Texas Instruments LM2936QMPX-5.0/NOPB

Overview

LM2936QMPX-5.0/NOPB from Texas Instruments is an AEC-Q100 Grade 1 qualified ultralow-quiescent-current LDO voltage regulator delivering a fixed 5.0 V output at up to 50 mA, with ≤15 μA quiescent current at 100 μA load, 200 mV typical dropout at 50 mA, ±2% initial output tolerance, and reverse-battery protection. It serves as the primary post-regulation power source for always-on automotive subsystems such as body control modules and telematics gateways.

For engineers reviewing the LM2936QMPX-5.0/NOPB datasheet, LM2936QMPX-5.0/NOPB pinout, LM2936QMPX-5.0/NOPB application, or LM2936QMPX-5.0/NOPB equivalent, key selection criteria include its 5.5–40 V input range, −40°C to +125°C operation, 0.3–8 Ω COUT ESR requirement, thermal shutdown behavior, and absence of shutdown pin in this variant.

Technical Context

The LM2936QMPX-5.0/NOPB uses a PNP pass transistor architecture enabling low dropout and inherent reverse-polarity 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.

It integrates thermal shutdown (typically 160°C trip), short-circuit current limiting (~65–250 mA), and −50 V transient survival capability. Unlike the HBMA variant, this part lacks a shutdown pin and is offered in the 3-pin TO-252 (NDP) package with exposed thermal tab.

Key Specifications

Pinout & Package

LM2936QMPX-5.0/NOPB is housed in a 3-pin TO-252 (NDP) surface-mount package with exposed thermal pad (Tab) connected internally to GND. The package measures 6.10 mm × 6.58 mm and is optimized for high-power-density automotive PCB layouts requiring efficient heat transfer to inner copper layers.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO voltage regulator applications.

Compared with TLV73350PDBVR and TPS7B6750QPWPRQ1, LM2936QMPX-5.0/NOPB uniquely balances automotive-grade ruggedness (−50 V transient, reverse-battery), ultra-low IQ, and TO-252 thermal performance - making it irreplaceable in cost-sensitive, thermally constrained BCM and sensor nodes where both longevity and robustness are non-negotiable.

Availability

LM2936QMPX-5.0/NOPB is available at Aetrix Electronics and suitable for automotive body electronics, telematics gateways, and occupant detection systems requiring stable component supply across extended vehicle lifecycles and global production ramps.

Supply support for LM2936QMPX-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, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and personal electronics markets.

The LM2936Q series was developed specifically for automotive power management in battery-connected, always-on subsystems - prioritizing quiescent current, transient robustness, and AEC-Q100 compliance over general-purpose features.

FAQ

What is the maximum input voltage rating for LM2936QMPX-5.0/NOPB?

The LM2936QMPX-5.0/NOPB has an absolute maximum input voltage rating of 60 V for transient survival (per ISO 7637-2 pulse 1), but its recommended operating input voltage range is 5.5 V to 40 V DC. Operation above 40 V risks exceeding safe operating area limits of the internal PNP pass device, especially under load, and is not supported for continuous operation. The 40 V limit ensures reliable regulation and thermal stability across the full temperature range.

Does LM2936QMPX-5.0/NOPB include a shutdown pin?

No, LM2936QMPX-5.0/NOPB does not include a shutdown (SD) pin. That feature is exclusive to the LM2936QHBMA variant (8-pin SOIC). The LM2936QMPX-5.0/NOPB is a 3-pin TO-252 device with only IN, GND, and OUT terminals. To achieve enable/disable control, external circuitry such as a MOSFET high-side switch must be added upstream of the IN pin.

What output capacitor is required for stable operation of LM2936QMPX-5.0/NOPB?

LM2936QMPX-5.0/NOPB requires a minimum 10 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–1 Ω) is added to meet the ESR requirement. Tantalum or aluminum polymer capacitors are preferred for direct compatibility and reliability in automotive environments.

Is LM2936QMPX-5.0/NOPB qualified for automotive applications?

Yes, LM2936QMPX-5.0/NOPB is AEC-Q100 qualified for Grade 1 automotive applications, with validated operation from −40°C to +125°C ambient temperature. It meets automotive-specific stress tests including thermal cycling, humidity bias, and mechanical shock. The "Q" suffix in the part number explicitly denotes automotive qualification, and the device is listed in TI's official AEC-Q100 stress test summary report for the LM2936Q family.

How does LM2936QMPX-5.0/NOPB handle reverse battery connection?

LM2936QMPX-5.0/NOPB provides intrinsic reverse-battery protection: when −15 V is applied to the IN pin, the output (OUT) remains clamped to <−0.3 V, preventing damage to downstream circuitry. This is achieved via internal PNP architecture and eliminates the need for an external series diode. The device also survives −50 V input transients for 1 ms, complying with ISO 7637-2 pulse 1 requirements for automotive electrical systems.