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Diodes Incorporated AP1507-D5-13
- Part No.:
- AP1507-D5-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-6, DPAK (5 Leads + Tab)
- Datasheet:
-
AP1507-D5-13.pdf
- Description:
- IC REG BUCK ADJ 3A TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,555
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Product details
Overview
AP1507-D5-13 from Diodes Incorporated is a monolithic 150 kHz, 3A non-synchronous PWM buck DC/DC converter with integrated power switch, fixed-frequency voltage-mode control, internal compensation, and thermal/current protection. It delivers regulated 5V output (adjustable version), operates from 4.5–22V input, achieves up to 80% efficiency at 12VIN/5VOUT/3A, and targets compact on-card power supplies in industrial and embedded systems.
For engineers reviewing the AP1507-D5-13 datasheet, AP1507-D5-13 pinout, AP1507-D5-13 application, or AP1507-D5-13 equivalent, key selection criteria include its TO252-5 package thermal performance, 1.23V feedback reference tolerance, shutdown logic threshold (1.3V low), and fixed 150kHz switching frequency enabling predictable EMI filtering and small external inductor sizing.
Technical Context
The AP1507-D5-13 implements voltage-mode PWM control with a 1.235V internal reference and 150kHz oscillator, requiring no external compensation components. Its non-synchronous architecture uses an internal N-channel MOSFET switch and external Schottky catch diode, supporting duty cycles from 0% to 100% for wide input-to-output voltage ratios.
Protection functions include cycle-by-cycle current limiting (4.5A typical peak), thermal shutdown at ~150°C junction temperature, and automatic frequency reduction (to 10–50kHz) when overcurrent triggers and FB drops below 0.5V-enabling safe foldback under short-circuit conditions without latch-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous load capability without external transistor-reduces BOM count and PCB footprint. |
| Switching Frequency | 150kHz ±15% fixed frequency-enables use of smaller 47µH inductors and standard electrolytic/low-ESR output capacitors. |
| Feedback Reference | 1.23V ±1.5% (typical) at FB pin-sets output via resistor divider; supports 1.23–18V adjustable range with ±4% total output tolerance. |
| Input Voltage Range | 4.5V to 22V operating range-compatible with 5V, 12V, and 24V rail systems including automotive battery-supplied designs. |
| Efficiency | 80% typical at 12VIN, 5VOUT, 3A-minimizes thermal load in space-constrained applications with limited airflow. |
| Shutdown Current | 70–150µA standby quiescent current when SD pin >2.0V-enables low-power sleep modes in battery-backed systems. |
| Thermal Resistance | θJA = 50°C/W (TO252-5 on 2cm² 2oz copper)-requires ≥0.8in² PCB copper area for full 3A operation at +85°C ambient. |
Pinout & Package
AP1507-D5-13 is housed in a RoHS-compliant, halogen-free TO252-5 surface-mount package with exposed metal tab (GND-connected) for thermal dissipation. The 5-pin configuration supports high-current switching while maintaining compact board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Positive input supply | Accepts 4.5–22V DC; requires local ceramic bypass capacitor to handle high di/dt switching currents. |
| 2 Output | Internal power switch drain | Swings between (VIN – 1.6V) and ≈–0.5V; connects to inductor and catch diode anode-keep trace short and narrow to limit EMI coupling. |
| 3 GND | Power and signal ground | Common return for internal circuitry, feedback amplifier, and shutdown logic; ties to exposed metal tab for thermal path. |
| 4 FB | Output voltage feedback input | Senses divided output voltage; internal 1.23V reference compares against this node to regulate duty cycle-high-impedance input (≤50nA bias). |
| 5 SD | Shutdown control input | Logic-level enable: <1.3V = ON, >2.0V = OFF; pulls regulator into 150µA standby mode-can be tied to GND if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in 3A power switch | Eliminates external MOSFET, reducing component count, layout complexity, and cost in medium-power buck converters. |
| Internal compensation network | Enables stable regulation with only FB resistor divider-no external compensation capacitors or resistors required. |
| Thermal shutdown + current limit | Protects against sustained overload or ambient overheating; frequency foldback prevents thermal runaway during output shorts. |
| Adjustable output version | Supports 1.23–18V output via two-resistor divider-flexible for custom rails without redesigning controller or sourcing alternate fixed-voltage variants. |
| Lead-free, green TO252-5 package | Meets RoHS 2/3, REACH, and halogen-free standards (<900ppm Br/Cl, <1000ppm Sb); compatible with lead-free reflow profiles. |
Applications
| Industrial PLC I/O Module Power | Automotive Body Control Unit (BCU) |
|---|---|
|
Use Scenario: Providing isolated 5V rail for microcontroller, CAN transceiver, and sensor interface circuitry within DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary step-down regulator converting 24V field bus to clean 5V system rail with tight line/load regulation and robust ESD immunity (2kV HBM). Use Value: Internal current limit and thermal shutdown ensure reliable operation during 24V load dump transients and extended high-temperature cabinet environments. |
Use Scenario: Generating 5V supply for interior lighting controllers, door module ECUs, and LIN bus nodes in 12V automotive electrical architectures. IC Role / Device Role / Timing Role: Non-synchronous buck converter operating from battery (9–16V) with ON/OFF control synchronized to vehicle ignition state. Use Value: 150µA standby current enables low-quiescent operation during vehicle sleep mode; 22V max input withstands load dump surges per ISO 7637-2. |
| Medical Point-of-Care Diagnostic Device | Industrial IoT Edge Sensor Node |
|
Use Scenario: Powering ARM Cortex-M based data acquisition subsystems requiring stable 5V from portable Li-ion battery packs (8.4–12.6V). IC Role / Device Role / Timing Role: High-efficiency DC/DC stage delivering 3A peak current for ADC sampling bursts and wireless transmission pulses. Use Value: 80% efficiency at full load minimizes heat generation inside sealed enclosures; fixed 150kHz frequency simplifies conducted EMI filter design for EMC compliance. |
Use Scenario: Regulating 5V for LoRaWAN or NB-IoT modems, environmental sensors, and microcontrollers in battery-powered remote monitoring gateways. IC Role / Device Role / Timing Role: Primary power converter enabling scheduled wake-up cycles with ultra-low shutdown current and fast turn-on response. Use Value: SD pin logic control allows precise synchronization with MCU GPIO; 1.23V feedback reference enables accurate output trimming across temperature for sensor reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP1584EN-LF-Z (Monolithic Power) | 1.5MHz switching frequency, 4A output, requires external compensation, no frequency foldback on overcurrent. | Better suited for ultra-compact designs needing smaller inductors; less tolerant of sustained short-circuit conditions. | Select when board space is critical and transient overloads are rare; verify loop stability with external RC network. |
| LM2596S-5.0 (Texas Instruments) | 150kHz fixed frequency, 3A output, external compensation, no SD pin, wider input range (4.5–40V). | Ideal for high-input-voltage industrial supplies where shutdown control is unnecessary and layout simplicity is prioritized. | Choose when 40V max input is required and logic-controlled enable is not needed; note higher thermal resistance (θJA ≈ 65°C/W). |
Compared with MP1584EN-LF-Z and LM2596S-5.0, AP1507-D5-13 offers integrated shutdown control and frequency foldback for safer fault handling, while retaining the same 150kHz frequency and TO252-5 thermal profile-making it optimal for industrial and automotive applications demanding predictable protection behavior and moderate board area.
Availability
AP1507-D5-13 is available at Aetrix Electronics and suitable for industrial PLC power supplies, automotive body control units, medical diagnostic devices, and industrial IoT edge nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP1507-D5-13 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, automotive, and consumer markets.
The AP1507 series belongs to Diodes' high-current DC/DC converter product line, designed specifically for cost-sensitive, medium-power step-down applications where integration, thermal reliability, and protection robustness are critical.
FAQ
What is the minimum input voltage required for AP1507-D5-13 to regulate 5V output?
The AP1507-D5-13 requires a minimum input voltage of 4.5V to maintain regulation at 5V output, as specified in the Recommended Operating Conditions table. Below this, dropout occurs due to internal switch saturation voltage (~1.6V) and feedback reference headroom-ensuring stable operation only when VIN ≥ VOUT + 1.7V under full load.
Can AP1507-D5-13 be used in synchronous rectification configurations?
No-AP1507-D5-13 is a non-synchronous buck controller with a single internal N-channel MOSFET switch and requires an external Schottky diode for freewheeling. It lacks a second gate driver output or timing control for synchronous rectification; using an external MOSFET in place of the diode is not supported and may cause shoot-through or instability.
How does the frequency foldback feature behave during overcurrent events?
When overcurrent triggers and FB voltage falls below 0.5V, the AP1507-D5-13 reduces switching frequency from 150kHz to 10–50kHz (typical). This lowers average power dissipation in the internal switch during sustained overload or short-circuit, preventing thermal runaway while maintaining regulation attempt-distinct from latch-off or hiccup modes found in other controllers.
Is the TO252-5 package's metal tab electrically connected, and how should it be routed?
Yes-the metal tab of the TO252-5 package is internally connected to Pin 3 (GND) and must be soldered to a large PCB copper pour serving as both thermal sink and ground plane. Diodes recommends ≥0.8in² (2cm²) of 2oz copper; routing traces directly to the tab improves thermal resistance by up to 40% versus isolated pad connections.
AP1507-D5-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-6, DPAK (5 Leads + Tab)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 22V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 18V
- 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-D5-13 FAQ
1.How can I place an order for AP1507-D5-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1507-D5-13 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-D5-13 reliable?
The price and inventory of AP1507-D5-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1507-D5-13 is usually 5 days.
3.What payment methods are accepted for AP1507-D5-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1507-D5-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1507-D5-13?
AP1507-D5-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1507-D5-13 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-D5-13?
For technical support, including AP1507-D5-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1507-D5-13 requirements.
6.How does Aetrix verify that AP1507-D5-13 is sourced from the original manufacturer or authorized distributors?
All AP1507-D5-13 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-D5-13 meets industry standards.
7.What is the process for return or replacement of AP1507-D5-13?
All AP1507-D5-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1507-D5-13, 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-D5-13 part is unused and in its original packaging.
Return procedure for AP1507-D5-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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