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Diodes Incorporated AP1501A-50K5G-13
- Part No.:
- AP1501A-50K5G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1501A-50K5G-13.pdf
- Description:
- IC REG BUCK 5V 5A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,316
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Product details
Overview
AP1501A-50K5G-13 from Diodes Incorporated is a monolithic 150 kHz, 5 A non-synchronous PWM buck DC/DC converter with fixed 5 V output, integrated power switch, thermal shutdown, and current-limit protection. It operates from 4.5 V to 40 V input, delivers ±4% output voltage accuracy at 5 V under full load, and uses a TO263-5 surface-mount package for high-power density in industrial power supplies.
For engineers reviewing the AP1501A-50K5G-13 datasheet, AP1501A-50K5G-13 pinout, AP1501A-50K5G-13 application, or AP1501A-50K5G-13 equivalent, key selection considerations include its fixed 5 V output, 150 kHz switching frequency enabling compact LC filtering, ON/OFF logic-controlled shutdown, internal compensation eliminating external loop components, and thermal performance on PCB copper heatsinking.
Technical Context
The AP1501A-50K5G-13 implements voltage-mode PWM control with a built-in 1.23 V reference and error amplifier, enabling stable regulation without external compensation. Its 150 kHz oscillator sets the switching period, and the internal 5 A N-channel MOSFET switch drives the inductor directly.
Feedback is taken via the FB pin referenced to the 1.23 V internal bandgap, allowing precise output regulation. The SD pin accepts TTL/CMOS-compatible logic signals (VIL ≤ 0.6 V, VIH ≥ 2.0 V) to enable or disable switching, reducing quiescent current to 150–250 µA in standby mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% across 0.2–5 A load and 8–40 V input - ensures stable rail for microcontrollers and logic without external resistor divider. |
| Switching Frequency | 150 kHz ±15% - enables use of smaller, lower-cost inductors (e.g., 22 µH) and electrolytic output capacitors versus lower-frequency alternatives. |
| Output Current | 5 A continuous - supports high-current point-of-load conversion without external pass transistor or parallel ICs. |
| Input Voltage Range | 4.5 V to 40 V - accommodates wide-input industrial, automotive (non-AEC-Q100), and battery-backed systems. |
| Efficiency | 78% typical at VIN = 12 V, IOUT = 5 A - balances thermal dissipation and board area constraints in thermally constrained enclosures. |
| Thermal Protection | Internal thermal shutdown - disables switching above ~125 °C junction temperature, preventing permanent damage during overload or poor heatsinking. |
| Shutdown Quiescent Current | 150–250 µA at VIN = 40 V - enables low-power system-level sleep modes without external LDO or PMIC coordination. |
Pinout & Package
AP1501A-50K5G-13 is housed in a TO263-5 (D²PAK) surface-mount package with an exposed metal tab electrically connected to GND, designed for soldering to ≥0.8 in² of 2 oz copper for thermal conduction. The tab serves as the primary heat path to the PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Positive input supply | Accepts 4.5–40 V DC; requires local ceramic bypass capacitor to handle high di/dt switching currents. |
| 2 Output | Switching node | Drives external inductor; swings between VIN–VSAT (~1.6 V drop) and ~−0.5 V; must minimize copper area to reduce EMI coupling. |
| 3 Gnd | Power and signal ground | Common return for internal circuitry, feedback, and shutdown; connects to exposed metal tab for thermal and electrical grounding. |
| 4 FB | Feedback input | Senses output voltage via resistive divider; internally references 1.23 V; open-circuit or shorted to GND forces regulator ON. |
| 5 SD | Shutdown control | Logic-level input: <0.6 V enables regulation, >2.0 V disables switching and reduces IQ to ≤250 µA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5 A power switch | Eliminates need for external MOSFET and gate driver, reducing BOM count and layout complexity in 5 A buck designs. |
| Internal compensation network | Enables stable loop response with no external compensation components-reduces design iteration time and footprint. |
| ±4% output voltage tolerance | Meets tight regulation requirements for digital logic rails without post-regulation LDOs in cost-sensitive applications. |
| ON/OFF logic shutdown | Supports system-level power sequencing and low-power sleep states using standard GPIO, without auxiliary control circuitry. |
| RoHS-compliant, halogen-free "Green" construction | Fulfills environmental compliance mandates (EU RoHS 2/3, <900 ppm Br/Cl, <1000 ppm Sb) for industrial and commercial deployments. |
Applications
| Industrial PLC Power Supply | Embedded System Main Rail |
|---|---|
|
Use Scenario: Providing regulated 5 V at up to 5 A to programmable logic controllers operating from 24 V DC industrial bus. IC Role / Device Role / Timing Role: Primary step-down regulator converting unregulated 24 V field power to clean 5 V logic rail for CPU, I/O drivers, and communication interfaces. Use Value: High current capability and thermal robustness allow direct integration onto main controller PCB without heatsink, reducing system size and assembly cost. |
Use Scenario: Generating 5 V main power for ARM-based embedded computers in kiosks, medical displays, and test equipment. IC Role / Device Role / Timing Role: Non-synchronous buck controller delivering stable 5 V from wide-input 9–36 V DC adapters or PoE-derived sources. Use Value: Fixed-output configuration and internal compensation accelerate design cycle; 150 kHz switching enables compact 22 µH inductor and low-ESR bulk capacitor selection. |
| Point-of-Load Converter | Legacy Equipment Retrofit |
|
Use Scenario: Replacing aging linear regulators in legacy instrumentation requiring 5 V/4 A with improved efficiency and thermal performance. IC Role / Device Role / Timing Role: Drop-in replacement buck converter providing same 5 V output but with 78% efficiency vs. <40% for linear solutions at full load. Use Value: Reduces board temperature rise by >30 °C compared to linear regulators, extending component lifetime and eliminating forced-air cooling. |
Use Scenario: Upgrading obsolete 7805-based power sections in factory automation hardware to meet modern efficiency and space constraints. IC Role / Device Role / Timing Role: Monolithic 5 V buck IC replacing discrete transistor+controller designs while maintaining identical output pinout and voltage specification. Use Value: Single-chip integration cuts component count by >6 parts, improves reliability, and simplifies qualification for long-lifecycle industrial programs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596S-5.0/NOPB | 3 A rated, 150 kHz, SO-8 package; requires external compensation; ±2% output tolerance. | Limited to 3 A loads; lower current headroom; SO-8 thermal resistance higher than TO263-5. | Select when 3 A suffices and SO-8 footprint is preferred; not suitable for sustained 5 A operation. |
| MP1584EN-LF-Z | 3 A rated, 1.5 MHz, SO-8; adjustable/fixed versions; requires external compensation; ±1.5% output tolerance. | Higher switching frequency enables smaller magnetics but increases EMI sensitivity and gate drive losses. | Choose for ultra-compact designs where 3 A is adequate and 1.5 MHz allows sub-10 µH inductors; avoid for 5 A thermal margin. |
Compared with LM2596S-5.0/NOPB and MP1584EN-LF-Z, AP1501A-50K5G-13 uniquely delivers 5 A continuous current in a thermally optimized TO263-5 package with internal compensation-making it the only option among the three capable of full 5 A operation without derating or external FETs.
Availability
AP1501A-50K5G-13 is available at Aetrix Electronics and suitable for industrial PLC power supplies, embedded system main rails, and point-of-load converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AP1501A-50K5G-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 devices for industrial, computing, and consumer markets.
The AP1501A series belongs to Diodes' high-current DC/DC converter product line, engineered specifically for cost-sensitive, high-reliability industrial power conversion where integrated 5 A switching capability and minimal external components are critical.
FAQ
What is the maximum recommended ambient temperature for continuous 5 A operation with AP1501A-50K5G-13?
At 5 A load and VIN = 12 V, the TO263-5 package requires ≥2 in² of 2 oz copper on the PCB to maintain TJ ≤ 125 °C. With that layout, continuous operation is supported up to +85 °C ambient. Above that, derating or forced airflow is required-junction temperature must not exceed 125 °C per absolute maximum ratings.
Can AP1501A-50K5G-13 be used with an input voltage below 4.5 V?
No. The device has a minimum operating input voltage of 4.5 V per recommended conditions. Below this, startup is not guaranteed, regulation fails, and internal bias circuits may not function-resulting in erratic switching or no output. For sub-4.5 V inputs, consider a different buck controller or pre-regulator stage.
Is the metal tab on the TO263-5 package electrically isolated?
No. The metal tab is internally connected to Pin 3 (GND) and must be soldered to a GND plane. Using it as a thermal pad without GND connection violates the internal pin mapping and risks latch-up or malfunction. Thermal design must treat the tab as both thermal sink and ground return path.
Does AP1501A-50K5G-13 support synchronous rectification?
No. It is a non-synchronous buck controller with an internal N-channel MOSFET and requires an external Schottky catch diode (e.g., SB560). Synchronous operation would require a second actively driven switch and complementary gate timing-neither of which is implemented in this IC's architecture.
AP1501A-50K5G-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5A
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263-5
AP1501A-50K5G-13 FAQ
1.How can I place an order for AP1501A-50K5G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1501A-50K5G-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 AP1501A-50K5G-13 reliable?
The price and inventory of AP1501A-50K5G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1501A-50K5G-13 is usually 5 days.
3.What payment methods are accepted for AP1501A-50K5G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1501A-50K5G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1501A-50K5G-13?
AP1501A-50K5G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1501A-50K5G-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 AP1501A-50K5G-13?
For technical support, including AP1501A-50K5G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1501A-50K5G-13 requirements.
6.How does Aetrix verify that AP1501A-50K5G-13 is sourced from the original manufacturer or authorized distributors?
All AP1501A-50K5G-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 AP1501A-50K5G-13 meets industry standards.
7.What is the process for return or replacement of AP1501A-50K5G-13?
All AP1501A-50K5G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1501A-50K5G-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 AP1501A-50K5G-13 part is unused and in its original packaging.
Return procedure for AP1501A-50K5G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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