STMicroelectronics L6932H1.2TR

Overview

L6932H1.2TR from STMicroelectronics is an AEC-Q100 qualified ultra-low dropout linear regulator for automotive power rails, delivering up to 2 A output current with 1.2 V to 5 V adjustable output, 1% voltage accuracy, and 200 mΩ R_DS(on) at 25 °C. It integrates enable control, open-drain Power Good monitoring, thermal shutdown (150 °C trip, 20 °C hysteresis), and short-circuit protection - deployed in engine control units and ADAS domain controllers.

For engineers reviewing the L6932H1.2TR datasheet, L6932H1.2TR pinout, L6932H1.2TR application, or L6932H1.2TR equivalent, key selection criteria include input voltage range (2–14 V), quiescent current (200 µA at any load), load regulation (15 mV over 0.1–2 A), thermal resistance (34 °C/W), and HSOP-8 package compatibility with automotive PCB layout constraints.

Technical Context

The L6932H1.2TR uses an internal 50 mΩ N-channel MOSFET as the pass element, enabling low dropout operation down to 200 mV at full 2 A load. Its feedback loop is externally configured via a resistor divider on the FB pin, supporting precise output programming across 1.2–5 V with ±1% tolerance over temperature and line.

It implements current limiting at 2.5 A (±8%) with sensing integrated into the power MOSFET, and features an open-drain PGOOD output that asserts low when V_OUT drops below 90% of the programmed value, with 10% hysteresis. Shutdown current is 25 µA at 25 °C.

Key Specifications

Pinout & Package

Package: HSOP-8 (exposed pad), RoHS-compliant ECOPACK®, thermal resistance R_thJA = 34 °C/W on standard PCB layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLE42744G and TPS7B8250QDDARQ1, the L6932H1.2TR offers balanced performance for mainstream automotive LDO use: proven AEC-Q100 Grade 0 reliability, 2 A capability, and HSOP-8 thermal robustness - making it optimal for cost-sensitive, high-volume ECU and BCM deployments.

Availability

L6932H1.2TR is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and body control modules requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.

Supply support for L6932H1.2TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and consumer markets since 1987.

The L6932H1.2TR belongs to ST's automotive-grade linear regulator product line, engineered specifically for robust, low-noise power delivery in harsh vehicle environments - emphasizing thermal resilience, AEC-Q100 compliance, and functional safety readiness.

FAQ

What is the minimum input voltage required for regulation at 2 A output?

The L6932H1.2TR maintains regulation down to 2 V input, but dropout voltage depends on load and temperature. At 2 A and 25 °C, R_DS(on) ≤ 200 mΩ yields ≤400 mV dropout - so 1.6 V minimum input is theoretically possible for 1.2 V output. However, datasheet specifies 2 V min for guaranteed operation across temperature and process variation, including cold-crank margin.

Can the L6932H1.2TR be used without the external feedback resistors?

No - the FB pin is mandatory for output voltage setting. The device has no internal reference divider; output is determined solely by the external R1/R2 network per V_OUT = 1.2 V × (1 + R1/R2). Omitting the divider leaves FB floating, causing undefined regulation and potential instability or overvoltage.

How does the PGOOD pin behave during thermal shutdown?

During thermal shutdown, the L6932H1.2TR disables the pass transistor and pulls PGOOD low - consistent with its fault-indication function. PGOOD remains low until both thermal recovery (junction ≤130 °C) and output voltage recovery (>90% of target) occur simultaneously, ensuring safe re-enabling only after full thermal and electrical stabilization.

Is the exposed thermal pad electrically connected internally?

Yes - the exposed pad in the HSOP-8 package is internally connected to GND. It must be soldered to a large PCB copper pour tied to the GND plane to achieve the specified R_thJA = 34 °C/W and ensure reliable thermal performance. Leaving it unconnected degrades thermal resistance by >50% and risks premature thermal shutdown.