Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Diodes Incorporated AP65452SP-13

Name: AP65452SP-13
Brand: Diodes Incorporated
SKU: AP65452SP-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AP65452SP-13

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: AP65452SP-13.pdf

Description:: IC REG BUCK ADJ 4A 8SO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,543

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AP65452SP-13 from Diodes Incorporated is a synchronous step-down DC-DC converter IC with adaptive constant-on-time (COT) control, delivering 4A continuous output current, 0.76V–6V adjustable output voltage, and 650kHz pseudo-fixed switching frequency. It integrates 65mΩ high-side and 36mΩ low-side MOSFETs in an SO-8EP package, designed for stable low-voltage regulation in flat-screen TV power rails.

For engineers reviewing the AP65452SP-13 datasheet, AP65452SP-13 pinout, AP65452SP-13 application, or AP65452SP-13 equivalent, key selection criteria include its adaptive COT transient response, dual-MOSFET R_DS(on) values, programmable soft-start via external capacitor, thermal shutdown at 160°C, and compatibility with ceramic or polymer output capacitors.

Technical Context

The AP65452SP-13 implements adaptive COT control-on-time is inversely proportional to input voltage and directly proportional to output voltage-enabling pseudo-constant 650kHz operation without an external oscillator. Its feedback loop references a precise 0.765V internal bandgap (±1.5% over temperature), and it senses inductor current during low-side conduction for cycle-by-cycle overcurrent protection.

It features pre-biased start-up, UVLO with 3.45V turn-on threshold and 320mV hysteresis, and a dedicated VREG5 5V LDO (±6% regulation, 110mA source capability) for biasing external circuitry. The SO-8EP thermal pad is electrically connected to GND and supports θ_JA = 39.4°C/W under standard 2"×2" 2oz FR-4 layout.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5V to 18V - supports 5V, 12V, and 15V intermediate bus architectures without external regulators.
Output Voltage Range	0.76V to 6V - adjustable via resistive divider; enables direct powering of FPGA core (1.05V), DDR3 (1.5V), and USB PHY (3.3V) rails.
Continuous Output Current	4A - sufficient for SoC or GPU auxiliary supplies in gaming consoles and set-top boxes.
Switching Frequency	650kHz - balances efficiency and EMI filtering component size; no external clock required.
High-Side R_DS(on)	75mΩ max - reduces conduction loss at 4A load; contributes to >92% peak efficiency at 12V_IN/1.05V_OUT.
Low-Side R_DS(on)	36mΩ max - enables synchronous rectification with minimal body-diode conduction loss during dead time.
Thermal Shutdown	160°C with 30°C hysteresis - protects against sustained overload or poor PCB thermal design; auto-recovery at ~130°C.
Feedback Reference	0.765V ±1.5% - ensures tight DC output accuracy (<±1%) across line, load, and temperature.

Pinout & Package

AP65452SP-13 is housed in an SO-8EP (exposed pad) thermally enhanced package. The exposed pad must be soldered to a GND plane with ≥6 thermal vias for effective heat dissipation. Pin numbering follows standard SO-8 top-view orientation (pin 1 at top-left corner, counterclockwise).

Pin/Terminal	Circuit Role	Design Meaning
EN (Pin 1)	Enable control input	Digital logic-level input; ≥1.9V enables regulator; ≤0.6V disables; internal pull-down; 100kΩ pull-up to VIN enables automatic startup.
FB (Pin 2)	Feedback sensing node	Connects to resistor divider midpoint; regulates output by comparing to 0.765V reference; bias current <±0.1μA minimizes divider error.
VREG5 (Pin 3)	Internal 5V LDO output	Supplies gate drive and internal logic; requires 1μF ceramic cap to GND; inactive when EN = low.
SS (Pin 4)	Soft-start timing control	Accepts external capacitor to GND; 6μA internal current source sets ramp time; enables controlled V_OUT rise without inrush.
GND (Pin 5)	Main power ground	Reference for all analog and power circuits; connects to exposed thermal pad; must be low-impedance plane.
SW (Pin 6)	Power switching node	Drives external LC filter; connects to inductor and bootstrap capacitor; high dI/dt path requiring short, wide trace.
BS (Pin 7)	Bootstrap supply terminal	Connects 0.1μF ceramic cap to SW; generates gate drive voltage for high-side NMOS; critical for proper high-side turn-on.
VIN (Pin 8)	Main input supply	Accepts 4.5–18V; requires local 10–22μF low-ESR ceramic input capacitor; high RMS current path.

Key Features

Feature	Design Value
Adaptive COT Control	Eliminates need for external compensation network; stabilizes loop with ceramic output caps (no ESR dependency).
Synchronous Dual MOSFETs	Integrated 65mΩ/36mΩ switches reduce conduction loss and eliminate external Schottky diode.
Programmable Soft-Start	External SS capacitor sets ramp time; prevents output overshoot and inrush current during power-up.
Pre-Biased Start-Up	Allows safe startup into pre-charged output rail-essential for hot-swap and multi-rail sequencing systems.
Comprehensive Protection	Includes UVLO (3.45V trip), cycle-by-cycle OCP, thermal shutdown (160°C), and auto-recovery behavior.
Green Compliance	Fully RoHS-compliant, lead-free, halogen- and antimony-free per Diodes Inc. definition (<900ppm Br/Cl, <1000ppm Sb).

Applications

Gaming Console Power Supply

Flat-Screen TV Core Rail

Use Scenario: Powers GPU or application processor core in compact gaming hardware with tight thermal constraints.

IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 1.05V/4A with fast transient response to dynamic load steps.

Use Value: Adaptive COT maintains regulation during rapid CPU/GPU load changes; SO-8EP package enables dense board layout.

Use Scenario: Supplies main SoC core voltage in 4K UHD TV platforms where EMI and efficiency are critical.

IC Role / Device Role / Timing Role: High-efficiency step-down converter operating from 12V intermediate bus to 1.2V–1.5V SoC rail.

Use Value: 650kHz switching allows small 1.5μH inductor and 22μF ceramic output cap; low R_DS(on) minimizes thermal rise.

Set-Top Box FPGA Supply

Home Audio DSP Rail

Use Scenario: Generates configurable 1.8V or 2.5V rail for FPGA I/O banks or configuration logic in streaming devices.

IC Role / Device Role / Timing Role: Adjustable-output buck converter supporting multiple voltage configurations via FB divider.

Use Value: 0.76V–6V range covers common FPGA voltages; programmable soft-start prevents configuration corruption during power-up.

Use Scenario: Provides clean, low-noise 3.3V supply for audio DSP and codec in premium soundbars and AV receivers.

IC Role / Device Role / Timing Role: Low-ripple DC-DC regulator with tight feedback accuracy and low EMI signature.

Use Value: Ceramic-cap-compatible stability and <1% output error ensure consistent ADC/DAC performance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP2315DJ-LF-Z (Monolithic Power)	Fixed 3.3V output; 3A rating; 500kHz fixed-frequency PWM; no adaptive COT.	Limited to single-output use; lacks programmable soft-start and pre-bias support.	Choose for cost-sensitive, fixed-voltage designs where transient response is less critical.
RT7295BGJ8F (Richtek)	4A rating; 600kHz; COT control; but requires external bootstrap diode and lacks VREG5 LDO.	No integrated 5V bias rail; higher BOM count; less robust under light-load conditions.	Choose only if VREG5 functionality is not needed and board space permits discrete bootstrap diode.

Compared with MP2315DJ-LF-Z and RT7295BGJ8F, the AP65452SP-13 uniquely combines adaptive COT, integrated VREG5, pre-biased start-up, and SO-8EP thermal performance-making it optimal for compact, high-transient consumer electronics where reliability and layout simplicity are prioritized.

Availability

AP65452SP-13 is available at Aetrix Electronics and suitable for flat-screen TV sets, gaming consoles, and set-top boxes requiring stable component supply, long-term production continuity, and RoHS-compliant sourcing.

Supply support for AP65452SP-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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

The AP65452 belongs to Diodes' high-efficiency DC-DC converter product line, engineered specifically for consumer electronics power management-emphasizing compact footprint, fast transient response, and seamless integration with ceramic capacitors.

FAQ

What is the recommended input capacitor for AP65452SP-13?

A minimum 10μF X5R/X7R ceramic capacitor rated for ≥25V should be placed within 3mm of VIN and GND pins. For 12V input, a 22μF/25V part is typical. The capacitor must handle ≥2A RMS ripple current and exhibit <10mΩ ESR to minimize input voltage droop and switching noise.

Does AP65452SP-13 support forced PWM mode?

No-AP65452SP-13 operates exclusively in adaptive constant-on-time (COT) mode and does not offer forced PWM, diode emulation, or pulse-skipping modes. Its control architecture inherently transitions between light-load and heavy-load conditions without mode switching, maintaining stability across full load range with ceramic output capacitors.

Can AP65452SP-13 be used with tantalum output capacitors?

Tantalum capacitors are not recommended. The AP65452SP-13's adaptive COT loop is optimized for low-ESR ceramic or polymer (POSCAP/SP-CAP) capacitors. Tantalum units risk surge-current failure due to insufficient surge rating and lack of ESR damping, potentially triggering false OCP events or degrading loop stability.

Is AP65452SP-13 pin-compatible with AP65450SP-13?

Yes-AP65452SP-13 and AP65450SP-13 share identical SO-8EP pinout, electrical interface, and functional block diagram. However, AP65452 offers improved thermal performance (lower R_DS(on)) and tighter feedback reference (0.765V vs. 0.76V), while AP65450 is marked "Not Recommended for New Design" per Diodes' documentation.

AP65452SP-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

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):: 18V

Voltage - Output (Min/Fixed):: 0.76V

Voltage - Output (Max):: 6V

Current - Output:: 4A

Frequency - Switching:: 650kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO-EP

AP65452SP-13 FAQ

1.How can I place an order for AP65452SP-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP65452SP-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 AP65452SP-13 reliable?

The price and inventory of AP65452SP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP65452SP-13 is usually 5 days.

3.What payment methods are accepted for AP65452SP-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP65452SP-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP65452SP-13?

AP65452SP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP65452SP-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 AP65452SP-13?

For technical support, including AP65452SP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP65452SP-13 requirements.

6.How does Aetrix verify that AP65452SP-13 is sourced from the original manufacturer or authorized distributors?

All AP65452SP-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 AP65452SP-13 meets industry standards.

7.What is the process for return or replacement of AP65452SP-13?

All AP65452SP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP65452SP-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 AP65452SP-13 part is unused and in its original packaging.

Return procedure for AP65452SP-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…