STMicroelectronics L2720W13TR

Overview

L2720W13TR from STMicroelectronics is a dual low-drop power operational amplifier in SO16 (Wide) package, designed for high-current analog output stages in servo amplifiers, motor drivers, and linear power supplies. It delivers up to 1 A continuous output current per channel, operates from ±2 V to ±14 V split supply or 4–28 V single supply, and features ground-compatible inputs with ±28 V absolute max supply rating.

For engineers reviewing the L2720W13TR datasheet, L2720W13TR pinout, L2720W13TR application, or L2720W13TR equivalent, key selection criteria include output current capability (1 A), thermal shutdown protection, low saturation voltage (0.5–1.5 V at 1 A), dual-channel independence, and SO16 (Wide) mechanical compatibility for high-power PCB layouts.

Technical Context

The L2720W13TR integrates two independent high-output-power op-amps on a single monolithic die, each with rail-to-rail input stage and Class-AB output stage optimized for inductive load driving. Its architecture supports single-supply operation down to 4 V and split-supply operation as low as ±2 V per rail, enabling use in battery-powered and industrial control systems.

Internal thermal shutdown activates above 150 °C junction temperature, and clamp diodes protect inputs against overvoltage transients. Channel separation exceeds 60 dB at 1 kHz, ensuring minimal crosstalk in dual-axis motion control or stereo audio power stages where signal integrity between channels is critical.

Key Specifications

Pinout & Package

SO16 (Wide) package: 10.1–10.5 mm body width, 7.4–7.6 mm body length, 2.35–2.65 mm height, 1.27 mm lead pitch, with exposed thermal pad not present - thermal management relies on copper pour under pins 4/5/12/13.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-current operational amplifier applications.

Compared with TCA0372DWG and LM12CL, the L2720W13TR uniquely combines dual-channel integration, 1 A per channel output, thermal shutdown, and SO16 (Wide) surface-mount compatibility - making it optimal for space-constrained industrial motion control where reliability and layout simplicity are prioritized.

Availability

L2720W13TR is available at Aetrix Electronics and suitable for industrial servo amplifiers, DC motor drive stages, programmable linear power supplies, and inductive load drivers requiring stable component supply across extended temperature ranges (−40 °C to +125 °C).

Supply support for L2720W13TR 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 ICs, analog components, and MEMS sensors for industrial, automotive, and consumer markets.

The L2720W13TR belongs to ST's power operational amplifier product line, engineered specifically for high-current analog output stages in motion control, power conversion, and precision actuation systems where robustness and thermal resilience are mandatory.

FAQ

What is the maximum safe operating temperature for L2720W13TR?

The L2720W13TR has a maximum junction temperature of 150 °C and incorporates thermal shutdown that activates near this threshold. Ambient operation is rated from −40 °C to +125 °C. For sustained 1 A output, PCB copper area under pins 4/5/12/13 and airflow must maintain junction temperature below 150 °C - typical derating begins above 100 °C ambient.

Can L2720W13TR operate from a single 5 V supply?

Yes - the L2720W13TR supports single-supply operation from 4 V minimum. With VS = 5 V and VEE/GND = 0 V, inputs accept signals from 0 V to 5 V, and outputs swing within ~0.5 V of each rail. However, output current capability drops at low supply voltages; full 1 A is specified at VS ≥ 12 V.

Are the NC pins on L2720W13TR electrically isolated or internally tied?

All NC pins (3, 6, 11, 14, 15) are confirmed as no internal connection - they are unbonded and electrically floating. ST's mechanical drawing and pin description table explicitly state "No internal connection." These pins must remain unconnected and unsoldered to avoid mechanical stress or unintended coupling.

Does L2720W13TR require external compensation for unity-gain stability?

No - the L2720W13TR is unity-gain stable per datasheet characterization. Stability testing shows ≥65° phase margin with 2 kΩ load and 100 pF capacitive load. For loads exceeding 100 pF or highly reactive inductive loads, a small series resistor (≤10 Ω) at the output is recommended to isolate capacitance and preserve phase margin.