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onsemi MC7824BD2TR4
- Part No.:
- MC7824BD2TR4
- Manufacturer:
- onsemi
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MC7824BD2TR4.pdf
- Description:
- IC REG LINEAR 24V 1A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,687
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Product details
Overview
MC7824BD2TR4 from onsemi is a fixed-output +24 V, 1.0 A linear voltage regulator in D2PAK-3 (TO-263) package with internal thermal shutdown, short-circuit current limiting, and safe-area compensation. It delivers stable DC power for industrial control logic, automotive body electronics, and embedded system rails where input voltage ranges from 27 V to 38 V DC.
For engineers reviewing the MC7824BD2TR4 datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed ±2% output tolerance at 25°C, 2.0 V dropout at 1.0 A, 54 dB ripple rejection at 120 Hz, and compatibility with standard heat-sinked PCB layouts using its exposed tab (Pin 2).
Technical Context
This monolithic IC uses a bipolar pass transistor with built-in safe-area compensation to maintain reliability under high VIN–VOUT differentials. Its thermal shutdown activates at +150°C junction temperature, and short-circuit protection limits peak current to 0.2 A at 35 V input.
The device operates without external components for basic regulation but requires ≥0.33 µF input bypass capacitance when located remotely from bulk filtering. Output noise is 10 µV/V RMS (10 Hz–100 kHz), and load regulation holds within 2.1 mV over 5 mA–1.5 A at TJ = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +24 V nominal, ±2% tolerance at 25°C - ensures compatible logic supply for 24 V industrial I/O modules |
| Output Current | 1.0 A continuous - supports mid-power analog front-ends and microcontroller peripherals |
| Dropout Voltage | 2.0 V at 1.0 A - mandates minimum 26 V input for full-load 24 V output |
| Ripple Rejection | 54 dB at 120 Hz - suppresses rectified AC line noise in unregulated DC bus applications |
| Quiescent Current | 3.6 mA typical - enables low-standby-power designs without auxiliary LDOs |
| Thermal Shutdown | Activates at +150°C junction - protects against sustained overload or inadequate heatsinking |
| Short-Circuit Limit | 0.2 A at 35 V input - prevents catastrophic failure during wiring faults |
Pinout & Package
D2PAK-3 (TO-263) surface-mount package with exposed metal tab thermally and electrically connected to Pin 2 (Ground). Requires solder pad thermal relief and mechanical mounting for heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input | Accepts 27–38 V DC input; must be bypassed with ≥0.33 µF capacitor near pin |
| 2 | Ground | Common reference for input/output; tab connection enables direct PCB heatsinking |
| 3 | Output | Delivers regulated +24 V; no output capacitor required for stability, but improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +24 V output | Eliminates external resistor network, reducing BOM count and layout complexity |
| Internal thermal shutdown | Enables self-protecting operation in sealed enclosures without external thermal sensors |
| Safe-area compensated pass transistor | Maintains SOA compliance across full input/output differential range up to 35 V |
| No external components required | Reduces footprint and qualification effort for cost-sensitive industrial control boards |
| Pb-free and RoHS-compliant | Meets EU environmental directives and automotive PPAP requirements |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Powering isolated digital input circuits and relay drivers in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary 24 V rail regulator supplying field-side logic and optocoupler biasing. Use Value: ±2% output tolerance ensures reliable TTL/CMOS level detection across temperature; 1.0 A capacity supports multiple parallel outputs. |
Use Scenario: Regulating 24 V supply for door module microcontrollers and window motor drivers. IC Role / Device Role / Timing Role: Local point-of-load regulator downstream of vehicle battery and main DC/DC converter. Use Value: Thermal shutdown prevents latch-up during hot-car battery disconnect events; D2PAK package allows direct chassis heatsinking. |
| Embedded Sensor Signal Conditioning | Test Equipment Power Rails |
Use Scenario: Providing clean 24 V bias for precision strain-gauge amplifiers and 4–20 mA transmitter circuits. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from noisy digital domains. Use Value: 10 µV/V output noise and 54 dB ripple rejection preserve signal integrity in 16-bit measurement systems. |
Use Scenario: Generating stable 24 V for benchtop instrument fan controllers and display backlight drivers. IC Role / Device Role / Timing Role: Secondary regulated rail derived from lab-grade bench power supply. Use Value: 2.1 mV load regulation ensures consistent fan speed and LED brightness across varying loads. |
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 (vs. ±2% for MC7824BD2TR4); higher quiescent current (4.5 mA typ) | Suitable for non-critical 24 V logic rails where tighter regulation is not required | Prefer MC7824BD2TR4 for industrial environments demanding tighter initial accuracy and lower thermal drift |
| NCV7824BD2TR4 | AEC-Q100 qualified; identical electrical specs but with automotive-specific process controls and PPAP documentation | Required for OEM automotive production; not necessary for industrial or commercial use | Select NCV7824BD2TR4 only when automotive qualification and traceability are mandatory |
Compared with LM7824CD2T, MC7824BD2TR4 offers tighter output tolerance and lower quiescent current for improved efficiency and accuracy; compared with NCV7824BD2TR4, it provides identical performance at lower cost where automotive qualification is unnecessary.
Availability
MC7824BD2TR4 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body electronics, and embedded sensor systems requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for MC7824BD2TR4 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
onsemi is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The MC7800 series was designed as a robust, drop-in replacement for legacy 78xx regulators, targeting cost-sensitive industrial and automotive systems needing proven reliability, integrated protection, and wide-input-voltage operation.
FAQ
What is the maximum input voltage rating for MC7824BD2TR4?
The absolute maximum input voltage for MC7824BD2TR4 is 40 V DC, as specified in the Absolute Maximum Ratings table. Continuous operation above 38 V violates the recommended operating condition and risks thermal runaway or premature failure due to excessive power dissipation in the pass transistor.
Does MC7824BD2TR4 require an output capacitor for stability?
No, MC7824BD2TR4 does not require an output capacitor for stability per the datasheet. However, adding a 0.1 µF ceramic capacitor at the output improves transient response during step-load changes, especially in systems with long PCB traces between the regulator and load.
Can MC7824BD2TR4 be used in adjustable configurations?
Yes, MC7824BD2TR4 can be configured as an adjustable regulator using external resistors and a Zener diode per Figure 10 in the datasheet, though this modifies its fixed +24 V behavior and introduces additional tolerance and temperature drift from external components.
What thermal resistance values apply to MC7824BD2TR4 in D2PAK-3 package?
MC7824BD2TR4 in D2PAK-3 has RθJC = 5.0°C/W (junction-to-case) and RθJA = 65°C/W (junction-to-ambient) with standard JEDEC 2S2P copper pad layout. Effective thermal performance depends on PCB copper area, via count, and heatsink attachment to the exposed tab (Pin 2).
Is MC7824BD2TR4 pin-compatible with other 78xx-series regulators in D2PAK-3?
Yes, MC7824BD2TR4 shares identical D2PAK-3 pinout (Input-Ground-Output) and mechanical footprint with all onsemi 78xx-series D2T-suffix parts, enabling board-level substitution across output voltages when thermal and electrical margins permit.
MC7824BD2TR4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- 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:
- 1A
- Current - Quiescent (Iq):
- 8 mA
- Current - Supply (Max):
- -
- PSRR:
- 61dB (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-3
MC7824BD2TR4 FAQ
1.How can I place an order for MC7824BD2TR4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7824BD2TR4 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 MC7824BD2TR4 reliable?
The price and inventory of MC7824BD2TR4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7824BD2TR4 is usually 5 days.
3.What payment methods are accepted for MC7824BD2TR4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7824BD2TR4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7824BD2TR4?
MC7824BD2TR4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7824BD2TR4 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 MC7824BD2TR4?
For technical support, including MC7824BD2TR4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7824BD2TR4 requirements.
6.How does Aetrix verify that MC7824BD2TR4 is sourced from the original manufacturer or authorized distributors?
All MC7824BD2TR4 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 MC7824BD2TR4 meets industry standards.
7.What is the process for return or replacement of MC7824BD2TR4?
All MC7824BD2TR4 units undergo pre-shipment inspection (PSI). If there is an issue with MC7824BD2TR4, 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 MC7824BD2TR4 part is unused and in its original packaging.
Return procedure for MC7824BD2TR4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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