My Inquiry
My Account
Texas Instruments LM2936MPX-3.0/NOPB
- Part No.:
- LM2936MPX-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
LM2936MPX-3.0/NOPB.pdf
- Description:
- IC REG LINEAR 3V 50MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2936MPX-3.0/NOPB from Texas Instruments is a fixed 3.0-V ultra-low quiescent current LDO voltage regulator in SOT-223 package, featuring 15 μA quiescent current at 100 μA load, 200 mV dropout at 50 mA, and ±2% initial output tolerance. It operates from 5.5 V to 40 V input and delivers up to 50 mA, designed for automotive battery-supplied systems requiring long standby life.
For engineers reviewing the LM2936MPX-3.0/NOPB datasheet, LM2936MPX-3.0/NOPB pinout, LM2936MPX-3.0/NOPB application, or LM2936MPX-3.0/NOPB equivalent, key selection criteria include its −40°C to 125°C operating range, reverse polarity protection down to −24 V, −50 V transient survival, and mandatory 22 µF/300 mΩ–8 Ω output capacitor for stability.
Technical Context
The LM2936MPX-3.0/NOPB uses a PNP pass transistor architecture enabling low dropout and inherent reverse-battery protection. Its internal bandgap reference and error amplifier maintain regulation across line (5.5–40 V), load (100 μA–50 mA), and temperature (−40°C to 125°C) with ±3% total output tolerance.
Thermal shutdown activates at ~160°C junction temperature and recovers autonomously after ~10°C cooldown; short-circuit current limit caps output at 65–250 mA depending on conditions. No undervoltage lockout or shutdown pin is present in this SOT-223 variant-unlike the BM SOIC version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% initial tolerance; ±3% over full line/load/temperature range ensures stable MCU core or sensor rail under automotive transients. |
| Quiescent Current | ≤15 μA at 100 μA load-enables >10-year battery life in always-on telematics modules with microamp-level sleep current budgets. |
| Dropout Voltage | 200 mV typical at 50 mA-supports regulation down to VIN = 3.2 V, critical for cold-crank operation in 12-V vehicle systems. |
| Input Voltage Range | 5.5 V to 40 V continuous; survives −50 V transients and −24 V reverse polarity-meets ISO 7637-2 pulse 3a/3b and reverse-battery test requirements. |
| Output Current | 50 mA maximum continuous-sufficient for powering CAN transceivers, low-power MCUs, or analog sensors without external boost. |
| Thermal Shutdown | Activates at ~160°C junction; auto-recovery enables fault-tolerant operation in enclosed engine bay enclosures without manual reset. |
| Stability Requirement | Requires 22 µF output capacitor with 300 mΩ–8 Ω ESR-mandates careful capacitor selection (e.g., tantalum or aluminum polymer) to prevent oscillation. |
Pinout & Package
SOT-223 (DCY) package with exposed thermal pad (TAB) on bottom; 4-pin configuration optimized for thermal dissipation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Unregulated input | Accepts 5.5–40 V DC; must be decoupled with ≥100 nF ceramic if >3″ from bulk filter-critical for noise rejection in infotainment power rails. |
| 2: GND | Ground reference | Common return for input/output paths; connects to thermal pad-requires solid copper pour and multiple vias for thermal management. |
| 3: OUT | Regulated output | Delivers stable 3.0 V; requires 22 µF/300 mΩ–8 Ω COUT placed adjacent to pin-failure causes instability or ripple amplification. |
| 4: GND (TAB) | Thermal ground | Exposed pad tied to PCB ground plane-primary heat path; accounts for >70% of thermal resistance reduction vs. non-TAB variants. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 15 μA max at 100 μA load-reduces parasitic drain in parked-vehicle monitoring circuits, extending 12-V battery life beyond 5 years. |
| Reverse polarity protection | Withstands −24 V applied to IN-eliminates need for external series diode in battery-connected applications, saving BOM cost and forward drop loss. |
| Transient survival | Rated for −50 V input spikes-survives load-dump and jump-start events per ISO 7637-2 without latch-up or degradation. |
| Wide temp range | −40°C to +125°C operation-qualified for under-hood placement near ECUs or transmission control units without derating. |
| Internal protection | Integrated short-circuit limit and thermal shutdown-prevents catastrophic failure during wiring faults or solder shorts in production assemblies. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Powering LIN transceivers and door-lock actuators in BCMs with intermittent 12-V supply and strict 20-μA sleep budget. IC Role / Device Role / Timing Role: Primary 3.0-V LDO supplying MCU I/O and communication peripherals during ignition-off state. Use Value: 15-μA quiescent current prevents battery depletion over months of vehicle storage; 40-V rating handles alternator ripple and load dump. |
Use Scenario: Regulating power for wireless vibration sensors mounted on motors or pumps in factory automation systems. IC Role / Device Role / Timing Role: Standby-mode LDO maintaining real-time clock and wake-up circuitry while main system sleeps. Use Value: −40°C to 125°C rating supports operation in unconditioned industrial environments; reverse-polarity tolerance prevents field-repair damage. |
| Telematics Control Unit | Point-of-Load for Legacy MCU |
Use Scenario: Providing clean 3.0-V rail to GPS/GNSS receivers and cellular modems in fleet-tracking hardware exposed to automotive electrical noise. IC Role / Device Role / Timing Role: Low-noise post-regulator filtering switching converter output to meet RF front-end PSRR requirements. Use Value: 500 μV RMS output noise (10 Hz–100 kHz) and −60 dB ripple rejection minimize phase noise in GNSS signal acquisition. |
Use Scenario: Replacing aging 78L03 linear regulators in legacy industrial controllers where board space and thermal headroom are constrained. IC Role / Device Role / Timing Role: Drop-in upgrade delivering same 3.0-V output with 5× lower quiescent current and improved thermal performance. Use Value: SOT-223 footprint matches TO-92 pad layout with minimal rework; 62.8°C/W RθJA enables 50 mA at 85°C ambient without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73330PDBVR | Lower IQ (350 nA), but only 300 mA max output; 1.8–5.5 V input; no reverse-polarity or −50 V transient rating. | Best for ultra-low-power IoT nodes-not suitable for automotive or harsh industrial environments. | Select TLV73330PDBVR only when sub-microamp IQ dominates design priority and input transients are absent. |
| NCP1117ST30T3G | Higher IQ (6 mA), 1 A output, TO-220/SOT-223; no reverse-polarity or transient protection; ±2% tolerance only at 25°C. | Used in cost-sensitive industrial supplies where thermal margin exists and battery life is not critical. | Choose NCP1117ST30T3G for high-current, low-cost applications-but verify thermal design and add external protection diodes. |
Compared with TLV73330PDBVR and NCP1117ST30T3G, the LM2936MPX-3.0/NOPB uniquely balances ultra-low IQ, automotive-grade transient robustness, and SOT-223 thermal efficiency-making it irreplaceable in safety-critical, battery-backed automotive subsystems.
Availability
LM2936MPX-3.0/NOPB is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor networks, and telematics control units requiring stable component supply across extended product lifecycles.
Supply support for LM2936MPX-3.0/NOPB 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in power management ICs for automotive and industrial markets.
The LM2936 product line delivers ultra-low-quiescent-current LDOs engineered specifically for automotive battery-sustained systems-prioritizing longevity, transient resilience, and wide-temperature reliability over raw output current.
FAQ
What is the minimum input voltage required for regulation in LM2936MPX-3.0/NOPB?
The LM2936MPX-3.0/NOPB enters regulation when input voltage exceeds VOUT + 1 V, so minimum VIN is 4.0 V. However, stable operation with full 50 mA output requires VIN ≥ VOUT + 2 V (i.e., ≥5.0 V) to ensure adequate headroom for dropout and thermal margin. Below 4.0 V, the output tracks VIN minus PNP saturation voltage.
Does LM2936MPX-3.0/NOPB include a shutdown pin?
No, the LM2936MPX-3.0/NOPB does not include a shutdown pin. That feature is exclusive to the LM2936BM SOIC-8 variant. The SOT-223 package (MPX) has only IN, GND, OUT, and thermal TAB pins-making it a simple three-terminal regulator with no enable control.
What output capacitor is required for stable operation of LM2936MPX-3.0/NOPB?
The LM2936MPX-3.0/NOPB requires a minimum 22 µF output capacitor with ESR between 300 mΩ and 8 Ω across the full operating temperature range. Ceramic capacitors may be used only with a series resistor (typically 500 mΩ–1 Ω) to emulate required ESR; aluminum polymer or tantalum are preferred for direct replacement.
Can LM2936MPX-3.0/NOPB withstand reverse battery connection?
Yes, the LM2936MPX-3.0/NOPB withstands −24 V reverse polarity on the IN pin for 1 ms per ISO 7637-2, thanks to its PNP pass device architecture. This eliminates the need for an external blocking diode in automotive battery-connected designs, reducing voltage drop and thermal loss.
What is the thermal resistance (RθJA) of LM2936MPX-3.0/NOPB in its SOT-223 package?
The LM2936MPX-3.0/NOPB in SOT-223 (DCY) package has a junction-to-ambient thermal resistance (RθJA) of 62.8°C/W under standard JEDEC PCB conditions. With proper thermal pad layout (solid ground pour + ≥4 vias), effective RθJA can improve to ≤45°C/W, enabling 50 mA continuous output at 85°C ambient.
LM2936MPX-3.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 50mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 15 µA
- Current - Supply (Max):
- 2.5 mA
- PSRR:
- 60dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-4
LM2936MPX-3.0/NOPB FAQ
1.How can I place an order for LM2936MPX-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2936MPX-3.0/NOPB 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 LM2936MPX-3.0/NOPB reliable?
The price and inventory of LM2936MPX-3.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2936MPX-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2936MPX-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2936MPX-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2936MPX-3.0/NOPB?
LM2936MPX-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2936MPX-3.0/NOPB 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 LM2936MPX-3.0/NOPB?
For technical support, including LM2936MPX-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2936MPX-3.0/NOPB requirements.
6.How does Aetrix verify that LM2936MPX-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2936MPX-3.0/NOPB 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 LM2936MPX-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2936MPX-3.0/NOPB?
All LM2936MPX-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2936MPX-3.0/NOPB, 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 LM2936MPX-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM2936MPX-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2936MPX-3.0/NOPB 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
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
