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Diodes Incorporated AP1501-50K5L-13
- Part No.:
- AP1501-50K5L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1501-50K5L-13.pdf
- Description:
- IC REG BUCK 5V 3A TO263-5L
- Quantity:
- Payment:
- Shipping:
Inventory:3,770
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Product details
Overview
AP1501-50K5L-13 from Diodes Incorporated is a fixed 5.0V, 3A non-synchronous PWM buck DC/DC converter in TO263-5L package, operating at 150kHz switching frequency with ±4% output voltage tolerance and integrated thermal shutdown/current limit protection. It delivers regulated 5V output from 7–40V input for industrial power rails and embedded system supplies.
For engineers reviewing the AP1501-50K5L-13 datasheet, AP1501-50K5L-13 pinout, AP1501-50K5L-13 application, or AP1501-50K5L-13 equivalent, this page provides verified functional identity, validated package mapping (TO263-5L), confirmed pin roles (VIN, Output, GND, FB, SD), real-world efficiency data (80% @12VIN/3A), and direct alternative comparisons - all extracted from Diodes Inc. Rev. 11 datasheet.
Technical Context
The AP1501-50K5L-13 implements voltage-mode PWM control with internal 1.23V reference and compensation network, eliminating external loop components. Its fixed 5V output is set internally, removing need for external feedback resistors unlike the adjustable version.
It integrates a 3A N-channel MOSFET switch with 1.4V typical saturation voltage, operates up to 40V input, and features logic-level ON/OFF shutdown (VIL = 0.6V, VIH = 2.0V) enabling microcontroller-controlled power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% (guaranteed across 0.2–3A load and -20°C to +85°C ambient) |
| Switching Frequency | 150kHz ±15% (enables use of compact 47µH inductors and reduces EMI filtering burden) |
| Max Output Current | 3A continuous (limited by internal current sense and thermal design; requires TO263-5L copper area ≥3 in² for full rating) |
| Input Voltage Range | 7V to 40V (supports wide-input industrial and automotive battery-supplied systems) |
| Efficiency | 80% at VIN=12V, IOUT=3A (reduces heat dissipation vs. linear regulators; enables 1.2W max junction rise under nominal conditions) |
| Shutdown Quiescent Current | 250µA max (enables low-power standby mode; critical for battery-backed systems) |
| Thermal Protection | Internal thermal shutdown at TJ ≈150°C (prevents permanent damage during overload or poor heatsinking) |
Pinout & Package
AP1501-50K5L-13 uses the TO263-5L surface-mount package with exposed metal tab electrically connected to GND for thermal conduction. The package requires ≥3 in² of 1oz copper on PCB for rated 3A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Positive input supply | Accepts 7–40V DC; requires local 100µF low-ESR input capacitor to suppress switching transients |
| Output (Pin 2) | Switch node | Drives external catch diode and inductor; high dv/dt node requiring minimized trace area to reduce EMI |
| GND (Pin 3) | Power and signal ground | Common return for internal circuitry, thermal path via metal tab; must connect directly to large copper pour |
| FB (Pin 4) | Feedback input | Internally tied to 5V divider; unused in fixed-output version but must remain unconnected or grounded per datasheet |
| SD (Pin 5) | Shutdown control | Active-low logic input; <0.6V enables regulation, >2.0V disables output and drops IQ to 250µA |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3A power switch | Eliminates external MOSFET and gate driver, reducing BOM count and layout complexity |
| Internal compensation | Enables stable regulation without external RC networks-simplifies design for fixed-output applications |
| Logic-compatible shutdown | Direct interface with 3.3V/5V microcontrollers for power sequencing without level-shifting |
| Lead-free & RoHS-compliant | Meets EU Directive 2002/95/EC; green molding compound (no Br/Sb) supports environmental compliance programs |
| Thermal and current limiting | Prevents catastrophic failure during short-circuit or overtemperature events-no external protection needed |
Applications
| Industrial PLC Power Supply | Automotive Infotainment Core Rail |
|---|---|
Use Scenario: Providing clean 5V rail for programmable logic controller (PLC) I/O modules operating from 24V DC field bus. IC Role / Device Role / Timing Role: Primary step-down regulator converting 24V to 5V for microcontroller, ADC, and digital isolator power domains. Use Value: 80% efficiency minimizes heat in enclosed cabinets; 3A rating supports multiple I/O channels without derating. | Use Scenario: Generating 5V core supply for infotainment head unit SoC and USB peripherals from vehicle 12V battery. IC Role / Device Role / Timing Role: Main DC/DC converter handling cold-crank (6.5V) to load-dump (40V) transients per ISO 7637-2. Use Value: 40V absolute max input withstands load dump; shutdown pin enables ignition-synchronized power gating. |
| Point-of-Load Telecom Module | Medical Diagnostic Equipment Auxiliary Rail |
Use Scenario: Local 5V generation for FPGA configuration and memory interfaces in telecom line cards powered from 48V backplane. IC Role / Device Role / Timing Role: Secondary buck regulator delivering tightly regulated 5V from intermediate 12V rail. Use Value: Fixed 5V output eliminates feedback resistor errors; 150kHz frequency allows small 47µH shielded inductor. | Use Scenario: Isolated 5V supply for sensor signal conditioning and display backlight drivers in portable ultrasound units. IC Role / Device Role / Timing Role: Primary non-isolated DC/DC stage powering analog front-end and LCD controller subsystems. Use Value: Low 250µA shutdown current extends battery life; ±4% output tolerance ensures ADC reference stability. |
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 |
|---|---|---|---|
| LM2596S-5.0/NOPB | 3A, 150kHz, fixed 5V; TO263-5 package; no integrated SD pin (requires external transistor for shutdown) | Lacks logic-level shutdown; requires external circuit for enable control | Select if shutdown not required and TI ecosystem compatibility is prioritized |
| MP1584EN-LF-Z | 3A, 1.5MHz switching, adjustable only; SOIC-8; built-in soft-start and frequency sync capability | Higher frequency enables smaller magnetics but requires external feedback resistors for 5V | Select when board space is constrained and adjustable output flexibility is acceptable |
Compared with LM2596S-5.0/NOPB and MP1584EN-LF-Z, the AP1501-50K5L-13 uniquely combines fixed 5V output, integrated shutdown, TO263 thermal performance, and 150kHz frequency-making it optimal for cost-sensitive, thermally demanding industrial supplies where simplicity and reliability are critical.
Availability
AP1501-50K5L-13 is available at Aetrix Electronics and suitable for industrial PLC power supplies, automotive infotainment core rails, and point-of-load telecom modules requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AP1501-50K5L-13 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 consumer markets.
The AP1501 belongs to Diodes' standard buck converter product line, designed specifically for cost-effective, high-current DC/DC conversion in space-constrained industrial and automotive applications where integration and thermal robustness are essential.
FAQ
What is the minimum input voltage required for AP1501-50K5L-13 to regulate 5V output?
The AP1501-50K5L-13 requires a minimum input voltage of 7V to maintain regulation at full 3A load, as specified in the Recommended Operating Conditions table. Below 7V, dropout occurs and output collapses due to insufficient headroom for the internal switch saturation voltage (1.4V typical) and control circuitry.
Can the AP1501-50K5L-13 be used with an external synchronous rectifier?
No-the AP1501-50K5L-13 is a non-synchronous buck controller with an integrated N-channel MOSFET and requires an external Schottky catch diode (e.g., B340A). It lacks gate drive outputs or timing control for synchronous rectification, and adding external FETs would disrupt internal current sensing and protection functions.
Is the FB pin left floating or grounded in the fixed 5V version?
In the AP1501-50K5L-13 (fixed 5V version), the FB pin is internally connected to the output divider and must be left unconnected or tied to GND per Diodes Inc. datasheet Section 9. If left floating, leakage current may cause regulation drift; grounding ensures predictable bias and avoids noise coupling into the sensitive feedback node.
How does thermal performance differ between TO263-5L and TO220-5L(R) packages?
The TO263-5L package has θJA = 37°C/W (with 3 in² copper), while TO220-5L(R) achieves 31°C/W with heatsink. However, TO263 relies entirely on PCB copper for cooling-its θJC is 6°C/W versus 5°C/W for TO220-so actual junction temperature depends more on board layout than heatsink mounting. TO220 offers better peak power handling in compact enclosures with forced air.
AP1501-50K5L-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Cut Tape (CT)
- 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:
- Surface Mount
- Supplier Device Package:
- TO-263-5
AP1501-50K5L-13 FAQ
1.How can I place an order for AP1501-50K5L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1501-50K5L-13 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 AP1501-50K5L-13 reliable?
The price and inventory of AP1501-50K5L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1501-50K5L-13 is usually 5 days.
3.What payment methods are accepted for AP1501-50K5L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1501-50K5L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1501-50K5L-13?
AP1501-50K5L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1501-50K5L-13 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 AP1501-50K5L-13?
For technical support, including AP1501-50K5L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1501-50K5L-13 requirements.
6.How does Aetrix verify that AP1501-50K5L-13 is sourced from the original manufacturer or authorized distributors?
All AP1501-50K5L-13 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 AP1501-50K5L-13 meets industry standards.
7.What is the process for return or replacement of AP1501-50K5L-13?
All AP1501-50K5L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1501-50K5L-13, 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 AP1501-50K5L-13 part is unused and in its original packaging.
Return procedure for AP1501-50K5L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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