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

Diodes Incorporated AP3417CDNTR-G1

Name: AP3417CDNTR-G1
Brand: Diodes Incorporated
SKU: AP3417CDNTR-G1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP3417CDNTR-G1

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 6-WDFN Exposed Pad

Datasheet:: AP3417CDNTR-G1.pdf

Description:: IC REG BUCK ADJ 1A 6WDFN

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Product details

Overview

AP3417CDNTR-G1 from Diodes Incorporated is a 1.5MHz synchronous step-down DC-DC converter in W-DFN2020-6 (Type US) package, featuring integrated high-side and low-side MOSFETs (R_DS(ON) = 200mΩ each), 0.6V feedback reference, adjustable output (0.6V to 0.9×V_IN), and 1A continuous output current across 2.5V–5.5V input range. It delivers high efficiency in portable power rails for microcontroller cores and I/O domains.

For engineers reviewing the AP3417CDNTR-G1 datasheet, AP3417CDNTR-G1 pinout, AP3417CDNTR-G1 application, or AP3417CDNTR-G1 equivalent, key selection criteria include its 1.5MHz fixed-frequency operation enabling compact 2.2µH inductors, thermal shutdown at +160°C with +15°C hysteresis, hiccup-mode short-circuit protection, and EN pin logic-level control (1.5V high / 0.4V low).

Technical Context

The AP3417CDNTR-G1 employs peak-current mode control with internal oscillator and soft-start circuitry, eliminating external timing components. Its error amplifier compares 0.6V reference against FB voltage to regulate output via duty-cycle modulation of the synchronous buck switch pair.

Protection functions are tightly integrated: UVLO triggers at 2.3V (rising) with 0.2V hysteresis; overcurrent detection operates cycle-by-cycle above 1.5A peak inductor current; and thermal shutdown disables switching above +160°C junction temperature, auto-restarting at +145°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.5V to 5.5V - supports single-cell Li-ion, USB, and regulated 3.3V/5V rails without external LDO pre-regulation.
Output Current	1.0A continuous - sufficient for ARM Cortex-M4/M7 cores, FPGAs, and high-speed interface I/O banks.
Switching Frequency	1.5MHz (±20%) - enables use of 2.2µH shielded inductors & 10µF ceramic output capacitors, minimizing board area.
Feedback Reference	600mV ±2% - sets output accuracy; allows precise 1.0V–3.3V regulation using standard 1% resistor dividers.
R_DS(ON) (HS/LS)	200mΩ each at V_IN = 5V - reduces conduction loss, enabling >90% efficiency at 1A/1.2V out from 5V input.
Soft Start Time	400µs - controls inrush current during power-up, preventing input rail droop and system reset glitches.
Thermal Shutdown	+160°C activation with +15°C hysteresis - protects silicon integrity under sustained overload or poor PCB thermal design.

Pinout & Package

AP3417CDNTR-G1 uses the W-DFN2020-6 (Type US) package: 2.0mm × 2.0mm × 0.75mm body, 0.65mm pitch, exposed thermal pad (EP) on bottom for enhanced heat dissipation. Thermal resistance θ_JA = 53°C/W (simulated), θ_JC = 25°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1 (NC)	No internal connection	Unused pin; must be left floating or tied to GND per layout best practice - no electrical function.
2 (EN)	Enable control input	Active-high logic: ≥1.5V enables regulation; ≤0.4V forces shutdown with <0.1µA quiescent current.
3 (VIN)	Main power input	Accepts 2.5–5.5V; supplies internal bias and high-side MOSFET gate drive; requires local 4.7µF ceramic decoupling.
4 (FB)	Feedback sense node	Connects to resistor divider midpoint; internal 600mV reference regulates output voltage precisely.
5 (GND)	Analog/digital ground	Common return for control circuitry and power stage; must be connected to low-impedance PCB ground plane.
6 (LX)	Switch node	Drives external inductor; carries high di/dt square wave; requires tight layout and Kelvin connection to minimize EMI.
EP	Exposed thermal pad	Internally connected to GND; must be soldered to large copper pour for thermal performance and EMI reduction.

Key Features

Feature	Design Value
Synchronous rectification	Integrated 200mΩ HS/LS MOSFETs eliminate external Schottky diode, reducing BOM count and conduction losses.
Hiccup-mode short-circuit protection	Shuts down and retries after fault clearance when FB drops below 0.42V - prevents thermal runaway during sustained shorts.
100% duty-cycle low-dropout operation	Maintains regulation even as input approaches output voltage (e.g., 1.2V_OUT from 1.3V_IN), critical for battery end-of-life support.
Input/Output overvoltage protection	Detects VIN >6.0V and VOUT >1.2×VREF to disable switching - safeguards downstream ICs during transient surges.
RoHS/Green compliance	Fully lead-free, halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) - meets EU RoHS 3 and JEDEC M122 standards.

Applications

Mobile Power Management

USB-Powered Peripherals

Use Scenario: Regulating 3.3V or 1.8V rails for Bluetooth SoCs and PMICs in wearables and earbuds.

IC Role / Device Role / Timing Role: Primary buck regulator delivering stable core/I/O voltage with fast load-transient response.

Use Value: 1.5MHz switching minimizes inductor size to 2.2µH, enabling ultra-thin form factors while maintaining >88% efficiency at 500mA.

Use Scenario: Converting 5V USB power to 1.2V for FPGA configuration logic and 3.3V for USB PHY in dongles.

IC Role / Device Role / Timing Role: Post-regulator providing clean, low-noise supply independent of upstream USB port variation.

Use Value: Integrated soft start (400µs) prevents USB enumeration failure due to inrush current; EN pin enables host-controlled power sequencing.

Industrial Sensor Nodes

Portable Medical Devices

Use Scenario: Powering 32-bit MCU, analog front-end, and BLE radio in battery-operated environmental sensors.

IC Role / Device Role / Timing Role: Main DC-DC converter supporting wide input (2.5–5.5V) to accommodate aging Li-ion cells and energy harvesting sources.

Use Value: 0.6V feedback reference and 100% duty-cycle capability extend usable battery life by 15% compared to non-LDO-capable buck converters.

Use Scenario: Supplying 1.0V core and 1.8V I/O for low-power medical SoCs in glucose monitors and pulse oximeters.

IC Role / Device Role / Timing Role: Safety-critical power stage with thermal shutdown (+160°C) and hiccup-mode fault containment.

Use Value: No external diode required reduces component count and potential failure points; RoHS/Green compliance satisfies medical regulatory requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP3428A	Same pinout, 2A output, higher R_DS(ON) (250mΩ), 1.2MHz f_SW	Better for higher current loads but requires larger inductor (3.3µH) and has lower light-load efficiency.	Select when >1A output or lower switching noise is prioritized over minimal footprint.
MP2152GQZ-P	Monolithic 2A buck, 2.2MHz f_SW, 0.6V ref, but no hiccup-mode short-circuit protection	Lacks automatic recovery from output shorts - requires external fault handling or system reset.	Prefer where ultra-small inductors (1µH) are mandatory and short-circuit events are mitigated at system level.

Compared with AP3428A and MP2152GQZ-P, the AP3417CDNTR-G1 offers optimal balance of 1A capability, 1.5MHz frequency, hiccup-mode safety, and W-DFN2020-6 footprint - making it ideal for space-constrained, battery-powered applications requiring robust fault tolerance.

Availability

AP3417CDNTR-G1 is available at Aetrix Electronics and suitable for mobile power management, USB-powered peripherals, and industrial sensor nodes requiring stable component supply, full RoHS/Green compliance, and long-term lifecycle support.

Supply support for AP3417CDNTR-G1 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, manufacturing, and sales operations across Asia, Europe, and the Americas.

The AP3417C belongs to Diodes' high-efficiency DC-DC converter product line, designed specifically for portable and battery-powered applications demanding small solution size, low quiescent current, and comprehensive protection features.

FAQ

What is the minimum recommended output capacitor value for stable operation?

The datasheet specifies 10µF ceramic output capacitance for 1A load and 1.5MHz switching. Using less than 8µF risks instability and increased output ripple (>20mV p-p). X5R/X7R dielectrics with ≥6.3V rating and low ESR (<10mΩ) are required to maintain phase margin and avoid oscillation.

Can AP3417CDNTR-G1 operate with input voltage below 2.5V?

No - the absolute minimum input voltage is 2.5V per Recommended Operating Conditions. Below this, UVLO activates (threshold = 2.3V rising), disabling regulation. Attempting operation at 2.4V causes intermittent startup and unregulated output due to insufficient gate drive voltage for internal MOSFETs.

How does the EN pin behave when driven by a microcontroller GPIO?

EN accepts standard 3.3V or 5V logic levels: voltage ≥1.5V enables regulation; ≤0.4V forces shutdown. When driven by a 3.3V MCU, no level-shifting is needed. Pull-down resistor (100kΩ) is recommended to ensure defined state during MCU reset or power-up sequences.

Is thermal pad (EP) connection mandatory for functional operation?

Yes - the EP is internally tied to GND and serves as primary thermal path. Omitting solder connection degrades θ_JA from 53°C/W to >120°C/W, causing premature thermal shutdown at ~450mA load. Minimum 4×4 array of 0.3mm thermal vias to inner ground plane is required per Diodes' layout guidelines.

AP3417CDNTR-G1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 6-WDFN 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):: 2.5V

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 0.6V

Voltage - Output (Max):: 4.95V

Current - Output:: 1A

Frequency - Switching:: 1.5MHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: W-DFN2020-6 (Type US)

AP3417CDNTR-G1 FAQ

1.How can I place an order for AP3417CDNTR-G1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP3417CDNTR-G1 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 AP3417CDNTR-G1 reliable?

The price and inventory of AP3417CDNTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3417CDNTR-G1 is usually 5 days.

3.What payment methods are accepted for AP3417CDNTR-G1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3417CDNTR-G1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP3417CDNTR-G1?

AP3417CDNTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP3417CDNTR-G1 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 AP3417CDNTR-G1?

For technical support, including AP3417CDNTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3417CDNTR-G1 requirements.

6.How does Aetrix verify that AP3417CDNTR-G1 is sourced from the original manufacturer or authorized distributors?

All AP3417CDNTR-G1 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 AP3417CDNTR-G1 meets industry standards.

7.What is the process for return or replacement of AP3417CDNTR-G1?

All AP3417CDNTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3417CDNTR-G1, 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 AP3417CDNTR-G1 part is unused and in its original packaging.

Return procedure for AP3417CDNTR-G1:

1.Submit a request within 90 days.

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

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