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STMicroelectronics L7824ABD2T-TR
- Part No.:
- L7824ABD2T-TR
- Manufacturer:
- STMicroelectronics
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
L7824ABD2T-TR.pdf
- Description:
- IC REG LINEAR 24V 1.5A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
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Product details
Overview
L7824ABD2T-TR from STMicroelectronics is a three-terminal positive linear voltage regulator delivering a fixed 24 V output with up to 1.5 A continuous current, thermal overload and short-circuit protection, ±2 % output voltage tolerance (A version), and guaranteed operation from –40 °C to +125 °C junction temperature - used for stable local regulation in industrial power supplies and embedded control systems.
For engineers reviewing the L7824ABD2T-TR datasheet, L7824ABD2T-TR pinout, L7824ABD2T-TR application, or L7824ABD2T-TR equivalent, key selection criteria include dropout voltage (2 V at 1 A), load regulation (≤100 mV over 5 mA–1 A), supply voltage rejection (54 dB at 120 Hz), thermal resistance (RthJC = 3 °C/W in D²PAK), and extended-temperature qualification for harsh-environment deployment.
Technical Context
This IC implements a monolithic series-pass linear regulator architecture with internal current limiting, safe-area protection, and thermal shutdown circuitry - enabling robust operation without external protection components. Its fixed-output design eliminates need for feedback resistors while maintaining tight DC accuracy across load and line variations.
It operates with a minimum input-to-output differential of 2 V (dropout) and requires only two external capacitors (0.33 µF input, 0.1 µF output) for stability. The device embeds no switching elements, delivering low-noise regulated DC (10 µV/V RMS noise, 10 Hz–100 kHz) suitable for analog-sensitive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 24 V ±2 % (guaranteed over –40 °C to +125 °C junction temp) |
| Max Output Current | 1.5 A continuous (internally limited; requires heatsink above ~0.5 A in D²PAK) |
| Dropout Voltage | 2 V at 1 A load and 25 °C - defines minimum input voltage (≥26 V) for regulation |
| Line Regulation | ≤240 mV over VI = 27–38 V (specifies sensitivity to input ripple/noise) |
| Load Regulation | ≤100 mV from 5 mA to 1 A (ensures stable rail under dynamic load steps) |
| Supply Rejection | 54 dB at 120 Hz (attenuates rectified AC ripple entering via input) |
| Output Noise | 10 µV/V RMS (10 Hz–100 kHz) - supports low-noise analog circuitry |
| Thermal Resistance | RthJC = 3 °C/W (D²PAK package) - enables high-power dissipation with minimal case rise |
Pinout & Package
D²PAK (TO-263) surface-mount package with exposed thermal pad; thermally optimized for PCB copper pour heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Input) | VIN | Unregulated DC input (max 40 V); must be ≥26 V for 24 V output regulation |
| 2 (Ground) | GND | Reference node for output and internal bias; connects to system ground plane |
| 3 (Output) | VOUT | Stable 24 V regulated output; decoupled with 0.1 µF ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Extended Temperature Range | –40 °C to +125 °C operating junction temperature - qualified for industrial and automotive under-hood environments |
| Output Voltage Tolerance | ±2 % at 25 °C - reduces need for post-regulation trimming in precision 24 V systems |
| Integrated Protection | Thermal shutdown, short-circuit current limit (0.2 A steady-state), and safe-operating-area (SOA) control - eliminates discrete protection circuitry |
| Low Quiescent Current | 4.6–6 mA typical - minimizes standby power loss in always-on 24 V auxiliary rails |
| Capacitor-Free Stability | Stable with 0.33 µF input / 0.1 µF output ceramics - simplifies layout and lowers BOM count |
Applications
| Industrial PLC Power Rails | Automotive Body Control Modules |
|---|---|
Use Scenario: Providing isolated 24 V logic and sensor power within programmable logic controller backplanes. IC Role / Device Role / Timing Role: Local point-of-load regulator replacing centralized 24 V distribution to reduce IR drop and noise coupling. Use Value: Maintains ±2 % output accuracy across –25 °C to +70 °C ambient with <100 mV load regulation during solenoid actuation transients. |
Use Scenario: Supplying microcontroller, CAN transceiver, and window motor driver circuits in vehicle door modules. IC Role / Device Role / Timing Role: Primary 24 V regulator downstream of vehicle battery (with transient suppression). Use Value: Withstands –40 °C cold cranking and 125 °C under-dash thermal stress while delivering 1.2 A continuously to mixed digital/analog loads. |
| Test Equipment Power Supplies | Factory Automation Sensors |
Use Scenario: Generating clean 24 V reference for calibration-grade multimeters and signal generators. IC Role / Device Role / Timing Role: Low-noise post-regulator after bulk DC/DC conversion. Use Value: 10 µV/V RMS output noise and 54 dB ripple rejection ensure measurement integrity in sub-mV resolution instruments. |
Use Scenario: Powering industrial photoelectric sensors, proximity switches, and IO-Link devices on factory floors. IC Role / Device Role / Timing Role: Robust local regulator tolerant of 40 V load-dump transients and ESD events. Use Value: Internal short-circuit and thermal protection enable maintenance-free operation in unattended 24 V fieldbus nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7824CD2T | ±4 % output tolerance, 0 to +125 °C range, RthJC = 5 °C/W (D²PAK), higher quiescent current (8 mA) | Lacks extended temperature rating; less suitable for cold-weather outdoor equipment | Select when cost sensitivity outweighs precision and wide-temp requirements |
| MC7824BD2TG | ±2 % tolerance, –40 to +125 °C, but RthJC = 4.5 °C/W and lower short-circuit current (0.15 A) | Slightly reduced thermal performance and fault-current margin vs. L7824ABD2T-TR | Prefer where ON Semiconductor's qualification history aligns with legacy designs |
Compared with LM7824CD2T and MC7824BD2TG, the L7824ABD2T-TR offers superior thermal efficiency (3 °C/W), tighter initial tolerance, and higher short-circuit peak current (2.2 A), making it optimal for high-reliability, thermally constrained 24 V systems requiring long-term stability.
Availability
L7824ABD2T-TR is available at Aetrix Electronics and suitable for industrial PLC power rails, automotive body control modules, test equipment power supplies, and factory automation sensors requiring stable component supply and extended-temperature assurance.
Supply support for L7824ABD2T-TR 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, specializing in power management, microcontrollers, and automotive ICs with broad industrial and automotive qualification portfolios.
The L78 series is ST's flagship family of fixed-output linear regulators designed for rugged, cost-effective local voltage regulation in industrial controls, automotive subsystems, and instrumentation where simplicity, reliability, and thermal resilience are critical.
FAQ
What is the minimum input voltage required for regulation with L7824ABD2T-TR?
The minimum input voltage is 26 V DC, derived from the 24 V nominal output plus the 2 V dropout voltage specified at 1 A and 25 °C. At higher junction temperatures or full 1.5 A load, derating is required - consult thermal data and Figure 4 in DS0422 to ensure sufficient headroom for safe operation.
Can L7824ABD2T-TR be used without input/output capacitors?
No - the datasheet mandates a 0.33 µF input capacitor (tantalum or ceramic) and 0.1 µF output capacitor (ceramic) for stability across all operating conditions. Omitting either risks oscillation, poor transient response, or thermal runaway under load step changes.
How does the thermal protection behave during overload?
When junction temperature exceeds ~165 °C, the IC initiates thermal shutdown, reducing output current to near zero until die temperature falls by ~10 °C. Recovery is automatic and does not require power cycle - this protects against sustained short circuits or inadequate heatsinking without latch-up.
Is L7824ABD2T-TR compatible with lead-free reflow soldering profiles?
Yes - the D²PAK package is rated for standard Pb-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C for 30 seconds. The device's plastic body and internal construction meet RoHS and REACH compliance requirements without special handling.
L7824ABD2T-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 24V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 54dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
L7824ABD2T-TR FAQ
1.How can I place an order for L7824ABD2T-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for L7824ABD2T-TR 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 L7824ABD2T-TR reliable?
The price and inventory of L7824ABD2T-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L7824ABD2T-TR is usually 5 days.
3.What payment methods are accepted for L7824ABD2T-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L7824ABD2T-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L7824ABD2T-TR?
L7824ABD2T-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L7824ABD2T-TR 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 L7824ABD2T-TR?
For technical support, including L7824ABD2T-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L7824ABD2T-TR requirements.
6.How does Aetrix verify that L7824ABD2T-TR is sourced from the original manufacturer or authorized distributors?
All L7824ABD2T-TR 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 L7824ABD2T-TR meets industry standards.
7.What is the process for return or replacement of L7824ABD2T-TR?
All L7824ABD2T-TR units undergo pre-shipment inspection (PSI). If there is an issue with L7824ABD2T-TR, 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 L7824ABD2T-TR part is unused and in its original packaging.
Return procedure for L7824ABD2T-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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