My Inquiry
My Account
STMicroelectronics L2720D
- Part No.:
- L2720D
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
L2720D.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,981
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
L2720D from STMicroelectronics is a dual low-drop power operational amplifier in SO-16 narrow package, designed as a high-current output stage for servo amplifiers and linear power supplies. It delivers 1 A continuous output current, operates from single (4–28 V) or split (±2–±14 V) supplies, features ground-compatible inputs, thermal shutdown at 145 °C, and supports inductive load driving in CD players, VCRs, and automotive actuators.
For engineers reviewing the L2720D datasheet, L2720D pinout, L2720D application, or L2720D equivalent, key selection criteria include output current capability (1 A), low saturation voltage (0.3–1.5 V), dual-channel isolation (60 dB channel separation), thermal shutdown behavior, and SO-16 narrow footprint compatibility with legacy board layouts.
Technical Context
The L2720D integrates two independent high-power op-amp sections on a monolithic die, each with rail-to-rail input stage compatible with ground-referenced signals and capable of sourcing/sinking up to 1 A. Its architecture includes internal clamp diodes, thermal shutdown circuitry, and optimized biasing for stable operation across ±2.5 V to ±12 V split supplies or 4–28 V single supply.
It exhibits 1.2 MHz gain-bandwidth product, 2 V/µs slew rate, and 66–84 dB common-mode rejection at 1 kHz-enabling precise error amplification in closed-loop power regulation and motor current control where wide dynamic range and DC accuracy are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1 A continuous per channel - drives solenoids, small DC motors, and power transistors without external boost stages. |
| Supply Voltage Range | Single: 4–28 V; Split: ±2–±14 V - supports battery-powered and industrial line-powered systems. |
| Input Offset Voltage | 10 mV max - enables accurate DC-coupled feedback in precision power regulation loops. |
| Saturation Voltage | 0.3–1.5 V (low-side/high-side) - minimizes conduction loss and heat generation under full load. |
| Thermal Shutdown | Triggers at 145 °C junction temperature - protects device and load during overload or poor heatsinking. |
| Channel Separation | 60 dB at 1 kHz - ensures minimal crosstalk between dual channels in stereo audio or dual-axis motion control. |
| Gain-Bandwidth Product | 1.2 MHz - supports stable compensation in 20–50 kHz switching regulator error amplifiers. |
Pinout & Package
Package: SO-16 narrow (3.9 mm width), JEDEC MS-012AC compliant, with 1.27 mm pitch and 8° maximum lead angle.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | Output A / Output B | High-current push-pull outputs capable of ±1 A sourcing/sinking into resistive or inductive loads. |
| 2, 15 | Inverting Input A / B | Differential inputs with ground-compatible common-mode range (down to V−). |
| 3, 14 | Non-inverting Input A / B | DC-coupled inputs accepting signals referenced to ground or negative rail. |
| 4, 13 | V− Supply | Negative supply pin shared by both amplifiers; must be decoupled locally. |
| 5, 12 | V+ Supply | Positive supply pin shared by both amplifiers; accepts up to 28 V (single) or ±14 V (split). |
| 6, 11 | Compensation A / B | External compensation pins for stability tuning via capacitor-resistor networks. |
| 7, 10 | Shutdown A / B | Logic-level enable/disable inputs (active-high); pull low to disable output stage and reduce quiescent current. |
| 8, 9 | NC | No-connect pins - left unconnected per manufacturer recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-compatible inputs | Enables direct interfacing with microcontroller DACs or sensor outputs without level-shifting circuitry. |
| Internal clamp diodes | Protects inputs from transient overvoltage during inductive kickback in motor drive applications. |
| Low saturation voltage | Reduces power dissipation at full load: <1.5 V drop at 500 mA ensures >90% efficiency in 5 V systems. |
| Thermal shutdown | Self-resetting protection that disables output until junction cools below ~135 °C, preventing latch-up. |
| Dual independent channels | Allows simultaneous control of two axes (e.g., X/Y stepper drivers) or redundant error amplification paths. |
Applications
| CD Player Servo Control | VCR Head Positioning |
|---|---|
Use Scenario: Precise tracking and focus actuator control in optical disc mechanisms requiring fast settling and low-distortion current drive. IC Role / Device Role / Timing Role: Dual-channel power op-amp serving as position error amplifier and coil driver interface. Use Value: 1 A output current and 2 V/µs slew rate enable sub-millisecond step response with minimal overshoot in voice-coil actuators. | Use Scenario: Linear tape head positioning and drum motor speed regulation in analog video recorders. IC Role / Device Role / Timing Role: High-current buffer and feedback amplifier for analog servo loops controlling capstan and pinch roller motors. Use Value: Ground-compatible inputs accept direct DAC output; low offset (10 mV) maintains tracking accuracy across temperature. |
| Automotive HVAC Actuators | Industrial Linear Power Supplies |
Use Scenario: Driving bi-directional DC motors in climate control blend doors and air flap actuators within vehicle cabins. IC Role / Device Role / Timing Role: Dual H-bridge pre-driver providing complementary PWM-amplified current to motor windings. Use Value: Thermal shutdown (145 °C) ensures safe operation in confined, high-ambient environments like dashboard enclosures. | Use Scenario: Adjustable bench power supply output stage delivering 0–24 V / 0–1 A with analog voltage/current limiting. IC Role / Device Role / Timing Role: Pass element driver and current-sense amplifier in series-regulated topology. Use Value: Low saturation voltage (0.3 V min) reduces dropout and improves regulation margin at low output voltages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-current power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCA0372D | Lower output current (1.5 A peak, 0.8 A continuous); no thermal shutdown; SO-16 wide package. | Lacks integrated thermal protection; requires external overtemperature sensing for safety-critical loads. | Choose when cost sensitivity outweighs need for self-protecting operation and board space allows wider SO-16. |
| LM12CL | Higher output current (1.5 A continuous); TO-126 package; no dual-channel integration. | Requires two separate devices for dual-axis use; larger thermal footprint and no channel separation spec. | Prefer for single-channel, higher-power (>1 A continuous) applications where PCB area and thermal mass permit discrete packaging. |
Compared with TCA0372D and LM12CL, the L2720D uniquely combines dual-channel integration, built-in thermal shutdown, and SO-16 narrow footprint-making it optimal for space-constrained, safety-aware servo and power supply designs where channel isolation and autonomous fault protection are required.
Availability
L2720D is available at Aetrix Electronics and suitable for CD player servo control, VCR head positioning, and automotive HVAC actuator systems requiring stable component supply and long-term obsolescence management support.
Supply support for L2720D 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, specializing in power management, analog, microcontrollers, and automotive-grade ICs.
The L2720D belongs to ST's legacy power op-amp product line, engineered specifically for high-fidelity analog power stages in consumer audio/video and electromechanical control systems.
FAQ
What is the maximum safe operating supply voltage for L2720D?
The absolute maximum continuous supply voltage is 28 V for single-supply operation or ±14 V for split-supply use. Peak supply voltage may reach 50 V for durations ≤50 ms, but sustained operation above rated limits risks permanent damage due to junction overheating or oxide breakdown.
Does L2720D require external compensation components?
Yes - pins 6 and 11 are dedicated external compensation terminals. A series RC network (typically 10–100 pF capacitor with 1–10 kΩ resistor) must be connected between each compensation pin and its respective output to ensure stability under varying load conditions and gain configurations.
Can L2720D drive inductive loads directly without flyback diodes?
No - although internal clamp diodes protect the inputs, the outputs lack integrated flyback protection. External fast-recovery diodes (e.g., 1N5819) must be placed across inductive loads to suppress back-EMF and prevent output stage destruction during turn-off transitions.
Is L2720D still in active production?
No - STMicroelectronics has marked L2720D as obsolete. However, Aetrix Electronics maintains verified legacy stock with full traceability, and offers engineering support for form-fit-function replacement evaluation using currently active alternatives such as TSV912 or TSZ121.
L2720D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 10 mV
- Current - Supply:
- 10mA
- Current - Output / Channel:
- 1.5 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
L2720D FAQ
1.How can I place an order for L2720D through Aetrix?
Please submit a Request for Quotation (RFQ) for L2720D 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 L2720D reliable?
The price and inventory of L2720D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L2720D is usually 5 days.
3.What payment methods are accepted for L2720D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L2720D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L2720D?
L2720D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L2720D 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 L2720D?
For technical support, including L2720D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L2720D requirements.
6.How does Aetrix verify that L2720D is sourced from the original manufacturer or authorized distributors?
All L2720D 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 L2720D meets industry standards.
7.What is the process for return or replacement of L2720D?
All L2720D units undergo pre-shipment inspection (PSI). If there is an issue with L2720D, 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 L2720D part is unused and in its original packaging.
Return procedure for L2720D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
L2720D Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
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…
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, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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.
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.
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…
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…
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…
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 …
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…
