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Diodes Incorporated AP1507-D5L-13
- Part No.:
- AP1507-D5L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- -
- Datasheet:
-
AP1507-D5L-13.pdf
- Description:
- IC REG BUCK ADJ 3A TO252-5
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Inventory:2,907
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Product details
Overview
AP1507-D5L-13 from Diodes Incorporated is a monolithic 150 kHz, 3A non-synchronous PWM buck DC/DC converter with integrated power switch, fixed 5V output, TO-252-5L package, and thermal/current protection-designed for board-space-constrained industrial and embedded power supplies delivering stable 5V at up to 3A from 8–22V input.
For engineers reviewing the AP1507-D5L-13 datasheet, AP1507-D5L-13 pinout, AP1507-D5L-13 application, or AP1507-D5L-13 equivalent, this device is selected for high-efficiency step-down regulation where internal compensation, logic-controlled shutdown, and ±4% output voltage tolerance under full load/temperature are critical design requirements.
Technical Context
The AP1507-D5L-13 implements voltage-mode PWM control with a fixed 150 kHz oscillator (±15%), internal 1.23 V reference, and built-in 3A N-channel MOSFET switch. Feedback is sensed at the FB pin using resistive divider (not required for fixed 5V version), and regulation is maintained via internal error amplifier and compensation network.
Protection includes cycle-by-cycle current limiting (4.5 A typical peak) and thermal shutdown (125°C junction). When overcurrent occurs and FB drops below 0.5 V, switching frequency reduces from 150 kHz to 10–50 kHz to limit power dissipation. Shutdown is asserted by pulling SD pin above 2.0 V, reducing quiescent current to 70–200 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% across 0.2–3 A load and −20°C to +85°C ambient |
| Switching Frequency | 150 kHz ±15%; enables use of compact 47 µH inductors and low-ESR output capacitors |
| Max Output Current | 3 A continuous; limited by internal MOSFET RDS(on) and thermal design of PCB copper area |
| Input Voltage Range | 4.5 V to 22 V; supports wide-input industrial rails including 12 V and 18 V nominal systems |
| Efficiency | 80% at VIN = 12 V, IOUT = 3 A; peaks near 89% at VIN = 16 V, VOUT = 12 V (per 12V variant) |
| Shutdown Quiescent Current | 70–200 µA at VIN = 22 V; enables ultra-low-power standby in battery-backed systems |
| Thermal Resistance | θJA = 50°C/W (TO-252-5L on 2 cm² 2 oz copper); requires ≥0.8 in² board copper for safe 3 A operation |
Pinout & Package
AP1507-D5L-13 is housed in a lead-free, RoHS-compliant TO-252-5L (DPAK-5) surface-mount package with exposed metal tab electrically connected to GND for thermal conduction. The tab must be soldered to ≥2 cm² of PCB copper for rated 3 A performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Power Input Supply | Accepts 4.5–22 V DC; requires local 100 µF low-ESR input capacitor to suppress switching transients |
| 2 Output | Internal Switch Drain Node | Swings between (VIN − 1.6 V) and ~−0.5 V; connects to inductor and Schottky catch diode anode |
| 3 GND | Ground Reference | Common return for IC bias, feedback, and shutdown; tied to exposed metal tab for thermal path |
| 4 FB | Feedback Sense Input | Internally biased to 1.23 V reference; unused in fixed 5V version but must remain unconnected or grounded per datasheet |
| 5 SD | Shutdown Control Input | Logic-compatible enable: <1.3 V = ON, >2.0 V = OFF; draws <1 µA; can be tied to GND if always enabled |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Switch | Built-in 3A N-MOSFET eliminates external transistor, reducing BOM count and layout complexity |
| Internal Compensation | Single-pole compensation network eliminates need for external RC networks-simplifies loop stability design |
| Logic-Level Shutdown | SD pin accepts standard CMOS/TTL levels; enables system-level power sequencing without level-shifting |
| Thermal & Current Protection | Auto-recovering thermal shutdown and foldback current limiting prevent damage during overload or poor heatsinking |
| Fixed 5V Output Accuracy | ±4% output tolerance over full temperature and load range ensures compatibility with 5V logic and peripherals |
Applications
| Industrial PLC I/O Modules | Embedded Network Routers |
|---|---|
|
Use Scenario: Powering isolated digital I/O banks and microcontroller peripherals in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary 5V step-down regulator converting 24V DC rail to clean, regulated 5V for FPGA configuration, optocoupler drivers, and RS-485 transceivers. Use Value: Delivers 3A continuously with internal current limiting and thermal shutdown-eliminates need for discrete protection circuitry in space-constrained enclosures. |
Use Scenario: Generating local 5V supply for Ethernet PHYs, packet processors, and DDR memory interfaces in fanless edge routers. IC Role / Device Role / Timing Role: Non-isolated buck converter supplying 5V at up to 3A from 12V intermediate bus; operates at fixed 150 kHz to avoid EMI-sensitive bands. Use Value: Internal compensation and ±4% output accuracy ensure stable timing margins for gigabit Ethernet MAC/PHY clock domains without external trimming. |
| Point-of-Load for Motor Drives | Test & Measurement Instrumentation |
|
Use Scenario: Providing auxiliary 5V rail for gate drivers, current sense amplifiers, and MCU supervision in compact BLDC motor controllers. IC Role / Device Role / Timing Role: High-current buck regulator placed adjacent to motor control ICs; uses exposed GND tab for direct thermal coupling to shared heatsink. Use Value: TO-252-5L package with 50°C/W θJA enables 3A operation with minimal copper area-reducing PCB layer count in cost-sensitive drives. |
Use Scenario: Powering precision ADC front-ends, DAC buffers, and microcontroller subsystems in portable multimeters and signal analyzers. IC Role / Device Role / Timing Role: Low-noise 5V source with shutdown control synchronized to measurement cycles to minimize standby power consumption. Use Value: 70–200 µA shutdown current extends battery life; fixed output eliminates resistor tolerance errors affecting analog reference stability. |
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; no integrated SD pin | Lacks logic-controlled shutdown; needs external catch diode and compensation components | Choose when tighter output tolerance is required and board space allows discrete diode placement |
| MP1584EN-LF-Z | 1.5 MHz switching, 3A, integrated diode; ±1.5% output; requires external compensation | Higher frequency enables smaller magnetics but increases EMI filtering complexity | Prefer for compact designs needing <10 µH inductors-accept trade-off of higher layout sensitivity and cost |
Compared with LM2596S-5.0/NOPB and MP1584EN-LF-Z, AP1507-D5L-13 offers integrated shutdown control and internal compensation at lower cost and reduced component count-ideal for cost-optimized, thermally managed 5V/3A rails where 150 kHz EMI profile is acceptable.
Availability
AP1507-D5L-13 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, embedded network routers, point-of-load motor drive supplies, and test & measurement instrumentation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP1507-D5L-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 consumer markets.
The AP1507 series belongs to Diodes' monolithic DC/DC converter product line, engineered for cost-sensitive, high-current step-down applications where integration, thermal robustness, and simplified layout are prioritized over ultra-high efficiency or ultra-low quiescent current.
FAQ
What is the minimum input voltage required for AP1507-D5L-13 to regulate 5V output?
The AP1507-D5L-13 requires a minimum input voltage of 4.5 V to maintain regulation at 5V output across full load and temperature range. Below this, dropout occurs-output voltage follows input minus saturation voltage (~1.6 V), resulting in unregulated behavior. Datasheet specifies 8–22 V for guaranteed 5V performance at 3A, but functional operation begins at 4.5 V with reduced headroom.
Can the AP1507-D5L-13 be used in adjustable-output configurations?
No-the AP1507-D5L-13 is factory-configured as a fixed 5V output device. Only the AP1507-ADJ variant (e.g., AP1507-ADJD5L-13) supports adjustable output via external resistor divider on the FB pin. Using the fixed 5V version in adjustable mode is not supported and will result in incorrect regulation due to internal feedback network hardwiring.
How should the exposed metal tab on the TO-252-5L package be connected?
The exposed metal tab is electrically connected to Pin 3 (GND) and must be soldered to a dedicated GND copper pour of at least 0.8 in² (≈5 cm²) for thermal performance. For 3A operation, Diodes recommends ≥2 in² (≈13 cm²) of 2 oz copper. No isolation or insulation is required-the tab is GND-referenced and serves as primary thermal path to the PCB.
Does AP1507-D5L-13 require an external catch diode?
Yes-an external Schottky diode (e.g., SB560, SS34) is mandatory. The AP1507-D5L-13 integrates only the high-side switch; the catch diode completes the buck converter's freewheeling path. Diodes Incorporated specifies a 3A+ Schottky with ≤0.55 V forward voltage and adequate thermal rating-omitting it causes catastrophic failure due to inductive kickback at the Output pin.
AP1507-D5L-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:
- -
AP1507-D5L-13 FAQ
1.How can I place an order for AP1507-D5L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1507-D5L-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-D5L-13 reliable?
The price and inventory of AP1507-D5L-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-D5L-13 is usually 5 days.
3.What payment methods are accepted for AP1507-D5L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1507-D5L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1507-D5L-13?
AP1507-D5L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1507-D5L-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-D5L-13?
For technical support, including AP1507-D5L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1507-D5L-13 requirements.
6.How does Aetrix verify that AP1507-D5L-13 is sourced from the original manufacturer or authorized distributors?
All AP1507-D5L-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-D5L-13 meets industry standards.
7.What is the process for return or replacement of AP1507-D5L-13?
All AP1507-D5L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1507-D5L-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-D5L-13 part is unused and in its original packaging.
Return procedure for AP1507-D5L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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