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Texas Instruments LM2936QMP-3.3/NOPB
- Part No.:
- LM2936QMP-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
LM2936QMP-3.3/NOPB.pdf
- Description:
- IC REG LINEAR 3.3V 50MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,502
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Product details
Overview
LM2936QMP-3.3/NOPB from Texas Instruments is an AEC-Q100 Grade 1 qualified ultralow-quiescent-current LDO voltage regulator delivering a fixed 3.3 V output at up to 50 mA, with ≤15 μA quiescent current at 100 μA load, ±2% initial output tolerance, and 200 mV typical dropout at full load. It serves as the primary power supply for always-on automotive modules such as body control units and remote keyless entry receivers.
For engineers reviewing the LM2936QMP-3.3/NOPB datasheet, LM2936QMP-3.3/NOPB pinout, LM2936QMP-3.3/NOPB application, or LM2936QMP-3.3/NOPB equivalent, key selection criteria include automotive-grade thermal robustness (−40°C to +125°C), reverse-battery protection, −50-V transient survival, and strict output capacitor ESR requirements (0.3–8 Ω) for stability in low-power battery systems.
Technical Context
The LM2936QMP-3.3/NOPB employs a PNP pass transistor architecture enabling low dropout and inherent reverse-polarity protection without external components. Its internal bandgap reference and error amplifier maintain regulation across 5.5 V to 40 V input while sustaining sub-15 μA quiescent current under light loads - critical for extended vehicle battery standby life.
Thermal shutdown activates at ~160°C junction temperature, and short-circuit current limiting caps output at 65–250 mA depending on conditions. Unlike variants with shutdown pins, the LM2936QMP-3.3/NOPB has no SD pin and operates continuously when powered within its absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% initial tolerance; ensures accurate biasing of 3.3-V microcontrollers and CAN transceivers without external feedback. |
| Quiescent Current | ≤15 μA at 100 μA load; enables >10-year battery hold-up in automotive telematics and alarm systems. |
| Input Voltage Range | 5.5 V to 40 V operating; supports direct connection to automotive battery rail including cold-crank (5.5 V) and load-dump (40 V) events. |
| Dropout Voltage | 200 mV typical at 50 mA; allows stable 3.3-V output even when battery drops to 3.5 V during cranking. |
| Output Tolerance | ±3% over line, load, and temperature (−40°C to +125°C); guarantees functional operation across full automotive ambient range. |
| Transient Protection | Withstands −50-V reverse-battery transients; eliminates need for external blocking diode in vehicle harnesses. |
| Stability Requirement | Requires 22 µF COUT with 0.3–8 Ω ESR; mandates careful capacitor selection (e.g., tantalum or aluminum polymer) for noise-sensitive sensors. |
Pinout & Package
LM2936QMP-3.3/NOPB is housed in a 3-pin TO-252 (NDP) surface-mount package with exposed thermal pad. The package measures 6.10 mm × 6.58 mm and features low thermal resistance (RθJA = 50.5°C/W) for passive heatsinking in constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Unregulated input | Accepts 5.5–40 V DC; must be decoupled with ≥100 nF ceramic capacitor if located >3 inches from bulk filter. |
| GND (Pin 2 & Tab) | Ground reference and thermal path | Tab is electrically and thermally connected to GND; requires soldered thermal pad area for reliable 50 mA operation at high ambient. |
| OUT (Pin 3) | Regulated output | Delivers 3.3 V; requires ≥22 µF output capacitor with 0.3–8 Ω ESR placed adjacent to pin for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation - meets automotive electronics reliability standards for engine bay and cabin modules. |
| Ultralow quiescent current | ≤15 μA at 100 μA load enables multi-year battery life in always-on vehicle security and tire pressure monitoring systems. |
| Reverse-battery protection | No external diode required; survives −15 V reverse polarity input without damage or output leakage - reduces BOM count and board space. |
| −50-V input transient survival | Withstands ISO 7637-2 Pulse 1 and Pulse 4a transients without latch-up or degradation - critical for 12-V vehicle electrical systems. |
| Integrated thermal shutdown | Auto-recovers after junction cools ~10°C; prevents permanent failure during sustained overload or poor PCB heatsinking. |
Applications
| Body Control Module (BCM) | Remote Keyless Entry (RKE) Receiver |
|---|---|
Use Scenario: Powers microcontroller, RF front-end, and EEPROM in vehicle door module with 24/7 battery monitoring. IC Role / Device Role / Timing Role: Primary 3.3-V LDO supplying logic and RF circuitry; maintains regulation during engine start (5.5 V input). Use Value: ≤15 μA IQ extends battery backup duration beyond 5 years; reverse-battery protection avoids field failures from incorrect jump-start wiring. |
Use Scenario: Supplies ultra-low-power ASK/OOK receiver IC and wake-up controller in key fob or vehicle antenna module. IC Role / Device Role / Timing Role: Standby-mode power source enabling <10 μA system sleep current; regulates during brief RF burst reception. Use Value: 200 mV dropout ensures clean 3.3-V rail even as coin cell voltage declines to 2.8 V; ±3% tolerance guarantees consistent RF demodulation performance. |
| Telematics Control Unit (TCU) | Automotive Camera Power Rail |
Use Scenario: Provides always-on 3.3-V supply to GPS baseband processor and cellular modem real-time clock during vehicle ignition-off state. IC Role / Device Role / Timing Role: Low-noise, low-IQ LDO supporting RTC and memory retention; interfaces with main PMIC via enable signal. Use Value: 500 μV RMS output noise prevents timing jitter in GPS PPS signals; −50-V transient rating protects against alternator load-dump coupling. |
Use Scenario: Powers image sensor and serializer IC in rear-view or surround-view camera module mounted near bumper. IC Role / Device Role / Timing Role: Dedicated 3.3-V analog rail for sensor analog front-end; isolated from noisy digital domains via separate LDO. Use Value: ±2% initial tolerance ensures consistent ADC reference accuracy across production lots; TO-252 thermal pad sustains 50 mA at 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333QDBVRQ1 | 300 mV dropout at 50 mA; 17 μA IQ; SOT-23-5 package with EN pin. | Requires external enable control; higher dropout limits use in low-input-voltage cranking scenarios. | Select when system-level enable sequencing is needed and board space permits SOT-23 footprint. |
| NCP1117ST33T3G | 1.2 V dropout at 800 mA; 6 mA IQ; TO-220/TO-263 package; not AEC-Q100 qualified. | Lacks automotive qualification, reverse-battery protection, and transient immunity - unsuitable for safety-critical vehicle systems. | Consider only for non-automotive industrial applications where cost outweighs qualification and protection requirements. |
Compared with TPS76333QDBVRQ1 and NCP1117ST33T3G, the LM2936QMP-3.3/NOPB uniquely combines AEC-Q100 Grade 1 qualification, −50-V transient survival, and ≤15 μA quiescent current in a thermally efficient TO-252 package - making it the only drop-in solution for automotive always-on power rails requiring long-term battery hold-up and robustness.
Availability
LM2936QMP-3.3/NOPB is available at Aetrix Electronics and suitable for automotive body electronics, telematics modules, and camera power systems requiring stable component supply across extended product lifecycles and stringent environmental compliance.
Supply support for LM2936QMP-3.3/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 designing analog ICs, embedded processors, and power management solutions for automotive, industrial, and consumer markets.
The LM2936Q series was developed specifically for automotive battery-powered systems demanding ultralow quiescent current, high-voltage resilience, and AEC-Q100 reliability - targeting body control, infotainment, and ADAS subsystems.
FAQ
What is the maximum input voltage the LM2936QMP-3.3/NOPB can withstand without damage?
The LM2936QMP-3.3/NOPB has an absolute maximum input voltage rating of 60 V for survival, but its recommended operating input voltage is limited to 40 V. It is explicitly rated to survive −50-V reverse-battery transients and 60-V positive transients per ISO 7637-2, though continuous operation above 40 V is not supported due to safe operating area constraints of the internal PNP pass device. Always refer to the LM2936QMP-3.3/NOPB datasheet Section 6.1 for stress limits.
Does the LM2936QMP-3.3/NOPB include a shutdown pin?
No, the LM2936QMP-3.3/NOPB does not include a shutdown (SD) pin. Shutdown functionality is only available on the LM2936QHBMA variant (5-V version with 8-pin SOIC). The LM2936QMP-3.3/NOPB is a 3-pin TO-252 device with IN, GND, and OUT terminals only - it operates continuously whenever valid input voltage is applied within its operating range.
What output capacitor is required for stable operation of the LM2936QMP-3.3/NOPB?
The LM2936QMP-3.3/NOPB requires a minimum 22 µF output capacitor with an equivalent series resistance (ESR) between 0.3 Ω and 8 Ω, rated for the full −40°C to +125°C operating temperature range. Ceramic capacitors may be used only if a series resistor (typically 500 mΩ to 1 Ω) is added to meet the ESR requirement. This specification is mandatory for loop stability and is documented in Section 8.2.2.1 of the LM2936QMP-3.3/NOPB datasheet.
Is the LM2936QMP-3.3/NOPB qualified for automotive applications?
Yes, the LM2936QMP-3.3/NOPB is AEC-Q100 qualified for Automotive Grade 1 (−40°C to +125°C ambient operating temperature). It meets all stress test requirements including HTOL, TC, UHAST, and ESD per JESD22, and is intended for use in body electronics, telematics, and other non-safety-critical automotive systems. Full qualification data is included in the LM2936QMP-3.3/NOPB official TI documentation.
How does the thermal performance of the LM2936QMP-3.3/NOPB compare across packages?
The LM2936QMP-3.3/NOPB uses the TO-252 (NDP) package, which offers RθJA = 50.5°C/W - significantly lower than SOIC (111.4°C/W) or VSSOP (173.4°C/W) variants. Its exposed thermal tab must be soldered to a dedicated GND copper pour to achieve this rating. At 50 mA load and 85°C ambient, junction temperature remains below 125°C with ≥1 cm² of 2-oz copper, making it suitable for compact automotive modules without forced airflow.
LM2936QMP-3.3/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):
- 3.3V
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-4
LM2936QMP-3.3/NOPB FAQ
1.How can I place an order for LM2936QMP-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2936QMP-3.3/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 LM2936QMP-3.3/NOPB reliable?
The price and inventory of LM2936QMP-3.3/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2936QMP-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM2936QMP-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2936QMP-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2936QMP-3.3/NOPB?
LM2936QMP-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2936QMP-3.3/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 LM2936QMP-3.3/NOPB?
For technical support, including LM2936QMP-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2936QMP-3.3/NOPB requirements.
6.How does Aetrix verify that LM2936QMP-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2936QMP-3.3/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 LM2936QMP-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM2936QMP-3.3/NOPB?
All LM2936QMP-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2936QMP-3.3/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 LM2936QMP-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM2936QMP-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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