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Home Products Integrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching Regulators~~ADP2120ACPZ-2.5-R7~~

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ADP2120ACPZ-2.5-R7 - Analog Devices Inc.

Name: Analog Devices Inc. ADP2120ACPZ-2.5-R7
Brand: Analog Devices Inc.
SKU: ADP2120ACPZ-2.5-R7
Availability: InStock
Rating: 5 (3 reviews)

Manufacturer Part Number: ADP2120ACPZ-2.5-R7

Manufacturer: Analog Devices, Inc.

Allelco Part Number: 32D-ADP2120ACPZ-2.5-R7

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 19,155 pcs available, New & Original

Parts Description: IC REG BUCK 2.5V 1.25A 10LFCSP

Package: 10-LFCSP-WD (3x3)

Data sheet: ADP2120ACPZ-2.5.pdf

Datasheets
Cylindrical Battery Holders.pdf

PCN Assembly/Origin
2.73KHz.pdf

Other Related Documents
Tape and Reel Packaging.pdf

RoHs Status: ROHS3 Compliant

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Our certification

In stock: 19155

Specifications

ADP2120ACPZ-2.5-R7 Tech Specifications
Analog Devices Inc. - ADP2120ACPZ-2.5-R7 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - ADP2120ACPZ-2.5-R7

Product Attribute	Attribute Value
Manufacturer	Analog Devices, Inc.
Voltage - Output (Min/Fixed)	2.5V
Voltage - Output (Max)	-
Voltage - Input (Min)	2.3V
Voltage - Input (Max)	5.5V
Topology	Buck
Synchronous Rectifier	Yes
Supplier Device Package	10-LFCSP-WD (3x3)
Series	-
Package / Case	10-VFDFN Exposed Pad, CSP

Product Attribute	Attribute Value
Package	Tape & Reel (TR)
Output Type	Fixed
Output Configuration	Positive
Operating Temperature	-40°C ~ 125°C (TJ)
Number of Outputs	1
Mounting Type	Surface Mount
Function	Step-Down
Frequency - Switching	1.2MHz
Current - Output	1.25A
Base Product Number	ADP2120

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Parts Introduction

ADP2120ACPZ-2.5-R7 (1)

Manufacturer Part Number

ADP2120ACPZ-2.5-R7

Manufacturer

Analog Devices

Introduction

The ADP2120ACPZ-2.5-R7 is a high-efficiency, synchronous step-down DC-DC converter that provides a regulated output voltage from a wide input voltage range. It features a fixed 2.5V output voltage and a maximum output current of 1.25A. The converter operates at a 1.2 MHz switching frequency, allowing the use of small external components.

Product Features and Performance

Wide input voltage range: 2.3V to 5.5V

Fixed 2.5V output voltage

Maximum output current of 1.25A

2 MHz switching frequency

Synchronous rectification for high efficiency

Internal soft-start

Thermal shutdown protection

Low quiescent current of 27 μA

Product Advantages

High efficiency of up to 95%

Small solution size with integrated power MOSFETs

Excellent load and line regulation

Robust protection features

Key Reasons to Choose This Product

Efficient power conversion for battery-powered and portable applications

Compact footprint for space-constrained designs

Reliable operation with built-in protection features

Ease of use with fixed output voltage and high switching frequency

Quality and Safety Features

AEC-Q100 qualified for automotive applications

RoHS and REACH compliant

Compatibility

The ADP2120ACPZ-2.5-R7 is compatible with a wide range of electronic devices and applications that require a regulated 2.5V power supply.

Application Areas

Portable electronics

Wearable devices

Battery-powered equipment

Industrial automation and control systems

Product Lifecycle

The ADP2120ACPZ-2.5-R7 is an active product. There are no known equivalent or alternative models available at this time. For the latest product information and availability, please contact our website's sales team.

Frequently Asked Questions(FAQ)

What are the key electrical performance specifications for the ADP2120ACPZ-2.5-R7 buck regulator when used in a space-constrained industrial power supply design?: The ADP2120ACPZ-2.5-R7 is optimized for compact, high-efficiency power conversion with a fixed 2.5V output and 1.25A maximum continuous current capability. Its 1.2MHz switching frequency enables the use of small external inductors and ceramic capacitors, which is critical in designs where board area is limited. The input voltage range of 2.3V to 5.5V makes it suitable for single-cell Li-ion or dual NiMH configurations without requiring additional pre-regulation stages. With synchronous rectification, efficiency typically exceeds 88% at full load within the rated operating temperature range of -40°C to 125°C. This combination of high frequency, integrated FETs, and stable output regulation supports reliable operation in compact embedded systems such as motor controllers or sensor nodes.

How does the ADP2120ACPZ-2.5-R7 compare to other members of the ADP2120 series in terms of output voltage options and thermal performance under continuous load?: While all variants in the ADP2120 series share identical package (10-LFCSP-WD) and core architecture—including 1.2MHz switching, 1.25A output, and 2.3–5.5V input range—the ADP2120ACPZ-2.5-R7 provides a fixed 2.5V output, unlike adjustable versions that allow post-regulation trimming. In thermal evaluation, the exposed pad on the 10-LFCSP package significantly improves heat dissipation compared to non-exposed alternatives, allowing sustained 1.25A operation without exceeding junction temperature limits even in compact enclosures. Compared to lower-current siblings like the ADP2118 (rated for 800mA), the ADP2120ACPZ-2.5-R7 handles higher loads but exhibits similar thermal behavior due to shared die size and packaging. However, its efficiency curve remains favorable across the entire load range, making it preferable over linear regulators in battery-powered applications requiring >80% efficiency at moderate loads.

Can the ADP2120ACPZ-2.5-R7 be safely operated near its maximum current rating in an environment with elevated ambient temperatures above 85°C?: Operating the ADP2120ACPZ-2.5-R7 at or near 1.25A while maintaining ambient temperatures above 85°C requires careful consideration of total system thermal resistance. The device’s maximum junction temperature is 125°C, leaving only a 40°C margin under such conditions when accounting for self-heating and PCB trace conduction. Assuming typical RθJA values of ~40°C/W with proper copper layout, full-load operation could result in junction temperatures approaching 110–120°C depending on airflow and layer stack-up. Therefore, derating to 1.0A or less is recommended in high-ambient environments to ensure long-term reliability. Additionally, placing the IC close to the edge of the PCB or using thermal vias beneath the exposed pad can reduce thermal impedance by up to 30%, extending safe operating duration significantly.

What design considerations should engineers evaluate when selecting bypass capacitors for the ADP2120ACPZ-2.5-R7 to ensure stable operation across varying load transients?: For stable operation, especially under fast load transients typical in digital loads like microcontrollers, low-ESR ceramic capacitors must be carefully chosen near both input and output pins. The ADP2120ACPZ-2.5-R7 recommends a minimum output capacitance of 10µF with X7R dielectric for stability; however, transient response improves with higher values (e.g., 22µF) if space permits. Input-side filtering should include at least 4.7µF to suppress high-frequency ripple from upstream sources. Equally important is minimizing loop inductance by placing these capacitors within 2mm of the respective pads and avoiding via stubs in high-speed return paths. Failure to meet these layout constraints can lead to instability, overshoot during step-down transitions, or even oscillation at light loads, particularly if output capacitance exceeds recommended levels without adequate ESR control.

How does the ADP2120ACPZ-2.5-R7 handle startup behavior when powered from a battery with significant internal resistance, such as aged alkaline cells?: When sourcing power from a battery with high internal resistance—such as depleted alkaline AA cells—the ADP2120ACPZ-2.5-R7 may experience delayed or incomplete startup due to insufficient input voltage slew rate. Although the absolute minimum input voltage is 2.3V, real-world batteries often sag below this threshold under load during startup. To mitigate this, an external soft-start circuit or a bulk capacitor (≥100µF) placed close to the input pin can help maintain voltage stability through initial inrush. Additionally, enabling the EN pin gradually via a resistor divider or microcontroller GPIO ensures controlled turn-on, preventing excessive inrush current that could further depress the supply rail. Without such precautions, intermittent boot failures are common in cold or weak battery conditions, even though the IC itself meets all functional specs once stable input is established.

In what scenarios would using the ADP2120ACPZ-2.5-R7 be preferable over a discrete buck controller paired with external MOSFETs?: The ADP2120ACPZ-2.5-R7 offers clear advantages in space-constrained, low-to-medium complexity applications where simplicity and integration outweigh peak performance needs. Compared to discrete solutions, its fully integrated design eliminates the need for gate drivers, Schottky diodes, and extensive compensation networks, reducing component count by 60–70%. This translates into faster time-to-market and lower BOM cost for products like IoT sensors, wearables, or white-label modules. Furthermore, its fixed-frequency PWM architecture simplifies EMI filtering compared to variable-frequency counterparts, and the built-in protection features (overcurrent, thermal shutdown) reduce system-level failure modes. However, discrete architectures remain superior in ultra-high-power or custom-voltage applications requiring fine-grained tuning of switching characteristics—areas where the ADP2120ACPZ-2.5-R7 is intentionally constrained by design.

What impact does layout parasitics have on the actual switching performance of the ADP2120ACPZ-2.5-R7, and how can they be minimized during PCB design?: Parasitic inductance and resistance in the power path—particularly at the SW node—can degrade efficiency, increase switching losses, and compromise EMI performance in the ADP2120ACPZ-2.5-R7. Excessive loop area between input capacitor, inductor, and IC creates ringing that stresses internal switches and may trigger false overvoltage detection. To minimize this, the power stage should occupy no more than 1cm², with all connections kept short and wide. Thermal vias under the exposed pad reduce ground plane impedance, improving feedback accuracy and reducing noise pickup. Simulation tools like ANSYS SIwave or LTspice can model parasitic effects, but empirical validation via oscilloscope probing at 100MHz bandwidth is essential to confirm clean switching waveforms. Poor layouts often manifest as audible coil whine or reduced efficiency at light loads, symptoms not apparent from datasheet graphs alone.

How do environmental certifications like RoHS and REACH compliance affect procurement decisions involving the ADP2120ACPZ-2.5-R7 in global manufacturing environments?: RoHS3 compliance ensures the ADP2120ACPZ-2.5-R7 contains restricted substances at legally permissible levels, facilitating use in EU, North America, and Japan without export restrictions. Similarly, REACH Unaffected status indicates no SVHCs above 0.1% weight fraction, simplifying supply chain documentation. These attributes reduce audit overhead during ISO 14001 certification and support sustainability goals in consumer electronics. While functionally equivalent devices exist without these certifications, their inclusion lowers regulatory risk in high-volume production runs. Notably, MSL 3 classification (168-hour window) mandates careful handling during assembly to prevent moisture-induced popcorning, but this applies broadly across semiconductor components regardless of compliance status.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. ADP2120ACPZ-2.5-R7

Product Attribute
Part Number	ADP2120ACPZ-1.5-R7	ADP2119ACPZ-2.5-R7	ADP2120ACPZ-1.0-R7	ADP2120ACPZ-1.8-R7
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Voltage - Input (Max)	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Number of Outputs	-	-	-	-
Synchronous Rectifier	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Output Type	-	Current - Unbuffered	Voltage - Buffered	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Frequency - Switching	-	-	-	-
Voltage - Input (Min)	-	-	-	-
Topology	-	-	-	-
Current - Output	-	-	-	-
Voltage - Output (Max)	-	-	-	-
Output Configuration	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Series	-	-	-	-
Voltage - Output (Min/Fixed)	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Function	-	-	-	-

ADP2120ACPZ-2.5-R7 Datasheet PDF

Download ADP2120ACPZ-2.5-R7 pdf datasheets and Analog Devices Inc. documentation for ADP2120ACPZ-2.5-R7 - Analog Devices Inc..

Datasheets: Cylindrical Battery Holders.pdf
PCN Assembly/Origin: 2.73KHz.pdf
Other Related Documents: Tape and Reel Packaging.pdf

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Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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America	United States	5
America	Brazil	7
Europe	Germany	5
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	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
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1.00kg-2.00kg	USD$40.00 - USD$80.00
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