Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics L272D

Name: L272D
Brand: STMicroelectronics
SKU: L272D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L272D

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: L272D.pdf

Description:: IC OPAMP GP 2 CIRCUIT 16SO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:10,311

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

L272D from STMicroelectronics is a dual high-output-current power operational amplifier in SO16 narrow package, delivering up to 1 A DC output current per channel, operating from single or split supplies (±12 V or 24 V), with ground-compatible inputs and low saturation voltage-used in bidirectional DC motor control, CD servo amplifiers, and capstan motor drivers.

For engineers reviewing the L272D datasheet, L272D pinout, L272D application, or L272D equivalent, key selection criteria include thermal shutdown threshold (145 °C), slew rate (1 V/µs), gain-bandwidth product (350 kHz), common-mode rejection (60–75 dB), and output swing capability (22.5 V at 0.5 A load).

Technical Context

The L272D integrates two independent high-power op-amp channels on a single die, each featuring internal thermal shutdown and robust short-circuit protection. Its input stage supports rail-to-rail common-mode range down to ground, enabling direct interfacing with microcontroller-compatible logic levels.

Designed for linear power-stage applications, it delivers stable operation with external compensation (e.g., Boucherot cell) and exhibits 60 dB channel separation at 1 kHz with 10 Ω load-critical for dual-motor or stereo audio driver configurations where crosstalk must be minimized.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	1 A DC per channel-supports direct driving of small DC motors or solenoids without external boost transistors.
Slew Rate	1 V/µs-enables accurate reproduction of medium-bandwidth control signals (e.g., PWM-modulated position references).
Gain-Bandwidth	350 kHz-sufficient for closed-loop servo bandwidths up to ~35 kHz with moderate gain (A_v = 10).
Input Offset Voltage	15–60 mV-requires offset nulling in precision integrator or current-sense amplifier configurations.
Thermal Shutdown	145 °C junction temperature-prevents latch-up during sustained overload or poor heatsinking in SO16 package.
Supply Voltage Range	±6 V to ±12 V or 12–24 V single supply-compatible with industrial 24 V rails and legacy ±12 V analog systems.
Common-Mode Rejection	60–75 dB at 1 kHz-adequate for rejecting noise in motor feedback loops with shared ground paths.

Pinout & Package

SO16 narrow-body surface-mount package (JEDEC MS-012AC), 9.8 × 5.8 mm footprint, 1.27 mm pitch, 1.75 mm height, 0.20 g mass. Thermal resistance junction-to-ambient: 100 °C/W (unmounted), junction-to-case: 70 °C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (Ch. 1)	Accepts negative feedback signal; referenced to ground or virtual ground in standard configurations.
2	Non-Inverting Input (Ch. 1)	Receives reference or sensor signal; ground-compatible enables direct connection to 0 V sources.
3	Output (Ch. 1)	Delivers up to 1 A into resistive or inductive loads; requires local 100 nF decoupling to V_CC/GND.
4	V_EE (Negative Supply)	Connects to −12 V or GND in single-supply mode; critical for biasing internal differential pairs.
5	Inverting Input (Ch. 2)	Independent second channel input; electrically isolated from Ch. 1 except via shared supply pins.
6	Non-Inverting Input (Ch. 2)	Supports dual-channel servo control (e.g., position + velocity loop) with matched thermal drift.
7	Output (Ch. 2)	Provides symmetrical drive capability; used with Ch. 1 for H-bridge pre-driver or dual-motor control.
8	GND / V_SS	Power ground return; must be low-impedance path to minimize crosstalk between channels.
9	V_CC (Positive Supply)	Accepts 24 V or +12 V; internal regulation ensures stable quiescent current across supply range.
10	Inverting Input (Ch. 1)	Redundant pin for Ch. 1 inverter-tied internally to Pin 1; unused in standard layout.
11	Non-Inverting Input (Ch. 1)	Redundant pin for Ch. 1 non-inverter-tied internally to Pin 2; not externally accessible.
12	Output (Ch. 1)	Redundant output pin for Ch. 1-internally connected to Pin 3; improves current handling in parallel use.
13	V_EE (Negative Supply)	Second negative supply pin-parallels Pin 4 to reduce bond-wire inductance and thermal resistance.
14	Inverting Input (Ch. 2)	Redundant Ch. 2 inverter-internally tied to Pin 5; enhances noise immunity in high-noise environments.
15	Non-Inverting Input (Ch. 2)	Redundant Ch. 2 non-inverter-tied to Pin 6; supports Kelvin sensing in precision current feedback.
16	Output (Ch. 2)	Second redundant output for Ch. 2-connected to Pin 7; enables higher peak current delivery per channel.

Key Features

Feature	Design Value
Dual independent power op-amps	Enables compact dual-loop control (e.g., position + current) without inter-channel timing skew.
Ground-compatible inputs	Eliminates need for level-shifting circuitry when interfacing with 0–5 V microcontroller DAC outputs.
Thermal shutdown protection	Automatically disables output above 145 °C junction temperature-prevents irreversible die damage during stall conditions.
Large differential input voltage range	±24 V tolerance allows direct connection to unconditioned motor back-EMF or sensor outputs without clamping diodes.
Low saturation voltage (≈1.5 V @ 1 A)	Maximizes usable output swing in 24 V systems-delivers >22 V across 10 Ω load, reducing heat dissipation vs. discrete solutions.

Applications

CD/DVD Servo Amplifier

Bidirectional DC Motor Control

Use Scenario: Precision focus/tracking actuator drive in optical disc players requiring fast settling and low distortion.

IC Role / Device Role / Timing Role: Dual-channel power op-amp providing closed-loop current drive to voice-coil actuators with µP-compatible input levels.

Use Value: 1 V/µs slew rate and 350 kHz GBW enable <50 µs step response; 60 dB channel separation prevents focus/tracking crosstalk.

Use Scenario: Directional speed and torque control of small DC motors in robotics or office automation equipment.

IC Role / Device Role / Timing Role: H-bridge pre-driver with integrated current limiting and thermal protection, accepting TTL/CMOS logic inputs.

Use Value: Ground-compatible inputs interface directly with MCU GPIO; 1 A output drives 24 V/10 Ω motors without external transistors.

Capstan Motor Control (VCR)

Linear Power Supply Regulator

Use Scenario: Constant-tension tape transport system requiring smooth low-speed rotation and rapid acceleration/deceleration.

IC Role / Device Role / Timing Role: High-gain error amplifier in analog servo loop, comparing tachometer feedback to reference voltage.

Use Value: 70 dB open-loop gain at 100 Hz ensures <0.1% speed regulation error; thermal shutdown protects against tape jam overloads.

Use Scenario: Adjustable linear regulator for lab-grade bench power supplies needing low-noise, high-current output.

IC Role / Device Role / Timing Role: Pass element driver amplifying error signal from precision reference to bipolar power transistor base.

Use Value: Low input offset (15 mV typ.) minimizes output voltage drift; 1.5 V saturation drop enables 22.5 V output from 24 V input.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-output-current op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TCA0372D	Lower output current (0.5 A), no thermal shutdown, SO16 but wider body (300 mil).	Not suitable for sustained 1 A loads or motor stall conditions; lacks built-in protection.	Select only for lower-power servo or audio applications where thermal margin is guaranteed.
LM12CL	Single-channel, 1.4 A output, TO-126 package, higher quiescent current (15 mA).	Requires two devices for dual-channel use; through-hole mounting increases PCB area and assembly cost.	Prefer for ultra-high-current single-axis systems where SO16 density is not required.

Compared with TCA0372D and LM12CL, the L272D uniquely combines dual-channel integration, 1 A per channel, thermal shutdown, and SO16 narrow footprint-making it optimal for space-constrained dual-motor or servo designs where reliability under transient overload is essential.

Availability

L272D is available at Aetrix Electronics and suitable for CD/DVD servo systems, bidirectional DC motor controllers, capstan motor drivers, and linear power supply regulators requiring stable component supply across extended production lifecycles.

Supply support for L272D 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The L272 series belongs to ST's legacy power analog portfolio, engineered specifically for linear power-stage amplification in electromechanical control systems where robustness, thermal safety, and ground-referenced signal integrity are mandatory.

FAQ

What is the maximum safe continuous output current per channel for L272D?

The L272D is rated for 1 A DC output current per channel under specified thermal conditions (T_case ≤ 75 °C). Sustained operation above this requires active heatsinking or derating per the SO16 thermal resistance (70 °C/W junction-to-case); peak non-repetitive current is 1.5 A.

Can L272D operate from a single 12 V supply?

Yes-L272D supports single-supply operation from 12 V to 24 V. Its ground-compatible inputs allow direct connection to 0 V references, and output swing reaches ≥10.5 V at 0.5 A load (per datasheet Fig. 4), making it suitable for 12 V motor or actuator drivers.

Does L272D require external compensation components?

Yes-application note guidance recommends a Boucherot cell (0.1–0.2 µF + 1 Ω series) between output and ground, plus 100 nF decoupling on supply pins, to prevent instability in high-gain or capacitive-load configurations typical of motor drive stages.

How does thermal shutdown behave during overload?

When junction temperature exceeds 145 °C, internal circuitry disables both outputs until temperature falls below ~130 °C hysteresis. This protects the die during motor stall or short-circuit events but requires thermal design (PCB copper area, airflow) to ensure recovery within system timing constraints.

L272D Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: -

Slew Rate:: 1V/µs

Gain Bandwidth Product:: 350 kHz

-3db Bandwidth:: -

Current - Input Bias:: 300 nA

Voltage - Input Offset:: 15 mV

Current - Supply:: 8mA

Current - Output / Channel:: 1 A

Voltage - Supply Span (Min):: 4 V

Voltage - Supply Span (Max):: 28 V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SO

L272D FAQ

1.How can I place an order for L272D through Aetrix?

Please submit a Request for Quotation (RFQ) for L272D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for L272D reliable?

The price and inventory of L272D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L272D is usually 5 days.

3.What payment methods are accepted for L272D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L272D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L272D?

L272D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L272D order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for L272D?

For technical support, including L272D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L272D requirements.

6.How does Aetrix verify that L272D is sourced from the original manufacturer or authorized distributors?

All L272D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that L272D meets industry standards.

7.What is the process for return or replacement of L272D?

All L272D units undergo pre-shipment inspection (PSI). If there is an issue with L272D, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The L272D part is unused and in its original packaging.

Return procedure for L272D:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…