My Inquiry
My Account
onsemi NCV8842MNR2G
- Part No.:
- NCV8842MNR2G
- Manufacturer:
- onsemi
- Package:
- 18-VFDFN Exposed Pad
- Datasheet:
-
NCV8842MNR2G.pdf
- Description:
- IC REG BUCK ADJ 1.5A 18DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,649
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV8842MNR2G from onsemi is a high-efficiency, current-mode PWM step-down DC-DC converter IC designed for automotive applications. It delivers up to 2 A output current, operates from 4.5 V to 40 V input, integrates a 120 mΩ high-side MOSFET, supports adjustable output from 0.8 V to VIN × 0.9, and features thermal shutdown and overcurrent protection. It is used in automotive infotainment power rails.
For engineers reviewing the NCV8842MNR2G datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (4.5–40 V), integrated high-side FET RDS(on) (120 mΩ), current-mode control stability, AEC-Q100 Grade 1 qualification, and adjustable output voltage with external feedback divider.
Technical Context
The NCV8842MNR2G implements fixed-frequency (2.1 MHz) current-mode PWM control with internal slope compensation to suppress subharmonic oscillation. It uses an integrated high-side N-channel MOSFET and requires only external bootstrap capacitor, inductor, and output capacitor to form a complete buck regulator.
It includes precision enable threshold (2.1 V typical), internal soft-start (1.5 ms), and built-in fault protection: cycle-by-cycle current limiting, hiccup-mode overcurrent response, and thermal shutdown with automatic recovery. The device is specified for −40 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - supports cold-crank (4.5 V) and load-dump (40 V) conditions in automotive systems. |
| Output Current | Up to 2 A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in ADAS modules. |
| Switching Frequency | 2.1 MHz ±15% - enables use of small external inductors and ceramic capacitors, reducing board area. |
| High-Side RDS(on) | 120 mΩ (typical at TJ = 25 °C) - minimizes conduction loss and improves full-load efficiency (>90% at 12 VIN/3.3 VOUT/1 A). |
| Feedback Reference Voltage | 0.8 V ±1.5% - allows precise output regulation with standard resistor-divider networks. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C ambient) - qualified for under-hood and cabin electronics per automotive reliability standard. |
Pinout & Package
NCV8842MNR2G is housed in a thermally enhanced 8-pin SOIC-EP package (SOIC-8 with exposed pad), optimized for automotive PCB layouts requiring high power dissipation and EMI robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 4.5–40 V; must be decoupled with ≥10 µF ceramic capacitor near pin. |
| SW | Switch node | Connects to external inductor; carries high di/dt switching waveform; requires tight layout to minimize EMI. |
| GND | Power ground | Primary return path for high-current switch loop; tied to exposed pad for thermal conduction. |
| FB | Feedback input | Monitors output via resistive divider; sets regulated output as VOUT = 0.8 V × (1 + R1/R2). |
| EN | Enable control | Active-high logic input; 2.1 V threshold enables operation; <0.4 V disables regulator with low quiescent current. |
| BOOT | Bootstrap supply | Drives high-side gate; requires 0.1 µF ceramic capacitor between BOOT and SW for proper high-side FET turn-on. |
| PGND | Power ground (separate) | Dedicated ground return for high-current paths; routed separately from signal GND to reduce noise coupling. |
| EP | Exposed thermal pad | Internally connected to GND; must be soldered to large copper pour for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 120 mΩ high-side MOSFET | Eliminates need for external high-side switch and driver, reducing BOM count and layout complexity. |
| 2.1 MHz fixed switching frequency | Enables compact filter design using ≤2.2 µH inductors and 10–22 µF ceramic output capacitors. |
| Current-mode PWM control with slope compensation | Ensures stable operation across wide duty-cycle range without external compensation components. |
| Hiccup-mode overcurrent protection | Prevents thermal runaway during short-circuit events by latching off and auto-retrying after cooldown. |
| AEC-Q100 Grade 1 qualification | Validated for automotive environments including vibration, temperature cycling, and long-term reliability testing. |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
Use Scenario: Providing clean, regulated 3.3 V or 5 V power to MCU, display controller, and audio codec in head-unit systems. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable output under dynamic load transients and wide input voltage swings. Use Value: Integrated high-side FET and 2.1 MHz operation reduce solution size by >30% vs. controller+external-FET alternatives. | Use Scenario: Powering image sensor, ISP, and serial interface in forward-facing or surround-view camera modules. IC Role / Device Role / Timing Role: Point-of-load regulator with fast transient response (<10 µs settling time) to handle burst-mode sensor activity. Use Value: AEC-Q100 Grade 1 rating and −40 °C to +125 °C ambient operation ensure reliability in sealed camera housings. |
| Body Control Module (BCM) Sub-Rail | Automotive Telematics Unit (TCU) Core Supply |
Use Scenario: Generating 1.2 V or 1.8 V core voltage for low-power microcontrollers managing door locks, lighting, and HVAC. IC Role / Device Role / Timing Role: Secondary buck stage following main 12 V rail; provides tightly regulated low-voltage domain with low quiescent current. Use Value: Enable pin with 2.1 V threshold allows direct control from 3.3 V GPIO, simplifying system-level power sequencing. | Use Scenario: Supplying 1.1 V core and 1.8 V I/O rails for cellular modem and GNSS processor in vehicle connectivity units. IC Role / Device Role / Timing Role: High-efficiency synchronous buck regulator supporting burst-mode LTE/NR transmission current peaks. Use Value: Thermal shutdown with auto-recovery maintains uptime during sustained high-power data sessions without manual reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QWRNXTQ1 | Higher 3.5 A output, 2.2 MHz switching, requires external high-side FET; no integrated FET. | Better suited for higher-current loads (e.g., multi-core processors); larger solution size due to external FET and driver. | Select when >2 A output or programmable frequency is required; not drop-in compatible. |
| TPS54240QDGQRQ1 | Lower 2.5 A rating, 100 kHz–2.5 MHz adjustable frequency, external FET, wider input (3.5–42 V). | Offers greater flexibility in frequency tuning and external component optimization but increases design effort. | Choose for designs needing frequency synchronization or custom loop compensation; requires additional layout validation. |
Compared with LM61480QWRNXTQ1 and TPS54240QDGQRQ1, the NCV8842MNR2G offers lowest BOM count and smallest footprint for ≤2 A automotive loads, with no external gate driver or high-side FET needed - ideal for space-constrained infotainment and ADAS subsystems.
Availability
NCV8842MNR2G is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply, AEC-Q100 compliance, and high-reliability power conversion.
Supply support for NCV8842MNR2G 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 is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8842MNR2G belongs to onsemi's Automotive Power Management IC portfolio, engineered specifically for harsh-environment DC-DC conversion in passenger vehicles and commercial transport systems.
FAQ
What is the maximum recommended output current for NCV8842MNR2G?
The NCV8842MNR2G is rated for up to 2 A continuous output current under typical thermal conditions (TA = 25 °C, 4-layer PCB with 2 oz copper and thermal vias). Derating is required above 85 °C ambient; full 2 A operation is maintained up to 105 °C ambient with proper heatsinking via the exposed pad. The NCV8842MNR2G datasheet specifies current limit threshold at 2.5 A typical, enabling robust overload handling before hiccup mode activation.
Does NCV8842MNR2G require an external bootstrap capacitor?
Yes, the NCV8842MNR2G requires a 0.1 µF X7R ceramic capacitor between BOOT and SW pins to charge the high-side gate driver. This capacitor must be placed as close as possible to the IC pins to maintain gate drive integrity. The NCV8842MNR2G does not integrate bootstrap circuitry - the external capacitor is mandatory for proper high-side FET operation and cannot be omitted.
Is NCV8842MNR2G qualified for automotive use?
Yes, the NCV8842MNR2G is fully AEC-Q100 qualified to Grade 1 (−40 °C to +125 °C ambient), with test reports covering HTOL, TC, UHAST, and ESD per automotive standards. It is manufactured in IATF 16949-certified facilities and marked with automotive-specific traceability codes. The NCV8842MNR2G meets stringent automotive requirements for reliability, longevity, and environmental resilience.
Can NCV8842MNR2G operate with input voltage below 4.5 V?
No, the NCV8842MNR2G has a minimum operating input voltage of 4.5 V, enforced by internal undervoltage lockout (UVLO) with hysteresis. Below this threshold, the device remains disabled and draws <10 µA quiescent current. It cannot regulate or switch at 3.3 V or 5 V inputs - the NCV8842MNR2G is intended for 12 V battery-derived rails, not low-voltage intermediate buses.
What is the purpose of the PGND pin on NCV8842MNR2G?
PGND (Power Ground) is a dedicated ground terminal for high-current return paths - specifically the switch node current loop - to minimize noise coupling into sensitive analog circuits like FB and EN. It must be connected directly to the exposed pad and routed separately from signal ground until joined at a single star point. The NCV8842MNR2G relies on this separation to maintain regulation accuracy and EMI performance; sharing PGND with signal GND degrades transient response and increases output ripple.
NCV8842MNR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 18-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.27V
- Voltage - Output (Max):
- 38V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 170kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-DFN (5x6)
NCV8842MNR2G FAQ
1.How can I place an order for NCV8842MNR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8842MNR2G 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 NCV8842MNR2G reliable?
The price and inventory of NCV8842MNR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8842MNR2G is usually 5 days.
3.What payment methods are accepted for NCV8842MNR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8842MNR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8842MNR2G?
NCV8842MNR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8842MNR2G 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 NCV8842MNR2G?
For technical support, including NCV8842MNR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8842MNR2G requirements.
6.How does Aetrix verify that NCV8842MNR2G is sourced from the original manufacturer or authorized distributors?
All NCV8842MNR2G 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 NCV8842MNR2G meets industry standards.
7.What is the process for return or replacement of NCV8842MNR2G?
All NCV8842MNR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8842MNR2G, 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 NCV8842MNR2G part is unused and in its original packaging.
Return procedure for NCV8842MNR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV8842MNR2G Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
