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

Diodes Incorporated AP66200QFVBW-13

Name: AP66200QFVBW-13
Brand: Diodes Incorporated
SKU: AP66200QFVBW-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP66200QFVBW-13

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-UQFN Exposed Pad

Datasheet:: AP66200QFVBW-13.pdf

Description:: IC REG BUCK ADJ 2A U-QFN4040-16

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Product details

Overview

AP66200QFVBW-13 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter with integrated 185mΩ high-side and 80mΩ low-side MOSFETs, 3.8V–60V input range, 2A continuous output, adjustable 300kHz–2.5MHz switching frequency (default 500kHz), and 0.8V–50V output regulation. It delivers up to 95% efficiency in distributed power systems for infotainment and ADAS ECUs.

For engineers reviewing the AP66200QFVBW-13 datasheet, AP66200QFVBW-13 pinout, AP66200QFVBW-13 application, or AP66200QFVBW-13 equivalent, key selection criteria include automotive-grade thermal robustness (−40°C to +125°C TA), current-mode control stability, bias-pin efficiency optimization, soft-start/sequencing flexibility, and integrated OCP/hiccup + thermal shutdown protection.

Technical Context

The AP66200QFVBW-13 implements current-mode control with internal compensation, enabling stable loop response across wide output capacitance ranges and fast load transient recovery. Its dual-MOSFET architecture supports PFM/PWM mode selection via MSYNC and external clock synchronization up to 2.5MHz.

It integrates a 4.8V internal LDO regulator powered from VIN or BIAS (≥4.5V), reducing quiescent current to 40μA typical and enabling enhanced efficiency in high-VIN applications. The device features ±5% power-good detection with 5MΩ internal pull-up and 1.5ms rising-edge delay.

Key Specifications

Parameter	Value and Actual Design Meaning
V_IN Range	3.8V to 60V - supports 12V/24V/48V automotive battery rails with 72V absolute max rating.
I_OUT Continuous	2A - sustained output without derating at T_A ≤ +125°C in U-QFN4040-16 package.
f_SW Range	300kHz to 2.5MHz - programmable via FS resistor; default 500kHz enables optimal EMI/efficiency trade-off.
V_FB	0.800V ±12mV - precise reference enables accurate output setting with standard resistor dividers.
R_DS(ON) HS/Low-Side	185mΩ / 80mΩ - low conduction loss supports >95% peak efficiency at 5V/2A output.
Quiescent Current	40μA typical - enables ultra-low standby power in always-on automotive modules.
Thermal Shutdown	165°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design.

Pinout & Package

AP66200QFVBW-13 uses the Green U-QFN4040-16/SWP (Type UXB) package: 4.0mm × 4.0mm, 0.5mm pitch, exposed thermal pad (EPAD) connected to PGND.

Pin/Terminal	Circuit Role	Design Meaning
1 (BIAS)	Bias supply selector	Switches internal VCC regulator source from VIN to external ≥4.5V rail (e.g., VOUT), cutting IQ by ~30%.
2 (VCC)	Internal LDO output	Requires 1μF ceramic bypass to PGND; powers gate drivers and analog circuitry; inactive when EN = low.
3,4 (VIN)	Main power input	Accepts 3.8V–60V; must be bypassed with bulk + ceramic capacitors near pins to suppress ripple and EMI.
5 (BST)	Bootstrap capacitor node	Connects 0.1μF+ capacitor to SW to generate gate drive voltage for high-side MOSFET.
6,7 (SW)	Power switching node	Drives external LC filter; connects directly to BST cap and inductor; high dv/dt requires tight layout.
8,9 (PGND)	Power ground return	Low-impedance path for switch currents; must connect to EPAD via multiple vias for thermal/efficiency.
10 (EN)	Enable control	Active-high digital input (1.38V threshold); 40MΩ internal pull-down allows direct VIN tie for auto-start.
11 (FS)	Frequency select	Resistor-to-GND sets f_SW; open or tied to VCC defaults to 500kHz.
12 (MSYNC)	Mode/sync control	GND = PFM; VCC = forced PWM; external clock = sync input (300kHz–2.5MHz, positive edge).
13 (PG)	Open-drain power-good	Asserts low during soft-start or V_OUT deviation >±5%; internal 5MΩ pull-up eliminates external resistor.
14 (SS/TR)	Soft-start/tracking	Capacitor-to-GND sets ramp time; tied to VCC = 1.7ms internal soft-start; supports ratiometric/sequential sequencing.
15 (FB)	Feedback input	Senses output via resistive divider; regulates to 0.8V reference; high-impedance input minimizes divider current.
16 (GND)	Analog ground reference	Single-point connection to EPAD; separates noise-sensitive analog circuits from power ground paths.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for −40°C to +125°C ambient operation, HBM ±2500V, CDM ±1500V - meets automotive reliability requirements.
Integrated dual MOSFETs	185mΩ HS + 80mΩ LS - eliminates external FETs and gate drivers, reducing BOM count and layout area by >30%.
Enhanced efficiency mode	BIAS pin switchover at 4.5V - reduces IQ by ~30% in 5V–15V output applications versus VIN-only operation.
Flexible soft-start & sequencing	1.7ms internal or external capacitor-programmable SS/TR - enables controlled power-up of multi-rail systems (e.g., SoC + memory).
Robust protection suite	Hiccup-mode OCP, thermal shutdown (165°C), soft discharge, ±5% PG detection - prevents latch-up and system fault propagation.

Applications

Automotive Infotainment Systems

FPGA/DSP Core Supplies

Use Scenario: Powering display controllers, audio codecs, and navigation processors in head units with 12V battery input.

IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 1.2V/3.3V/5V rails with fast transient response to burst-mode processing loads.

Use Value: AEC-Q100 qualification ensures reliability in hot-cabin environments; 95% efficiency minimizes heat sink requirements in sealed enclosures.

Use Scenario: Generating configurable core voltages for Xilinx Zynq or Intel Cyclone FPGA platforms in vehicle ADAS domain controllers.

IC Role / Device Role / Timing Role: Adjustable-output buck converter supporting dynamic voltage scaling (DVS) via FB divider reconfiguration.

Use Value: 0.8V–50V output range covers 0.85V core to 3.3V I/O rails; current-mode control maintains regulation during 10A/ms load steps.

Distributed Automotive Power

Telecom Network Equipment

Use Scenario: Local DC/DC conversion in zone-based E/E architectures, powering sensors, actuators, and gateway modules from 48V backbone.

IC Role / Device Role / Timing Role: High-input-voltage buck stage stepping 48V down to 5V/12V intermediate rails with minimal external components.

Use Value: 60V max VIN and 185mΩ R_DS(ON) enable efficient 48V→5V conversion; U-QFN4040-16 footprint saves space in dense zone ECUs.

Use Scenario: Providing isolated 3.3V/5V supplies for optical transceivers and packet processing ASICs in 5G base station remote radio units.

IC Role / Device Role / Timing Role: Secondary regulator after front-end AC/DC or PoE converter, handling variable telecom load profiles.

Use Value: PFM mode extends light-load efficiency to >85% at 10mA; MSYNC pin enables synchronization to system clock to reduce beat-frequency EMI.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ4420AGU-AEC1-P	2A, 3.8V–60V, fixed 500kHz, no BIAS pin, lower IQ (25μA), same AEC-Q100 Grade 1	Lacks bias-driven efficiency boost and external soft-start flexibility; simpler layout but less adaptable to multi-rail sequencing	Prefer when lowest possible IQ is critical and output sequencing is not required.
TPS543B20RJNR	3A, 4.5V–20V, 500kHz–2.2MHz, PMBus interface, higher cost, non-automotive grade	Supports digital configuration and telemetry but lacks AEC-Q100 qualification and 60V input capability	Choose only for non-automotive industrial systems requiring real-time monitoring and tighter output tolerance (±0.5%).

Compared with MPQ4420AGU-AEC1-P, AP66200QFVBW-13 adds BIAS-pin efficiency optimization and flexible SS/TR sequencing at the cost of slightly higher IQ; versus TPS543B20RJNR, it trades digital control for automotive qualification and extended input range-making it the sole fit for 48V automotive POE and infotainment rails.

Availability

AP66200QFVBW-13 is available at Aetrix Electronics and suitable for automotive infotainment systems, FPGA/DSP core supplies, and distributed 48V power architectures requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for AP66200QFVBW-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 manufacturer specializing in discrete, analog, and mixed-signal ICs, with strong focus on automotive, industrial, and computing markets.

The AP66200Q belongs to Diodes' automotive-grade power management portfolio, designed specifically for high-reliability DC/DC conversion in harsh-temperature, high-voltage vehicle subsystems including ADAS, body electronics, and infotainment.

FAQ

What is the minimum recommended input voltage for reliable startup?

The AP66200QFVBW-13 requires VIN ≥3.8V to exit undervoltage lockout (UVLO), with a typical threshold of 3.625V and 50mV hysteresis. Below this, the EN pin remains inactive and internal regulators stay disabled. Startup is guaranteed at 4.0V across −40°C to +125°C ambient per AEC-Q100 testing.

Can the BIAS pin be left floating or tied directly to PGND?

No - BIAS must be actively terminated: tie to VOUT (for 5V–15V outputs), a clean ≥4.5V supply (with 1µF local bypass), or PGND if unused. Floating BIAS causes unstable VCC regulation and increased IQ; PGND tie disables bias-mode operation and forces VCC sourcing from VIN, raising die temperature under high-VIN conditions.

How does the soft-discharge function operate during shutdown?

When EN goes low, the AP66200QFVBW-13 activates an internal 10kΩ discharge path from SW to PGND, rapidly collapsing the output voltage to prevent hold-up or back-driving of downstream circuitry. This occurs within microseconds and is independent of external components, ensuring safe power-down in multi-rail systems.

Is the PG (power-good) signal compatible with 3.3V logic interfaces?

Yes - PG is an open-drain output with internal 5MΩ pull-up to VCC (4.8V). It sinks current when VOUT deviates >±5% or during soft-start. To interface with 3.3V logic, add an external 3.3V pull-up resistor (e.g., 10kΩ) and use a level-shifting buffer if driving microcontroller GPIOs with strict 3.3V input thresholds.

AP66200QFVBW-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 16-UQFN Exposed Pad

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):: 3.8V

Voltage - Input (Max):: 60V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 50V

Current - Output:: 2A

Frequency - Switching:: 300kHz ~ 2.5MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: U-QFN4040-16/SWP (Type UXB)

AP66200QFVBW-13 FAQ

1.How can I place an order for AP66200QFVBW-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP66200QFVBW-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 AP66200QFVBW-13 reliable?

The price and inventory of AP66200QFVBW-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP66200QFVBW-13 is usually 5 days.

3.What payment methods are accepted for AP66200QFVBW-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP66200QFVBW-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP66200QFVBW-13?

AP66200QFVBW-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP66200QFVBW-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 AP66200QFVBW-13?

For technical support, including AP66200QFVBW-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP66200QFVBW-13 requirements.

6.How does Aetrix verify that AP66200QFVBW-13 is sourced from the original manufacturer or authorized distributors?

All AP66200QFVBW-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 AP66200QFVBW-13 meets industry standards.

7.What is the process for return or replacement of AP66200QFVBW-13?

All AP66200QFVBW-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP66200QFVBW-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 AP66200QFVBW-13 part is unused and in its original packaging.

Return procedure for AP66200QFVBW-13:

1.Submit a request within 90 days.

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

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