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Texas Instruments LM2936QM-5.0/NOPB
- Part No.:
- LM2936QM-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2936QM-5.0/NOPB.pdf
- Description:
- IC REG LINEAR 5V 50MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:585
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Product details
Overview
LM2936QM-5.0/NOPB from Texas Instruments is an automotive-grade ultralow-quiescent-current LDO voltage regulator with fixed 5-V output, 50-mA output current capability, ±2% initial output tolerance, and 200-mV typical dropout at 50 mA. It features reverse battery protection, −50-V input transient survival, and operates across −40°C to +125°C ambient for engine control units and body electronics.
For engineers reviewing the LM2936QM-5.0/NOPB datasheet, LM2936QM-5.0/NOPB pinout, LM2936QM-5.0/NOPB application, or LM2936QM-5.0/NOPB equivalent, key selection criteria include quiescent current ≤15 μA at 100 μA load, 40-V max operating input, thermal shutdown at ~160°C, and mandatory 10-μF/0.3–8-Ω ESR output capacitor for stability.
Technical Context
The LM2936QM-5.0/NOPB uses a PNP pass transistor architecture enabling low dropout and inherent reverse-polarity input protection. Its internal bandgap reference and error amplifier maintain regulation over line (5.5–40 V), load (100 μA–50 mA), and temperature (−40°C to +125°C) with ±3% total output tolerance.
It lacks a shutdown pin - unlike the LM2936QHBMA variant - and integrates thermal shutdown (~160°C trip), short-circuit current limiting (65–250 mA), and ripple rejection of −40 dB at 120 Hz. No undervoltage lockout or overvoltage shutdown is implemented.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V, ±2% initial tolerance ensures accurate microcontroller core supply without external feedback. |
| Quiescent Current | ≤15 μA at 100 μA load enables >10-year battery life in always-on automotive modules. |
| Dropout Voltage | 200 mV typical at 50 mA allows operation down to VIN = 5.2 V - critical for cold-crank scenarios. |
| Input Voltage Range | 5.5 V to 40 V operating; survives −50 V transients - meets ISO 7637-2 pulse 3a/b requirements. |
| Output Current | 50 mA continuous - sufficient for CAN transceivers, sensors, and small logic rails. |
| Thermal Protection | Internal thermal shutdown at ~160°C junction temperature prevents damage during overload or poor heatsinking. |
| Package | 8-pin SOIC (D package), 4.90 mm × 3.91 mm body - compatible with standard automated assembly. |
Pinout & Package
LM2936QM-5.0/NOPB is housed in an 8-pin SOIC (D) package with exposed thermal pad connection via four GND pins (pins 2, 3, 6, 7). The package supports JEDEC-standard PCB layout with 111.4°C/W θJA (High-K board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 8) | Unregulated input | Accepts 5.5–40 V; requires local 100-nF bypass if >3 inches from bulk filter. |
| OUT (Pin 1) | Regulated output | Delivers stable 5.0 V; mandates 10-μF output capacitor with 0.3–8-Ω ESR for loop stability. |
| GND (Pins 2, 3, 6, 7) | Ground reference & thermal path | All four pins connect internally to die substrate and thermal pad - must be soldered to large copper pour for thermal performance. |
| NC (Pins 4, 5) | No internal connection | May be left floating or tied to GND; no electrical function or thermal benefit. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation - suitable for under-hood automotive applications. |
| Reverse battery protection | Withstands −15 V applied to IN with <−0.3 V output - eliminates need for external series diode. |
| Ultralow IQ standby mode | 15 μA max at 100 μA load enables compliance with OEM sleep-current budgets (<100 μA). |
| Transient survival | Survives −50 V/1 ms input transients per ISO 7637-2 - reduces need for external TVS clamping. |
| Integrated short-circuit limit | 65–250 mA foldback current limit prevents catastrophic failure during wiring faults. |
Applications
| Engine Control Unit (ECU) Sensor Bias | Body Control Module (BCM) Micro Supply |
|---|---|
Use Scenario: Powers Hall-effect crankshaft position sensor and analog front-end in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Provides clean, stable 5-V bias rail independent of battery voltage sag during cranking (down to 5.2 V). Use Value: Enables reliable sensor operation at cold-crank VIN = 5.5 V while consuming <15 μA in sleep mode between ignition cycles. | Use Scenario: Supplies 5-V logic rail to microcontroller and LIN transceiver in door module or lighting controller. IC Role / Device Role / Timing Role: Delivers regulated power during vehicle off-state with minimal parasitic drain. Use Value: Supports <100 μA total system sleep current - meeting OEM requirements for 10+ year battery hold without maintenance. |
| Telematics Telemetry Power | ADAS Camera Module Standby Rail |
Use Scenario: Powers GPS/GSM baseband IC and real-time clock in connected car telematics units. IC Role / Device Role / Timing Role: Maintains RTC accuracy and cellular modem readiness during ignition-off periods. Use Value: Survives −50 V load-dump transients on vehicle battery rail without latch-up or degradation. | Use Scenario: Supplies always-on 5-V rail to image sensor interface and wake-on-motion circuitry in rear-view cameras. IC Role / Device Role / Timing Role: Provides fault-tolerant power during extended parking with reverse-battery and thermal fault immunity. Use Value: Eliminates need for external reverse-polarity diode and discrete thermal cutoff - reducing BOM count by two components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76350QDBVRQ1 | Lower IQ (1.3 μA typ), but only 150-mA output; 6-V max input - not suitable for 40-V automotive systems. | Limited to infotainment or low-power modules; cannot replace LM2936QM-5.0/NOPB in engine bay applications. | Select only when input voltage stays below 6 V and higher output current is unnecessary. |
| NCP1117ST50T3G | Higher IQ (6 mA typ), 1-A output, TO-220/TO-263 package - lacks AEC-Q100 grade and reverse-battery protection. | Requires external reverse-polarity diode and thermal management; unsuitable for space-constrained or safety-critical locations. | Use only in non-automotive industrial designs where cost outweighs reliability and qualification requirements. |
Compared with TPS76350QDBVRQ1 and NCP1117ST50T3G, the LM2936QM-5.0/NOPB uniquely combines AEC-Q100 Grade 1 qualification, −50-V transient survival, reverse-battery immunity, and ultralow IQ in a single SOIC package - making it irreplaceable for under-hood 5-V biasing where qualification and fault resilience are mandatory.
Availability
LM2936QM-5.0/NOPB is available at Aetrix Electronics and suitable for automotive engine control, body electronics, and telematics applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LM2936QM-5.0/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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, personal electronics, and communications markets.
The LM2936Q product line was designed specifically for automotive battery-powered systems requiring ultralow quiescent current, high-voltage tolerance, and robust fault protection - targeting ECU, BCM, and ADAS subsystems.
FAQ
What is the maximum input voltage the LM2936QM-5.0/NOPB can withstand without damage?
The LM2936QM-5.0/NOPB has an absolute maximum input voltage rating of 60 V for survival, but its recommended operating range is 5.5 V to 40 V. It survives −50 V transients for 1 ms per ISO 7637-2. Exceeding 40 V continuously risks thermal shutdown or safe operating area violation, especially at high ambient temperatures or full load. Always refer to the LM2936QM-5.0/NOPB datasheet Section 6.1 for stress limits.
Does the LM2936QM-5.0/NOPB include a shutdown pin?
No, the LM2936QM-5.0/NOPB does not include a shutdown (SD) pin. That feature is exclusive to the LM2936QHBMA variant. The LM2936QM-5.0/NOPB is always-on when valid input voltage is applied. If system-level enable/disable control is required, an external MOSFET switch or logic-controlled pre-regulator must be used upstream of the LM2936QM-5.0/NOPB input.
What output capacitor is required for stable operation of the LM2936QM-5.0/NOPB?
The LM2936QM-5.0/NOPB requires a minimum 10-μF output capacitor with an equivalent series resistance (ESR) between 0.3 Ω and 8 Ω across the full operating temperature range. Ceramic capacitors may be used only if a series resistor (typically 500 mΩ–1 Ω) is added to meet the ESR requirement. The capacitor must be placed as close as possible to the OUT and GND pins to ensure stability and transient response.
Is the LM2936QM-5.0/NOPB qualified for automotive use?
Yes, the LM2936QM-5.0/NOPB is AEC-Q100 qualified for Grade 1 (−40°C to +125°C ambient), with full test reports covering HTOL, TC, UHAST, and ESD. It is explicitly intended for automotive applications including engine control, body electronics, and telematics. The "Q" suffix in the part number denotes automotive qualification, and TI provides PPAP documentation upon request.
How does the LM2936QM-5.0/NOPB handle reverse battery connection?
The LM2936QM-5.0/NOPB incorporates internal reverse-battery protection. When −15 V is applied to the IN pin with a 500-Ω load, the output remains below −0.3 V and draws negligible current - preventing damage to downstream circuitry. This eliminates the need for an external series diode in most automotive installations, reducing voltage drop and heat generation. Reverse polarity protection is inherent to the PNP pass device architecture.
LM2936QM-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2936QM-5.0/NOPB FAQ
1.How can I place an order for LM2936QM-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2936QM-5.0/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 LM2936QM-5.0/NOPB reliable?
The price and inventory of LM2936QM-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2936QM-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2936QM-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2936QM-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2936QM-5.0/NOPB?
LM2936QM-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2936QM-5.0/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 LM2936QM-5.0/NOPB?
For technical support, including LM2936QM-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2936QM-5.0/NOPB requirements.
6.How does Aetrix verify that LM2936QM-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2936QM-5.0/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 LM2936QM-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2936QM-5.0/NOPB?
All LM2936QM-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2936QM-5.0/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 LM2936QM-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM2936QM-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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