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onsemi NCV302LSN30T1G
- Part No.:
- NCV302LSN30T1G
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV302LSN30T1G.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
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Product details
Overview
NCV302LSN30T1G from onsemi is an automotive-grade voltage detector IC with programmable reset delay, designed as a microprocessor reset controller for battery-powered systems. It features a 3.0 V ±3% undervoltage detection threshold (−40°C to +125°C), 0.5 µA typical quiescent current, complementary active-low reset output, and external capacitor-programmable delay timing. Used in engine control units and ADAS power management where extended battery life and AEC-Q100 compliance are critical.
For engineers reviewing the NCV302LSN30T1G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-qualified alternatives, and supply support for high-reliability embedded programs.
Technical Context
The NCV302LSN30T1G integrates a precision voltage comparator with 3.0 V nominal threshold and 0.09–0.21 V hysteresis, plus an internal N-channel MOSFET switch that discharges the external delay capacitor (CD) upon undervoltage detection. Its complementary output stage provides both active-low reset and active-high reset signals simultaneously.
Delay timing is set by an external capacitor connected to Pin 5 (CD), charged through an internal 0.5–2.0 MΩ pull-up resistor (RD); the CD pin threshold is 1.65–2.81 V at Vin = 3.3 V. The device operates from 0.8 V to 10 V input and is specified across −40°C to +125°C for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 3.0 V ±3% over −40°C to +125°C - ensures reliable reset assertion during brown-out in automotive environments |
| Quiescent Current | 0.5 µA typical at 2.87 V - enables multi-year battery operation in always-on vehicle modules |
| Output Type | Complementary active-low / active-high - eliminates need for external inverters in dual-signal reset architectures |
| Delay Programmability | Externally set via capacitor on Pin 5 - supports configurable reset hold times from milliseconds to seconds without firmware |
| Operating Voltage Range | 0.8 V to 10 V - accommodates wide-input DC-DC outputs and direct battery monitoring (e.g., 12 V nominal with ripple) |
| Temperature Range | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and infotainment applications |
| Hysteresis | 0.09–0.21 V - prevents oscillatory reset toggling near threshold during slow-rising supply recovery |
Pinout & Package
NCV302LSN30T1G is housed in a TSOP-5 (SOT-23-5) package with 1.6 mm × 2.9 mm footprint and 0.95 mm height, optimized for space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Reset Output (Active Low) | Drives low during undervoltage; sinks up to 3.5 mA at VOUT = 0.5 V - directly interfaces with MCU nRESET pins |
| 2 | Input (Voltage Sense) | Monitors system supply; detects drop below 3.0 V threshold with hysteresis - no external divider needed for 3.0 V rail |
| 3 | No Connect | Internally unconnected; must be left floating or tied to GND - no routing or thermal impact required |
| 4 | GND | Ground reference for all internal circuitry and output stages - requires low-impedance connection to system ground plane |
| 5 | CD (Capacitor Delay) | Controls reset release timing; internal 1 MΩ pull-up charges external capacitor - sets tD1/tD2 per Figures 30–32 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C) qualification confirmed - meets automotive reliability and stress-test requirements out-of-box |
| Ultra-Low Quiescent Current | 0.5 µA typical - reduces standby power loss to <1.5 µW at 3.0 V, critical for always-on telematics modules |
| Programmable Reset Delay | Capacitor-controlled tD1/tD2 - enables precise hold-time tuning (e.g., 100 ms to 10 s) without changing firmware or BOM |
| Complementary Outputs | Simultaneous active-low and active-high reset signals - supports legacy and modern MCU families without level-shifting |
| High-Accuracy Threshold | ±3% over full temperature range - eliminates need for calibration in production test for 3.0 V supply monitoring |
Applications
| Engine Control Unit (ECU) Power Monitoring | Advanced Driver Assistance Systems (ADAS) Camera Module |
|---|---|
Use Scenario: Monitors 5 V DC-DC output powering ECU microcontroller during cold cranking when battery dips to 6 V. IC Role / Device Role / Timing Role: Voltage detector asserts active-low reset until supply recovers above 3.0 V + hysteresis, then holds reset for programmable delay before release. Use Value: Prevents MCU lockup during transient undervoltage; delay ensures stable clock and memory initialization before software execution. |
Use Scenario: Supervises 3.3 V rail feeding image sensor and ISP in rear-view camera exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Detects rail collapse due to load dump or reverse-battery events; complementary outputs drive both sensor enable and MCU nRESET. Use Value: Enables fail-safe shutdown and clean restart without external logic; AEC-Q100 rating guarantees operation at 125°C ambient. |
| Automotive Infotainment Head Unit | Telematics Control Unit (TCU) |
Use Scenario: Watches main 12 V-derived 3.3 V supply in head unit with multiple SoC domains and display backlight drivers. IC Role / Device Role / Timing Role: Triggers reset on sustained dip below 3.0 V; CD pin delay avoids false triggers from switching noise on shared power rail. Use Value: Eliminates need for RC-based reset circuits; hysteresis and low IQ improve system-level power efficiency and noise immunity. |
Use Scenario: Provides supervised power-on reset for LTE modem and GNSS receiver operating from vehicle battery via buck converter. IC Role / Device Role / Timing Role: Generates synchronized reset pulse after power stabilization; active-high output drives modem reset while active-low feeds baseband processor. Use Value: Ensures deterministic boot sequence across heterogeneous subsystems; Pb-free SOT-23-5 eases RoHS-compliant reflow assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP302LSN30T1G | Same core specs; commercial grade (−40°C to +105°C), non-AEC-Q100 | Lacks automotive qualification; suitable for industrial or consumer modules not requiring PPAP | Select when cost sensitivity outweighs automotive qualification; identical pinout and electrical behavior |
| TLV803EB30DBZR | Fixed 3.0 V threshold, no programmable delay; 0.6 µA IQ; open-drain output only | Requires external RC network for delay; lacks complementary output and automotive temp range | Choose for simple, low-cost reset-only functions where delay tuning and dual outputs are unnecessary |
Compared with NCP302LSN30T1G, the NCP302LSN30T1G alternative offers identical functionality without automotive qualification-ideal for cost-driven industrial designs-while TLV803EB30DBZR trades programmability and output flexibility for lower unit cost and smaller footprint in basic reset applications.
Availability
NCV302LSN30T1G is available at Aetrix Electronics and suitable for automotive ECU, ADAS camera modules, infotainment head units, and telematics control units requiring stable component supply across long production lifecycles.
Supply support for NCV302LSN30T1G 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 supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.
The NCV302 series belongs to onsemi's automotive power management portfolio, engineered specifically for robust voltage supervision in harsh-temperature vehicle subsystems with emphasis on AEC-Q100 compliance and ultra-low power consumption.
FAQ
What is the guaranteed operating temperature range for NCV302LSN30T1G?
The NCV302LSN30T1G is fully specified from −40°C to +125°C and qualified to AEC-Q100 Grade 1 standards. This range covers under-hood and cabin-mounted automotive applications, including engine control, body electronics, and ADAS sensors where ambient temperatures exceed 105°C.
How does the CD pin (Pin 5) control reset timing in NCV302LSN30T1G?
In NCV302LSN30T1G, Pin 5 (CD) connects to an internal ~1 MΩ pull-up resistor and N-channel discharge MOSFET. When undervoltage is detected, the MOSFET pulls CD low; upon recovery, RD charges the external capacitor. Reset release occurs when CD voltage crosses ~0.675×Vin - enabling precise, capacitor-defined delays per Figures 30–32.
Is NCV302LSN30T1G pin-compatible with other devices in the NCP302/NCP303 family?
Yes - NCV302LSN30T1G uses the same TSOP-5 (SOT-23-5) package and identical pinout as all NCP302/NCP303 variants, including NCP302LSN30T1G and NCP303LSN30T1G. This allows drop-in replacement for different output types or qualification grades without PCB changes.
What is the maximum sink current capability of the active-low reset output (Pin 1) in NCV302LSN30T1G?
The active-low reset output (Pin 1) of NCV302LSN30T1G sinks up to 3.5 mA at VOUT = 0.5 V and VIN = 1.5 V, per Table 1. This is sufficient to directly drive standard CMOS nRESET inputs without external pull-down resistors or buffers.
Does NCV302LSN30T1G require an external voltage divider for 12 V battery monitoring?
No - NCV302LSN30T1G accepts input voltages up to 10 V directly on Pin 2. For 12 V battery monitoring, it must be used downstream of a regulated 5 V or 3.3 V supply, or with an external resistor divider scaled to deliver ≤10 V to Pin 2 while maintaining accuracy and noise immunity.
NCV302LSN30T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCV302LSN30T1G FAQ
1.How can I place an order for NCV302LSN30T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV302LSN30T1G 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 NCV302LSN30T1G reliable?
The price and inventory of NCV302LSN30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV302LSN30T1G is usually 5 days.
3.What payment methods are accepted for NCV302LSN30T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV302LSN30T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV302LSN30T1G?
NCV302LSN30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV302LSN30T1G 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 NCV302LSN30T1G?
For technical support, including NCV302LSN30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV302LSN30T1G requirements.
6.How does Aetrix verify that NCV302LSN30T1G is sourced from the original manufacturer or authorized distributors?
All NCV302LSN30T1G 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 NCV302LSN30T1G meets industry standards.
7.What is the process for return or replacement of NCV302LSN30T1G?
All NCV302LSN30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV302LSN30T1G, 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 NCV302LSN30T1G part is unused and in its original packaging.
Return procedure for NCV302LSN30T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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