My Inquiry
My Account
onsemi LM2931ACTVG
- Part No.:
- LM2931ACTVG
- Manufacturer:
- onsemi
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
LM2931ACTVG.pdf
- Description:
- IC REG LIN POS ADJ 100MA TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,616
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2931ACTVG from onsemi is an adjustable-output low-dropout (LDO) voltage regulator with load dump protection, designed for automotive and industrial battery-powered systems. It delivers ≥100 mA output current, maintains regulation with ≤0.6 V dropout at 100 mA, features 60 V transient input tolerance, −50 V reverse polarity protection, and includes an output inhibit pin for microprocessor control.
For engineers reviewing the LM2931ACTVG datasheet, pinout, applications, or equivalent options, key selection criteria include its adjustable output range (3.0–24 V), ±2.5% reference accuracy (LM2931AC variant), thermal shutdown, internal current limiting, and TO-220-5 package compatibility with heatsink mounting.
Technical Context
The LM2931ACTVG implements a PNP pass transistor architecture enabling ultra-low dropout operation and inherent reverse-battery immunity. Its internal bandgap reference (1.20 V typ) feeds an error amplifier controlling the pass element, while the inhibit pin (Pin 2) enables logic-level shutdown with defined turn-on/turn-off thresholds (2.15 V / 2.50 V at 25°C).
Protection circuitry includes foldback current limiting, thermal shutdown activation at +150°C junction temperature, overvoltage shutdown at 26–40 V input, and mirror-image insertion tolerance - all critical for unregulated 12 V automotive battery environments where load dump transients and jump-start faults occur.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | ≥100 mA continuous - supports mid-power microcontrollers and sensors without external boosting. |
| Dropout Voltage | 0.16 V max at 100 mA - enables stable 3.3 V or 5 V regulation from depleted 4.5 V batteries. |
| Input Voltage Range | 6.0 V to 26 V continuous; withstands 60 V transients ≤100 ms - survives ISO 7637-2 Load Dump pulses. |
| Reference Accuracy | ±2.5% over −40°C to +125°C - ensures tight output voltage tolerance across automotive temperature range. |
| Bias Current | 0.4 mA typ at 10 mA load - extends battery life in always-on monitoring circuits. |
| Output Inhibit Threshold | 2.15 V (on), 2.50 V (off) at 25°C - compatible with standard CMOS logic for controlled power sequencing. |
| Ripple Rejection | 60 dB min at 120 Hz - suppresses alternator ripple in vehicle power systems. |
Pinout & Package
LM2931ACTVG uses the TO-220-5 package (Case 314B), with heatsink surface electrically connected to Pin 3 (Ground). The 5-pin configuration supports adjustable output and active inhibit functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Adjust | Feedback node for external resistor divider - sets output voltage per VOUT = VREF(1 + R1/R2). |
| 2 | Output Inhibit | Active-high enable: output disabled when voltage < 1.20 V (−40°C to +125°C); enabled above 2.15 V (25°C). |
| 3 | Ground | Power and signal reference; tied to heatsink tab - requires low-impedance PCB ground plane. |
| 4 | Input | Unregulated input supply - must be decoupled with ≥0.1 μF ceramic capacitor near pin. |
| 5 | Output | Regulated output - requires ≥100 μF output capacitor with ESR ≤0.3 Ω for stability. |
Key Features
| Feature | Design Value |
|---|---|
| 60 V Load Dump Protection | Withstands ISO 7637-2 Pulse 5a transients without latch-up or degradation - eliminates need for external TVS. |
| −50 V Reverse Polarity Tolerance | Operates safely with battery installed backward - prevents damage during service or assembly errors. |
| Output Inhibit Pin | Enables system-level power gating via microcontroller GPIO - reduces quiescent current to <100 μA in shutdown. |
| Thermal Shutdown + Current Limit | Self-protecting under overload or poor heatsinking - recovers automatically after fault clearance. |
| Adjustable Output (3.0–24 V) | Single BOM part covers multiple rail requirements - simplifies inventory and design reuse across platforms. |
Applications
| Automotive Body Control Module (BCM) | Industrial Handheld Data Logger |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and sensor interface in door module exposed to 12 V battery with load dump events. IC Role / Device Role / Timing Role: Primary LDO regulator providing clean 5 V supply with fault resilience and inhibit-controlled sleep mode. Use Value: Eliminates need for discrete protection circuitry; meets AEC-Q100 Grade 1 requirements via NCV-series lineage. | Use Scenario: Battery-operated environmental monitor logging temperature/humidity data for 6+ months on two AA cells. IC Role / Device Role / Timing Role: Adjustable LDO delivering 3.3 V to MCU and sensors, with inhibit pin synchronized to measurement duty cycle. Use Value: 0.4 mA bias current and 0.16 V dropout extend usable battery capacity by >25% vs. legacy regulators. |
| Medical Point-of-Care Diagnostic Device | Commercial Security Camera System |
Use Scenario: Portable blood glucose meter requiring precise analog front-end biasing and ESD-robust power delivery. IC Role / Device Role / Timing Role: Stable 3.0 V reference source for ADC and op-amps, immune to reverse battery connection during field replacement. Use Value: ±2.5% reference accuracy ensures consistent measurement calibration across temperature; HBM 2000 V rating protects against handling ESD. | Use Scenario: Outdoor IP camera powered from PoE midspan with local 12 V backup battery during mains failure. IC Role / Device Role / Timing Role: Secondary LDO generating 5 V for image sensor and ISP, surviving automotive-grade transients on battery line. Use Value: 60 V transient rating prevents reset during battery switchover; thermal shutdown avoids thermal runaway in sealed enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2931CDT-5.0RKG | Fixed 5.0 V output; ±5.0% tolerance; DPAK package; no inhibit pin. | Suitable only for fixed-voltage designs; lacks programmability and shutdown control. | Select when output voltage is invariant and board space favors surface-mount DPAK. |
| NCV2931ACDR2G | Same adjustable architecture and ±2.5% accuracy; SOIC-8 package; AEC-Q100 qualified. | Requires different PCB layout and thermal management; optimized for automated SMT assembly. | Prefer for new automotive designs requiring PPAP documentation and reflow-compatible packaging. |
Compared with LM2931CDT-5.0RKG, LM2931ACTVG offers voltage flexibility and system-level power control; compared with NCV2931ACDR2G, it provides higher power dissipation capability via TO-220 heatsinking but requires through-hole assembly.
Availability
LM2931ACTVG is available at Aetrix Electronics and suitable for automotive body electronics, industrial handheld instruments, and medical diagnostic devices requiring stable component supply with long lifecycle support and traceable sourcing.
Supply support for LM2931ACTVG 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The LM2931 series was engineered specifically for harsh automotive environments - delivering robustness against load dump, reverse battery, and thermal stress while maintaining precision regulation for safety-critical ECUs and sensors.
FAQ
What is the maximum input voltage the LM2931ACTVG can handle continuously?
The LM2931ACTVG supports continuous input voltages up to 40 V DC. It also withstands transient inputs of up to 60 V for durations ≤100 ms, making it suitable for automotive load dump conditions per ISO 7637-2. This rating is confirmed in the Absolute Maximum Ratings table of the official datasheet (Rev. 30, January 2024).
Does the LM2931ACTVG require an external output capacitor, and if so, what are the minimum requirements?
Yes, the LM2931ACTVG requires an external output capacitor for stability. The datasheet specifies a minimum of 100 μF electrolytic or tantalum capacitor with ESR ≤0.3 Ω. For optimal noise performance and stability across temperature, a 22 μF capacitor is recommended as the optimum value. Operation below 10 μF is not advised.
What is the function of Pin 2 (Output Inhibit) on the LM2931ACTVG, and what voltage thresholds activate it?
Pin 2 is the Output Inhibit terminal: applying <1.20 V disables the output (high-impedance state), while >2.15 V (at 25°C) enables regulation. The threshold hysteresis prevents chatter during slow-rising control signals. This feature allows microcontroller-driven power sequencing and deep-sleep modes, reducing system standby current significantly.
How does the LM2931ACTVG achieve reverse polarity protection, and what is its rated tolerance?
The LM2931ACTVG inherently withstands −50 V reverse input voltage for ≤100 ms at 1.0% duty cycle, as verified in the Maximum Ratings table. This is achieved via internal diode structures and PNP pass transistor topology - no external components are needed. It protects downstream circuitry during battery installation errors or jump-start misconnections.
Is the LM2931ACTVG pin-compatible with other regulators in the LM2931 family, such as the fixed-output LM2931T-5.0G?
No, the LM2931ACTVG is not pin-compatible with fixed-output variants like LM2931T-5.0G. The LM2931ACTVG uses a 5-pin TO-220-5 (Case 314B) configuration with dedicated Adjust and Inhibit pins, whereas LM2931T-5.0G uses a 3-pin TO-220 (Case 221AB) with Input/Ground/Output. PCB layout and schematic must be redesigned for substitution.
LM2931ACTVG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-5 Formed Leads
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- 29.5V
- Voltage Dropout (Max):
- 0.6V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 1 mA
- Current - Supply (Max):
- 6 mA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5
LM2931ACTVG FAQ
1.How can I place an order for LM2931ACTVG through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2931ACTVG 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 LM2931ACTVG reliable?
The price and inventory of LM2931ACTVG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2931ACTVG is usually 5 days.
3.What payment methods are accepted for LM2931ACTVG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2931ACTVG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2931ACTVG?
LM2931ACTVG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2931ACTVG 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 LM2931ACTVG?
For technical support, including LM2931ACTVG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2931ACTVG requirements.
6.How does Aetrix verify that LM2931ACTVG is sourced from the original manufacturer or authorized distributors?
All LM2931ACTVG 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 LM2931ACTVG meets industry standards.
7.What is the process for return or replacement of LM2931ACTVG?
All LM2931ACTVG units undergo pre-shipment inspection (PSI). If there is an issue with LM2931ACTVG, 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 LM2931ACTVG part is unused and in its original packaging.
Return procedure for LM2931ACTVG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2931ACTVG Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
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…
