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 AP65200FK-7

Name: AP65200FK-7
Brand: Diodes Incorporated
SKU: AP65200FK-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AP65200FK-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 10-UFDFN Exposed Pad

Datasheet:: AP65200FK-7.pdf

Description:: IC REG BUCK ADJ 2A U-DFN2626-10

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,484

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

Product details

Overview

AP65200FK-7 from Diodes Incorporated is a 340 kHz external-compensated synchronous DC/DC buck converter with integrated 130 mΩ high- and low-side MOSFETs, delivering up to 2 A continuous output current at up to 95% efficiency across 4.7–18 V input and 0.925–16 V adjustable output. It implements automatic light-load efficiency improvement and current-mode control for fast transient response in FPGA, DSP, and ASIC power rails.

For engineers reviewing the AP65200FK-7 datasheet, AP65200FK-7 pinout, AP65200FK-7 application, or AP65200FK-7 equivalent, key selection criteria include its 0.925 V feedback reference, 340 kHz fixed switching frequency, EN-controlled startup, external soft-start timing via SS pin, and thermal shutdown at 160 °C with 40 °C hysteresis in SO-8EP package.

Technical Context

The AP65200FK-7 uses peak-current-mode control with internal slope compensation to suppress subharmonic oscillation at half-switching frequency (170 kHz). Its error amplifier features 800 V/V gain and 1000 µA/V transconductance, interfacing externally via COMP pin for loop stabilization.

It integrates dual N-channel MOSFETs with matched 130 mΩ R_DS(ON), supports cycle-by-cycle overcurrent protection with fold-back frequency shift to 102 kHz, and includes UVLO (4.05 V rising threshold, 250 mV hysteresis) and overvoltage lockout triggered at 1.1 V on FB pin.

Key Specifications

Parameter	Value and Actual Design Meaning
V_IN Range	4.7 V to 18 V - Supports wide-input industrial and consumer 5 V/12 V bus rails without pre-regulation.
I_OUT Continuous	2 A - Sustains full load at ambient ≤85 °C in SO-8EP package with θ_JA = 40 °C/W.
Switching Frequency	340 kHz (±12%) - Enables compact LC filter design with standard 3.3–10 µH inductors and 22–47 µF output capacitors.
V_FB Reference	0.925 V (±25 mV) - Sets output voltage accuracy; enables 1.2 V to 16 V regulation using standard resistor dividers.
Efficiency Peak	95% at 12 V_IN/3.3 V_OUT/1 A - Achieved via low R_DS(ON) MOSFETs and light-load pulse-skipping mode.
Thermal Shutdown	160 °C (±5 °C) with ~40 °C hysteresis - Protects die during sustained overload; auto-recovery after cooldown to ~120 °C.
Soft-Start Current	6 µA - Enables precise 15 ms soft-start with 0.1 µF SS-to-GND capacitor; resets on EN deassertion or UVLO.

Pinout & Package

AP65200FK-7 is packaged in RoHS-compliant Green SO-8EP (exposed pad), with thermal resistance θ_JA = 40 °C/W and θ_JC = 9 °C/W under recommended PCB layout (2″×2″, 2 oz copper, thermal vias).

Pin/Terminal	Circuit Role	Design Meaning
BS (Pin 1)	Bootstrap Supply Input	Provides gate drive voltage for high-side MOSFET; requires ≥0.01 µF ceramic capacitor from SW to BS.
IN (Pin 2)	Main Power Input	Supplies IC bias and switch power; must be bypassed with ≥10 µF low-ESR capacitor to GND.
SW (Pin 3)	Switch Node Output	Connects to inductor input; carries high di/dt switching current; critical for EMI and layout integrity.
GND (Pin 4)	Power Ground	Primary return path for high-current loops; must be tied to exposed thermal pad (≥80% solder coverage).
FB (Pin 5)	Feedback Voltage Sense	Monitors resistive divider output; regulates V_OUT to 0.925 V; sensitive to noise-route away from SW.
COMP (Pin 6)	Loop Compensation Node	Output of transconductance error amplifier; connects to RC network for stability tuning (e.g., 6.8 kΩ + 6.8 nF).
EN (Pin 7)	Enable Control Input	Digital ON/OFF control; active-high (0.7–1.2 V threshold); internal 100 kΩ pull-up enables auto-start when tied to IN.
SS (Pin 8)	Soft-Start Timing Input	Sets ramp time for V_REF; 6 µA current source charges external capacitor; floating disables soft-start.

Key Features

Feature	Design Value
Automated Light-Load Efficiency Mode	Enters pulse-skipping at <0.15 A load to maintain >80% efficiency down to 10 mA, reducing no-load quiescent current to 0.3 µA.
Integrated Dual MOSFETs	Matched 130 mΩ R_DS(ON) high- and low-side switches eliminate external FETs and gate drivers, reducing BOM count by ≥4 components.
Current-Mode Control with Slope Compensation	Enables stable operation at duty cycles >50%, supports wide VIN/VOUT ratios, and delivers <50 µs load transient recovery (0.15→2 A).
Comprehensive Protection Suite	Includes cycle-by-cycle OCP (4.4 A HS limit), thermal shutdown (160 °C), UVLO (4.05 V), and FB overvoltage lockout (1.1 V).
External Soft-Start Programmability	6 µA SS current source allows precise start-up timing (e.g., 15 ms with 0.1 µF); resets on fault conditions for reliable re-start.

Applications

FPGA Core Power Supply

DSP/ASIC I/O Rail

Use Scenario: Powers Xilinx Artix-7 FPGA core logic requiring tightly regulated 1.2 V @ 1.8 A with <±1% tolerance.

IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing dynamic load response and low-noise core voltage.

Use Value: Delivers 92% efficiency at 1.2 V/1.8 A while maintaining <15 mV output ripple and <30 µs transient recovery.

Use Scenario: Supplies TI C66x DSP I/O banks at 3.3 V with fast load steps during video frame buffering.

IC Role / Device Role / Timing Role: High-bandwidth point-of-load regulator handling 0.15→2 A load transients within 50 µs.

Use Value: Current-mode architecture and 340 kHz switching enable stable regulation without external compensation tuning.

Set-Top Box Main 5 V Rail

Flat Panel TV Audio Amplifier Bias

Use Scenario: Generates 5 V main system rail from 12 V input in Comcast X1 platform with variable HDMI/USB loads.

IC Role / Device Role / Timing Role: Primary DC/DC converter supporting burst-mode operation during standby and full load during playback.

Use Value: Light-load efficiency algorithm reduces standby power to <15 mW, meeting ENERGY STAR Tier 2 requirements.

Use Scenario: Provides clean 12 V bias for Class-D audio amplifiers in LG OLED TVs, rejecting switching noise from adjacent SMPS.

IC Role / Device Role / Timing Role: Low-EMI buck converter with optimized layout guidance and FB noise filtering capability.

Use Value: SO-8EP package with exposed thermal pad ensures <15 °C junction rise at 1.5 A, enabling fanless chassis design.

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)	36 V max VIN, 2 A, 500 kHz, internal compensation, no SS pin, 0.8 V FB reference	Better for higher-input systems (e.g., 24 V industrial); lacks programmable soft-start and light-load optimization	Select when input exceeds 18 V or board space prohibits external compensation components.
TPS54202DDCR (Texas Instruments)	6–17 V VIN, 2 A, 400–2.5 MHz adjustable, integrated FETs, 0.6 V FB, Eco-mode™	Higher switching frequency enables smaller magnetics; lower FB reference increases output accuracy at low voltages	Prefer for designs needing <1 V outputs or tighter than ±1% regulation at 1.0 V.

Compared with MP2315DJ-LF-Z and TPS54202DDCR, AP65200FK-7 offers superior light-load efficiency below 100 mA due to its dedicated algorithm, fixed 340 kHz frequency for predictable EMI filtering, and SO-8EP thermal performance ideal for convection-cooled consumer enclosures.

Availability

AP65200FK-7 is available at Aetrix Electronics and suitable for FPGA power supplies, set-top box main rails, and flat-panel TV audio bias circuits requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.

Supply support for AP65200FK-7 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 solutions for high-volume consumer and industrial markets.

The AP65200 belongs to Diodes' high-efficiency synchronous buck converter product line, designed specifically for cost-sensitive, space-constrained consumer electronics requiring robust light-load performance and simplified layout.

FAQ

What is the minimum output voltage achievable with AP65200FK-7?

The AP65200FK-7 has a fixed 0.925 V feedback reference voltage, enabling output voltages as low as 0.925 V when FB is connected directly to VOUT. For 1.0 V output, use R1 = 3.0 kΩ and R2 = 10 kΩ per the datasheet's resistor selection table. Lower outputs require precision resistors to maintain accuracy within ±25 mV reference tolerance.

Can AP65200FK-7 operate without an external compensation network?

No-AP65200FK-7 requires external RC components on the COMP pin for loop stability. The datasheet specifies minimum values (e.g., 6.8 kΩ + 6.8 nF for 3.3 V output) based on output capacitance and ESR. Omitting compensation causes oscillation or poor transient response, as the internal error amplifier is transconductance-based and unbuffered.

How does the light-load efficiency algorithm function?

The AP65200FK-7 automatically enters pulse-skipping mode below ~0.15 A load, disabling switching cycles until output droop triggers regulation. This reduces switching losses and quiescent current to 0.3 µA in shutdown, achieving >85% efficiency at 10 mA-critical for always-on consumer standby power budgets.

Is the SO-8EP package thermally compatible with manual rework?

Yes-the SO-8EP's exposed thermal pad is designed for standard reflow profiles (peak 260 °C, 20–40 sec) and supports hot-air rework when using controlled heating (≤350 °C tip, <10 sec dwell) and proper pad exposure (≥80% solder coverage). Thermal resistance drops to 9 °C/W junction-to-case, enabling reliable 2 A operation without forced air.

AP65200FK-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 10-UFDFN 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):: 4.7V

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 0.925V

Voltage - Output (Max):: 16V

Current - Output:: 2A

Frequency - Switching:: 340kHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: U-DFN2626-10

AP65200FK-7 FAQ

1.How can I place an order for AP65200FK-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP65200FK-7 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 AP65200FK-7 reliable?

The price and inventory of AP65200FK-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP65200FK-7 is usually 5 days.

3.What payment methods are accepted for AP65200FK-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP65200FK-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP65200FK-7?

AP65200FK-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP65200FK-7 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 AP65200FK-7?

For technical support, including AP65200FK-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP65200FK-7 requirements.

6.How does Aetrix verify that AP65200FK-7 is sourced from the original manufacturer or authorized distributors?

All AP65200FK-7 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 AP65200FK-7 meets industry standards.

7.What is the process for return or replacement of AP65200FK-7?

All AP65200FK-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP65200FK-7, 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 AP65200FK-7 part is unused and in its original packaging.

Return procedure for AP65200FK-7:

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…