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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Analog Devices Inc. ADP1872ARMZ-0.6-R7

Name: ADP1872ARMZ-0.6-R7
Brand: Analog Devices Inc.
SKU: ADP1872ARMZ-0.6-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP1872ARMZ-0.6-R7

Manufacturer:: Analog Devices Inc.

Category:: DC DC Switching Controllers

Package:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Datasheet:: ADP1872ARMZ-0.6-R7.pdf

Description:: IC REG CTRLR BUCK 10MSOP

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Product details

Overview

ADP1872ARMZ-0.6-R7 from Analog Devices is a synchronous current-mode PWM buck controller with constant on-time architecture, designed for high-efficiency DC/DC conversion in N-channel MOSFET-based power stages. It delivers 0.6 V reference accuracy (±1.0%), supports 600 kHz switching frequency, operates from 2.75 V to 20 V input, and regulates output down to 0.6 V - ideal for DSP core supplies and telecom point-of-load applications.

For engineers reviewing the ADP1872ARMZ-0.6-R7 datasheet, ADP1872ARMZ-0.6-R7 pinout, ADP1872ARMZ-0.6-R7 application, or ADP1872ARMZ-0.6-R7 equivalent, this controller offers valley current-mode control, integrated bootstrap diode, resistor-programmable current-sense gain, thermal overload protection, and precharged-load startup capability - critical for stable low-voltage, high-current regulation in space-constrained industrial and networking systems.

Technical Context

The ADP1872ARMZ-0.6-R7 implements a pseudo-fixed-frequency, constant on-time valley current-mode control scheme optimized for low-duty-cycle operation and fast transient response. Its architecture eliminates the need for an external current-sense resistor and enables precise current limiting via DRVL-connected programming resistors (e.g., 47 kΩ for 3.0 V/V gain).

It integrates high- and low-side gate drivers with sub-3 Ω source/sink resistance, internal bootstrap rectifier, precision enable threshold (235–330 mV), and soft-start period of 3.0 ms. The IC operates across −40°C to +125°C junction temperature and uses a 10-lead MSOP package with separate analog (GND) and power (PGND) ground pins to minimize noise coupling.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	600 kHz - fixed nominal frequency enabling compact magnetics and predictable EMI profile.
Reference Voltage	0.6 V ±1.0% - enables accurate regulation of low-output voltages such as 0.8 V, 1.2 V, or 1.8 V with minimal feedback divider error.
Input Voltage Range	2.75 V to 20 V - supports wide-range inputs including 3.3 V, 5 V, 12 V, and 15 V rails without external regulators.
Current-Sense Gain	Programmable (e.g., 3.0 V/V with 47 kΩ) - allows optimization of current-limit threshold and loop stability across MOSFET R_DS(on) variations.
Shutdown Current	140 µA - ensures ultra-low quiescent power during system sleep or standby modes.
Operating Temperature	−40°C to +125°C - qualified for industrial and telecom environments with extended thermal margins.
Package	10-Lead MSOP - surface-mount footprint compatible with automated assembly and thermally enhanced PCB layouts.

Pinout & Package

ADP1872ARMZ-0.6-R7 is housed in a 10-lead MSOP package with exposed pad for thermal performance. Pin assignments are validated per Analog Devices Rev. B datasheet Figure 3 and Table 4.

Pin/Terminal	Circuit Role	Design Meaning
VIN	High-side power input	Connects to drain of upper N-MOSFET; accepts up to 20 V, decoupled via C_IN to PGND.
COMP/EN	Error amplifier output / enable input	Drives compensation network; <285 mV disables IC; open-drain compatible with logic-level sequencing.
FB	Feedback node	Non-inverting input of error amp; connects to resistor divider from V_OUT to set regulated output voltage.
GND	Analog ground reference	Low-noise return for FB, COMP, and internal bias circuits; must be isolated from PGND plane.
VDD	Bias supply input	2.75–5.5 V supply for logic and gate drivers; requires 1 µF bypass to PGND and 0.1 µF to GND.
DRVL	Lower-side gate driver output / current-sense gain setting	Drives N-MOSFET source; resistor from DRVL to PGND sets current-sense amplifier gain (e.g., 47 kΩ = 3.0 V/V).
PGND	Power ground	Return path for lower MOSFET, DRVH, DRVL, and SW node; ties to power plane under IC for low-inductance layout.
DRVH	Upper-side gate driver output	Drives N-MOSFET gate; bootstrapped from BST–SW; capable of 1.5 A peak sink/source with <30 ns rise/fall times.
SW	Switch node	Connection between upper and lower MOSFETs; high dv/dt node requiring tight layout and low-ESR output capacitor placement.
BST	Bootstrap supply	Internal diode connects VDD to BST; external capacitor (BST to SW) provides floating supply for high-side driver.

Key Features

Feature	Design Value
Valley current-mode control	Enables stable operation at low duty cycles (<10%) and improves light-load transient response without slope compensation.
Integrated bootstrap diode	Eliminates external Schottky diode in most designs, reducing BOM count and layout area while maintaining robust high-side drive.
Resistor-programmable current-sense gain	Allows precise current limit tuning (e.g., 3.0–26 V/V) to match MOSFET R_DS(on), improving overcurrent protection accuracy.
Start-up into precharged output	Prevents reverse current flow during soft start when V_OUT is already biased, essential for hot-swap and multi-rail sequencing.
Thermal shutdown with hiccup mode	Triggers at 155°C with 15°C hysteresis and enters 6 ms hiccup cycle to protect MOSFETs and inductor during sustained overload.

Applications

Telecom Point-of-Load Supply	DSP Core Power
Use Scenario: Regulating 1.2 V or 1.8 V for FPGA or ASIC cores in 48 V telecom line cards with strict efficiency and thermal requirements. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing high-current, low-voltage rail with fast load-step response. Use Value: 95% peak efficiency at 1.8 V/5 A (Figure 5), 600 kHz switching enables small 1.2 µH inductors and reduces output capacitance needs.	Use Scenario: Powering TMS320C6000-series DSP cores requiring tightly regulated 1.0–1.4 V supplies with <±1% tolerance. IC Role / Device Role / Timing Role: Precision voltage regulator using 0.6 V reference and valley current sensing for dynamic current monitoring. Use Value: ±1.0% reference accuracy and −40°C to +125°C operation ensure stable core voltage across environmental extremes.
Mid-Range Server VRM	Set-Top Box SoC Supply
Use Scenario: Generating 0.85 V or 0.9 V for server CPU I/O or memory interface rails where low dropout and high PSRR matter. IC Role / Device Role / Timing Role: Secondary buck controller in multi-phase or discrete VRM architecture with independent loop control. Use Value: Minimum on-time of 82 ns (VIN = 20 V) supports high input-to-output ratios while maintaining regulation stability.	Use Scenario: Delivering 3.3 V or 5 V to multimedia SoCs in consumer STBs with cost-sensitive BOM and thermal constraints. IC Role / Device Role / Timing Role: Main DC/DC controller driving dual N-MOSFET stage with integrated bootstrap and no external sense resistor. Use Value: 140 µA shutdown current and PSM-compatible design (shared with ADP1873) reduce standby power in always-on devices.

Telecom Point-of-Load Supply

DSP Core Power

Use Scenario: Regulating 1.2 V or 1.8 V for FPGA or ASIC cores in 48 V telecom line cards with strict efficiency and thermal requirements.

IC Role / Device Role / Timing Role: Primary synchronous buck controller managing high-current, low-voltage rail with fast load-step response.

Use Value: 95% peak efficiency at 1.8 V/5 A (Figure 5), 600 kHz switching enables small 1.2 µH inductors and reduces output capacitance needs.

Use Scenario: Powering TMS320C6000-series DSP cores requiring tightly regulated 1.0–1.4 V supplies with <±1% tolerance.

IC Role / Device Role / Timing Role: Precision voltage regulator using 0.6 V reference and valley current sensing for dynamic current monitoring.

Use Value: ±1.0% reference accuracy and −40°C to +125°C operation ensure stable core voltage across environmental extremes.

Mid-Range Server VRM

Set-Top Box SoC Supply

Use Scenario: Generating 0.85 V or 0.9 V for server CPU I/O or memory interface rails where low dropout and high PSRR matter.

IC Role / Device Role / Timing Role: Secondary buck controller in multi-phase or discrete VRM architecture with independent loop control.

Use Value: Minimum on-time of 82 ns (VIN = 20 V) supports high input-to-output ratios while maintaining regulation stability.

Use Scenario: Delivering 3.3 V or 5 V to multimedia SoCs in consumer STBs with cost-sensitive BOM and thermal constraints.

IC Role / Device Role / Timing Role: Main DC/DC controller driving dual N-MOSFET stage with integrated bootstrap and no external sense resistor.

Use Value: 140 µA shutdown current and PSM-compatible design (shared with ADP1873) reduce standby power in always-on devices.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADP1873ARMZ-0.6-R7	Includes Power Saving Mode (PSM) for pulse-skipping at light loads; identical pinout, frequency, and reference specs.	Preferred for battery-backed or energy-sensitive systems requiring >90% efficiency below 100 mA load.	Select ADP1873ARMZ-0.6-R7 if PSM functionality is required; otherwise ADP1872ARMZ-0.6-R7 offers simpler control and marginally lower quiescent current in forced-PWM mode.
LM5116PWPR	Wide-input (6–100 V), current-mode controller with external high-side driver; no integrated bootstrap diode or 0.6 V reference.	Suitable for higher-input industrial or automotive applications where VIN exceeds 20 V.	Choose LM5116PWPR only when input voltage exceeds 20 V or when external high-side driver flexibility is needed; not drop-in compatible.

Compared with ADP1873ARMZ-0.6-R7, the ADP1872ARMZ-0.6-R7 lacks PSM but offers tighter control loop consistency under PWM-only operation; versus LM5116PWPR, it trades input voltage range for integration, reduced component count, and superior low-V_OUT accuracy - making it optimal for sub-20 V, high-precision point-of-load designs.

Availability

ADP1872ARMZ-0.6-R7 is available at Aetrix Electronics and suitable for telecom infrastructure, DSP power management, and set-top box SoC supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADP1872ARMZ-0.6-R7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADP1872/ADP1873 product line was engineered for high-efficiency, low-voltage DC/DC conversion in space-constrained telecom, server, and consumer electronics - emphasizing precision regulation, thermal resilience, and simplified layout through integrated features like bootstrap diodes and programmable current sensing.

FAQ

What is the switching frequency of the ADP1872ARMZ-0.6-R7?

The ADP1872ARMZ-0.6-R7 is factory-configured for a nominal 600 kHz switching frequency, as indicated by the "-0.6" suffix. This frequency is pseudo-fixed and remains stable across line, load, and temperature variations - verified in Figures 23 and 28 of the Rev. B datasheet - enabling predictable filter design and EMI filtering.

Does the ADP1872ARMZ-0.6-R7 support precharged output startup?

Yes, the ADP1872ARMZ-0.6-R7 supports startup into a precharged output via its reverse-current protection circuitry during soft start. This prevents inrush current and potential damage when V_OUT is already biased - a key requirement in hot-swap and multi-rail power systems where sequencing is critical.

What is the purpose of the DRVL pin on the ADP1872ARMZ-0.6-R7?

The DRVL pin on the ADP1872ARMZ-0.6-R7 serves two functions: it drives the gate of the lower-side N-channel MOSFET, and it sets the current-sense amplifier gain via an external resistor to PGND. For example, a 47 kΩ resistor yields 3.0 V/V gain - directly scaling the sensed current for accurate overcurrent protection and loop compensation.

Can the ADP1872ARMZ-0.6-R7 operate with a 3.3 V bias supply?

Yes, the ADP1872ARMZ-0.6-R7 accepts a VDD bias supply from 2.75 V to 5.5 V, fully covering 3.3 V operation. At 3.3 V, gate drive strength remains sufficient for most N-MOSFETs, and all specifications - including 0.6 V reference accuracy and 140 µA shutdown current - are guaranteed across the full temperature range.

How does the ADP1872ARMZ-0.6-R7 differ from the ADP1873ARMZ-0.6-R7?

The ADP1872ARMZ-0.6-R7 and ADP1873ARMZ-0.6-R7 share identical pinout, frequency, reference, and protection features - but the ADP1873ARMZ-0.6-R7 adds Power Saving Mode (PSM) for pulse-skipping at light loads. The ADP1872ARMZ-0.6-R7 operates exclusively in forced-PWM mode, offering more deterministic timing and slightly lower quiescent current in that regime.

ADP1872ARMZ-0.6-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Type:: Transistor Driver

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Number of Outputs:: 1

Output Phases:: 1

Voltage - Supply (Vcc/Vdd):: 2.75V ~ 20V

Frequency - Switching:: 600kHz

Duty Cycle (Max):: 65%

Synchronous Rectifier:: Yes

Clock Sync:: No

Serial Interfaces:: -

Control Features:: Enable

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-MSOP

ADP1872ARMZ-0.6-R7 FAQ

1.How can I place an order for ADP1872ARMZ-0.6-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP1872ARMZ-0.6-R7 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 ADP1872ARMZ-0.6-R7 reliable?

The price and inventory of ADP1872ARMZ-0.6-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1872ARMZ-0.6-R7 is usually 5 days.

3.What payment methods are accepted for ADP1872ARMZ-0.6-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1872ARMZ-0.6-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP1872ARMZ-0.6-R7?

ADP1872ARMZ-0.6-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP1872ARMZ-0.6-R7 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 ADP1872ARMZ-0.6-R7?

For technical support, including ADP1872ARMZ-0.6-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1872ARMZ-0.6-R7 requirements.

6.How does Aetrix verify that ADP1872ARMZ-0.6-R7 is sourced from the original manufacturer or authorized distributors?

All ADP1872ARMZ-0.6-R7 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 ADP1872ARMZ-0.6-R7 meets industry standards.

7.What is the process for return or replacement of ADP1872ARMZ-0.6-R7?

All ADP1872ARMZ-0.6-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1872ARMZ-0.6-R7, 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 ADP1872ARMZ-0.6-R7 part is unused and in its original packaging.

Return procedure for ADP1872ARMZ-0.6-R7:

1.Submit a request within 90 days.

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

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