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Diodes Incorporated AP1512-K5L-13
- Part No.:
- AP1512-K5L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1512-K5L-13.pdf
- Description:
- IC REG BUCK ADJ 2A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,112
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Product details
Overview
AP1512-K5L-13 from Diodes Incorporated is a monolithic 50 kHz non-synchronous PWM buck DC/DC converter in TO263-5L package, integrating a 2A internal switch, fixed 5V output, ±4% output voltage tolerance at full load, and logic-controlled ON/OFF shutdown. It operates from 4.5V to 60V input and delivers regulated 5V output for industrial power rails and embedded subsystems.
For engineers reviewing the AP1512-K5L-13 datasheet, AP1512-K5L-13 pinout, AP1512-K5L-13 application, or AP1512-K5L-13 equivalent, key selection criteria include input voltage range (4.5–60 V), integrated 2A switch capability, thermal shutdown protection, fixed 5V output accuracy, and TO263-5L thermal performance with θJA = 23°C/W on 3 in² copper.
Technical Context
The AP1512-K5L-13 implements voltage-mode PWM control with internal 1.235 V reference and frequency-compensated error amplifier, enabling stable regulation without external compensation components. Its 50 kHz ±15% oscillator sets switching period and directly determines external inductor and capacitor sizing.
It integrates a high-side N-channel MOSFET switch with 1.3–1.5 V saturation voltage at 2 A, thermal shutdown triggered above +125°C junction temperature, and current-limit protection activating at 2.5–5.5 A peak switch current. Shutdown is asserted via SD pin logic threshold (VIL ≤ 0.6 V, VIH ≥ 2.0 V).
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; enables direct replacement of linear regulators in 5 V rail designs. |
| Switching Frequency | 50 kHz ±15%; allows use of low-cost, high-inductance chokes (e.g., 47 µH) and reduces EMI compared to higher-frequency alternatives. |
| Input Voltage Range | 4.5 V to 60 V; supports wide-input industrial, automotive battery, and PoE-powered systems without pre-regulation. |
| Output Current | 2 A continuous; sufficient for powering microcontrollers, sensors, and interface ICs without external pass devices. |
| Efficiency | 83% at VIN = 30 V, VOUT = 5 V, IOUT = 2 A; minimizes thermal load in enclosed or convection-cooled enclosures. |
| Thermal Resistance | θJA = 23°C/W with 3 in² copper; requires minimum 0.4 in² PCB copper pad under 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-harvesting applications. |
Pinout & Package
AP1512-K5L-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 PCB copper area for reliable 2 A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Positive input supply | Accepts 4.5–60 V; requires local 1 µF ceramic bypass capacitor to suppress switching transients. |
| OUTPUT (Pin 2) | Internal switch drain | Drives external inductor; voltage swings between (VIN – 1.5 V) and –0.5 V; minimal copper area recommended to reduce EMI coupling. |
| GND (Pin 3) | Power and signal ground | Common return for internal circuitry, feedback amplifier, and thermal sensor; connects to exposed metal tab. |
| FB (Pin 4) | Feedback input | Monitors output via resistive divider; internally referenced to 1.235 V; not used in fixed-5V version (internally tied). |
| SD (Pin 5) | Shutdown control | Logic-level input: ≤0.6 V = ON, ≥2.0 V = OFF; draws <10 µA; open or grounded = default ON state. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2 A power switch | Eliminates need for external MOSFET and gate driver, reducing BOM count and layout complexity in space-constrained designs. |
| Internal compensation network | Enables stable loop response with only two external components (inductor + output capacitor); no external RC compensation required. |
| Thermal shutdown + current limit | Protects against sustained overload or poor heatsinking by disabling switching before junction exceeds +125°C or peak current exceeds 5.5 A. |
| Logic-compatible shutdown | Direct interface with MCU GPIO or system supervisor ICs without level-shifting; consumes only 350 µA in standby mode. |
| Lead-free / RoHS-compliant packaging | TO263-5L package with matte tin lead finish meets EU Directive 2002/95/EC; compatible with standard Pb-free reflow profiles. |
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 for microcontroller and CAN transceiver power. IC Role / Device Role / Timing Role: Primary step-down regulator providing isolated, regulated 5 V output with built-in overcurrent and thermal protection. Use Value: Replaces discrete buck controller + MOSFET solution, reducing footprint by >40% while maintaining 83% efficiency at 2 A load. |
Use Scenario: Powering door module ECUs, seat controllers, or lighting drivers where input voltage varies from cold-crank (6 V) to load-dump (60 V). IC Role / Device Role / Timing Role: Input-tolerant DC/DC converter delivering robust 5 V supply with shutdown control synchronized to vehicle ignition state. Use Value: Withstands 60 V max input and shuts down cleanly at <0.6 V logic, enabling direct connection to vehicle wake-up lines. |
| POS Terminal Power Rail | IoT Edge Sensor Hub |
|
Use Scenario: Converting 12 V adapter input to clean 5 V for payment processor, display, and USB peripheral interfaces in retail terminals. IC Role / Device Role / Timing Role: Fixed-output buck regulator supplying noise-sensitive digital loads with low quiescent current during idle periods. Use Value: 350 µA standby current extends backup battery life; ±4% output tolerance ensures reliable USB device enumeration. |
Use Scenario: Powering ARM Cortex-M based sensor nodes powered from solar-charged LiFePO₄ batteries (10–36 V range). IC Role / Device Role / Timing Role: Main system regulator enabling deep-sleep modes via SD pin control and fast wake-up from shutdown state. Use Value: Logic-level shutdown allows MCU to cut regulator supply during sleep, reducing total system quiescent draw to sub-µA levels. |
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 |
|---|---|---|---|
| MP1584EN-LF-Z (Monolithic Power) | 3 A rated, 1.5 MHz switching, requires external compensation; no integrated thermal shutdown flag. | Higher efficiency at light loads due to frequency; less suitable for EMI-sensitive environments without added filtering. | Choose when higher output current or smaller magnetics are needed; verify loop stability with external compensation network. |
| LM2596S-5.0 (Texas Instruments) | 3 A rated, 150 kHz, external feedback resistor network required even for fixed 5 V; no logic shutdown pin. | Lacks dedicated ON/OFF control; shutdown requires external transistor or enable circuit, increasing component count. | Prefer when cost sensitivity outweighs board space constraints and shutdown functionality is not required. |
Compared with MP1584EN-LF-Z and LM2596S-5.0, AP1512-K5L-13 offers integrated shutdown control, internal compensation, and guaranteed thermal protection in a single TO263-5L package-reducing design risk and validation effort for industrial 2 A applications.
Availability
AP1512-K5L-13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, POS terminal power rails, and IoT edge sensor hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP1512-K5L-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 and automotive markets.
The AP1512 product line delivers rugged, integrated buck converters targeting cost-sensitive, thermally constrained applications where simplicity, input voltage range, and protection features outweigh ultra-high efficiency or high-frequency operation.
FAQ
What is the maximum input voltage rating for AP1512-K5L-13?
The absolute maximum input voltage is +63 V, but the recommended operating range is +4.5 V to +60 V. Operation above 60 V risks exceeding internal transistor breakdown limits and invalidates parametric guarantees. Sustained operation at 60 V requires adequate PCB copper area (≥3 in²) to maintain junction temperature below +125°C at full 2 A load.
Does AP1512-K5L-13 require external compensation components?
No. AP1512-K5L-13 includes an internally compensated error amplifier optimized for standard buck configurations with typical output capacitors (≥470 µF) and inductors (33–47 µH). External compensation is neither required nor supported-the FB pin is internally connected to the 1.235 V reference for fixed 5 V operation.
Can AP1512-K5L-13 be used in adjustable-output configurations?
No. AP1512-K5L-13 is factory-configured for fixed 5.0 V output. Only part numbers ending in "ADJ" (e.g., AP1512-ADJK5L-13) support external resistor feedback. Attempting to modify the output voltage of the -K5L-13 variant will result in incorrect regulation or instability due to internal FB node routing.
How does thermal performance scale with PCB copper area?
θJA improves from 23°C/W (3 in² copper) to ~30°C/W (0.4 in²) and degrades beyond ~6 in² with diminishing returns. Doubling copper area from 3 in² to 6 in² typically lowers junction temperature by only 3–5°C at 2 A. For ambient >85°C or continuous 2 A loads, forced airflow or double-sided copper is strongly advised.
AP1512-K5L-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:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 37V
- Current - Output:
- 2A
- Frequency - Switching:
- 50kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263-5
AP1512-K5L-13 FAQ
1.How can I place an order for AP1512-K5L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1512-K5L-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-K5L-13 reliable?
The price and inventory of AP1512-K5L-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-K5L-13 is usually 5 days.
3.What payment methods are accepted for AP1512-K5L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1512-K5L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1512-K5L-13?
AP1512-K5L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1512-K5L-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-K5L-13?
For technical support, including AP1512-K5L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1512-K5L-13 requirements.
6.How does Aetrix verify that AP1512-K5L-13 is sourced from the original manufacturer or authorized distributors?
All AP1512-K5L-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-K5L-13 meets industry standards.
7.What is the process for return or replacement of AP1512-K5L-13?
All AP1512-K5L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1512-K5L-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-K5L-13 part is unused and in its original packaging.
Return procedure for AP1512-K5L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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