to 36 V continuous, with 45 V load-dump tolerance - compatible with 12 V and 24 V battery systems including cold-crank and alternator surge events. |
| Switching Frequency | 2.0 MHz nominal (1.8–2.2 MHz) - allows use of small 2.2 µH inductors and reduces EMI fundamental frequency above AM band. |
| Reset Threshold | RSTB asserts low at VOUT ≤ 4.50–4.75 V (7.5% drop) with 14–18 ms delay - provides clean, noise-filtered reset signal to automotive microcontrollers. |
| Thermal Shutdown | Activates at 155–190°C junction temperature with 5–20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
Pinout & Package
NCV891330PD40R2G uses SOIC-8 EP (Case 751AC) with exposed thermal pad electrically tied to Pin 4 (GND). The 8-pin layout supports compact automotive PCB routing with dedicated BST, DRV, and SW nodes for efficient gate drive and low-noise switching.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Battery input supply | Accepts 3.7–36 V DC; must be decoupled with ceramic capacitor near pin to suppress transients up to 45 V load dump. |
| 2 DRV | Gate driver supply output | Provides regulated 3.1–3.5 V to charge external bootstrap capacitor (CBST); UVLO-protected to prevent shoot-through. |
| 3 RSTB | Open-drain reset output | Pulls low when VOUT drops ≤4.75 V; requires external pull-up to VOUT for logic-high assertion to MCU reset input. |
| 4 GND | Power and signal ground reference | Common return for VIN, VOUT, and thermal pad; must be low-impedance plane for EMI control and thermal dissipation. |
| 5 EN | Enable input | TTL-compatible; ties directly to battery (no level shift) - grounding disables regulator and reduces Iq to 9 µA. |
| 6 VOUT | Regulated output & LDO feedback | Delivers fixed 5.0 V; also serves as feedback node in PWM mode and LDO output in linear mode. |
| 7 BST | Bootstrap supply input | Connects to external CBST capacitor; supplies >VIN voltage to N-channel switch gate for low RDS(on) operation. |
| 8 SW | Switching node | Connects to inductor and freewheeling diode cathode; carries high dv/dt pulses - requires tight layout to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode regulation | Automatically switches between 2 MHz PWM buck (≥40 mA load) and low-noise LDO (≤3 mA load), eliminating external mode-control circuitry. |
| Integrated bootstrap driver | On-chip DRV regulator (3.1–3.5 V) charges CBST externally - removes need for discrete charge-pump IC and simplifies BOM. |
| Automotive-grade protection | Single-chip integration of UVLO, overvoltage shutdown, thermal shutdown, current limit (3.9–4.9 A), and short-circuit foldback/hiccup - meets AEC-Q100 stress test requirements. |
| Fixed 5.0 V output | No external resistor divider required - reduces component count, improves long-term accuracy, and avoids drift-induced reset glitches in safety-critical systems. |
| Exposed thermal pad | EPAD connected to Pin 4 (GND) enables 30°C/W junction-to-ambient thermal resistance on 4-layer FR4 - supports 3 A continuous output without heatsink. |
Applications
| Infotainment Head Unit Power | Instrument Cluster Display Supply |
|---|---|
Use Scenario: Powers SoC, touchscreen controller, and audio codec in 12 V vehicle infotainment system with stop-start capability. IC Role / Device Role / Timing Role: Primary 5 V domain regulator delivering 2.5 A peak; manages mode transitions during ignition cycling and deep-sleep wake events. Use Value: 30 µA quiescent current prevents battery drain during 30-day parking; 45 V load-dump tolerance avoids field failures during alternator regulation faults. |
Use Scenario: Supplies TFT-LCD backlight driver and microcontroller in digital instrument cluster exposed to cabin temperature extremes. IC Role / Device Role / Timing Role: Stable 5 V rail generator with ±2% accuracy across −40°C to +125°C ambient - critical for analog sensor interface and display gamma correction. Use Value: Integrated RSTB provides deterministic reset timing (16 ms delay) to MCU upon brownout - eliminates need for external supervisor IC and saves board space. |
| ADAS Camera Module Bias Rail | Telematics Control Unit Core Supply |
Use Scenario: Provides clean 5 V bias to image sensor and ISP in rear-view camera module mounted near exhaust or engine bay. IC Role / Device Role / Timing Role: Dual-mode regulator operating in LDO mode during vehicle off-state (low Iq), switching to PWM only during active video capture. Use Value: 2 MHz switching minimizes conducted EMI into analog video path; thermal shutdown (155°C) protects against enclosure overheating in sealed housings. |
Use Scenario: Generates 5 V core supply for LTE modem, GNSS receiver, and CAN transceiver in telematics gateway with cellular connectivity. IC Role / Device Role / Timing Role: Primary power stage handling 1.8 A continuous load with transient response optimized for burst data transmission. Use Value: 3.0 A current capability supports simultaneous LTE transmit + GNSS acquisition peaks; EN pin direct-battery tie simplifies ignition-sensing architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-mode automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV891330PD50R2G | Identical SOIC-8 EP package, same electrical specs, but marked for 5.0 V output - NCV891330PD40R2G is the correct marking for 5.0 V version per onsemi ordering table. | Same functional replacement; no design change required - NCV891330PD40R2G and NCV891330PD50R2G refer to identical 5.0 V device with alternate date-code marking conventions. | Select NCV891330PD40R2G for new designs; verify top-mark "8913305G" matches datasheet marking diagram for 5.0 V variant. |
| TPS62130AQDGNTQ1 | 3 A, 2.5 V–6 V input, fixed 5.0 V, 2.5 MHz; no LDO mode, higher Iq (17 µA typical in PWM, no ultra-low-Iq state); no RSTB or load-dump tolerance beyond 40 V. | Suitable for non-safety-critical 12 V systems without stop-start or load-dump stress; lacks automotive reset and overvoltage protection. | Use only where load-dump immunity and deterministic reset are not required; requires external reset IC and additional protection circuitry for full automotive compliance. |
Compared with NCV891330PD40R2G, NCV891330PD50R2G is functionally identical and interchangeable, while TPS62130AQDGNTQ1 offers higher switching frequency but omits dual-mode operation, load-dump resilience, and integrated reset - making it unsuitable for ASIL-B or ISO 26262-compliant domains.
Availability
NCV891330PD40R2G is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster, and ADAS camera module designs requiring stable component supply with AEC-Q100 qualification, PPAP support, and long-term lifecycle assurance.
Supply support for NCV891330PD40R2G 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV891330 product line delivers dual-mode DC-DC regulators engineered specifically for automotive battery-connected systems - balancing ultra-low quiescent current in sleep mode with high-efficiency PWM operation during active states.
FAQ
What is the output voltage option for NCV891330PD40R2G?
The NCV891330PD40R2G is the 5.0 V fixed-output variant of the NCV891330 family, confirmed by onsemi's ordering information table and marking diagram ('5' in '8913305G' top mark). It delivers 5.0 V ±2% over −40°C to +150°C junction temperature with no external feedback components required.
Does NCV891330PD40R2G support load-dump conditions?
Yes, NCV891330PD40R2G withstands input transients up to 45 V per Absolute Maximum Ratings, and includes integrated overvoltage shutdown that activates at 36.5–39.0 V. This makes it suitable for direct battery connection in 12 V automotive systems subject to ISO 7637-2 Pulse 5a load-dump events.
How does the dual-mode operation work in NCV891330PD40R2G?
NCV891330PD40R2G starts in PWM mode at power-up, then transitions to LDO mode when output current falls below 3–40 mA (depending on VIN). It remains in LDO mode until current exceeds 50–80 mA or VIN rises above 19–28 V, with <2 µs transition time and built-in 500 µs blanking period before re-evaluation.
What is the purpose of the RSTB pin on NCV891330PD40R2G?
The RSTB pin on NCV891330PD40R2G is an open-drain reset output that pulls low when VOUT drops below 4.50–4.75 V (7.5% of nominal), with 10–25 µs noise filtering and 14–18 ms restart delay. It interfaces directly with automotive microcontrollers and asserts during VIN UVLO, thermal shutdown, or DRV undervoltage.
What package type does NCV891330PD40R2G use?
NCV891330PD40R2G uses SOIC-8 with exposed pad (Case 751AC), featuring thermal pad electrically connected to Pin 4 (GND). This package achieves 30°C/W junction-to-ambient thermal resistance on standard 4-layer FR4 PCBs and supports reflow soldering at 260°C peak temperature.
NCV891330PD40R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.7V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 4V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
NCV891330PD40R2G FAQ
1.How can I place an order for NCV891330PD40R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV891330PD40R2G 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 NCV891330PD40R2G reliable?
The price and inventory of NCV891330PD40R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV891330PD40R2G is usually 5 days.
3.What payment methods are accepted for NCV891330PD40R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV891330PD40R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV891330PD40R2G?
NCV891330PD40R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV891330PD40R2G 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 NCV891330PD40R2G?
For technical support, including NCV891330PD40R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV891330PD40R2G requirements.
6.How does Aetrix verify that NCV891330PD40R2G is sourced from the original manufacturer or authorized distributors?
All NCV891330PD40R2G 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 NCV891330PD40R2G meets industry standards.
7.What is the process for return or replacement of NCV891330PD40R2G?
All NCV891330PD40R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV891330PD40R2G, 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 NCV891330PD40R2G part is unused and in its original packaging.
Return procedure for NCV891330PD40R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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