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Diodes Incorporated AP1512A-K5G-13
- Part No.:
- AP1512A-K5G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1512A-K5G-13.pdf
- Description:
- IC REG BUCK 2A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,768
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Product details
Overview
AP1512A-K5G-13 from Diodes Incorporated is a monolithic 50 kHz non-synchronous PWM buck DC/DC converter with integrated 3 A switch, fixed 5 V output, TO263-5L package, and logic-level ON/OFF shutdown control-designed for high-efficiency step-down regulation in industrial power supplies and on-card converters.
For engineers reviewing the AP1512A-K5G-13 datasheet, AP1512A-K5G-13 pinout, AP1512A-K5G-13 application, or AP1512A-K5G-13 equivalent, key selection criteria include its 5 V ±4% output tolerance, 4.5–60 V input range, thermal/current protection, and compatibility with standard 47 µH inductors and B360/B Schottky diodes in minimal external-component designs.
Technical Context
The AP1512A-K5G-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 fixed 50 kHz ±15% oscillator sets switching period and directly determines filter inductor/capacitor sizing.
It integrates a 3 A peak-current-rated N-channel MOSFET switch, thermal shutdown (150 °C typical), and cycle-by-cycle current limiting (3.2–6 A). The feedback pin monitors output via resistive divider (for adjustable versions) or is internally connected for fixed 5 V output-eliminating external resistor networks in this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% at 0.2–3 A load, 10–60 V input-ensures stable rail for microcontrollers and sensors without trimming. |
| Switching Frequency | 50 kHz ±15%-enables use of low-cost, low-ESR 47 µH inductors and reduces EMI compared to sub-100 kHz alternatives. |
| Input Voltage Range | 4.5 V to 60 V-supports wide-input industrial, automotive, and telecom power buses without pre-regulation. |
| Output Current Capability | Continuous 3 A (AP1512A version)-delivers full rated load without external pass transistor or parallel ICs. |
| Thermal Protection | Integrated thermal shutdown with automatic recovery-prevents latch-up during overload or poor heatsinking conditions. |
| Shutdown Quiescent Current | 350 µA at VIN = 60 V-enables ultra-low-power standby in battery-backed or energy-sensitive systems. |
| Efficiency | 80% at VIN = 30 V, VOUT = 5 V, IOUT = 3 A-balances conduction loss and switching loss for mid-power buck conversion. |
Pinout & Package
AP1512A-K5G-13 uses the TO263-5L surface-mount package with exposed metal tab (GND-connected) for thermal dissipation. Recommended PCB copper area ≥3 in² (2 oz) for junction-to-ambient θJA ≈23 °C/W.
| 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 power switch drain | Drives external catch diode and inductor; high dv/dt node-minimize trace area to reduce EMI coupling. |
| GND (Pin 3) | Power and signal ground | Common return for internal circuitry, switch source, and thermal tab-must connect to large copper pour. |
| FB (Pin 4) | Feedback input | Internally tied to 5 V reference-no external resistors required; unused in fixed-output K5G-13 variant. |
| SD (Pin 5) | Shutdown control input | Logic-compatible: <1.3 V = ON, >2.0 V = OFF; draws <10 µA-compatible with MCU GPIO without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3 A power switch | Eliminates external MOSFET and gate driver-reduces BOM count and layout complexity in compact 5 V supplies. |
| Internal frequency compensation | Enables stable loop response with only output capacitor ESR ≥10 mΩ-no external compensation network needed. |
| Thermal + current limiting protection | Prevents permanent damage under short-circuit, overtemperature, or excessive load-no external sensing circuitry required. |
| Logic-level ON/OFF control | Direct interface with 3.3 V/5 V MCUs-no pull-up/pull-down resistors or level translators needed for enable sequencing. |
| Lead-free, RoHS-compliant packaging | TO263-5L meets EU Directive 2002/95/EC-supports environmentally compliant manufacturing without process requalification. |
Applications
| Industrial Power Supply | Automotive Body Control Module |
|---|---|
|
Use Scenario: Primary 5 V rail generation from 12–48 V vehicle battery or factory bus. IC Role / Device Role / Timing Role: Step-down regulator providing clean, regulated 5 V for microcontroller, CAN transceiver, and sensor interfaces. Use Value: Withstands 60 V transients and delivers 3 A continuously-meets ISO 7637-2 pulse 5a requirements without upstream TVS. |
Use Scenario: On-board 5 V supply for door module, seat controller, or lighting ECU. IC Role / Device Role / Timing Role: Main DC/DC converter powering MCU, LIN transceiver, and LED drivers in space-constrained modules. Use Value: TO263 thermal pad enables direct mounting to metal chassis-replaces discrete FET+controller solutions with 40% smaller footprint. |
| Telecom Remote Radio Unit | Programmable Logic Controller I/O Module |
|
Use Scenario: Intermediate 5 V rail derived from 48 V PoE or -48 V telecom supply. IC Role / Device Role / Timing Role: Efficient buck stage converting -48 V (via inverting topology) or 48 V to isolated 5 V logic supply. Use Value: 50 kHz operation allows use of low-profile, high-saturation inductors-critical for height-limited RRH enclosures. |
Use Scenario: Field-side 5 V power for digital input/output conditioning circuits. IC Role / Device Role / Timing Role: Robust local regulator supplying isolated digital logic, optocoupler drivers, and ADC references. Use Value: Built-in current limit and thermal shutdown ensure safe operation during field wiring faults or ambient temperature excursions up to 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP1584EN-LF-Z (Monolithic Power) | 3 A, 1.5 MHz switching, requires external compensation, no integrated thermal shutdown. | Better efficiency above 1 A but higher EMI; needs careful layout and external fault protection. | Choose for higher-frequency, lower-ripple designs where board space permits added complexity. |
| LM2596S-5.0 (Texas Instruments) | 3 A, 150 kHz, external compensation, no logic-level shutdown, wider VIN (4.5–40 V). | Limited to 40 V input; lacks integrated SD pin logic interface-requires external transistor for MCU control. | Choose when legacy design reuse or TI ecosystem alignment outweighs need for integrated shutdown and thermal safety. |
Compared with MP1584EN-LF-Z and LM2596S-5.0, AP1512A-K5G-13 offers simpler implementation with built-in protection and logic-compatible enable, at the trade-off of lower switching frequency-making it optimal for cost-sensitive, thermally constrained, and safety-critical industrial applications.
Availability
AP1512A-K5G-13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and programmable logic controller I/O modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for AP1512A-K5G-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 devices for industrial, automotive, and consumer markets.
The AP1512/A series targets cost-effective, high-reliability buck conversion in space- and thermal-constrained environments-emphasizing integration, protection, and ease of qualification over ultra-high efficiency or ultra-low quiescent current.
FAQ
What is the maximum input voltage rating for AP1512A-K5G-13?
The absolute maximum input voltage is +63 V, with recommended operating range from +4.5 V to +60 V. Operation above 60 V risks exceeding internal transistor breakdown limits and invalidates thermal derating curves-designs must include input transient suppression if used in automotive or industrial environments with load-dump events.
Does AP1512A-K5G-13 require external compensation components?
No-AP1512A-K5G-13 features fully internal frequency compensation. The error amplifier and compensation network are integrated, eliminating external capacitors or resistors. Stability is guaranteed across all input voltages (4.5–60 V) and output loads (0–3 A) per the datasheet's tested conditions.
How does the shutdown (SD) pin function in AP1512A-K5G-13?
The SD pin enables logic-level control: pulling below 1.3 V (typical) turns the regulator ON; pulling above 2.0 V (typical) forces shutdown with 350 µA quiescent current. It accepts up to +40 V, allowing direct connection to higher-voltage control rails without clamping diodes or resistive dividers.
Can AP1512A-K5G-13 be used in negative-output configurations?
Yes-AP1512A-K5G-13 supports inverting buck-boost topology by grounding the OUTPUT pin and routing the inductor to VOUT. The datasheet includes a positive-to-negative converter application circuit using B360/B diode and 47 µH inductor, delivering regulated negative output with same 3 A capability and protection features.
AP1512A-K5G-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:
- -
- 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:
- Surface Mount
- Supplier Device Package:
- TO-263-5
AP1512A-K5G-13 FAQ
1.How can I place an order for AP1512A-K5G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1512A-K5G-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 AP1512A-K5G-13 reliable?
The price and inventory of AP1512A-K5G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1512A-K5G-13 is usually 5 days.
3.What payment methods are accepted for AP1512A-K5G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1512A-K5G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1512A-K5G-13?
AP1512A-K5G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1512A-K5G-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 AP1512A-K5G-13?
For technical support, including AP1512A-K5G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1512A-K5G-13 requirements.
6.How does Aetrix verify that AP1512A-K5G-13 is sourced from the original manufacturer or authorized distributors?
All AP1512A-K5G-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 AP1512A-K5G-13 meets industry standards.
7.What is the process for return or replacement of AP1512A-K5G-13?
All AP1512A-K5G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1512A-K5G-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 AP1512A-K5G-13 part is unused and in its original packaging.
Return procedure for AP1512A-K5G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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