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

Analog Devices Inc. ADP2302ARDZ-2.5

Name: ADP2302ARDZ-2.5
Brand: Analog Devices Inc.
SKU: ADP2302ARDZ-2.5
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP2302ARDZ-2.5

Manufacturer:: Analog Devices Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

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

Datasheet:: ADP2302ARDZ-2.5.pdf

Description:: IC REG BUCK 2.5V 2A 8SOIC

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Product details

Overview

ADP2302ARDZ-2.5 from Analog Devices is a fixed-output, nonsynchronous step-down DC/DC regulator delivering up to 2 A continuous output current at 2.5 V with ±1.5% output accuracy over temperature, 700 kHz switching frequency, and integrated high-side MOSFET. It operates from 3.0 V to 20 V input, supports power-good signaling, and targets intermediate rail conversion in industrial and communications systems.

For engineers reviewing the ADP2302ARDZ-2.5 datasheet, ADP2302ARDZ-2.5 pinout, ADP2302ARDZ-2.5 application, or ADP2302ARDZ-2.5 equivalent, key selection criteria include its 2 A load capability, 2.5 V fixed output, SOIC_N_EP package thermal performance (θJA = 58.5°C/W), precision enable threshold (1.2 V typ), and integrated bootstrap diode eliminating external components.

Technical Context

The ADP2302ARDZ-2.5 implements fixed-frequency, current-mode PWM control with automatic transition to pulse-skip mode at light loads for efficiency optimization. Its internal compensation, 2048-cycle soft start, and slope compensation prevent subharmonic oscillation above 50% duty cycle.

It features a precision enable input with 100 mV hysteresis, undervoltage lockout (UVLO) with 2.9 V rising threshold, and power-good output with 87.5% rising threshold and 32-cycle deglitch. Thermal shutdown activates at 150°C with 15°C hysteresis, and overcurrent protection limits peak switch current to 3.5 A (typ).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.5 V ±1.5% over −40°C to +125°C junction temperature - ensures stable logic rail generation without external feedback resistors.
Max Output Current	2 A continuous - supports mid-power digital ICs, FPGAs I/O banks, and microcontroller cores requiring regulated 2.5 V supply.
Input Voltage Range	3.0 V to 20 V - accommodates wide-input industrial supplies, 12 V/24 V bus systems, and battery-backed applications.
Switching Frequency	700 kHz (595–805 kHz range) - enables use of compact 1–15 µH inductors and ceramic output capacitors for space-constrained designs.
Feedback Reference	2.5 V output directly connected to FB pin - eliminates external resistor divider, reducing BOM count and layout sensitivity.
Thermal Resistance	θJA = 58.5°C/W on JEDEC 4-layer board - requires exposed pad soldered to ground plane for reliable 2 A operation at +85°C ambient.
Enable Threshold	1.2 V typical with 100 mV hysteresis - allows precise power sequencing with external resistive dividers or direct VIN tie-off.
Power-Good Accuracy	87.5% rising threshold (±2.5% hysteresis) - provides robust system-level voltage monitoring for downstream enable sequencing.

Pinout & Package

ADP2302ARDZ-2.5 is housed in an 8-lead SOIC_N_EP (SOIC narrow with exposed paddle) package. The exposed paddle must be soldered to a PCB ground plane for thermal management and electrical stability.

Pin/Terminal	Circuit Role	Design Meaning
BST	Bootstrap supply for high-side MOSFET gate driver	Requires 0.1 µF X5R/X7R capacitor to SW; generates ~5.0 V floating gate drive voltage - no external bootstrap diode needed.
VIN	Main power input	Accepts 3.0–20 V; must be bypassed with low-ESR ceramic capacitor directly to GND - defines maximum input stress and UVLO behavior.
EN	Enable control with precision threshold	1.2 V typical activation with 100 mV hysteresis and 1.2 µA internal pull-down - enables programmable UVLO or supply sequencing.
PGOOD	Open-drain power-good status output	Asserts high when FB ≥ 87.5% of reference; requires external pull-up - used for system power sequencing and fault detection.
FB	Feedback input	Internally tied to 2.5 V output - no external divider required; connects directly to VOUT for fixed-output operation.
NC	No-connect test pin	Must be left floating or grounded - not electrically connected to internal circuitry; grounding improves noise immunity.
GND	Power and signal ground reference	Primary return path for input/output currents and internal bias - must connect to low-impedance ground plane under exposed pad.
SW	Switch node output	Drives external inductor; carries high dv/dt switching waveform - requires tight layout with minimal loop area to reduce EMI.

Key Features

Feature	Design Value
Integrated high-side MOSFET	80–160 mΩ RDS(ON) at VBST−VSW = 5 V - eliminates external switch, reduces component count, and simplifies layout for 2 A loads.
Automatic PFM/PWM mode transition	Seamless shift to pulse-skip mode below light-load threshold - maintains >85% efficiency down to 10 mA while minimizing quiescent current (720 µA typ).
Internal soft start	Fixed 2048 oscillator cycles (~2.9 ms at 700 kHz) - prevents inrush current during power-up and enables controlled output ramp for sensitive loads.
Integrated bootstrap diode	On-chip diode between VIN and BST - removes need for external bootstrap diode, saving board space and improving reliability in SOIC footprint.
Overcurrent and thermal protection	Peak current limit of 3.5 A (typ) and thermal shutdown at 150°C with 15°C hysteresis - protects against short-circuit and overload conditions without external circuitry.
Power-good output with deglitch	32-cycle deglitch time and 5% hysteresis - rejects transient dips and ensures clean system-level power sequencing signals.

Applications

Industrial PLC I/O Modules	Communications Baseband Processing
Use Scenario: Powering FPGA configuration I/O banks and ADC/DAC interface circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Primary 2.5 V point-of-load regulator supplying logic-level interfaces with tight voltage tolerance and fast transient response. Use Value: ±1.5% output accuracy and 700 kHz switching ensure stable timing margins for LVCMOS25 interfaces, while integrated soft start prevents configuration corruption during cold start.	Use Scenario: Generating clean 2.5 V supply for baseband processors and RF front-end bias rails in small-cell wireless infrastructure. IC Role / Device Role / Timing Role: Intermediate rail converter stepping down 12 V backplane voltage to 2.5 V for mixed-signal SoCs and clock distribution ICs. Use Value: Low 58.5°C/W θJA and exposed paddle enable 2 A delivery in thermally constrained modules, while PGOOD supports synchronized power-up across multi-rail subsystems.
Medical Imaging Sensor Interfaces	Automotive Infotainment Core Logic
Use Scenario: Supplying 2.5 V to high-resolution analog front-ends and low-noise amplifiers in portable ultrasound and MRI sensor arrays. IC Role / Device Role / Timing Role: Low-noise, fixed-output buck regulator providing stable analog supply independent of digital switching noise. Use Value: Internal compensation and current-mode control deliver <100 mV load transient deviation at 2 A step, preserving SNR in precision sensor signal chains.	Use Scenario: Delivering 2.5 V to application processor I/O domains and display interface controllers in automotive head units. IC Role / Device Role / Timing Role: Automotive-grade DC/DC regulator operating across −40°C to +125°C junction range with robust UVLO and thermal protection. Use Value: 3.0–20 V input range handles automotive battery transients (load dump, cold crank), while precision enable supports ASAM-compliant power sequencing.

Industrial PLC I/O Modules

Communications Baseband Processing

Use Scenario: Powering FPGA configuration I/O banks and ADC/DAC interface circuits in programmable logic controllers.

IC Role / Device Role / Timing Role: Primary 2.5 V point-of-load regulator supplying logic-level interfaces with tight voltage tolerance and fast transient response.

Use Value: ±1.5% output accuracy and 700 kHz switching ensure stable timing margins for LVCMOS25 interfaces, while integrated soft start prevents configuration corruption during cold start.

Use Scenario: Generating clean 2.5 V supply for baseband processors and RF front-end bias rails in small-cell wireless infrastructure.

IC Role / Device Role / Timing Role: Intermediate rail converter stepping down 12 V backplane voltage to 2.5 V for mixed-signal SoCs and clock distribution ICs.

Use Value: Low 58.5°C/W θJA and exposed paddle enable 2 A delivery in thermally constrained modules, while PGOOD supports synchronized power-up across multi-rail subsystems.

Medical Imaging Sensor Interfaces

Automotive Infotainment Core Logic

Use Scenario: Supplying 2.5 V to high-resolution analog front-ends and low-noise amplifiers in portable ultrasound and MRI sensor arrays.

IC Role / Device Role / Timing Role: Low-noise, fixed-output buck regulator providing stable analog supply independent of digital switching noise.

Use Value: Internal compensation and current-mode control deliver <100 mV load transient deviation at 2 A step, preserving SNR in precision sensor signal chains.

Use Scenario: Delivering 2.5 V to application processor I/O domains and display interface controllers in automotive head units.

IC Role / Device Role / Timing Role: Automotive-grade DC/DC regulator operating across −40°C to +125°C junction range with robust UVLO and thermal protection.

Use Value: 3.0–20 V input range handles automotive battery transients (load dump, cold crank), while precision enable supports ASAM-compliant power sequencing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM2678SD-2.5/NOPB	500 kHz fixed frequency, 5 A max output, no integrated bootstrap diode, requires external bootstrap diode and compensation network.	Higher current capability but larger solution size and more complex design due to external components.	Choose LM2678SD-2.5/NOPB only if >2 A output or lower switching frequency is required; ADP2302ARDZ-2.5 offers smaller footprint and simpler layout.
TPS54202DRCT	Synchronous 2 A buck, 400–2500 kHz adjustable frequency, integrated high- and low-side MOSFETs, no PGOOD output.	Lacks power-good signaling and has different enable threshold (1.23 V vs. 1.2 V); requires external soft-start capacitor.	Prefer TPS54202DRCT where higher light-load efficiency via synchronous rectification is critical; ADP2302ARDZ-2.5 provides PGOOD and simpler enable sequencing.

Compared with LM2678SD-2.5/NOPB and TPS54202DRCT, ADP2302ARDZ-2.5 delivers optimal balance of integration (integrated bootstrap diode, internal compensation), precision enable (1.2 V threshold), and system-level features (PGOOD, 2048-cycle soft start) in an industry-standard SOIC_N_EP package - making it ideal for space- and reliability-sensitive 2 A point-of-load designs.

Availability

ADP2302ARDZ-2.5 is available at Aetrix Electronics and suitable for industrial PLCs, communications base stations, medical imaging subsystems, and automotive infotainment modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADP2302ARDZ-2.5 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets with precision power, sensing, and signal chain solutions.

The ADP2302/ADP2303 product line was designed specifically for compact, high-efficiency intermediate rail conversion in space-constrained systems - emphasizing integration (MOSFET, bootstrap diode, compensation), robust protection (OCP, TSD, UVLO), and ease of use (fixed outputs, PGOOD, soft start).

FAQ

What is the maximum continuous output current of the ADP2302ARDZ-2.5?

The ADP2302ARDZ-2.5 delivers up to 2 A continuous output current at 2.5 V under thermal-limited conditions. This rating assumes proper PCB layout with the exposed paddle soldered to a thermal ground plane and ambient temperature ≤+85°C. Peak current limit is 3.5 A (typ), but sustained operation above 2 A requires derating based on θJA = 58.5°C/W and system airflow.

Does the ADP2302ARDZ-2.5 require external feedback resistors to set the output voltage?

No. The ADP2302ARDZ-2.5 is a fixed-output variant with internal feedback connection to the 2.5 V output. The FB pin is internally tied to VOUT, eliminating the need for external resistors. This simplifies design, improves accuracy by removing resistor tolerance errors, and reduces PCB area compared to adjustable versions like ADP2302ARDZ.

How does the power-good (PGOOD) output function on the ADP2302ARDZ-2.5?

The PGOOD pin on the ADP2302ARDZ-2.5 is an open-drain output that asserts high when the FB pin voltage reaches ≥87.5% of the internal reference (i.e., ≥2.188 V for the 2.5 V version). It remains high with 2.5% hysteresis and includes a 32-cycle deglitch filter to reject noise. An external pull-up resistor (to ≤20 V) is required for proper logic-level signaling in system power sequencing.

Can the ADP2302ARDZ-2.5 operate with a 3.3 V input supply?

Yes. The ADP2302ARDZ-2.5 supports input voltages from 3.0 V to 20 V, so 3.3 V is within specification. However, at low VIN (≤5 V), bootstrap voltage margin decreases. For reliable startup and full 2 A capability at 3.3 V input, ensure the exposed paddle is properly soldered and consider adding a small-signal Schottky diode from a 5 V auxiliary rail to BST per Analog Devices Application Note AN-1217.

What protection features are integrated into the ADP2302ARDZ-2.5?

The ADP2302ARDZ-2.5 integrates undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown (TSD), overvoltage protection (OVP), and power-good monitoring. UVLO disables operation below 2.4 V VIN; OCP limits peak switch current to ~3.5 A; TSD triggers at 150°C with 15°C hysteresis; OVP disables the high-side MOSFET if FB exceeds 0.880 V; and PGOOD provides system-level fault indication - all without external components.

ADP2302ARDZ-2.5 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: ADP2302

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

Packaging:: Tube

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 3V

Voltage - Input (Max):: 20V

Voltage - Output (Min/Fixed):: 2.5V

Voltage - Output (Max):: -

Current - Output:: 2A

Frequency - Switching:: 700kHz

Synchronous Rectifier:: No

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC-EP

ADP2302ARDZ-2.5 FAQ

1.How can I place an order for ADP2302ARDZ-2.5 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP2302ARDZ-2.5 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 ADP2302ARDZ-2.5 reliable?

The price and inventory of ADP2302ARDZ-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2302ARDZ-2.5 is usually 5 days.

3.What payment methods are accepted for ADP2302ARDZ-2.5?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2302ARDZ-2.5 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP2302ARDZ-2.5?

ADP2302ARDZ-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP2302ARDZ-2.5 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 ADP2302ARDZ-2.5?

For technical support, including ADP2302ARDZ-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2302ARDZ-2.5 requirements.

6.How does Aetrix verify that ADP2302ARDZ-2.5 is sourced from the original manufacturer or authorized distributors?

All ADP2302ARDZ-2.5 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 ADP2302ARDZ-2.5 meets industry standards.

7.What is the process for return or replacement of ADP2302ARDZ-2.5?

All ADP2302ARDZ-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2302ARDZ-2.5, 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 ADP2302ARDZ-2.5 part is unused and in its original packaging.

Return procedure for ADP2302ARDZ-2.5:

1.Submit a request within 90 days.

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

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