My Inquiry
My Account
Diodes Incorporated AP1507-50D5-13
- Part No.:
- AP1507-50D5-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-6, DPAK (5 Leads + Tab)
- Datasheet:
-
AP1507-50D5-13.pdf
- Description:
- IC REG BUCK 5V 3A TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,683
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP1507-50D5-13 from Diodes Incorporated is a monolithic 150 kHz, 3A non-synchronous PWM buck DC/DC converter with fixed 5V output, integrated power switch, internal compensation, and thermal/current protection. It operates from 8–22V input, delivers ±4% output voltage accuracy at 3A load, and uses TO252-5 package for high-power density in space-constrained industrial and embedded power rails.
For engineers reviewing the AP1507-50D5-13 datasheet, AP1507-50D5-13 pinout, AP1507-50D5-13 application, or AP1507-50D5-13 equivalent, key selection criteria include its fixed 5V output, 150kHz switching frequency enabling compact LC filters, ON/OFF logic control via SD pin, built-in current limit (4.5A typ), and thermal shutdown-critical for reliable 3A step-down regulation in automotive body electronics and industrial HMIs.
Technical Context
The AP1507-50D5-13 implements voltage-mode PWM control with a 1.23V internal reference and 150kHz oscillator (±15%). Its feedback loop uses the FB pin to regulate output by comparing against the 1.23V reference, eliminating external compensation components. The internal 3A N-channel MOSFET switch and freewheeling diode drive path enable single-stage buck conversion without external transistors.
Protection circuitry includes cycle-by-cycle current limiting (triggered at 4.5A typical) and thermal shutdown at ~150°C junction temperature. When current limit activates and VFB drops below 0.5V, switching frequency reduces to 30kHz (typ) to limit power dissipation. Shutdown is asserted when SD pin voltage exceeds 2.0V, reducing quiescent current to 150µA (typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% over 0.2–3A load and 8–22V input-ensures stable logic rail without external resistor divider. |
| Switching Frequency | 150kHz ±15%-enables use of smaller 47µH inductors and low-ESR electrolytic output capacitors vs. 50kHz alternatives. |
| Max Output Current | 3A continuous-supports microcontroller, FPGA I/O, or sensor subsystems without derating at +85°C ambient with proper PCB copper area. |
| Input Voltage Range | 4.5V to 22V-covers 5V USB-powered systems, 12V automotive, and industrial 24V-derived rails with headroom for transients. |
| Efficiency | 80% at VIN=12V, VOUT=5V, IOUT=3A-minimizes thermal load in sealed enclosures; peak efficiency >85% at lighter loads. |
| Shutdown Quiescent Current | 150µA max-enables low-power sleep modes in battery-backed or energy-harvesting applications. |
| Thermal Resistance | θJA = 50°C/W (TO252-5 on 2cm² 2oz copper)-requires ≥0.8in² PCB copper pour under tab for full 3A operation at +85°C ambient. |
Pinout & Package
AP1507-50D5-13 is housed in a TO252-5 (D-Pak) surface-mount package with exposed metal tab electrically connected to GND for thermal and electrical grounding. The 5-pin layout supports high-current switching while minimizing board space.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Positive input supply | Accepts 4.5–22V; requires local 100µF low-ESR input capacitor to handle pulsed switch current and suppress transients. |
| 2 Output | Internal power switch drain | Swings between VIN–VSAT (~10.6V at 3A) and –0.5V; minimal copper area recommended to reduce EMI coupling to sensitive analog traces. |
| 3 GND | Power and signal ground | Common return for IC bias, feedback, and shutdown; must be low-impedance connection to PCB ground plane and thermal pad. |
| 4 FB | Feedback voltage sense | Monitors output via resistive divider (not needed for fixed 5V version); internal 1.23V reference enables precise regulation without external components. |
| 5 SD | Shutdown control input | Logic-level interface: <1.3V = ON, >2.0V = OFF; compatible with 3.3V/5V GPIO; pulls to GND if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3A power switch | Eliminates external MOSFET and gate driver, reducing BOM count and layout complexity for 5V/3A point-of-load conversion. |
| Internal compensation network | Enables stable regulation with no external compensation components-reduces design iteration time and improves production yield. |
| Thermal shutdown + current limit | Protects against sustained overload or poor heatsinking; automatic recovery after fault removal ensures robust field operation. |
| ON/OFF logic control (SD pin) | Supports system-level power sequencing and low-power sleep states with µA-level standby current-no external pull-up required. |
| RoHS-compliant, halogen-free TO252-5 | Meets automotive and industrial environmental standards; metal tab provides direct thermal path to PCB copper for efficient heat transfer. |
Applications
| Industrial PLC I/O Power | Automotive Body Control Module |
|---|---|
|
Use Scenario: Powering isolated digital I/O channels (24V-to-5V conversion) in programmable logic controllers with tight thermal constraints. IC Role / Device Role / Timing Role: Primary 5V buck regulator supplying microcontroller peripherals, optocouplers, and level-shifters. Use Value: 3A capability supports up to 12 parallel I/O drivers; 150kHz switching allows compact 47µH inductor and avoids AM radio band interference. |
Use Scenario: Generating 5V rail for door module microcontrollers, LED drivers, and LIN transceivers in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Main 5V DC/DC converter downstream of automotive-grade input filter and TVS protection. Use Value: Wide 8–22V input range accommodates cold-crank (6.5V) and load-dump (28V) events; thermal shutdown prevents failure during under-hood temperature excursions. |
| Embedded HMI Display Backlight | Network Router PoE Auxiliary Rail |
|
Use Scenario: Providing regulated 5V for TFT-LCD backlight drivers and touch controller in medical or factory-floor HMIs. IC Role / Device Role / Timing Role: High-current intermediate rail generator converting 12V system power to clean 5V for analog front-end circuits. Use Value: ±4% output tolerance ensures consistent LED brightness; low 150µA shutdown current extends battery backup runtime during display sleep. |
Use Scenario: Deriving 5V auxiliary power from 48V PoE midspan or endpoint supplies for router control logic and USB ports. IC Role / Device Role / Timing Role: Secondary buck stage stepping down PoE-derived 12V or 24V intermediate bus to 5V system rail. Use Value: Integrated switch handles 3A peak loads during USB device enumeration; TO252-5 package simplifies thermal management on dense PoE PCBs. |
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 |
|---|---|---|---|
| LM2596S-5.0/NOPB | 3A adjustable/fixed buck; 150kHz; requires external compensation; higher IQ (5mA vs. 10mA active, 150µA standby) | Wider input range (4.5–40V); less integrated (needs external diode, compensation) | Choose for legacy designs requiring TI's long-term availability or compatibility with existing LM2596 layouts. |
| MP1584EN-LF-Z | 3A fixed 5V buck; 1.5MHz switching; requires external compensation; lower IQ (2.5mA active, 10µA standby) | Higher frequency enables smaller inductors (10µH typical); tighter output tolerance (±2%) | Choose when board space is critical and 1.5MHz EMI can be filtered; verify thermal performance at 3A with MP1584's smaller SO8EP package. |
Compared with LM2596S-5.0/NOPB and MP1584EN-LF-Z, AP1507-50D5-13 offers superior thermal performance via TO252-5 tab grounding, eliminates external compensation, and provides simpler layout-but trades off higher quiescent current than MP1584 and narrower input range than LM2596.
Availability
AP1507-50D5-13 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, embedded HMI displays, and PoE-powered networking equipment requiring stable component supply and long-lifecycle support.
Supply support for AP1507-50D5-13 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 AP1507 series targets cost-sensitive, high-reliability DC/DC conversion in industrial and automotive environments-designed for simplicity, thermal robustness, and minimal external component count in fixed-output buck topologies.
FAQ
What is the minimum input voltage required for AP1507-50D5-13 to regulate 5V output at 3A?
The datasheet specifies a minimum operating voltage of 4.5V, but for stable 5V regulation at full 3A load, VIN must be ≥8V per Recommended Operating Conditions. Below 8V, dropout occurs due to the internal switch saturation voltage (~1.4V at 3A), causing unregulated output and potential thermal stress.
Can AP1507-50D5-13 be used in adjustable-output configurations?
No-AP1507-50D5-13 is factory-trimmed for fixed 5.0V output only. The "50" in the part number denotes the 5V version; adjustable variants use suffix "ADJ" (e.g., AP1507-D5-13). The FB pin is internally connected to the 1.23V reference and not accessible for external resistor programming in this variant.
How does the current-limit protection behave under sustained overload?
When output current exceeds ~4.5A, the AP1507 enters hiccup mode: switching ceases until VFB recovers above 0.5V, then resumes at reduced 30kHz frequency. This limits average power dissipation and prevents thermal runaway-unlike constant-frequency current limiting, which would overheat the die without adequate heatsinking.
What PCB layout practices are critical for thermal performance at 3A continuous load?
A minimum 0.8in² (5.2cm²) 2oz copper pour under the TO252-5 tab is mandatory; ideal layout uses ≥2in² with thermal vias to inner ground planes. Input/output traces must be ≥1.5mm wide, and the Output pin must avoid large copper areas to minimize EMI. The GND pin and tab must connect directly to the main ground plane with multiple vias.
AP1507-50D5-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-6, DPAK (5 Leads + Tab)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 22V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-5
AP1507-50D5-13 FAQ
1.How can I place an order for AP1507-50D5-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1507-50D5-13 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 AP1507-50D5-13 reliable?
The price and inventory of AP1507-50D5-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1507-50D5-13 is usually 5 days.
3.What payment methods are accepted for AP1507-50D5-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1507-50D5-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1507-50D5-13?
AP1507-50D5-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1507-50D5-13 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 AP1507-50D5-13?
For technical support, including AP1507-50D5-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1507-50D5-13 requirements.
6.How does Aetrix verify that AP1507-50D5-13 is sourced from the original manufacturer or authorized distributors?
All AP1507-50D5-13 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 AP1507-50D5-13 meets industry standards.
7.What is the process for return or replacement of AP1507-50D5-13?
All AP1507-50D5-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1507-50D5-13, 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 AP1507-50D5-13 part is unused and in its original packaging.
Return procedure for AP1507-50D5-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1507-50D5-13 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…
