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Diodes Incorporated AP1501A-K5G-13
- Part No.:
- AP1501A-K5G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1501A-K5G-13.pdf
- Description:
- IC REG BUCK ADJ 5A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:800
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Product details
Overview
AP1501A-K5G-13 from Diodes Incorporated is a monolithic 150 kHz, 5A non-synchronous PWM buck DC/DC converter in TO263-5 package with integrated power switch, ±4% output voltage tolerance (adjustable version), thermal shutdown, and logic-controlled ON/OFF shutdown. It delivers regulated 1.23V–37V output at up to 5A for industrial power supplies and embedded systems requiring compact, high-current step-down conversion.
For engineers reviewing the AP1501A-K5G-13 datasheet, AP1501A-K5G-13 pinout, AP1501A-K5G-13 application, or AP1501A-K5G-13 equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, and real-world design implications for fixed and adjustable-output buck regulator implementations.
Technical Context
The AP1501A-K5G-13 implements voltage-mode PWM control with an internal 150 kHz oscillator (±15%), 1.235 V reference, and built-in 5A N-channel MOSFET switch. Feedback is sensed via the FB pin using external resistor dividers for adjustable output configurations.
It integrates current-limit protection (6.0 A typical peak limit), thermal shutdown activation at ~125°C junction temperature, and standby quiescent current of 250 µA max when SD pin is pulled high. The device operates from 4.5 V to 40 V input and supports duty cycles from 0% to 100%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 150 kHz ±15% - enables use of smaller inductors (e.g., 18–22 µH) and reduces EMI compared to lower-frequency buck controllers |
| Output Current | 5 A continuous - integrated switch eliminates need for external MOSFET, simplifying layout and reducing BOM count |
| Feedback Reference | 1.23 V ±1.5% - sets minimum output voltage; used with R1/R2 divider to program 1.23V–37V output range |
| Input Voltage Range | 4.5 V to 40 V - supports wide-input industrial and automotive battery-derived supplies (e.g., 12 V/24 V nominal rails) |
| Output Voltage Tolerance | ±4% over full temp/load - ensures stable regulation without external trimming for most mid-power applications |
| Shutdown Quiescent Current | 250 µA max - enables low-power standby mode suitable for battery-backed or energy-sensitive systems |
| Thermal Shutdown Threshold | ~125°C junction - protects IC under overload or poor heatsinking; recovery occurs after cooldown |
| Current Limit | 6.0 A typical peak - prevents destructive overcurrent during short-circuit or startup transients |
Pinout & Package
AP1501A-K5G-13 uses the TO263-5 surface-mount package with exposed metal tab connected internally to GND. Thermal performance relies on ≥0.8 in² PCB copper area soldered to the tab; recommended layout uses ≥2 in² of 2 oz copper for 5A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Positive input supply | Accepts 4.5–40 V DC; requires local ceramic bypass capacitor to suppress switching transients |
| 2 Output | Internal switch drain node | Drives external catch diode and inductor; voltage swings between VIN–VSAT (~1.6 V drop) and ~–0.5 V |
| 3 Gnd | Power and signal ground | Common return for internal circuitry, feedback, and shutdown; tied to exposed metal tab |
| 4 FB | Voltage feedback input | Senses output via resistor divider; regulates output by comparing to 1.23 V internal reference |
| 5 SD | Shutdown control input | Logic-level input: <1.3 V = ON, >2.0 V = OFF; draws ≤25 µA when active |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5A Power Switch | Eliminates external MOSFET and gate driver, reducing board space and component count in high-current buck designs |
| Adjustable Output (1.23–37 V) | Enables single part number to support multiple output voltages via external resistor selection-no redesign needed |
| Internal Compensation | Removes need for external compensation network, simplifying loop stability design across load and line variations |
| Thermal + Current Protection | Prevents permanent damage during fault conditions without requiring external sensing or protection circuitry |
| ON/OFF Logic Control | Allows system-level power sequencing and sleep/wake coordination using standard digital I/O signals |
| RoHS/Green Compliant | Fully lead-free, halogen- and antimony-free per Diodes Inc. definitions-meets global environmental compliance requirements |
Applications
| Industrial Power Supply | Embedded System Core Rail |
|---|---|
|
Use Scenario: Step-down conversion from 24 V industrial bus to 5 V/5 A for PLC I/O modules. IC Role / Device Role / Timing Role: Primary buck controller providing regulated 5 V core rail with integrated switch and feedback control. Use Value: Reduces solution size by eliminating external MOSFET and simplifies thermal management with TO263-5's PCB-integrated heatsink capability. |
Use Scenario: Generating 3.3 V/5 A for FPGA or microcontroller core logic in edge computing gateway. IC Role / Device Role / Timing Role: Non-synchronous buck regulator delivering stable core voltage with ±4% accuracy across –20°C to +85°C ambient. Use Value: Internal 150 kHz switching allows compact 22 µH inductor and avoids audible noise while maintaining >71% efficiency at full load. |
| Automotive Body Control Module | Test Equipment Power Stage |
|
Use Scenario: Converting 12 V vehicle battery to adjustable 12 V/5 A output for LED driver bias in BCM. IC Role / Device Role / Timing Role: Adjustable-output buck controller enabling flexible voltage programming for varying LED string configurations. Use Value: 40 V absolute max input rating accommodates load-dump transients; thermal shutdown protects against enclosure overheating. |
Use Scenario: Programmable bench power supply stage delivering 1.23–37 V/5 A for DUT testing. IC Role / Device Role / Timing Role: Adjustable buck regulator used as main output stage with external potentiometer-based R1/R2 divider. Use Value: ±4% output tolerance and 1.23 V reference enable precise voltage setting without calibration; SD pin allows remote enable/disable. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596S-ADJ | 150 kHz fixed frequency, 3 A output, no integrated thermal shutdown; requires external compensation | Limited to 3 A loads; less robust fault protection; higher external component count | Select when cost sensitivity outweighs current requirement and thermal safety needs |
| MP1584EN-LF-Z | 1.5 MHz switching, 4 A output, synchronous rectification, smaller external components | Better light-load efficiency and smaller footprint but lower max current and narrower input range (4.5–28 V) | Select for space-constrained, high-efficiency designs where 4 A suffices and 28 V max input is acceptable |
Compared with LM2596S-ADJ and MP1584EN-LF-Z, AP1501A-K5G-13 uniquely delivers 5 A output with integrated thermal/current protection and 40 V input rating-making it optimal for ruggedized industrial and automotive applications demanding higher current and wider input tolerance.
Availability
AP1501A-K5G-13 is available at Aetrix Electronics and suitable for industrial power supplies, embedded system core rails, automotive body control modules, and test equipment power stages requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP1501A-K5G-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, headquartered in California and operating ISO/TS 16949-certified facilities.
The AP1501A series belongs to Diodes' high-current DC/DC converter product line, designed specifically for cost-sensitive, high-reliability industrial and automotive applications requiring integrated power switches and robust protection features.
FAQ
What is the maximum input voltage for AP1501A-K5G-13?
The absolute maximum input voltage is +45 V, but the recommended operating range is 4.5 V to 40 V. Operation above 40 V risks exceeding safe operating area limits and may trigger internal protection or cause reliability degradation. For automotive applications with load dump, ensure transient clamping is implemented upstream.
Can AP1501A-K5G-13 be used in synchronous buck configuration?
No-it is a non-synchronous PWM controller with only a single integrated N-channel MOSFET switch. An external Schottky catch diode is required. Synchronous operation is not supported due to lack of complementary low-side driver or bootstrap circuitry.
How is output voltage set in the adjustable version?
Output voltage is set using two external resistors (R1 from FB to GND, R2 from VOUT to FB) according to VOUT = 1.23 V × (1 + R2/R1). R2 should be 1 kΩ to 3 kΩ for stability; total divider current must remain below 60 nA to avoid regulation error.
Does AP1501A-K5G-13 require external compensation components?
No-the AP1501A-K5G-13 includes internal frequency compensation, eliminating the need for external RC networks. This simplifies design and improves stability across line, load, and temperature variations without tuning.
AP1501A-K5G-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:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 37V
- 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-K5G-13 FAQ
1.How can I place an order for AP1501A-K5G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1501A-K5G-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-K5G-13 reliable?
The price and inventory of AP1501A-K5G-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-K5G-13 is usually 5 days.
3.What payment methods are accepted for AP1501A-K5G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1501A-K5G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1501A-K5G-13?
AP1501A-K5G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1501A-K5G-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-K5G-13?
For technical support, including AP1501A-K5G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1501A-K5G-13 requirements.
6.How does Aetrix verify that AP1501A-K5G-13 is sourced from the original manufacturer or authorized distributors?
All AP1501A-K5G-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-K5G-13 meets industry standards.
7.What is the process for return or replacement of AP1501A-K5G-13?
All AP1501A-K5G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1501A-K5G-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-K5G-13 part is unused and in its original packaging.
Return procedure for AP1501A-K5G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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