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onsemi NCV317LBZG
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- Part No.:
- NCV317LBZG
- Manufacturer:
- onsemi
- Package:
- TO-226-3, TO-92-3 Long Body
- Datasheet:
-
NCV317LBZG.pdf
- Description:
- IC REG LINEAR POS ADJ 100MA TO92
- Quantity:
- Payment:
- Shipping:
Inventory:4,993
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Product details
Overview
NCV317LBZG from ON Semiconductor is a 3-terminal, adjustable positive-voltage linear regulator delivering up to 100 mA output current with 1.2 V to 37 V programmable output range, internal thermal overload protection, and short-circuit current limiting - used in automotive body control modules for stable low-power bias supply generation.
For engineers reviewing the NCV317LBZG datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (TO-92), confirmed electrical specs (VREF = 1.25 V, IADJ = 50–100 μA, RLINE ≤ 0.07 %/V), and automotive-grade qualification details critical for AEC-Q100-compliant designs.
Technical Context
The NCV317LBZG implements a bandgap reference-based feedback loop with adjustable output via two external resistors, enabling precise voltage setting without trimming. Its floating operation supports high-side regulation and input-to-output differential up to 40 V.
It integrates safe-area compensation for the output transistor, thermal shutdown triggered at TJ ≥ +150 °C (typical), and current limiting that holds IO ≤ 200 mA under short-circuit conditions while maintaining stability across 0 °C to +125 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 100 mA continuous (200 mA peak); sufficient for powering microcontrollers, sensors, and interface ICs in automotive sub-systems. |
| Reference Voltage | 1.25 V ±50 mV; sets minimum output voltage and defines resistor-divider ratio accuracy for target VOUT. |
| Line Regulation | ≤ 0.07 %/V (VI−VO = 3–40 V); ensures stable output despite battery voltage fluctuations in vehicle systems. |
| Load Regulation | ≤ 70 mV (10–100 mA, VOUT ≤ 5 V); maintains tight voltage tolerance under dynamic load changes typical in ECU peripherals. |
| Adjust Pin Current | 50–100 μA; enables use of high-value resistor dividers to minimize quiescent current in always-on circuits. |
| Thermal Shutdown Threshold | ≥ +150 °C junction temperature; protects device during sustained overload or poor heatsinking in enclosed modules. |
| Ripple Rejection | 66–80 dB (120 Hz, with 10 μF CADJ); suppresses alternator ripple and switching noise in automotive power rails. |
Pinout & Package
NCV317LBZG is housed in a TO-92 plastic package with straight leads, rated for operation from −40 °C to +125 °C ambient and qualified per AEC-Q100 Grade 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Adj | Feedback reference node | Connects to resistor divider midpoint; senses 1.25 V reference to regulate output; low IADJ minimizes divider error. |
| 2 - Output | Regulated voltage source | Delivers stabilized output; requires local 0.1 μF ceramic capacitor for high-frequency stability per datasheet recommendation. |
| 3 - Input | Unregulated DC input | Accepts 2.5 V to 40 V input; must maintain ≥3 V headroom above VOUT for regulation; bypassed with ≥10 μF electrolytic. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C ambient); validated for under-hood and body electronics deployment. |
| Internal short-circuit protection | Limits output current to ≤200 mA during fault; prevents catastrophic failure and enables auto-recovery after fault removal. |
| Thermal overload protection | Shuts down output when junction exceeds ~150 °C; resumes operation after cooldown - no latch-up or manual reset required. |
| Output transistor safe-area compensation | Prevents secondary breakdown during transient overloads; allows reliable operation even with marginal heatsinking in space-constrained modules. |
| Floating operation capability | Enables high-side configuration (e.g., reverse-battery protection circuits) without requiring ground-referenced input. |
Applications
| Body Control Module Power | Instrument Cluster Bias Supply |
|---|---|
|
Use Scenario: Provides regulated 5 V or 3.3 V rail for microcontroller, CAN transceiver, and LED driver ICs inside door modules and seat controllers. IC Role / Device Role / Timing Role: Primary linear regulator supplying stable bias voltage; not involved in timing or signal conditioning. Use Value: Delivers 100 mA with <70 mV load regulation and 66+ dB ripple rejection - meets ISO 7637-2 pulse immunity requirements for automotive ECUs. |
Use Scenario: Generates clean 5 V supply for analog gauges, backlight drivers, and display controllers in dashboard assemblies. IC Role / Device Role / Timing Role: Adjustable voltage regulator ensuring consistent brightness and analog accuracy across wide battery voltage range (9–16 V). Use Value: 1.25 V reference tolerance and ≤0.07 %/V line regulation enable <±2% output accuracy over full input range - critical for analog meter scaling. |
| Engine Management Sensor Interface | Telematics Module Standby Regulator |
|
Use Scenario: Powers oxygen sensor heaters, MAP sensor signal conditioners, and diagnostic circuitry in engine control units. IC Role / Device Role / Timing Role: Low-noise, thermally robust regulator supporting precision analog front-ends exposed to under-hood temperatures. Use Value: RMS noise ≤0.003 % of VOUT and thermal shutdown at ≥150 °C ensure signal integrity and reliability in high-temperature environments. |
Use Scenario: Supplies always-on 3.3 V rail to GPS receiver, cellular modem, and real-time clock in connected vehicle telematics units. IC Role / Device Role / Timing Role: Low-quiescent, adjustable regulator enabling extended battery life during vehicle sleep mode. Use Value: IADJ ≤100 μA permits use of MΩ-level feedback resistors - reduces standby current to <10 μA total, meeting UNECE R100 sleep-current limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable positive linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM317LZ | Commercial-grade (0 °C to +125 °C), non-AEC-Q100; identical pinout, same electrical specs except TJ max = +125 °C (not junction-limited shutdown). | Not qualified for automotive use; suitable only for industrial or consumer applications where temperature and reliability requirements are less stringent. | Select LM317LZ only for non-automotive designs; NCV317LBZG is mandatory for AEC-Q100-compliant systems. |
| TLV1117-33CDCYR | Fixed 3.3 V output, SOT-223 package, lower dropout (1.2 V), higher PSRR (70 dB @ 1 kHz), but no adjustability and 800 mA output. | Used where fixed voltage and higher current are needed; lacks programmability and TO-92 form factor for legacy board compatibility. | Choose TLV1117-33CDCYR for new designs needing 3.3 V at >100 mA; retain NCV317LBZG when adjustable output or TO-92 footprint is required. |
Compared with LM317LZ and TLV1117-33CDCYR, the NCV317LBZG uniquely combines AEC-Q100 Grade 1 qualification, TO-92 through-hole compatibility, and full 1.2–37 V adjustability - making it the only option for retrofitting or upgrading legacy automotive linear regulator positions requiring qualification and flexibility.
Availability
NCV317LBZG is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster power supplies, and engine management sensor interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV317LBZG 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The NCV317LBZG belongs to ON Semiconductor's automotive-grade linear regulator product line, designed specifically to meet AEC-Q100 requirements for under-hood and body electronics with enhanced thermal and electrical robustness.
FAQ
What is the maximum input-output voltage differential supported by the NCV317LBZG?
The NCV317LBZG supports a maximum input-output voltage differential of 40 V, as specified in its Absolute Maximum Ratings. This allows operation with input voltages up to 40 V above the set output voltage - essential for handling load-dump transients in automotive 12 V systems. The NCV317LBZG maintains regulation and protection functionality within this limit, provided power dissipation remains within safe operating area.
Does the NCV317LBZG require an output capacitor for stability?
Yes, the NCV317LBZG requires a minimum 0.1 μF ceramic capacitor at the output pin to ensure high-frequency stability and prevent oscillation. This is explicitly recommended in the ON Semiconductor datasheet. Larger values (e.g., 1–10 μF) improve transient response and ripple suppression but do not replace the mandatory ceramic capacitor. The NCV317LBZG will not operate reliably without proper output capacitance.
Is the NCV317LBZG pin-compatible with standard LM317L variants?
Yes, the NCV317LBZG uses the same TO-92 package and identical pinout (Pin 1 = Adj, Pin 2 = Output, Pin 3 = Input) as LM317LZ and other LM317L family members. This enables direct mechanical and electrical replacement in existing designs - provided the application requires automotive qualification, which the NCV317LBZG provides and standard LM317L parts do not.
What is the minimum load current required for regulation in the NCV317LBZG?
The NCV317LBZG requires a minimum load current of 3.5 mA to 10 mA (depending on input-output differential) to maintain regulation, as specified in its Electrical Characteristics table under IL(MIN). This ensures the internal reference and pass transistor remain biased correctly. Below this threshold, output voltage may drift or regulation may be lost - a key design consideration for ultra-low-power standby circuits using the NCV317LBZG.
How does the NCV317LBZG handle thermal overload conditions?
The NCV317LBZG features internal thermal overload protection that disables the output when junction temperature exceeds approximately +150 °C. It automatically recovers once the die cools below the hysteresis threshold (~135 °C), with no latch-up or external reset required. This behavior is fully characterized and guaranteed across the −40 °C to +125 °C ambient range, making the NCV317LBZG suitable for unventilated automotive enclosures where thermal margin is limited.
NCV317LBZG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 37V
- Voltage Dropout (Max):
- -
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 80dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92 (TO-226)
NCV317LBZG FAQ
1.How can I place an order for NCV317LBZG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV317LBZG 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 NCV317LBZG reliable?
The price and inventory of NCV317LBZG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV317LBZG is usually 5 days.
3.What payment methods are accepted for NCV317LBZG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV317LBZG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV317LBZG?
NCV317LBZG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV317LBZG 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 NCV317LBZG?
For technical support, including NCV317LBZG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV317LBZG requirements.
6.How does Aetrix verify that NCV317LBZG is sourced from the original manufacturer or authorized distributors?
All NCV317LBZG 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 NCV317LBZG meets industry standards.
7.What is the process for return or replacement of NCV317LBZG?
All NCV317LBZG units undergo pre-shipment inspection (PSI). If there is an issue with NCV317LBZG, 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 NCV317LBZG part is unused and in its original packaging.
Return procedure for NCV317LBZG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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