Texas Instruments LM9036MM-5.0

Overview

LM9036MM-5.0 from Texas Instruments is a fixed-output 5.0 V, 50 mA ultra-low quiescent current linear voltage regulator in an 8-pin VSSOP package. It features ≤25 µA ground pin current at 0.1 mA load, 200 mV typical dropout at 50 mA, ±5% output tolerance over line/load/temperature, and −45 V reverse transient protection - designed for automotive battery systems requiring extended standby life.

For engineers reviewing the LM9036MM-5.0 datasheet, LM9036MM-5.0 pinout, LM9036MM-5.0 application, or LM9036MM-5.0 equivalent, key selection criteria include ultra-low IQ operation under light loads, reverse-battery survivability, thermal shutdown behavior at 150°C, and compatibility with low-ESR ceramic output capacitors (0.3–8 Ω).

Technical Context

The LM9036MM-5.0 uses a PNP pass transistor architecture enabling low dropout and inherent reverse-battery protection without external components. Its internal reference and error amplifier maintain regulation across −40°C to +125°C ambient temperature with no minimum load requirement.

It integrates short-circuit current limiting (65–250 mA), thermal shutdown (typically 150°C), and operates up to 40 V input while surviving transients to −45 V/+55 V. The VSSOP-8 package includes an exposed thermal pad for improved power dissipation handling in space-constrained automotive modules.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package with 1.1 mm max height, 3.0 mm × 3.0 mm body, and exposed thermal pad (PowerPAD™) on underside for enhanced thermal performance. Pin 1 index area located at top-left corner per JEDEC MO-187.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-quiescent-current LDO regulator applications.

Compared with TPS76350DBVR and MCP1703T-5002E/MB, the LM9036MM-5.0 uniquely combines automotive-grade reverse-battery survivability, guaranteed 50 mA output at high ambient temperatures, and VSSOP thermal performance - making it the only option qualified for direct battery connection in harsh under-hood locations without supplemental protection.

Availability

LM9036MM-5.0 is available at Aetrix Electronics and suitable for automotive body electronics, telematics modules, and engine sensor interfaces requiring stable component supply across extended product lifecycles and temperature extremes.

Supply support for LM9036MM-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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The LM9036MM-5.0 belongs to TI's automotive-qualified linear regulator family, engineered specifically for battery-powered vehicle subsystems demanding ultra-low standby current, reverse-battery resilience, and AEC-Q100-compliant reliability.

FAQ

What is the maximum input voltage the LM9036MM-5.0 can handle continuously?

The LM9036MM-5.0 has a maximum continuous operating input voltage of 40 V. While it can survive transient inputs up to +55 V and −45 V, sustained operation above 40 V risks exceeding safe operating area limits and triggering thermal shutdown. For reliable long-term use in 24 V automotive systems, design input rails to remain ≤40 V under all conditions including load dump.

Does the LM9036MM-5.0 require an external capacitor for stability?

Yes, the LM9036MM-5.0 requires an output bypass capacitor of 10–22 µF with ESR between 0.3 Ω and 8 Ω for stability. Ceramic capacitors meeting these ESR specifications are recommended. Placement must be within 5 mm of the OUT and GND pins, and the capacitor must be rated for the full operating temperature range (−40°C to +125°C).

How does the LM9036MM-5.0 achieve reverse-battery protection?

The LM9036MM-5.0 achieves reverse-battery protection through its internal PNP pass transistor architecture, which blocks current flow when the input voltage falls below ground. This intrinsic behavior eliminates the need for an external series diode and allows the device to survive −45 V applied to the IN pin without damage or excessive leakage - a key differentiator for automotive battery-connected circuits.

Can the LM9036MM-5.0 deliver its full 50 mA output at 125°C ambient temperature?

No - at 125°C ambient, the LM9036MM-5.0 cannot sustain 50 mA continuously due to thermal limitations. With its VSSOP-8 package θJA of 200°C/W, maximum allowable power dissipation drops to ~0.125 W. At 50 mA and 200 mV dropout, power dissipation is 10 mW - well within limit - but input voltage must be reduced to avoid exceeding junction temperature. Full 50 mA is achievable only when ambient is ≤85°C with proper PCB copper area.

What is the purpose of the multiple ground pins on the LM9036MM-5.0 VSSOP package?

The LM9036MM-5.0 uses six dedicated ground pins (pins 2, 4–8) to minimize ground impedance, improve PSRR, enhance thermal conduction to the PCB, and provide separate return paths for internal bias, output stage, and protection circuitry. This multi-ground architecture reduces voltage offset errors and maintains regulation accuracy under dynamic load conditions common in automotive microcontroller applications.