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Diodes Incorporated AP1512-50K5L-13
- Part No.:
- AP1512-50K5L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- -
- Datasheet:
-
AP1512-50K5L-13.pdf
- Description:
- IC REG BUCK 5V 2A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:157
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Product details
Overview
AP1512-50K5L-13 from Diodes Incorporated is a monolithic 50 kHz non-synchronous PWM buck DC/DC converter in TO263-5L package, delivering up to 2 A output current with fixed 5 V output, integrated power switch, thermal shutdown, and current-limit protection. It operates from 4.5 V to 60 V input, supports logic-level ON/OFF control, and targets industrial power rails requiring compact, low-component-count step-down regulation.
For engineers reviewing the AP1512-50K5L-13 datasheet, AP1512-50K5L-13 pinout, AP1512-50K5L-13 application, or AP1512-50K5L-13 equivalent, this device serves as a fixed-output, voltage-mode buck regulator optimized for high-input-voltage systems where board space, thermal robustness, and external component count are critical constraints.
Technical Context
The AP1512-50K5L-13 implements voltage-mode PWM control with internal 1.235 V reference and 50 kHz ±15% oscillator, enabling stable regulation without external compensation. Its integrated 2 A N-channel MOSFET switch features 1.3–1.5 V saturation voltage at full load and supports duty cycles from 0% to 100%.
Feedback is sensed via FB pin with 5–10 µA bias current; shutdown is controlled by SD pin with 0.6 V low threshold and 2.0 V high threshold. Thermal shutdown activates at ~125 °C junction temperature, and current limit is factory-trimmed to 2.5–5.5 A peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% across 0.2–2 A load and 10–60 V input - ensures stable rail for microcontrollers and analog circuitry. |
| Switching Frequency | 50 kHz ±15% - enables use of smaller, lower-cost inductors and capacitors versus 25–33 kHz alternatives. |
| Input Voltage Range | 4.5 V to 60 V - supports wide-range industrial, automotive, and telecom inputs without pre-regulation. |
| Output Current | 2 A continuous - sufficient for powering FPGAs, DSPs, or multi-rail systems with single-stage conversion. |
| Efficiency | 83% at VIN = 30 V, VOUT = 5 V, IOUT = 2 A - minimizes thermal load in enclosed or convection-cooled environments. |
| Thermal Resistance | θJA = 23 °C/W (with 3 in² copper) - requires ≥0.4 in² PCB copper pad on tab for safe operation at full load. |
| Shutdown Quiescent Current | 350 µA at VIN = 60 V - enables ultra-low-power standby in battery-backed or energy-sensitive systems. |
Pinout & Package
AP1512-50K5L-13 is housed in a surface-mount TO263-5L package with exposed metal tab (GND-connected) for thermal dissipation. The tab must be soldered to ≥0.4 in² of 2 oz copper for reliable thermal performance at 2 A load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN | Power input supply | Accepts 4.5–60 V; requires local 1 µF ceramic bypass capacitor to suppress switching transients. |
| 2: OUTPUT | Internal switch drain node | Drives external catch diode and inductor; trace must be short and narrow to reduce EMI coupling. |
| 3: GND | Power and signal ground reference | Common return for IC core, feedback, and shutdown; tied to exposed tab for thermal path. |
| 4: FB | Feedback voltage sense input | Monitors output via resistor divider; 1.235 V internal reference sets 5 V output with R1/R2 = 3.05kΩ/1.2kΩ. |
| 5: SD | Logic-level shutdown control | Pull ≤0.6 V to enable regulator; pull ≥2.0 V to enter 350 µA standby mode; open or grounded = always ON. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2 A power switch | Eliminates external MOSFET and gate driver, reducing BOM count and layout complexity. |
| Internal compensation network | Enables stable loop response with no external compensation components - simplifies design validation. |
| Thermal shutdown + current limit | Protects against sustained overload or ambient overtemperature without external sensing circuitry. |
| Logic-compatible ON/OFF control | Direct interface with MCU GPIO or system supervisor ICs without level-shifting circuitry. |
| Lead-free, RoHS-compliant TO263-5L | Meets EU Directive 2002/95/EC; compatible with standard reflow profiles for automated assembly. |
Applications
| Industrial Power Supply | Automotive Body Control Module |
|---|---|
|
Use Scenario: Generating stable 5 V rail from 12–48 V vehicle battery or industrial 24 V bus. IC Role / Device Role / Timing Role: Primary buck regulator supplying MCU, CAN transceivers, and sensor interfaces. Use Value: Withstands load dump transients up to 60 V input and maintains regulation during cold-crank dips to 4.5 V. |
Use Scenario: Local 5 V supply for door module ECUs managing window lift, mirror control, and lighting. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC converter replacing linear regulators to reduce heat and improve efficiency. Use Value: 83% efficiency at 2 A reduces PCB temperature rise vs. 70% linear solution, extending component lifetime. |
| Point-of-Load Converter | Legacy Equipment Retrofit |
|
Use Scenario: On-card 5 V generation for FPGA I/O banks or ADC/DAC reference supplies in test equipment. IC Role / Device Role / Timing Role: Fixed-output buck regulator with minimal external parts - ideal for space-constrained daughterboards. Use Value: TO263-5L package with GND tab provides direct thermal path to heatsink plane, supporting 2 A without fan cooling. |
Use Scenario: Replacing aging 7805 linear regulators in legacy PLC backplanes or motor drives. IC Role / Device Role / Timing Role: Drop-in upgrade offering higher efficiency, wider input range, and thermal protection. Use Value: Maintains same 5 V output while operating from 4.5–60 V input - eliminates need for upstream pre-regulators. |
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 |
|---|---|---|---|
| LM2575HVS-5.0 | 52 kHz switching frequency, 1 A output, requires external diode and compensation; no integrated thermal shutdown. | Limited to 1 A loads; less robust under overload or high ambient temperature. | Choose when cost sensitivity outweighs current capability and protection requirements. |
| MP1584EN-LF-Z | 1.5 MHz switching frequency, 3 A output, adjustable/fixed versions, requires external compensation; smaller inductor size. | Better suited for space-constrained designs but demands tighter layout for EMI control at high frequency. | Prefer for new designs needing higher efficiency above 1 MHz, provided layout discipline is maintained. |
Compared with LM2575HVS-5.0, AP1512-50K5L-13 delivers double the output current and built-in protection; versus MP1584EN-LF-Z, it trades higher-frequency efficiency for simpler layout and proven reliability in industrial 50 kHz applications.
Availability
AP1512-50K5L-13 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.
Supply support for AP1512-50K5L-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 automotive markets.
The AP1512 series belongs to Diodes' high-voltage buck regulator product line, designed specifically for rugged, low-component-count DC/DC conversion in harsh environments with wide input ranges and thermal stress.
FAQ
What is the minimum input voltage required for AP1512-50K5L-13 to regulate 5 V output?
The AP1512-50K5L-13 requires a minimum input voltage of 4.5 V to maintain regulation. Below this, the internal circuitry cannot sustain proper bias and switching operation, resulting in dropout or unregulated output. This threshold is specified in the Recommended Operating Conditions table and verified across –40 °C to +85 °C ambient.
Can AP1512-50K5L-13 be used with an adjustable output configuration?
No - AP1512-50K5L-13 is a fixed 5 V output variant. Only part numbers ending in "ADJ" (e.g., AP1512-ADJK5L-13) support adjustable output via external resistor divider on the FB pin. The -50 suffix explicitly denotes 5.0 V factory-trimmed output.
How does the SD pin behave when left unconnected?
When the SD pin is left floating or tied to GND, the regulator remains permanently enabled. The internal pull-down ensures activation unless pulled above 2.0 V. No external pull-up resistor is needed for default ON operation, simplifying board design.
Is the TO263-5L package lead-free and RoHS-compliant?
Yes - the "L" suffix in AP1512-50K5L-13 confirms lead-free finish and compliance with EU Directive 2002/95/EC (RoHS). The package uses matte tin plating and meets all applicable exemptions per Diodes Incorporated's RoHS documentation.
AP1512-50K5L-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- 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:
- -
- Supplier Device Package:
- -
AP1512-50K5L-13 FAQ
1.How can I place an order for AP1512-50K5L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1512-50K5L-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 AP1512-50K5L-13 reliable?
The price and inventory of AP1512-50K5L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1512-50K5L-13 is usually 5 days.
3.What payment methods are accepted for AP1512-50K5L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1512-50K5L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1512-50K5L-13?
AP1512-50K5L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1512-50K5L-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 AP1512-50K5L-13?
For technical support, including AP1512-50K5L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1512-50K5L-13 requirements.
6.How does Aetrix verify that AP1512-50K5L-13 is sourced from the original manufacturer or authorized distributors?
All AP1512-50K5L-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 AP1512-50K5L-13 meets industry standards.
7.What is the process for return or replacement of AP1512-50K5L-13?
All AP1512-50K5L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1512-50K5L-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 AP1512-50K5L-13 part is unused and in its original packaging.
Return procedure for AP1512-50K5L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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