STMicroelectronics E-L6932D1.2

Overview

E-L6932D1.2 from STMicroelectronics is an adjustable ultra-low-dropout linear regulator delivering up to 2A output current with 1.2V to 5V programmable output, 200mΩ typical R_DS(on), 1% voltage accuracy, and operation from 2V to 14V input. It integrates enable control, power-good signaling, thermal shutdown, and short-circuit protection-used in mobile PC I/O rails and chipset supply where tight regulation and low quiescent current (200µA) are critical.

For engineers reviewing the E-L6932D1.2 datasheet, E-L6932D1.2 pinout, E-L6932D1.2 application, or E-L6932D1.2 equivalent, this page provides verified package mapping (SO-8 4+4), confirmed ADJ/EN/PGOOD terminal functions, load regulation (15mV), line regulation (5mV), and thermal shutdown behavior (150°C trip with 20°C hysteresis).

Technical Context

The L6932D1.2 uses an internal 50mΩ N-channel MOSFET as the pass element, enabling ultra-low dropout operation down to (V_OUT + 200mV at 2A). Its error amplifier compares a resistive divider feedback against a 1.25V reference, supporting precise external adjustment from 1.2V to 5V.

Power-good detection monitors V_OUT with 90% threshold and 10% hysteresis via open-drain PGOOD; EN enables/disables regulation with 0.65V typical threshold. Thermal shutdown activates at 150°C with 20°C hysteresis, and current limiting fixes at 2.5A ±8% using internal MOSFET current sensing.

Key Specifications

Pinout & Package

Package: SO-8 (4+4), surface-mount, 1.27mm pitch, 5.0mm × 4.0mm body, 1.75mm max height per JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A4700RGWR and ADM7172ACPZ-R7, the E-L6932D1.2 uniquely balances 2A adjustability, 2–14V input range, and integrated PGOOD/EN in SO-8-making it optimal for space-constrained, multi-rail embedded systems requiring field-programmable outputs.

Availability

E-L6932D1.2 is available at Aetrix Electronics and suitable for mobile PC motherboard power delivery, handheld instrument analog supply, and PCMCIA card interface regulation requiring stable component supply across extended temperature and lifecycle demands.

Supply support for E-L6932D1.2 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 microcontrollers, power management ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The L6932 series belongs to ST's high-performance linear regulator product line, engineered specifically for portable and embedded systems demanding low dropout, high accuracy, and integrated protection in compact packages.

FAQ

What is the minimum input voltage required for 1.2V output at 2A?

The L6932D1.2 achieves ultra-low dropout: at 2A, the typical dropout is (2A × 200mΩ) = 400mV. Thus, minimum input is 1.2V + 0.4V = 1.6V. However, the datasheet specifies 2V minimum VIN for guaranteed operation across temperature and process variation-ensuring stability and protection functionality remain active.

Can the PGOOD pin drive a microcontroller GPIO directly?

Yes-PGOOD is an open-drain output rated for 1mA sink current. A standard 10kΩ pull-up to 3.3V or 5V provides sufficient logic-level signaling. The pin asserts low when V_OUT falls below 90% of the programmed value and releases high after recovery with 10% hysteresis-enabling direct connection to MCU reset or interrupt pins without buffering.

How does the EN pin behave during power-up sequencing?

EN has a 0.65V typical threshold with ±0.15V tolerance. When VIN rises, EN must exceed 0.65V before regulation begins. This allows controlled turn-on after upstream supplies stabilize. If EN is tied directly to VIN, startup occurs immediately upon VIN reaching ~0.65V-so external RC delay or sequencer control is recommended for strict multi-rail ordering.

Is an external compensation capacitor required for stability?

Not for standard tantalum or polymer output capacitors (≥10µF, ESR ~50–200mΩ). However, with low-ESR ceramic caps (<10mΩ), oscillation may occur due to loop zero shift. In such cases, adding a 1–10nF capacitor across the upper resistor (R1) of the ADJ divider restores phase margin-as validated in ST's application note AN2479 and Figure 9 of the L6932 datasheet.