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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsADP2120ACPZ-1.2-R7
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ADP2120ACPZ-1.2-R7 - Analog Devices Inc.

Manufacturer Part Number
ADP2120ACPZ-1.2-R7
Manufacturer
Analog Devices, Inc.
Allelco Part Number
98D-ADP2120ACPZ-1.2-R7
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
36,620 pcs available, New & Original
Parts Description
IC REG BUCK 1.2V 1.25A 10LFCSP
Package
10-LFCSP-WD (3x3)
Data sheet
ADP2120ACPZ-1.2.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: 36620
  • Unit Price: $2.235
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.235 $2.24
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ADP2120ACPZ-1.2-R7 Tech Specifications
Analog Devices Inc. - ADP2120ACPZ-1.2-R7 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - ADP2120ACPZ-1.2-R7

Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
Voltage - Output (Min/Fixed) 1.2V
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

Frequently Asked Questions(FAQ)

How does the ADP2120ACPZ-1.2-R7 compare to other buck regulators in terms of efficiency when stepping down from a 5V input to 1.2V at full load?
The ADP2120ACPZ-1.2-R7 achieves typical efficiencies above 90% under these conditions, primarily due to its integrated synchronous rectification and 1.2MHz switching frequency, which allows for smaller passive components. This high efficiency reduces power loss and thermal dissipation compared to asynchronous alternatives operating at similar frequencies.
What are the key thermal considerations when using the ADP2120ACPZ-1.2-R7 in a compact handheld device with limited airflow?
Given its 10-LFCSP-WD package and maximum junction temperature of 125°C, the ADP2120ACPZ-1.2-R7 requires careful layout to ensure adequate heat spreading through the exposed pad. In sealed or poorly ventilated enclosures, continuous operation near 1A output may necessitate thermal vias or proximity to PCB copper planes to prevent overheating, especially at elevated ambient temperatures.
Can the ADP2120ACPZ-1.2-R7 be safely used in automotive applications requiring AEC-Q100 qualification?
The ADP2120ACPZ-1.2-R7 is not inherently qualified to AEC-Q100 standards, as it is a commercial-grade device. While it operates across -40°C to 125°C and may function adequately in some automotive edge cases, designers intending use in safety-critical or high-reliability automotive systems must verify compliance through additional testing or select an appropriate qualified variant.
How does the switching frequency of 1.2MHz in the ADP2120ACPZ-1.2-R7 affect PCB space and component selection?
The 1.2MHz switching frequency enables the use of smaller inductors and ceramic capacitors compared to lower-frequency regulators, significantly reducing board area. However, higher-frequency operation increases electromagnetic interference (EMI) risk, requiring careful filtering and layout to meet noise-sensitive application requirements.
What input voltage range constraints must be observed when designing a system powered by a lithium-ion battery that discharges from 4.2V to 3.0V?
The ADP2120ACPZ-1.2-R7 supports input voltages from 2.3V to 5.5V, making it suitable for this battery range. However, at lower battery states (e.g., below 3.6V), the available headroom decreases, potentially limiting minimum on-time control and affecting transient response performance during load steps.
Is it possible to parallel two ADP2120ACPZ-1.2-R7 devices to increase output current capacity?
The ADP2120ACPZ-1.2-R7 does not support interleaving or master-slave configuration, and paralleling without external current sharing circuitry can lead to uneven load distribution and instability. Therefore, direct parallel operation is not recommended unless augmented with dedicated current-balancing components and extensive validation.
How does the ADP2120ACPZ-1.2-R7 compare to a linear regulator for delivering 1.2V at 1A from a 3.3V source?
Compared to a linear regulator, the ADP2120ACPZ-1.2-R7 reduces power dissipation from 2.3W (in a hypothetical LDO) to approximately 0.24W at 1A, representing a nearly tenfold improvement in thermal efficiency. This makes the buck converter far more viable for sustained high-current applications where heat management is critical.
What precautions should be taken when selecting output capacitance for the ADP2120ACPZ-1.2-R7 to ensure stable operation?
To ensure stability, the total output capacitance must include both effective series resistance (ESR) and equivalent series inductance (ESL). Ceramic capacitors with low ESR are preferred, but if higher capacitance is needed, a small series resistor or a combination of capacitor types may be required to maintain phase margin, particularly at light loads or with very low-ESR bulk capacitors.
Can the ADP2120ACPZ-1.2-R7 operate reliably in environments with frequent input voltage transients such as those caused by USB hot-plugging?
The ADP2120ACPZ-1.2-R7 has a robust input range up to 5.5V, allowing brief excursions beyond normal operation (e.g., 5.25V during USB transient events) without damage. However, sustained overvoltage conditions could stress internal components, so transient suppression diodes or clamping circuits should be considered in sensitive systems.
Does the ADP2120ACPZ-1.2-R7 require external compensation components?
No external compensation network is required for standard operation due to its internally compensated architecture. This simplifies design and improves reliability, though custom tuning is not available, which limits optimization for highly specialized dynamic response requirements.
What is the impact of enabling/disabling the synchronous rectifier feature on the ADP2120ACPZ-1.2-R7’s efficiency?
When operating in forced PWM mode or under moderate-to-high loads, the synchronous rectifier actively improves efficiency by replacing the body diode with a low-resistance MOSFET, reducing conduction losses. Disabling it (if configurable) or allowing automatic switching between sync and async modes at light loads can optimize efficiency across varying load conditions.
How does the moisture sensitivity level (MSL) of 3 for the ADP2120ACPZ-1.2-R7 influence manufacturing handling procedures?
With an MSL of 3 and a floor life of 168 hours, the ADP2120ACPZ-1.2-R7 must be stored in dry packaging and assembled within seven days of opening if ambient humidity exceeds 60%. Manufacturers must follow JEDEC J-STD-033 guidelines, including bake-out steps if storage time exceeds threshold, to prevent popcorn cracking during reflow.
Is the ADP2120ACPZ-1.2-R7 suitable for battery-powered IoT nodes that require long-term stability and minimal quiescent current?
While the ADP2120ACPZ-1.2-R7 offers good average efficiency, its lack of deep sleep or ultra-low quiescent current modes makes it less ideal for ultralow-power applications. For such designs, a modern DC-DC converter with shutdown currents in the nA range would be preferable despite slightly lower peak efficiency.
What are the implications of using the ADP2120ACPZ-1.2-R7 in a multi-rail system with tightly coupled power sequencing?
Since the ADP2120ACPZ-1.2-R7 has no built-in enable sequencing or tracking capability, designers must implement external control logic to ensure proper turn-on/off timing relative to other rails. Failure to do so may result in undefined behavior in downstream ICs sensitive to supply ramp rates or turn-on order.
How does the choice of inductor value affect transient response and efficiency in a system using the ADP2120ACPZ-1.2-R7?
An inductor with too low a value increases ripple current and switching losses, while one with excessive inductance slows down load transient response due to longer current buildup times. For optimal balance, a 0.47µH to 1µH shielded ferrite inductor rated for >1.5A is typically suitable given the 1.2MHz frequency and 1.25A output rating of the ADP2120ACPZ-1.2-R7.
Can the ADP2120ACPZ-1.2-R7 be used as a pre-regulator before a low-dropout (LDO) stage to improve overall system efficiency?
Yes, the ADP2120ACPZ-1.2-R7 can serve as an efficient pre-regulator feeding a downstream LDO, reducing the LDO’s dropout voltage margin and thus improving end-to-end efficiency—especially beneficial when the LDO must regulate a narrow differential. However, care must be taken to avoid coupling noise from the switching node into the LDO input.
What documentation or reference designs accompany the ADP2120ACPZ-1.2-R7 to aid in initial evaluation?
Analog Devices provides evaluation boards and detailed application notes that illustrate layout best practices, BOM recommendations, and performance benchmarks for the ADP2120ACPZ-1.2-R7. These resources help accelerate prototype development and reduce risk during early-stage design integration.
Are there any known limitations regarding minimum load current for stable regulation with the ADP2120ACPZ-1.2-R7?
The ADP2120ACPZ-1.2-R7 maintains stable regulation from zero load up to 1.25A without external minimum load requirements. Unlike some converters that exhibit instability at light loads, this device uses a fixed-frequency PWM architecture that ensures predictable behavior even under no-load conditions, simplifying system design.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. ADP2120ACPZ-1.2-R7

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

ADP2120ACPZ-1.2-R7 Datasheet PDF

Download ADP2120ACPZ-1.2-R7 pdf datasheets and Analog Devices Inc. documentation for ADP2120ACPZ-1.2-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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ADP2120ACPZ-1.2-R7 Image

ADP2120ACPZ-1.2-R7

Analog Devices Inc.
98D-ADP2120ACPZ-1.2-R7

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