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Diodes Incorporated AP1501A-12K5G-13
- Part No.:
- AP1501A-12K5G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1501A-12K5G-13.pdf
- Description:
- IC REG BUCK 12V 5A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,475
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Product details
Overview
AP1501A-12K5G-13 from Diodes Incorporated is a fixed 12V, 150kHz non-synchronous PWM buck DC/DC converter IC with integrated 5A switch, thermal shutdown, current limit protection, and logic-level ON/OFF control. It operates from 15–40V input, delivers ±4% output voltage accuracy at 5A load, and uses TO263-5 package for high-power density in industrial power supplies.
For engineers reviewing the AP1501A-12K5G-13 datasheet, AP1501A-12K5G-13 pinout, AP1501A-12K5G-13 application, or AP1501A-12K5G-13 equivalent, key selection criteria include its fixed 12V output, 150kHz switching frequency, internal MOSFET integration, thermal shutdown behavior, and TO263-5 thermal performance under 5A continuous load.
Technical Context
The AP1501A-12K5G-13 implements voltage-mode PWM control with a built-in 1.23V reference and error amplifier, enabling stable regulation without external compensation components. Its oscillator runs at 150kHz ±15%, supporting compact LC filter design with typical 22µH inductors and low-ESR output capacitors.
Feedback is taken directly from the output via the FB pin (pin 4), referenced to the internal 1.23V bandgap; for the fixed-12V variant, this feedback network is internal. Shutdown is asserted by pulling SD (pin 5) above 2.0V, reducing quiescent current to 150–250µA while holding output off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12V ±4% across 0.2–5A load and 15–40V input - ensures stable rail for downstream logic or analog circuitry without external resistor divider. |
| Switching Frequency | 150kHz ±15% - enables use of smaller, lower-cost inductors (e.g., 22µH) and reduces EMI compared to 50–100kHz alternatives. |
| Max Output Current | 5A continuous - supports high-current applications like motor drivers or FPGA core supplies without external pass devices. |
| Input Voltage Range | 15V to 40V - compatible with 24V industrial bus systems and automotive battery-supplied systems with transient tolerance. |
| Efficiency | 88% at VIN=16V, IOUT=5A - minimizes thermal load in enclosed enclosures and extends reliability under full-load operation. |
| Protection Features | Thermal shutdown + peak current limit (6.0A typ.) - prevents device destruction during overload or poor heatsinking conditions. |
| Quiescent Current | 5–10mA active, 150–250µA standby - enables low-power sleep modes in battery-backed or energy-conscious systems. |
Pinout & Package
AP1501A-12K5G-13 is housed in a thermally enhanced TO263-5 (D²PAK) surface-mount package with exposed metal tab electrically connected to GND (pin 3) for PCB heat sinking. The package requires ≥0.8 in² copper area (ideally ≥2 in², 2 oz) for safe 5A operation at +85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Power input supply | Accepts 15–40V DC; requires local 100µF+ low-ESR input capacitor to handle 5A pulsed currents and suppress transients. |
| 2 Output | Switching node | Drives external Schottky catch diode and inductor; voltage swings between ~VIN–1.6V (ON) and –0.5V (OFF); minimize trace area to reduce EMI coupling. |
| 3 Gnd | Power and signal ground | Common return for VIN, FB, SD, and thermal tab; must be low-impedance connection to large copper pour for thermal and noise control. |
| 4 FB | Feedback input | Internally tied to 12V output divider; not user-accessible on fixed versions - no external resistor network required. |
| 5 SD | Shutdown control | Logic-compatible input: <1.3V = ON, >2.0V = OFF; pull to GND for always-on operation; open-circuit defaults to ON. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5A power switch | Eliminates need for external MOSFET and gate driver, reducing BOM count and layout complexity in space-constrained designs. |
| Internal compensation | Enables stable regulation with only input/output capacitors and inductor - no external compensation network required for standard layouts. |
| ±4% output voltage tolerance | Meets tight regulation requirements for microcontroller I/O rails or analog sensor supplies without post-regulation LDOs. |
| 150kHz fixed-frequency PWM | Provides predictable EMI profile and simplifies EMI filter design versus variable-frequency or hysteretic controllers. |
| Thermal shutdown + current limit | Self-protecting operation under short-circuit, overtemperature, or excessive load - avoids catastrophic failure without external monitoring circuits. |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
Use Scenario: 24V vehicle battery powers 12V logic subsystems in BCMs with intermittent high-current loads (e.g., window lift, mirror adjust). IC Role / Device Role / Timing Role: Primary step-down regulator delivering clean, regulated 12V at up to 5A to MCU, CAN transceivers, and driver ICs. Use Value: Integrated switch and thermal protection enable robust operation across –40°C to +85°C ambient without derating or external FETs. | Use Scenario: DIN-rail mounted PLC with 24V DC input powering multiple 12V field I/O modules requiring stable, ripple-free supply. IC Role / Device Role / Timing Role: High-current buck converter generating main 12V rail for digital logic, isolation drivers, and communication interfaces. Use Value: 88% efficiency at 5A reduces heat buildup in sealed enclosures; TO263-5 package allows direct thermal coupling to chassis ground. |
| Point-of-Load Telecom Supply | Test Equipment Auxiliary Rail |
Use Scenario: Compact 1U telecom shelf with distributed 12V distribution needing localized 12V/5A conversion near high-speed SerDes or PHY ICs. IC Role / Device Role / Timing Role: Local DC/DC regulator minimizing voltage drop and noise injection into sensitive analog/digital domains. Use Value: Fixed 12V output eliminates feedback resistor errors; 150kHz switching balances size and EMI for dense board layouts. | Use Scenario: Benchtop test instrument requiring isolated, low-noise 12V auxiliary supply for calibration circuitry and sensor biasing. IC Role / Device Role / Timing Role: Main DC/DC stage converting 24V system rail to precision 12V output with shutdown control for power sequencing. Use Value: Logic-level SD pin enables synchronized power-up/down with host controller; ±4% tolerance ensures measurement repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596S-12/NOPB | 3A rated, 150kHz, SOIC-8 package; lower current capability and higher RDS(on) (0.22Ω vs. ~0.15Ω equiv.) | Suitable for ≤3A loads; less thermal margin in same footprint; requires larger heatsink at full load. | Select when cost sensitivity outweighs current headroom and thermal performance is managed externally. |
| MP1584EN-LF-Z | 3A rated, adjustable/fixed variants, 1.5MHz switching, SOIC-8; higher frequency enables smaller magnetics but greater EMI filtering complexity. | Better for ultra-compact designs where 22µH inductor size is prohibitive; not drop-in due to different pinout and control scheme. | Choose for space-constrained applications where 1.5MHz operation justifies added EMI mitigation effort. |
Compared with LM2596S-12/NOPB and MP1584EN-LF-Z, AP1501A-12K5G-13 uniquely delivers 5A continuous output in TO263-5 with integrated thermal management and fixed 12V accuracy - making it optimal for industrial and automotive applications demanding unattended reliability at full load.
Availability
AP1501A-12K5G-13 is available at Aetrix Electronics and suitable for industrial PLC power supplies, automotive body control modules, point-of-load telecom converters, and test equipment auxiliary rails requiring stable component supply and long-term manufacturability.
Supply support for AP1501A-12K5G-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and connectivity applications.
The AP1501A series belongs to Diodes' high-current DC/DC converter product line, designed specifically for cost-sensitive, thermally demanding industrial and automotive power conversion where integration, reliability, and thermal robustness are critical.
FAQ
What is the maximum recommended input voltage for AP1501A-12K5G-13?
The absolute maximum input voltage is +45V, but the recommended operating range is 15V to 40V. Operation above 40V risks exceeding internal transistor breakdown limits and may trigger premature thermal shutdown under load. For 24V nominal systems with surge tolerance, ensure transient clamping or upstream TVS protection is implemented.
Can AP1501A-12K5G-13 be used in adjustable-output configurations?
No - AP1501A-12K5G-13 is a factory-trimmed fixed 12V output version. The FB pin is internally connected to the 12V divider and not accessible for external adjustment. To achieve adjustable output, select AP1501A-K5G-13 (ADJ version), which provides a 1.23V reference and requires external resistor feedback.
How does the SD pin behave when left unconnected?
When the SD pin (pin 5) is left floating or unconnected, the internal pull-down ensures the device remains enabled (ON). This default behavior eliminates the need for external pull-down resistors in always-on applications. However, for deterministic startup, tying SD to GND is recommended.
Is AP1501A-12K5G-13 qualified for automotive applications?
AP1501A-12K5G-13 is not AEC-Q100 qualified. While it operates across –20°C to +85°C ambient and includes automotive-grade protections (thermal shutdown, current limit), Diodes Incorporated explicitly states that AEC-Q100/101/200 qualification requires special change control and PPAP - contact Diodes directly for automotive-grade variants.
AP1501A-12K5G-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:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- 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-12K5G-13 FAQ
1.How can I place an order for AP1501A-12K5G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1501A-12K5G-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-12K5G-13 reliable?
The price and inventory of AP1501A-12K5G-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-12K5G-13 is usually 5 days.
3.What payment methods are accepted for AP1501A-12K5G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1501A-12K5G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1501A-12K5G-13?
AP1501A-12K5G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1501A-12K5G-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-12K5G-13?
For technical support, including AP1501A-12K5G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1501A-12K5G-13 requirements.
6.How does Aetrix verify that AP1501A-12K5G-13 is sourced from the original manufacturer or authorized distributors?
All AP1501A-12K5G-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-12K5G-13 meets industry standards.
7.What is the process for return or replacement of AP1501A-12K5G-13?
All AP1501A-12K5G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1501A-12K5G-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-12K5G-13 part is unused and in its original packaging.
Return procedure for AP1501A-12K5G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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