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Diodes Incorporated AP1501A-T5RG-U
- Part No.:
- AP1501A-T5RG-U
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
AP1501A-T5RG-U.pdf
- Description:
- IC REG BUCK 3A TO220-5R
- Quantity:
- Payment:
- Shipping:
Inventory:1,904
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Product details
Overview
AP1501A-T5RG-U from Diodes Incorporated is a monolithic 150kHz, 5A non-synchronous PWM buck DC/DC converter with integrated high-side switch, fixed 12V output, TO220-5 (R) package, thermal shutdown, and current-limit protection. It operates from 4.5V to 40V input and delivers ±4% output voltage accuracy under full load and temperature range.
For engineers reviewing the AP1501A-T5RG-U datasheet, AP1501A-T5RG-U pinout, AP1501A-T5RG-U application, or AP1501A-T5RG-U equivalent, key selection criteria include its 12V fixed output, 5A continuous load capability, 150kHz switching frequency for compact filter design, ON/OFF logic-controlled shutdown, and thermal performance in TO220-5 (R) with heatsink support.
Technical Context
The AP1501A-T5RG-U implements voltage-mode PWM control with an internal 1.23V reference and error amplifier, enabling stable regulation without external compensation components. Its oscillator runs at 150kHz ±15%, and the built-in 5A N-channel MOSFET switch features 1.5V typical saturation voltage at full load.
Feedback is sensed via the FB pin referenced to the internal 1.23V bandgap; for the fixed 12V variant, FB is internally connected to set VOUT = 12V. Shutdown is asserted by pulling the SD pin above 2.0V, reducing quiescent current to 150–250µA while maintaining VIN operation up to 40V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12V ±4% over full operating temperature and load range |
| Switching Frequency | 150kHz ±15%; enables use of smaller inductors and output capacitors |
| Max Output Current | 5A continuous; supported by integrated MOSFET with 1.5V typical VDS(sat) |
| Input Voltage Range | 4.5V to 40V; accommodates wide industrial and automotive supply rails |
| Efficiency | 88% typical at VIN = 16V, ILOAD = 5A, VOUT = 12V |
| Thermal Protection | Internal thermal shutdown activates above +125°C junction temperature |
| Shutdown Quiescent Current | 150–250µA at VIN = 40V, SD = 5V; enables low-power standby mode |
Pinout & Package
AP1501A-T5RG-U is housed in a TO220-5 (R) package with exposed metal tab electrically connected to GND for thermal dissipation and mechanical mounting. A heatsink is required under typical 5A load conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Positive input supply | Accepts 4.5–40V DC; requires local bypass capacitor for transient suppression |
| 2 Output | Switching node | Drives external inductor; swings between VIN–VDS(sat) and ~–0.5V during freewheeling |
| 3 GND | Power and signal ground | Common return path; metal tab is internally tied to this pin |
| 4 FB | Feedback input | Internally connected to set 12V output; not user-accessible on fixed-voltage variants |
| 5 SD | Shutdown control | Logic-level input: <1.3V = ON, >2.0V = OFF; sinks ≤25µA when active |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5A power switch | Eliminates need for external MOSFET, reducing BOM count and PCB area |
| Internal compensation network | Enables stable regulation without external RC networks or loop tuning |
| Fixed 12V output version | Guaranteed ±4% accuracy across –20°C to +85°C ambient and 0.2–5A load |
| ON/OFF logic shutdown | Reduces system standby power to <0.3mW at 40V input |
| Thermal and current limiting | Prevents damage during overload or elevated ambient; no external sensing required |
Applications
| Industrial Power Supply | Automotive Body Control Module |
|---|---|
Use Scenario: 24V vehicle battery stepped down to stable 12V rail for microcontroller and sensor subsystems. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering regulated 12V at up to 5A. Use Value: High efficiency (88%) minimizes heat generation in confined enclosures; thermal shutdown protects against engine bay temperature excursions. | Use Scenario: On-board 12V distribution for door modules, lighting drivers, and CAN transceivers. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter providing clean, ripple-controlled 12V supply. Use Value: ±4% output tolerance ensures reliable operation of 12V-rated peripherals; 40V max input withstands load-dump transients. |
| Point-of-Load Converter | Legacy Equipment Retrofit |
Use Scenario: Local 12V regulation near FPGA or DSP core logic requiring low-noise, high-current supply. IC Role / Device Role / Timing Role: Compact step-down regulator mounted adjacent to load to minimize IR drop and noise coupling. Use Value: TO220-5 (R) package allows direct heatsink attachment; 150kHz switching balances EMI and component size. | Use Scenario: Replacement for obsolete linear regulators (e.g., 7812) in aging industrial controllers. IC Role / Device Role / Timing Role: Drop-in switching upgrade delivering same 12V output with higher efficiency and lower thermal load. Use Value: 5A capability supports legacy 12V loads previously limited by linear regulator thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2576HVS-12 | 5A, 52kHz fixed-frequency, requires external diode and compensation; wider input (4–60V) | Larger inductor needed due to lower frequency; less efficient at light loads | Preferred where input exceeds 40V or extended temp range (–40°C to +125°C) is required |
| MP1584EN-LF-Z | 3A, 1.5MHz adjustable/fixed, integrated diode, smaller footprint (SOIC-8) | Lower current rating; unsuitable for sustained 5A loads without derating | Selected when board space is constrained and peak load ≤3A; higher frequency reduces passive size |
Compared with LM2576HVS-12 and MP1584EN-LF-Z, the AP1501A-T5RG-U uniquely combines 5A capability, fixed 12V output, and TO220-5 (R) thermal robustness - making it optimal for cost-sensitive, thermally demanding 12V industrial supplies where 150kHz filtering is acceptable.
Availability
AP1501A-T5RG-U is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, point-of-load converters, and legacy equipment retrofits requiring stable component supply and long-term manufacturability planning.
Supply support for AP1501A-T5RG-U 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.
The AP1501A series belongs to Diodes' high-current DC/DC converter product line, designed specifically for cost-effective, thermally robust step-down regulation in space-constrained industrial and automotive applications where simplicity and reliability are prioritized over programmability.
FAQ
What is the maximum recommended input voltage for AP1501A-T5RG-U?
The absolute maximum VIN rating is +45V, but the recommended operating range is 4.5V to 40V per the datasheet. Operation at 40V is validated for full load and temperature range; exceeding 40V risks permanent damage even briefly, as thermal and electrical stress margins diminish rapidly above this limit.
Does AP1501A-T5RG-U require external compensation components?
No. The AP1501A-T5RG-U integrates full frequency compensation circuitry, eliminating the need for external RC networks on the feedback loop. This simplifies layout, improves stability across line/load/temperature, and reduces bill-of-materials cost compared to controllers requiring external compensation.
Can the AP1501A-T5RG-U be used in adjustable-output configurations?
No. AP1501A-T5RG-U is the fixed 12V output variant; its FB pin is internally connected to set VOUT = 12V and is not accessible for external resistor programming. For adjustable operation, select AP1501A-T5G-U (TO220-5) or AP1501A-K5G-13 (TO263-5), both marked "ADJ" in ordering codes.
Is a heatsink mandatory for AP1501A-T5RG-U at 5A load?
Yes. The TO220-5 (R) package has θJA ≈ 31°C/W; at 5A and 12V output from 24V input, power dissipation exceeds 6W, causing junction temperature rise >180°C without heatsinking. A properly sized heatsink is required to maintain TJ ≤ 125°C under worst-case ambient and airflow conditions.
AP1501A-T5RG-U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- TO-220-5 Formed Leads
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5R
AP1501A-T5RG-U FAQ
1.How can I place an order for AP1501A-T5RG-U through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1501A-T5RG-U 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 AP1501A-T5RG-U reliable?
The price and inventory of AP1501A-T5RG-U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1501A-T5RG-U is usually 5 days.
3.What payment methods are accepted for AP1501A-T5RG-U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1501A-T5RG-U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1501A-T5RG-U?
AP1501A-T5RG-U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1501A-T5RG-U 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 AP1501A-T5RG-U?
For technical support, including AP1501A-T5RG-U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1501A-T5RG-U requirements.
6.How does Aetrix verify that AP1501A-T5RG-U is sourced from the original manufacturer or authorized distributors?
All AP1501A-T5RG-U 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 AP1501A-T5RG-U meets industry standards.
7.What is the process for return or replacement of AP1501A-T5RG-U?
All AP1501A-T5RG-U units undergo pre-shipment inspection (PSI). If there is an issue with AP1501A-T5RG-U, 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 AP1501A-T5RG-U part is unused and in its original packaging.
Return procedure for AP1501A-T5RG-U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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