My Inquiry
My Account
Diodes Incorporated AP1501-K5G-13
- Part No.:
- AP1501-K5G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1501-K5G-13.pdf
- Description:
- IC REG BUCK ADJ 3A TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,578
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP1501-K5G-13 from Diodes Incorporated is an adjustable-output, non-synchronous PWM buck DC/DC converter delivering up to 3A continuous load current with 150kHz fixed switching frequency, integrated 3A power switch, and internal compensation. It operates from 4.5V to 40V input, regulates output from 1.23V to 37V+4%, and features thermal shutdown, current limiting, and logic-controlled ON/OFF shutdown-used in industrial power supplies and embedded system point-of-load regulation.
For engineers reviewing the AP1501-K5G-13 datasheet, AP1501-K5G-13 pinout, AP1501-K5G-13 application, or AP1501-K5G-13 equivalent, key selection criteria include its TO263-5 package thermal performance, feedback voltage tolerance (±1.5% at 1.23V), duty-cycle range (0–100%), and compatibility with external Schottky catch diodes like B340A in cost-sensitive 3A step-down designs.
Technical Context
The AP1501-K5G-13 implements voltage-mode PWM control with a built-in 1.235V reference and error amplifier, enabling stable line/load regulation without external compensation components. Its oscillator delivers 127–173kHz (typ. 150kHz) across temperature, and the internal 3A N-channel MOSFET switch exhibits 1.3–1.4V saturation voltage at full load.
Shutdown is asserted by pulling the SD pin above 2.0V (VIH), reducing quiescent current to 150–350µA; release occurs below 1.3V (VIL). Feedback bias current is tightly specified at 40–60nA (typ.), ensuring minimal voltage divider loading for precise output programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports high-current PoL conversion without external driver stages |
| Input Voltage Range | 4.5V to 40V - accommodates wide-input industrial and automotive battery-supplied systems |
| Feedback Reference | 1.23V ±1.5% - enables accurate adjustable output from 1.23V to 37V+4% using two external resistors |
| Switching Frequency | 127–173kHz (typ. 150kHz) - balances efficiency and EMI while allowing use of low-cost, low-ESR 33–47µH inductors |
| Thermal Protection | Integrated thermal shutdown - disables output when junction temperature exceeds ~150°C, preventing permanent damage |
| Shutdown Quiescent Current | 150–350µA at VIN=40V - ensures ultra-low standby power in battery-backed or energy-conscious applications |
| Current Limit Threshold | 3.6–5.5A peak - provides robust overcurrent protection without requiring external sensing resistors |
Pinout & Package
AP1501-K5G-13 is housed in a TO263-5 surface-mount package with exposed metal tab electrically connected to GND for enhanced thermal dissipation. The tab must be soldered to ≥0.4 in² (ideally ≥2 in²) of 2 oz copper on the PCB to maintain safe junction temperature under 3A load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VIN | Positive input supply | Accepts 4.5–40V DC; requires local ceramic bypass capacitor to handle high di/dt switching currents |
| 2: Output | Internal power switch drain | Swings between (VIN – VSAT) and ~–0.5V; connects to inductor input-minimize copper area to reduce EMI coupling |
| 3: GND | Power and signal ground | Common return for VIN, FB, SD, and thermal path via metal tab; must be low-impedance connection to PCB ground plane |
| 4: FB | Voltage feedback input | Senses output via resistor divider; 40–60nA bias current allows high-value dividers (e.g., 1kΩ/10kΩ) without accuracy loss |
| 5: SD | Shutdown control input | Logic-compatible enable/disable: <1.3V = ON, >2.0V = OFF; open or grounded = default ON operation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3A power switch | Eliminates need for external MOSFET driver and discrete switch, reducing BOM count and layout complexity |
| Internal compensation network | Enables stable regulation with no external compensation components-simplifies design and improves reliability |
| Adjustable output (1.23V–37V+4%) | Supports flexible PoL requirements across diverse systems using only two external resistors and one capacitor |
| Thermal shutdown + current limit | Hardware-level protection prevents failure during overload, short-circuit, or poor heatsinking conditions |
| TO263-5 lead-free/Green package | RoHS 3 compliant, halogen- and antimony-free; meets IEC 61249-2-21 for environmentally constrained applications |
Applications
| Industrial PLC Power Supply | Embedded System Point-of-Load |
|---|---|
|
Use Scenario: Providing regulated 5V/3A power to microcontroller, FPGA, and peripheral ICs on a DIN-rail mounted programmable logic controller board. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator converting 24V DC bus to stable 5V rail; operates continuously at full load with 80% efficiency. Use Value: Integrated switch and compensation reduce component count by ≥4 vs. controller+MOSFET solutions, lowering assembly cost and improving long-term reliability. |
Use Scenario: Generating 3.3V/3A from a 12V intermediate rail for ARM-based edge computing modules in smart sensors. IC Role / Device Role / Timing Role: Adjustable buck converter configured for 3.3V output; uses 150kHz switching to avoid AM radio band interference. Use Value: Low 150µA standby current extends battery life in sleep modes; SD pin enables firmware-controlled power sequencing. |
| Automotive Body Control Module | Test Equipment DC Power Rail |
|
Use Scenario: Regulating 12V vehicle battery to 5V for CAN transceivers and microcontrollers in body electronics units. IC Role / Device Role / Timing Role: Input-capable up to 40V handles load-dump transients; thermal shutdown protects against enclosure overheating. Use Value: TO263-5 package's low θJA (37°C/W) enables conduction cooling without heatsink-critical for compact sealed enclosures. |
Use Scenario: Delivering stable 15V/3A output in benchtop power analyzers where low-noise, repeatable voltage is essential. IC Role / Device Role / Timing Role: Fixed-frequency PWM regulator with tight output tolerance (±4%); used with low-ESR polymer capacitors for low ripple. Use Value: Built-in current limit prevents damage during output short testing; shutdown pin allows remote power cycling via MCU GPIO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2596S-ADJ | 150kHz fixed frequency, 3A rating, but requires external compensation and has higher VSAT (~1.8V) | Larger solution size due to external compensation network; lower efficiency at high IOUT | Prefer AP1501-K5G-13 when board space and thermal performance are critical; LM2596S-ADJ suits legacy designs with existing compensation layouts |
| MP1584EN-LF-Z | 1.5MHz switching, 3A, integrated compensation, but max input only 28V and no thermal shutdown flag | Better transient response and smaller magnetics, but unsuitable for 40V industrial inputs or thermal-fault monitoring | Choose AP1501-K5G-13 for 40V input capability and hardware thermal protection; MP1584EN-LF-Z fits compact, low-input-voltage applications |
Compared with LM2596S-ADJ and MP1584EN-LF-Z, AP1501-K5G-13 uniquely combines 40V input tolerance, integrated thermal shutdown, and TO263-5 thermal performance-making it optimal for ruggedized 3A buck designs where reliability under overtemperature and overvoltage stress is mandatory.
Availability
AP1501-K5G-13 is available at Aetrix Electronics and suitable for industrial PLC power supplies, embedded system point-of-load regulation, automotive body control modules, and test equipment DC power rails requiring stable component supply, RoHS 3 compliance, and long-lifecycle support.
Supply support for AP1501-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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.
The AP1501 belongs to Diodes' monolithic buck converter product line, designed specifically for cost-sensitive, high-current DC/DC applications where integration, thermal robustness, and wide-input operation are prioritized over ultra-high switching frequencies.
FAQ
What is the minimum input voltage required for AP1501-K5G-13 to regulate a 3.3V output?
The AP1501-K5G-13 requires a minimum input voltage of 4.5V to maintain regulation at any output voltage, including 3.3V. This is specified in the Electrical Characteristics table under "Minimum Operating Supply Voltage" for the adjustable version with VOUT=1.23V and ILOAD=120mA, and confirmed by functional block diagram constraints on the internal reference and driver circuitry.
Can AP1501-K5G-13 be used in synchronous rectification configurations?
No. AP1501-K5G-13 is a non-synchronous buck converter with a single internal N-channel MOSFET switch and requires an external Schottky catch diode (e.g., B340A) on the output node. It lacks a second integrated switch or gate drive outputs needed for synchronous rectification, and its control architecture does not support external synchronous FET timing.
How does the feedback pin bias current affect output voltage accuracy?
The FB pin draws 40–60nA (typ.) bias current, which flows through the upper feedback resistor and creates an offset error. For a 1.23V reference, using R1=1.2kΩ and R2=10kΩ yields ~120mV drop across R1 due to bias current-reducing output by ~1%. Accuracy is preserved by selecting lower resistor values (e.g., R1=300Ω, R2=2.5kΩ) or using the AP1501-50K5G-13 fixed 5V variant where feedback is internal.
Is AP1501-K5G-13 qualified for automotive applications per AEC-Q100?
No. While AP1501-K5G-13 is manufactured in IATF 16949-certified facilities and supports automotive voltage ranges, it is not AEC-Q100 qualified. Diodes explicitly states that automotive-qualified versions require separate change control, PPAP capability, and specific qualification testing-none of which apply to the standard AP1501-K5G-13 part number listed as Active in the Ordering Information table.
AP1501-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:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 37V
- Current - Output:
- 3A
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263-5
AP1501-K5G-13 FAQ
1.How can I place an order for AP1501-K5G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1501-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 AP1501-K5G-13 reliable?
The price and inventory of AP1501-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 AP1501-K5G-13 is usually 5 days.
3.What payment methods are accepted for AP1501-K5G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1501-K5G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1501-K5G-13?
AP1501-K5G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1501-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 AP1501-K5G-13?
For technical support, including AP1501-K5G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1501-K5G-13 requirements.
6.How does Aetrix verify that AP1501-K5G-13 is sourced from the original manufacturer or authorized distributors?
All AP1501-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 AP1501-K5G-13 meets industry standards.
7.What is the process for return or replacement of AP1501-K5G-13?
All AP1501-K5G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1501-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 AP1501-K5G-13 part is unused and in its original packaging.
Return procedure for AP1501-K5G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1501-K5G-13 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
