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Diodes Incorporated AP1507-50D5L-13
- Part No.:
- AP1507-50D5L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-6, DPAK (5 Leads + Tab)
- Datasheet:
-
AP1507-50D5L-13.pdf
- Description:
- IC REG BUCK 5V 3A TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,843
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Product details
Overview
AP1507-50D5L-13 from Diodes Incorporated is a monolithic 150 kHz, 3A non-synchronous PWM buck DC/DC converter with integrated power switch, fixed 5.0V output, TO-252-5L package, and thermal/current protection-designed for board-level step-down regulation in industrial power supplies and embedded systems.
For engineers reviewing the AP1507-50D5L-13 datasheet, AP1507-50D5L-13 pinout, AP1507-50D5L-13 application, or AP1507-50D5L-13 equivalent, this device supports high-efficiency 5V/3A conversion from 8–22V input, features logic-controlled shutdown, internal compensation, and ±4% output voltage tolerance under full load and temperature range.
Technical Context
The AP1507-50D5L-13 implements voltage-mode PWM control with a fixed 150 kHz oscillator (±15%), enabling compact external LC filter design. Its internal 3A N-channel DMOS switch and 1.235 V reference feed a feedback amplifier that regulates output by adjusting duty cycle via the FB pin.
Protection circuitry includes thermal shutdown (125°C junction limit) and peak current limiting (4.5 A typ), with frequency foldback to 30 kHz when overcurrent triggers and FB drops below 0.5 V-reducing power dissipation during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% (4.8–5.25 V at 0.2–3 A load, 8–22 VIN) |
| Switching Frequency | 150 kHz ±15% (127–173 kHz); enables use of smaller 47 µH inductors vs. lower-frequency regulators |
| Max Output Current | 3 A continuous; limited by internal switch saturation voltage (1.6 V max at 3 A) and thermal design |
| Input Voltage Range | 4.5 V to 22 V; supports wide-input industrial rails including 12 V and 18 V nominal systems |
| Efficiency | 80% typical at VIN = 12 V, IOUT = 3 A; peaks near 89% at VIN = 16 V, VOUT = 12 V |
| Shutdown Quiescent Current | 150 µA max at VIN = 22 V; enables low-power standby in battery-backed or energy-sensitive designs |
| Feedback Reference | 1.23 V (used internally for fixed-output versions; FB pin tied to output divider in adjustable variants) |
Pinout & Package
AP1507-50D5L-13 is housed in a lead-free, RoHS-compliant TO-252-5L (DPAK) surface-mount package with exposed metal tab for thermal conduction to PCB copper. The tab is electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Positive input supply | Accepts 4.5–22 V DC; requires local ceramic bypass capacitor to suppress switching transients |
| 2 Output | Internal power switch drain | Swings between ~0 V and (VIN – 1.6 V); connects to inductor and Schottky catch diode anode |
| 3 GND | Power and signal ground | Common return for internal bias, feedback, and shutdown circuits; ties to exposed tab |
| 4 FB | Output voltage feedback | Internally referenced to 1.23 V; for fixed 5V version, internally connected to output divider network |
| 5 SD | Shutdown control input | Logic-compatible: <1.3 V = ON, >2.0 V = OFF; draws <0.1 µA in either state |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 3A power switch | Eliminates need for external MOSFET, reducing BOM count and layout complexity in space-constrained designs |
| Internal compensation | Enables stable regulation with only two external components (inductor + output capacitor) across line/load variations |
| Thermal and current protection | Prevents permanent damage during overload or ambient overheating; foldback reduces stress during sustained faults |
| Logic-level shutdown | Allows microcontroller or system controller to disable regulator with minimal GPIO overhead and <150 µA quiescent draw |
| Fixed 5.0 V output | Guaranteed ±4% accuracy over full temperature and load range-suitable for powering digital logic, sensors, and interface ICs |
Applications
| Industrial PLC Power Supply | Embedded System Core Rail |
|---|---|
|
Use Scenario: Generating clean 5V rail from 12V or 24V backplane in programmable logic controllers. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering 3A to FPGA I/O banks, microcontroller peripherals, and communication interfaces. Use Value: High efficiency (80%) and thermal robustness enable operation in sealed enclosures up to +85°C ambient without forced airflow. |
Use Scenario: Providing main 5V supply to ARM-based single-board computers in edge computing gateways. IC Role / Device Role / Timing Role: Board-level DC/DC converter replacing linear regulators to reduce heat and improve power density. Use Value: Integrated switch and internal compensation cut solution size by >40% versus discrete controller + MOSFET designs. |
| Automotive Body Control Module | Test Equipment Auxiliary Supply |
|
Use Scenario: Powering MCU, CAN transceivers, and sensor interfaces in 12V automotive body electronics. IC Role / Device Role / Timing Role: Input-stage buck regulator accepting wide 8–22V automotive input range with transient immunity. Use Value: ±4% output tolerance ensures reliable logic-level compatibility across battery voltage fluctuations and cold-crank events. |
Use Scenario: Delivering stable 5V/3A to benchtop instrumentation modules requiring low-noise, fast-transient response. IC Role / Device Role / Timing Role: Fixed-output switching regulator with shutdown control for sequenced power-up of multi-rail test fixtures. Use Value: 150 kHz switching allows use of small, low-ESR ceramic capacitors and avoids audible noise in lab environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596S-5.0/NOPB | 150 kHz fixed frequency, 3A, but requires external diode; ±2% output tolerance; higher quiescent current (5 mA vs. 10 mA active) | Less integrated (external diode needed); better initial accuracy but lower efficiency at light loads due to higher IQ | Preferred where tighter initial output tolerance is critical and board space allows discrete diode placement. |
| MP1584EN-LF-Z | 1.5 MHz switching, 3A, adjustable-only output; requires external feedback resistors; no fixed 5V variant | Enables smaller magnetics but increases EMI filtering complexity; lacks pin-compatible fixed-voltage option | Chosen when footprint reduction is prioritized over EMI design effort and fixed-output simplicity. |
Compared with LM2596S-5.0/NOPB and MP1584EN-LF-Z, AP1507-50D5L-13 offers full integration (no external diode), guaranteed ±4% output across temperature/load, and lowest system component count for fixed-5V 3A applications-making it optimal for cost- and space-sensitive industrial designs.
Availability
AP1507-50D5L-13 is available at Aetrix Electronics and suitable for industrial PLCs, embedded computing platforms, automotive body control modules, and test equipment requiring stable component supply and long-term production continuity.
Supply support for AP1507-50D5L-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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.
The AP1507 series belongs to Diodes' standard buck converter product line, engineered for cost-effective, board-space-efficient DC/DC conversion in non-isolated applications where integration, thermal resilience, and wide input range are essential.
FAQ
What is the minimum recommended input voltage for AP1507-50D5L-13?
The absolute minimum operating input voltage is 4.5 V, but the recommended minimum is 8 V for the 5.0 V output version to ensure sufficient headroom for dropout and maintain regulation across full load and temperature. Below 8 V, duty cycle approaches 100%, increasing conduction losses and thermal stress on the internal switch.
Can AP1507-50D5L-13 be used in adjustable-output configurations?
No-AP1507-50D5L-13 is factory-trimmed for fixed 5.0 V output. Only the AP1507-ADJ variant supports external resistor programming. The FB pin in this part is internally connected to the output divider; connecting external resistors will disrupt regulation and may cause instability or overvoltage.
How does the thermal shutdown behave during sustained overload?
When junction temperature exceeds ~125°C, thermal shutdown disables the internal switch and forces the SD pin into high-impedance state. The device remains latched off until temperature falls below ~110°C hysteresis, then automatically resumes normal operation-no external reset required.
What PCB layout practices maximize thermal performance for AP1507-50D5L-13?
Solder the exposed metal tab directly to ≥2 in² of 2 oz. copper on the top layer, connected via multiple thermal vias to inner-layer ground planes. Keep output (Pin 2) trace narrow and short to minimize EMI coupling; avoid large copper pours on that net. Use wide VIN and GND traces to reduce IR drop and heating.
AP1507-50D5L-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-6, DPAK (5 Leads + Tab)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 22V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-5
AP1507-50D5L-13 FAQ
1.How can I place an order for AP1507-50D5L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1507-50D5L-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 AP1507-50D5L-13 reliable?
The price and inventory of AP1507-50D5L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1507-50D5L-13 is usually 5 days.
3.What payment methods are accepted for AP1507-50D5L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1507-50D5L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1507-50D5L-13?
AP1507-50D5L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1507-50D5L-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 AP1507-50D5L-13?
For technical support, including AP1507-50D5L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1507-50D5L-13 requirements.
6.How does Aetrix verify that AP1507-50D5L-13 is sourced from the original manufacturer or authorized distributors?
All AP1507-50D5L-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 AP1507-50D5L-13 meets industry standards.
7.What is the process for return or replacement of AP1507-50D5L-13?
All AP1507-50D5L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1507-50D5L-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 AP1507-50D5L-13 part is unused and in its original packaging.
Return procedure for AP1507-50D5L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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