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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

onsemi NCV4299D233R2G

Name: NCV4299D233R2G
Brand: onsemi
SKU: NCV4299D233R2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCV4299D233R2G

Manufacturer:: onsemi

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: NCV4299D233R2G.pdf

Description:: IC REG LINEAR 3.3V 150MA 14SOIC

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Product details

Overview

NCV4299D233R2G from onsemi is an automotive-grade 3.3 V, ±2% LDO linear voltage regulator delivering up to 150 mA output current in a 14-lead SOIC package with internal fuse protection. It features adjustable reset threshold (1.26–1.44 V reference), early-warning sense monitor (SI/SO), and inhibit control enabling <1.0 µA quiescent current in shutdown. It is designed for battery-powered microprocessor systems in harsh automotive environments.

For engineers reviewing the NCV4299D233R2G datasheet, pinout, applications, or equivalent options, key selection criteria include its 0.22 V typical dropout at 100 mA, 90 µA typical quiescent current under 1 mA load, −40°C to +150°C operating junction temperature, 60 V transient tolerance, and integrated inhibit function - all critical for reliable power management in automotive ECUs and body control modules.

Technical Context

The NCV4299D233R2G uses a PNP pass transistor architecture to achieve low dropout (≤0.5 V at 100 mA) while maintaining regulation down to input voltages as low as 4.4 V for the 3.3 V version. Its bandgap-referenced feedback loop ensures ±2% output accuracy across temperature and load.

It integrates three independent monitoring subsystems: (1) a reset circuit with programmable delay (via external capacitor on D pin) and adjustable threshold (via resistor divider on RADJ), (2) a sense comparator (SI/SO) providing early warning at ~1.35 V trip point with 90 mV hysteresis, and (3) an inhibit input (INH) that disables regulation and reduces I_Q to <1.0 µA - all functional over the full −40°C to +150°C junction range.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±2% (3.23–3.37 V); stable regulation across 4.4–45 V input range.
Max Output Current	150 mA continuous; current limit trips at 250–500 mA to protect against overload.
Dropout Voltage	0.22 V typical at 100 mA; enables operation with minimal headroom (e.g., 4.52 V input sustains 3.3 V output).
Quiescent Current	90 µA typical at 1 mA load; <1.0 µA in INH-off state - extends battery life in always-on systems.
Reset Threshold	Adjustable from 2.96 V to 3.16 V (3.3 V version); default 3.04 V ±0.12 V with internal reference.
Transient Tolerance	Withstands 60 V peak load dump transients and −40 V reverse battery - meets ISO 7637-2 Pulse 5a requirements.
Operating Temperature	Junction range −40°C to +150°C; qualified per AEC-Q100 Grade 1 for automotive under-hood use.

Pinout & Package

NCV4299D233R2G is housed in a Pb-free 14-lead SOIC package (Case 751A, D suffix), internally fused for enhanced reliability in automotive applications.

Pin/Terminal	Circuit Role	Design Meaning
1	RADJ	Reset adjust input; connects to resistor divider from Q to set custom reset threshold below default 3.04 V.
2	D	Reset delay capacitor node; charges at 4.0–12 µA to set power-on reset timing (e.g., 28 ms with 100 nF).
3–5, 10–12	GND	Seven dedicated ground terminals; reduce impedance and improve noise immunity in high-current automotive PCB layouts.
6	INH	Inhibit control; logic-high enables regulation, logic-low disables output and cuts I_Q to <1.0 µA.
7	RO	Open-collector reset output; NPN sink pulls low when V_Q drops below threshold - signals microcontroller reset.
8	SO	Open-collector sense output; provides early-warning signal before RO asserts, allowing graceful firmware shutdown.
9	Q	Regulated 3.3 V output; requires 22 µF output capacitor with ≤5.0 Ω ESR for guaranteed stability.
13	I	Main input; accepts 4.4–45 V DC; withstands 60 V transients and −40 V reverse polarity.
14	SI	Sense input; monitors V_Q via external divider; triggers SO when crossing 1.26–1.44 V threshold with 90 mV hysteresis.

Key Features

Feature	Design Value
Automotive qualification	NCV prefix denotes AEC-Q100 Grade 1 compliance and change-controlled manufacturing for safety-critical systems.
Early-warning SI/SO monitor	Provides 3.8–8.0 µs reaction time between V_Q dip and SO assertion - gives MCU time to save state before hard reset.
Adjustable reset delay	Capacitor-programmable delay (17–35 ms typical) prevents false resets during brief input dips or cold cranking.
Fused SO-14 leads	Internally fused bond wires enhance robustness against surge currents and long-term thermal stress in engine bay deployments.
Ultra-low shutdown current	<1.0 µA I_Q in INH-off mode enables zero-power sleep states in telematics and gateway modules.

Applications

Body Control Module (BCM)	Advanced Driver Assistance Systems (ADAS) Camera Power
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic; RO triggers system reset during battery undervoltage events; SI/SO warns of impending brownout. Use Value: 0.22 V dropout allows operation during cold-crank (6.0 V battery), while 60 V transient rating eliminates need for external TVS diodes.	Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules mounted near engine compartments. IC Role / Device Role / Timing Role: Regulated 3.3 V source with INH-controlled shutdown during vehicle sleep; SO provides pre-reset warning to preserve last-frame buffer. Use Value: −40°C to +150°C operation supports under-hood placement; fused SO-14 package improves long-term reliability vs. standard SOIC.
Telematics Control Unit (TCU)	Electric Power Steering (EPS) Sensor Interface
Use Scenario: Powers cellular modem, GNSS receiver, and secure MCU in connected vehicle gateways requiring always-on connectivity. IC Role / Device Role / Timing Role: Always-on 3.3 V rail with INH-driven deep-sleep mode; RO synchronizes firmware watchdog reset with battery voltage collapse. Use Value: 90 µA quiescent current minimizes parasitic drain; adjustable RADJ allows reset tuning for varying battery chemistries (LiFePO₄ vs. lead-acid).	Use Scenario: Supplies torque and position sensors in EPS motor control units exposed to high EMI and thermal cycling. IC Role / Device Role / Timing Role: Fault-tolerant 3.3 V supply with short-circuit, thermal, and reverse-voltage protection; RO initiates safe torque reduction on undervoltage. Use Value: Integrated 60 V/−40 V protection replaces discrete clamp circuits; seven GND pins reduce ground bounce in noisy motor drive environments.

Body Control Module (BCM)

Advanced Driver Assistance Systems (ADAS) Camera Power

Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in vehicle door modules and lighting controllers.

IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic; RO triggers system reset during battery undervoltage events; SI/SO warns of impending brownout.

Use Value: 0.22 V dropout allows operation during cold-crank (6.0 V battery), while 60 V transient rating eliminates need for external TVS diodes.

Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules mounted near engine compartments.

IC Role / Device Role / Timing Role: Regulated 3.3 V source with INH-controlled shutdown during vehicle sleep; SO provides pre-reset warning to preserve last-frame buffer.

Use Value: −40°C to +150°C operation supports under-hood placement; fused SO-14 package improves long-term reliability vs. standard SOIC.

Telematics Control Unit (TCU)

Electric Power Steering (EPS) Sensor Interface

Use Scenario: Powers cellular modem, GNSS receiver, and secure MCU in connected vehicle gateways requiring always-on connectivity.

IC Role / Device Role / Timing Role: Always-on 3.3 V rail with INH-driven deep-sleep mode; RO synchronizes firmware watchdog reset with battery voltage collapse.

Use Value: 90 µA quiescent current minimizes parasitic drain; adjustable RADJ allows reset tuning for varying battery chemistries (LiFePO₄ vs. lead-acid).

Use Scenario: Supplies torque and position sensors in EPS motor control units exposed to high EMI and thermal cycling.

IC Role / Device Role / Timing Role: Fault-tolerant 3.3 V supply with short-circuit, thermal, and reverse-voltage protection; RO initiates safe torque reduction on undervoltage.

Use Value: Integrated 60 V/−40 V protection replaces discrete clamp circuits; seven GND pins reduce ground bounce in noisy motor drive environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NCV8664DS33R2G	3.3 V, 150 mA, SO-8; no INH or SI/SO; 350 mV dropout at 150 mA; 30 µA I_Q.	Lacks inhibit, reset, and sense functions; suited for simpler non-monitoring rails.	Select when only basic regulation is needed and board space is constrained (SO-8 vs SO-14).
TLV73333PDBVR	3.3 V, 300 mA, SOT-23-5; no reset/sense/inhibit; 170 mV dropout at 300 mA; 35 µA I_Q; not AEC-Q100 qualified.	Higher current but no automotive qualification or fault monitoring; smaller footprint.	Choose for cost-sensitive consumer or industrial designs where AEC-Q100 and system-level monitoring are unnecessary.

Compared with NCV4299D233R2G, NCV8664DS33R2G offers lower quiescent current and smaller package but omits critical automotive monitoring features, while TLV73333PDBVR provides higher output current in a tiny footprint but lacks automotive qualification and system supervision - making NCV4299D233R2G the only choice for AEC-Q100-compliant, safety-aware power domains.

Availability

NCV4299D233R2G is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera power supplies, and telematics control units requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for NCV4299D233R2G 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 focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications, with deep expertise in automotive power management and AEC-Q100 qualification.

The NCV4299 series was developed specifically for automotive microprocessor power domains requiring integrated reset supervision, early-warning monitoring, and robust transient protection - targeting body control, infotainment, and ADAS subsystems.

FAQ

What is the maximum input voltage the NCV4299D233R2G can withstand?

The NCV4299D233R2G supports a continuous DC input voltage up to 45 V and can withstand transient peaks of 60 V - meeting ISO 7637-2 Pulse 5a requirements for automotive load dump protection without external clamping components.

Does the NCV4299D233R2G require an external capacitor on the RADJ pin?

No, the NCV4299D233R2G does not require a capacitor on RADJ. RADJ is a DC-adjust input; a resistor divider from Q to RADJ sets the reset threshold. If unused, RADJ must be connected directly to GND to enable the default 3.04 V reset point.

How does the inhibit (INH) function affect the NCV4299D233R2G's output behavior?

When INH is pulled low, the NCV4299D233R2G disables its pass transistor, shutting down the 3.3 V output (Q pin) and reducing total quiescent current to <1.0 µA. The RO and SO outputs remain inactive, and the device enters ultra-low-power standby - ideal for vehicle sleep modes.

What output capacitor specifications guarantee stability for the NCV4299D233R2G?

Stability is guaranteed for the NCV4299D233R2G with a 22 µF output capacitor having an ESR ≤5.0 Ω across the full operating temperature range. Aluminum electrolytic capacitors are recommended; ceramic capacitors with near-zero ESR may cause instability per the datasheet's stability region plots.

Can the NCV4299D233R2G's reset delay time be adjusted, and how?

Yes, the NCV4299D233R2G's reset delay is set by an external capacitor on the D pin. With a typical charge current of 7.1 µA, a 100 nF capacitor yields ~28 ms delay (td = CD × (V_UD − V_D,sat) / I_D). Values from 47 nF to 220 nF provide scalable delays from ~13 ms to ~60 ms.

NCV4299D233R2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 45V

Voltage - Output (Min/Fixed):: 3.3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 100mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 100 µA

Current - Supply (Max):: 2 mA

PSRR:: 66dB (100Hz)

Control Features:: Reset

Protection Features:: Over Temperature, Reverse Polarity, Short Circuit

Operating Temperature:: -40°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

NCV4299D233R2G FAQ

1.How can I place an order for NCV4299D233R2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCV4299D233R2G 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 NCV4299D233R2G reliable?

The price and inventory of NCV4299D233R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4299D233R2G is usually 5 days.

3.What payment methods are accepted for NCV4299D233R2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4299D233R2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCV4299D233R2G?

NCV4299D233R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCV4299D233R2G 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 NCV4299D233R2G?

For technical support, including NCV4299D233R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4299D233R2G requirements.

6.How does Aetrix verify that NCV4299D233R2G is sourced from the original manufacturer or authorized distributors?

All NCV4299D233R2G 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 NCV4299D233R2G meets industry standards.

7.What is the process for return or replacement of NCV4299D233R2G?

All NCV4299D233R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4299D233R2G, 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 NCV4299D233R2G part is unused and in its original packaging.

Return procedure for NCV4299D233R2G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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