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onsemi NCV301HSN27T1G
- Part No.:
- NCV301HSN27T1G
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV301HSN27T1G.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
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Product details
Overview
NCV301HSN27T1G from onsemi is an automotive-grade ultra-low-current voltage detector IC with open-drain N-channel active-high reset output, 2.7 V ±2.0% detection threshold, 0.135 V hysteresis, and operation from 0.8 V to 10 V supply - used as a precision power-on reset controller in engine control units and ADAS domain controllers.
For engineers reviewing the NCV301HSN27T1G datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 qualification, −40°C to +125°C operation, 0.5 µA typical quiescent current, and compatibility with 3.3 V/5 V microprocessor reset sequencing.
Technical Context
The NCV301HSN27T1G implements a precision bandgap-based comparator with built-in hysteresis to prevent oscillation near threshold crossing. Its input stage operates down to 0.8 V, enabling monitoring of low-voltage rails such as 1.8 V I/O domains or backup battery supplies.
It features an open-drain N-channel output configured for active-high reset signaling - requiring an external pull-up resistor - and delivers up to 2.5 mA sink current at VOUT = 0.5 V when Vin = 5.0 V, supporting direct interfacing with standard CMOS logic inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.70 V ±2.0% at 25°C; ensures reliable reset assertion before 3.3 V MCU brownout (±81 mV tolerance) |
| Hysteresis | 0.135 V typical; prevents chatter during slow-rising/falling supply transitions |
| Quiescent Current | 0.5 µA typical at Vin = 2.6 V; extends battery life in always-on vehicle modules |
| Operating Voltage Range | 0.8 V to 10 V; supports monitoring of 1.2 V–5 V rails without external level shifting |
| Temperature Range | −40°C to +125°C; qualified for under-hood automotive applications per AEC-Q100 Grade 1 |
| Reset Propagation Delay | 49 µs max (high-to-low), 300 µs max (low-to-high); meets fast-reset timing for modern MCUs |
| Output Type | Open-drain N-channel, active-high; enables wired-OR reset bus and flexible voltage-level translation |
Pinout & Package
NCV301HSN27T1G is housed in a TSOP-5 (SOT-23-5) package with 1.5 mm × 2.9 mm footprint and 0.95 mm height - optimized for space-constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Reset Output | N-channel open-drain output | Active-high signal; requires external pull-up to system rail (e.g., 3.3 V or 5 V) |
| 2 - Input | Voltage sense input | Monitors monitored rail; high-impedance input draws <1 µA |
| 3 - Ground | Analog/digital ground reference | Must be connected directly to low-noise system ground plane |
| 4 - NC | No connect | Internally unconnected; leave floating or tie to ground per layout best practice |
| 5 - NC | No connect | Internally unconnected; leave floating or tie to ground per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (−40°C to +125°C), PPAP-capable - suitable for safety-critical automotive ECUs |
| Ultra-low supply current | 0.5 µA typical enables >10-year battery life in always-on telematics modules |
| Precision threshold accuracy | ±2.0% over temperature ensures deterministic reset across full automotive range |
| Integrated hysteresis | 0.135 V typical eliminates need for external hysteresis components or RC networks |
| Wide input voltage range | 0.8 V to 10 V operation supports direct monitoring of LiFePO₄ battery (2.5–3.6 V) or 12 V vehicle bus |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Monitors 5 V power rail supplying MCU and CAN transceivers during cold cranking (6–8 V dip). IC Role / Device Role / Timing Role: Voltage detector asserts active-high reset until rail stabilizes above 2.7 V, preventing corrupted firmware execution. Use Value: Ensures deterministic boot after battery recovery; 0.5 µA quiescent current avoids parasitic drain on starter battery. | Use Scenario: Supervises 3.3 V domain powering radar SoC and image signal processor in parking assist module. IC Role / Device Role / Timing Role: Generates clean reset pulse upon power-up and detects brownout during EMI events. Use Value: 2.7 V threshold aligns with 3.3 V LDO dropout margin; hysteresis prevents false resets during transient noise. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Watches 12 V vehicle bus via resistive divider to detect ignition-off battery drain conditions. IC Role / Device Role / Timing Role: Triggers wake-up interrupt when bus drops below 2.7 V threshold, signaling low-battery state. Use Value: Wide 0.8–10 V input range allows direct sensing without external regulator; AEC-Q100 ensures reliability over 15-year lifecycle. | Use Scenario: Provides primary reset supervision for LTE modem and GNSS receiver operating from 3.3 V LDO. IC Role / Device Role / Timing Role: Active-high open-drain output interfaces with modem's nRESET pin via 10 kΩ pull-up to 3.3 V. Use Value: 2.5 mA sink capability drives modem reset pin directly; 49 µs propagation delay meets 3GPP timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EA27DPWR | 2.7 V threshold, SOT-23-5, 0.5 µA IQ, but only −40°C to +85°C industrial grade | Not AEC-Q100 qualified; unsuitable for under-hood use | Select only for non-automotive cost-sensitive designs where extended temperature is not required |
| MAX6375XR27+T | 2.7 V threshold, SOT-23-5, 1.2 µA IQ, push-pull active-high output | Higher quiescent current reduces battery life; no hysteresis adjustment option | Prefer when board space allows larger package or when push-pull drive is mandatory |
Compared with TLV803EA27DPWR and MAX6375XR27+T, the NCV301HSN27T1G uniquely combines AEC-Q100 Grade 1 qualification, 0.5 µA quiescent current, and open-drain flexibility - making it the only drop-in solution for automotive reset supervision where thermal robustness and ultra-low power are co-required.
Availability
NCV301HSN27T1G is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, body control modules, and telematics systems requiring stable component supply across long production lifecycles.
Supply support for NCV301HSN27T1G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV301HSN27T1G belongs to the NCP300/NCP301 voltage detector family - designed specifically for ultra-low-power, high-accuracy reset supervision in automotive and industrial systems demanding AEC-Q100 compliance and extended temperature operation.
FAQ
What is the detection threshold accuracy of the NCV301HSN27T1G over temperature?
The NCV301HSN27T1G has a detection threshold of 2.70 V ±2.0% at 25°C. Over the full −40°C to +125°C operating range, the threshold is guaranteed to be within ±3% of nominal (i.e., 2.619 V to 2.781 V), as specified in Table 3 of the datasheet for NCV301 series devices. This accuracy ensures reliable reset behavior across all automotive ambient conditions without calibration.
Does the NCV301HSN27T1G require an external pull-up resistor on its reset output?
Yes, the NCV301HSN27T1G features an open-drain N-channel output and requires an external pull-up resistor to the target logic rail (e.g., 3.3 V or 5 V). The datasheet recommends a 10 kΩ pull-up for standard CMOS interfacing. Without this resistor, the reset signal cannot achieve a valid high state, and the NCV301HSN27T1G will not function as intended.
Is the NCV301HSN27T1G pin-compatible with other devices in the NCP300/NCP301 family?
Yes, the NCV301HSN27T1G uses the standard TSOP-5 (SOT-23-5) package with identical pinout to all NCP300/NCP301 variants - Pin 1 (Reset), Pin 2 (Input), Pin 3 (GND), Pin 4 (NC), Pin 5 (NC). This allows direct substitution within the same threshold and output-type group (e.g., NCV301HSN27T1G ↔ NCV301HSN30T1G), provided system-level timing and drive strength remain compatible.
What is the maximum sink current capability of the NCV301HSN27T1G reset output?
The NCV301HSN27T1G can sink up to 2.5 mA when the output is low and VOUT = 0.5 V with Vin = 5.0 V (per Table 4, Note 24). This is sufficient to drive standard CMOS inputs and small LED indicators without additional buffering, and exceeds the 1 mA typical requirement of most microcontroller nRESET pins.
How does the hysteresis of the NCV301HSN27T1G improve system reliability?
The NCV301HSN27T1G provides 0.135 V typical hysteresis between upper (VDET+) and lower (VDET−) thresholds. This prevents oscillatory reset toggling during slow or noisy supply ramps - for example, during battery recovery after cranking - ensuring a single, clean reset assertion and release. The fixed hysteresis is internally trimmed and requires no external components.
NCV301HSN27T1G 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:
- 2.7V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCV301HSN27T1G FAQ
1.How can I place an order for NCV301HSN27T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV301HSN27T1G 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 NCV301HSN27T1G reliable?
The price and inventory of NCV301HSN27T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV301HSN27T1G is usually 5 days.
3.What payment methods are accepted for NCV301HSN27T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV301HSN27T1G transactions.
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4.How is shipping managed for NCV301HSN27T1G?
NCV301HSN27T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV301HSN27T1G 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 NCV301HSN27T1G?
For technical support, including NCV301HSN27T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV301HSN27T1G requirements.
6.How does Aetrix verify that NCV301HSN27T1G is sourced from the original manufacturer or authorized distributors?
All NCV301HSN27T1G 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 NCV301HSN27T1G meets industry standards.
7.What is the process for return or replacement of NCV301HSN27T1G?
All NCV301HSN27T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV301HSN27T1G, 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 NCV301HSN27T1G part is unused and in its original packaging.
Return procedure for NCV301HSN27T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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