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Texas Instruments LM2936MPX-5.0
- Part No.:
- LM2936MPX-5.0
- Manufacturer:
- Texas Instruments
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
LM2936MPX-5.0.pdf
- Description:
- IC REG LINEAR 5V 50MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,318
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Product details
Overview
LM2936MPX-5.0 from Texas Instruments is an ultra-low quiescent current (≤15 μA at 100 μA load), fixed 5.0 V, 50 mA LDO voltage regulator in SOT-223 package, featuring reverse battery protection, −50 V reverse transient tolerance, and 40 V maximum operating input voltage - designed for automotive body electronics, remote sensors, and always-on battery-powered systems.
For engineers reviewing the LM2936MPX-5.0 datasheet, LM2936MPX-5.0 pinout, LM2936MPX-5.0 application, or LM2936MPX-5.0 equivalent, key selection considerations include dropout voltage (200 mV @ 50 mA), ±2% initial output tolerance, thermal shutdown behavior, and compatibility with low-ESR 10 µF output capacitors per TI's stability requirements.
Technical Context
The LM2936MPX-5.0 uses a PNP pass transistor architecture enabling low dropout operation while maintaining regulation down to 40 V input. Its internal circuitry integrates reverse polarity protection, short-circuit current limiting (65–250 mA), and thermal shutdown triggered at ~160°C junction temperature.
Unlike standard LDOs, it sustains ultra-low quiescent current across full temperature range (−40°C to +125°C) and load conditions (100 μA to 50 mA), with line regulation of ≤10 mV over 9–16 V input and load regulation ≤30 mV across 100 μA–50 mA output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V with ±2% initial tolerance - ensures stable MCU core or sensor biasing without external feedback. |
| Max Output Current | 50 mA continuous - sufficient for microcontrollers, CAN transceivers, or low-power RF modules in sleep mode. |
| Quiescent Current | ≤15 μA at 100 μA load - enables >10-year battery life in coin-cell–powered IoT endpoints. |
| Dropout Voltage | 200 mV typical at 50 mA - allows regulation from 5.2 V input, critical for degraded battery operation. |
| Input Voltage Range | Up to 40 V operating / −50 V reverse transient survival - supports 12 V/24 V automotive and industrial bus environments. |
| Thermal Protection | Internal shutdown at ~160°C junction - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Reverse Polarity Tolerance | Withstands −50 V input for 1 ms - eliminates need for external series diode in battery-reversal-prone installations. |
Pinout & Package
SOT-223 package (Package Drawing DCY0004A) with 4 terminals: Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output, Pin 4 = Tab (thermally connected to ground). Thermal resistance θJA = 149°C/W; θJC = 36°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input (VIN) | Accepts 5.5 V to 40 V unregulated supply; requires ≥10 µF low-ESR input capacitor if located >2″ from bulk filter. |
| Pin 2 | Ground (GND) | Reference node for regulation and thermal path; electrically and thermally tied to exposed tab (Pin 4). |
| Pin 3 | Output (VOUT) | Delivers regulated 5.0 V; requires ≥10 µF ceramic output capacitor with ESR ≤8 Ω for stability per TI Figure 15. |
| Pin 4 (Tab) | Thermal Ground | Exposed copper pad soldered to PCB ground plane; mandatory for thermal performance - improves power handling by ~30%. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 15 μA max at 100 μA load enables multi-year operation on CR2032 batteries in wake-on-event systems. |
| Integrated reverse protection | −50 V transient survival eliminates need for external blocking diode - reduces BOM count and forward drop loss. |
| Stable with ceramic capacitors | Compatible with 10 µF X7R ceramics (ESR ≤8 Ω), simplifying layout and avoiding tantalum reliability concerns. |
| Wide temperature operation | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial control cabinet use. |
| Robust fault protection | Combines thermal shutdown, short-circuit current limit (120 mA typ), and reverse-battery hardening in single die. |
Applications
| Automotive Body Control Module | Industrial Remote Sensor Node |
|---|---|
Use Scenario: Powering LIN transceivers and door-lock actuators in 12 V vehicle electrical systems with frequent battery disconnects. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying microcontroller I/O and communication peripherals during ignition-off standby. Use Value: Reverse polarity tolerance prevents damage during jump-start events; 15 μA IQ extends battery reserve time beyond 3 months. |
Use Scenario: Long-life wireless temperature/humidity sensor deployed in HVAC ducts or factory floors with no maintenance access. IC Role / Device Role / Timing Role: Regulator for ultra-low-power MCU (e.g., MSP430FR) and sub-GHz RF SoC during 99.9% sleep duty cycle. Use Value: 200 mV dropout allows operation down to 5.2 V input - extends usable range of two-AA alkaline stack from 3.2 V to 2.6 V per cell. |
| Medical Wearable Monitor | Smart Meter Auxiliary Rail |
Use Scenario: Continuous glucose monitor powered by rechargeable Li-ion with strict leakage current limits. IC Role / Device Role / Timing Role: Always-on 5 V rail for real-time clock, memory retention, and BLE advertising state machine. Use Value: ±2% initial output tolerance ensures ADC reference stability; 500 μV RMS noise avoids signal integrity degradation in analog front-end. |
Use Scenario: Secondary 5 V supply for metrology IC and PLC interface in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Isolated auxiliary regulator fed from 24 V DC backup supply during main AC failure. Use Value: 40 V max input withstands induced surges on long utility wiring; −40°C to +125°C rating covers outdoor meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0533PDBVR | Lower IQ (250 nA), but only 200 mA max output and 5.5 V max input - unsuitable for 24 V automotive or high-voltage industrial inputs. | Best for coin-cell–only devices needing nanoamp IQ; cannot replace LM2936MPX-5.0 where 40 V input or reverse protection is required. | Select only when input never exceeds 5.5 V and ultra-deep sleep dominates system power budget. |
| MCP1703T-5002E/MB | Similar 5 V/250 mA output, but lacks reverse polarity protection and only rated to −30 V transient - requires external diode for automotive robustness. | Acceptable for 12 V consumer electronics with controlled power-up; not qualified for AEC-Q100 or harsh reverse-battery environments. | Choose only for cost-sensitive non-automotive designs where external protection can be added and thermal margin is ample. |
Compared with TPS7A0533PDBVR and MCP1703T-5002E/MB, the LM2936MPX-5.0 uniquely delivers 40 V operation, −50 V reverse survival, and 15 μA IQ in a single SOT-223 package - making it irreplaceable in battery-backed automotive and industrial edge nodes where both voltage resilience and micropower are mandatory.
Availability
LM2936MPX-5.0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial remote sensor nodes, and medical wearable monitors requiring stable component supply across extended temperature and voltage ranges.
Supply support for LM2936MPX-5.0 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, embedded processing, and digital signal technologies, with leadership in power management innovation.
The LM2936 product line was engineered specifically for ultra-low-power, high-voltage-tolerant regulation in automotive and industrial battery systems - prioritizing reverse protection, wide temperature operation, and micropower efficiency over raw current capability.
FAQ
What is the minimum input voltage required for the LM2936MPX-5.0 to maintain regulation?
The LM2936MPX-5.0 requires a minimum input voltage of 5.2 V to sustain 5.0 V output at 50 mA load, based on its 200 mV typical dropout voltage. At lighter loads (e.g., 100 μA), dropout drops to 100 mV, allowing regulation from as low as 5.1 V. Input below 5.1 V causes output to track input linearly.
Does the LM2936MPX-5.0 require an external capacitor for stability, and what type is recommended?
Yes, the LM2936MPX-5.0 requires a minimum 10 µF ceramic output capacitor with ESR ≤8 Ω, placed directly between VOUT and GND pins. TI's datasheet Figure 15 confirms stability with X7R/X5R types; tantalum or aluminum electrolytics are not recommended due to ESR drift and aging effects.
Can the LM2936MPX-5.0 be used in automotive applications with 24 V nominal battery systems?
Yes - the LM2936MPX-5.0 is explicitly rated for 40 V maximum operating input and −50 V reverse transient survival, making it suitable for 24 V commercial vehicle systems. Its −40°C to +125°C operating range and integrated reverse protection meet AEC-Q100 stress requirements for body electronics.
How does thermal performance change when the exposed tab (Pin 4) is not soldered to a PCB ground plane?
Without soldering the exposed tab (Pin 4) to a ≥1 cm² 2 oz. copper ground plane, θJA degrades from 149°C/W to >200°C/W. This reduces safe continuous output current at 25°C ambient from 50 mA to ~25 mA - risking thermal shutdown under full load, especially above 60°C ambient.
Is the LM2936MPX-5.0 pin-compatible with other LM2936 variants like the SOIC-8 or TO-92 versions?
No - the LM2936MPX-5.0 uses a 4-pin SOT-223 package (DCY0004A), while SOIC-8 (D0008A) and TO-92 (LP0003A) variants have different pin counts, layouts, and thermal characteristics. Direct PCB replacement is not possible without redesign; only functional equivalence applies.
LM2936MPX-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 50mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 9 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-5.0 FAQ
1.How can I place an order for LM2936MPX-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2936MPX-5.0 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-5.0 reliable?
The price and inventory of LM2936MPX-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2936MPX-5.0 is usually 5 days.
3.What payment methods are accepted for LM2936MPX-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2936MPX-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2936MPX-5.0?
LM2936MPX-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2936MPX-5.0 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-5.0?
For technical support, including LM2936MPX-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2936MPX-5.0 requirements.
6.How does Aetrix verify that LM2936MPX-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2936MPX-5.0 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-5.0 meets industry standards.
7.What is the process for return or replacement of LM2936MPX-5.0?
All LM2936MPX-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2936MPX-5.0, 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-5.0 part is unused and in its original packaging.
Return procedure for LM2936MPX-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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