My Inquiry
My Account
Diodes Incorporated AP1501-K5L-13
- Part No.:
- AP1501-K5L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
AP1501-K5L-13.pdf
- Description:
- IC REG BUCK ADJ 3A TO263-5L
- Quantity:
- Payment:
- Shipping:
Inventory:3,035
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP1501-K5L-13 from Diodes Incorporated is a non-synchronous PWM buck DC/DC converter in TO263-5 package, delivering 3A output current at fixed 5V output, operating at 150kHz ±15% switching frequency with integrated thermal shutdown and current-limit protection. It supports input voltages up to 40V and features ON/OFF logic control for standby mode, enabling use in industrial power rails and embedded system point-of-load regulation.
For engineers reviewing the AP1501-K5L-13 datasheet, AP1501-K5L-13 pinout, AP1501-K5L-13 application, or AP1501-K5L-13 equivalent, key selection criteria include its fixed 5V output accuracy (±4%), built-in switch saturation voltage (1.4V typ. @ 3A), thermal resistance (θJA = 37°C/W), and compatibility with standard 47µH inductors and Schottky catch diodes like B340A.
Technical Context
The AP1501-K5L-13 implements voltage-mode PWM control with internal 1.235V reference and 150kHz oscillator, requiring no external compensation network due to on-chip frequency compensation. Its feedback loop monitors output via FB pin, comparing against internal reference to adjust duty cycle.
It integrates a 3A N-channel MOSFET switch with 1.4V typical saturation voltage, operates across 4.5–40V input range, and provides logic-level ON/OFF control (VIL = 0.6V, VIH = 2.0V) with 250µA max standby current at VIN = 40V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% under 0.2–3A load and 7–40V input |
| Switching Frequency | 150kHz ±15%; enables use of compact 47µH inductors and low-ESR output capacitors |
| Max Output Current | 3A continuous; limited by internal current sense and thermal design (TJ ≤ 125°C) |
| Input Voltage Range | 4.5V to 40V; supports wide-input industrial and automotive battery-supplied systems |
| Quiescent Current | 10mA typ. in active mode; drops to 250µA in shutdown (ON/OFF pin high) |
| Thermal Resistance | θJA = 37°C/W (TO263-5, 3in² copper); requires ≥0.4in² PCB copper for safe 3A operation |
| Protection Features | Thermal shutdown (TJ > 150°C) and peak current limit (4.0A typ.) prevent device damage |
Pinout & Package
AP1501-K5L-13 uses the TO263-5 surface-mount package with exposed metal tab connected to GND for thermal conduction. The 5-pin layout is optimized for high-current switching with minimal parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – VIN | Power input supply | Accepts 4.5–40V DC; requires local 100µF+ low-ESR input capacitor to handle pulsed switch current |
| 2 – Output | Internal switch drain node | Swings between VIN–1.4V (ON) and ~–0.5V (OFF); connects to inductor input; avoid large copper pour |
| 3 – GND | Power and signal ground | Common return for IC core, feedback, and shutdown; tied to metal tab for thermal path |
| 4 – FB | Feedback input | Monitors regulated output via resistor divider; 1.23V reference sets 5V output (R1/R2 = 3.07kΩ/1kΩ) |
| 5 – SD | Shutdown control | Logic-compatible input: <0.6V = ON, >2.0V = OFF; draws ≤25µA; can be tied to GND for always-on operation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3A Power Switch | Eliminates external MOSFET and driver, reducing BOM count and layout complexity for 5V/3A step-down |
| Fixed 5V Output Accuracy | ±4% over full temperature and load range ensures stable microcontroller or FPGA core rail without post-regulation |
| 150kHz Fixed Frequency | Enables predictable EMI filtering and consistent inductor sizing (e.g., 47µH) across production batches |
| Low Standby Current | 250µA max at VIN = 40V allows battery-backed systems to maintain >1-year shelf life in shutdown |
| Robust Protection Suite | Auto-recovering thermal shutdown and cycle-by-cycle current limit prevent latch-up during overload or short-circuit |
Applications
| Industrial PLC I/O Module Power | Embedded Camera Sensor Rail |
|---|---|
|
Use Scenario: Powering isolated 5V digital I/O banks in programmable logic controllers with 24V DC field bus input. IC Role / Device Role / Timing Role: Primary buck regulator converting 24V to clean 5V for optocoupler drivers and logic buffers. Use Value: Delivers 3A peak per module with ±4% regulation, eliminating need for secondary LDOs and reducing board area by 35% vs discrete solutions. |
Use Scenario: Supplying 5V to CMOS image sensors and ISP processors in compact surveillance cameras. IC Role / Device Role / Timing Role: Point-of-load DC/DC converter placed adjacent to sensor ASIC to minimize noise coupling. Use Value: 150kHz switching avoids interference with video clock harmonics; TO263-5 thermal pad enables passive cooling in sealed enclosures. |
| POS Terminal Main Board | Smart Meter Communication Module |
|
Use Scenario: Generating 5V for ARM-based main controller, display interface, and USB peripheral ports in retail point-of-sale terminals. IC Role / Device Role / Timing Role: Central power stage supporting dynamic load steps from 100mA (idle) to 2.8A (print + display backlight). Use Value: Built-in current limit prevents brownout during motor-driven receipt printing; ON/OFF pin synchronizes with system sleep states. |
Use Scenario: Providing regulated 5V to NB-IoT or RF modules in utility smart meters operating from 36–48V DC battery or transformer input. IC Role / Device Role / Timing Role: High-input-voltage buck converter enabling direct connection to meter's primary power rail. Use Value: 40V absolute max input rating accommodates transient surges; green (halogen-free) packaging meets IEC 62368-1 compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP1501-50K5G-13 | Same silicon, identical electrical specs; green (halogen/antimony-free) variant replacing lead-free-only K5L | No functional difference; fully compatible in layout, thermal, and performance | Select for new designs requiring RoHS 2 + halogen-free compliance per IEC 61249-2-21 |
| MP1584EN-LF-Z | Higher 1.5MHz switching frequency, lower quiescent current (2.5mA), but requires external MOSFETs and compensation | Better suited for space-constrained designs needing smaller inductors; lacks integrated switch | Choose only if board area is critical and design team has expertise in external gate drive layout and loop compensation |
Compared with AP1501-K5L-13, AP1501-50K5G-13 offers identical performance with enhanced environmental compliance, while MP1584EN-LF-Z trades integration for higher frequency and lower IQ - making the former a drop-in upgrade and the latter a layout-intensive alternative for ultra-compact applications.
Availability
AP1501-K5L-13 is available at Aetrix Electronics and suitable for industrial PLCs, embedded vision systems, POS terminals, and smart metering applications requiring stable component supply and long-term manufacturability.
Supply support for AP1501-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 power management, signal integrity, and protection devices for industrial, computing, and consumer markets.
The AP1501 belongs to Diodes' high-current DC/DC converter product line, designed specifically for cost-sensitive, high-reliability step-down applications where integration, thermal robustness, and fixed-output simplicity are prioritized over programmability.
FAQ
What is the recommended input capacitor for AP1501-K5L-13 in a 24V-to-5V/3A application?
A minimum 100µF low-ESR electrolytic or polymer capacitor rated ≥50V is required at VIN, placed within 5mm of pins 1 and 3. Add a 100nF ceramic capacitor in parallel for high-frequency decoupling. This combination suppresses input ripple and handles peak switch currents without exceeding 50mV P-P input voltage sag.
Can AP1501-K5L-13 be used with an adjustable output configuration?
No - AP1501-K5L-13 is factory-trimmed for fixed 5.0V output. Only part numbers ending in "-K5G-13" with suffix "50" (e.g., AP1501-50K5G-13) or "ADJ" (e.g., AP1501-K5G-13) support adjustable operation. The -K5L-13 variant lacks internal resistor divider and cannot be reconfigured.
What is the maximum ambient temperature for continuous 3A operation in TO263-5 package?
At 3A load and 24V input, the AP1501-K5L-13 reaches thermal shutdown at ~65°C ambient when mounted on 3in² 1oz copper. With 2oz copper and ≥2in² area, it sustains 3A up to 75°C ambient. Forced airflow or thermal vias under the tab extend this further.
Does AP1501-K5L-13 require an external catch diode, and what type is recommended?
Yes - a Schottky diode is mandatory across the inductor. Diodes Incorporated recommends B340A (40V, 3A, 0.5V VF) or PDS340 series. The diode must handle 3A average forward current and 40V reverse voltage; placement must minimize loop area with the Output and GND pins to reduce EMI.
AP1501-K5L-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Cut Tape (CT)
- 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
AP1501-K5L-13 FAQ
1.How can I place an order for AP1501-K5L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1501-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 AP1501-K5L-13 reliable?
The price and inventory of AP1501-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 AP1501-K5L-13 is usually 5 days.
3.What payment methods are accepted for AP1501-K5L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1501-K5L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1501-K5L-13?
AP1501-K5L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1501-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 AP1501-K5L-13?
For technical support, including AP1501-K5L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1501-K5L-13 requirements.
6.How does Aetrix verify that AP1501-K5L-13 is sourced from the original manufacturer or authorized distributors?
All AP1501-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 AP1501-K5L-13 meets industry standards.
7.What is the process for return or replacement of AP1501-K5L-13?
All AP1501-K5L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1501-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 AP1501-K5L-13 part is unused and in its original packaging.
Return procedure for AP1501-K5L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1501-K5L-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…
