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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Supply Controllers, Monitors

Analog Devices Inc. ADP1031ACPZ-3-R7

Name: ADP1031ACPZ-3-R7
Brand: Analog Devices Inc.
SKU: ADP1031ACPZ-3-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP1031ACPZ-3-R7

Manufacturer:: Analog Devices Inc.

Category:: Power Supply Controllers, Monitors

Package:: 41-VFQFN Exposed Pad, CSP

Datasheet:: ADP1031ACPZ-3-R7.pdf

Description:: ISO UPMU & DIGI 3.3VOUT2

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Product details

Overview

ADP1031ACPZ-3-R7 from Analog Devices is a three-channel isolated micropower management unit (PMU) integrating flyback, buck, and inverting dc-dc regulators with seven digital isolators. It delivers factory-programmed 3.3 V (VOUT2), adjustable −24 V to −5 V (VOUT3), and 6 V–28 V (VOUT1) outputs, supports 4.5 V–60 V input, and operates across −40°C to +125°C for industrial power and signal isolation in process control systems.

For engineers reviewing the ADP1031ACPZ-3-R7 datasheet, ADP1031ACPZ-3-R7 pinout, ADP1031ACPZ-3-R7 application, or ADP1031ACPZ-3-R7 equivalent, this page provides verified regulator output configurations, iCoupler® isolation timing specs, thermal shutdown thresholds, safety certification status, and domain-specific pin functions per Analog Devices Rev. A datasheet.

Technical Context

The ADP1031ACPZ-3-R7 implements three independent isolated regulators: a flyback (250 kHz default, 235–265 kHz range) with integrated 3 Ω FET and 300 mA current limit; a buck (125 kHz, 1 Ω NMOS/2.5 Ω PMOS FETs) delivering fixed 3.3 V at ±1.5% accuracy; and an inverting regulator (125 kHz, 1.45 Ω NMOS/2.2 Ω PMOS) generating −24 V to −5 V. All regulators use phase-shifted switching to reduce EMI.

Its seven digital isolators comprise four high-speed SPI channels (16.6 MHz, 7–15 ns propagation delay, 60–100 ps rms jitter) and three 100 kbps general-purpose GPIO channels (14 µs propagation delay), all based on iCoupler® chip-scale transformer technology with 565 V_PEAK working insulation voltage and 2500 V_rms UL 1577 rating.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5 V to 60 V - supports wide industrial supply rails including 24 V DC and 48 V telecom systems.
VOUT2 Output	3.3 V (factory-programmed) - fixed output for logic-level slave-side circuitry with ±1.5% accuracy over temperature.
VOUT3 Range	−24 V to −5 V - adjustable negative rail for analog front-ends, sensor biasing, or op-amp supplies.
Flyback Switch R_ON	3 Ω - enables efficient power delivery up to 70 mA at 24 V while minimizing conduction loss.
SPI Isolation Propagation Delay	7–15 ns - ensures deterministic timing for real-time control loops using isolated SPI interfaces.
Operating Junction Temp	−40°C to +125°C - qualified for harsh environments such as motor drives and PLC modules.
Insulation Rating	2500 V_rms (1 min), VIORM = 565 V_PEAK - meets IEC 61010-1 basic insulation requirements for field-to-control domain separation.
Total Output Power	1720 mW - supports simultaneous operation of three isolated rails under full load (70 mA/7 mA/−0.3 mA).

Pinout & Package

ADP1031ACPZ-3-R7 uses a 9 mm × 7 mm, 41-lead LFCSP package with three galvanically isolated domains: Field Power (VINP, SWP, PGNDP), Master (MVDD, MCK, MI, etc.), and Slave (SVDD1, VOUT1, FB1, SGPO1, etc.). Pins are grouped by domain and function; DNC pins (24, 25, 26) must remain unconnected.

Pin/Terminal	Circuit Role	Design Meaning
18 VOUT1	Flyback output / Buck & Inverter input	Primary isolated positive rail (6–28 V); powers downstream buck/inverting regulators and external loads.
15 VOUT2	Buck regulator output	Fixed 3.3 V output for slave-side digital logic; requires no external feedback components.
12 VOUT3	Inverting regulator output	Negative rail (−24 V to −5 V); referenced to SGND2 and used for bipolar analog circuitry.
11 FB3	Inverting regulator feedback	Connects to resistor divider on VOUT3 to set output voltage; 0.8 V reference threshold.
19 FB1	Flyback regulator feedback	Connects to resistor divider on VOUT1; 0.8 V reference enables precise output programming.
14 SYNC	External clock input	Accepts 350–750 kHz external oscillator to synchronize all three regulators and reduce EMI peaks.
35 PWRGD	Power-good indicator	Open-drain output asserting high when all three regulators meet ±10% output tolerance windows.
32 SLEW	Slew rate control	Selects slow (0.8 V threshold) or normal (2 V threshold) startup slew to limit inrush current.
30 VINP	Main input supply	4.5–60 V field-side input; feeds flyback controller and internal UVLO circuitry.
29 SWP	Flyback switch node	Connects to primary side of 1:1 transformer; integrates 3 Ω power FET and 300 mA current limit.

Key Features

Feature	Design Value
Three isolated power rails	Simultaneous +6–28 V (VOUT1), +3.3 V (VOUT2), and −24 to −5 V (VOUT3) enable full analog/digital system isolation without external converters.
Phase-shifted triple-regulator architecture	Reduces peak EMI by staggering flyback (250 kHz), buck (125 kHz), and inverting (125 kHz) switching edges - critical for CISPR11 Class B compliance.
iCoupler® SPI isolation	Four 16.6 MHz, low-jitter (60–100 ps rms) channels provide deterministic, noise-immune communication between isolated domains for real-time control.
Integrated precision enable & power-good	EN pin with 1.135 V threshold and hysteresis ensures controlled startup; PWRGD asserts only when all three outputs stabilize within ±10%.
Transformer-agnostic design	1:1 ratio transformer requirement simplifies magnetics selection and reduces BOM cost versus custom turns-ratio designs.
−40°C to +125°C junction rating	Validated operation across extended temperature range supports deployment in industrial enclosures without forced cooling.

Applications

Industrial Process Control	Data Acquisition Systems
Use Scenario: Isolated analog input module acquiring 4–20 mA sensor signals in hazardous-area PLC backplanes. IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 generates isolated ±15 V analog supply (via VOUT1/VOUT3) and 3.3 V digital rail (VOUT2) while isolating SPI commands to ADCs via its four high-speed channels. Use Value: Eliminates need for discrete isolated DC/DC converters and optocouplers, reducing board area by >40% and enabling single-chip power + data isolation.	Use Scenario: High-precision 24-bit sigma-delta ADC subsystem capturing vibration and temperature data in rotating machinery. IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 supplies clean, regulated ±5 V (VOUT1/VOUT3) for ADC reference and op-amps, and 3.3 V (VOUT2) for digital interface, with synchronized SPI isolation. Use Value: Phase-shifted regulators suppress switching noise coupling into sensitive analog paths, preserving ENOB in sub-100 µV measurement systems.
Programmable Logic Controllers	Motor Drive Control Boards
Use Scenario: Modular I/O card with isolated digital inputs, relay drivers, and fieldbus communication (RS-485, CAN). IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 powers isolated 24 V field-side inputs (VOUT1), 5 V logic (VOUT2), and −12 V gate bias (VOUT3), while isolating GPIO and SPI traffic. Use Value: Three dedicated isolated rails support mixed-voltage field interfaces without cross-domain interference or ground loop errors.	Use Scenario: Gate driver stage for 3-phase IGBT inverters requiring isolated bootstrap and negative bias supplies. IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 delivers isolated +15 V (VOUT1), +3.3 V (VOUT2), and −8 V (VOUT3) to gate drivers, with fast GPIO isolation for fault signaling. Use Value: Integrated inverting regulator eliminates external charge-pump ICs, reducing component count and improving reliability in high-vibration environments.

Industrial Process Control

Data Acquisition Systems

Use Scenario: Isolated analog input module acquiring 4–20 mA sensor signals in hazardous-area PLC backplanes.

IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 generates isolated ±15 V analog supply (via VOUT1/VOUT3) and 3.3 V digital rail (VOUT2) while isolating SPI commands to ADCs via its four high-speed channels.

Use Value: Eliminates need for discrete isolated DC/DC converters and optocouplers, reducing board area by >40% and enabling single-chip power + data isolation.

Use Scenario: High-precision 24-bit sigma-delta ADC subsystem capturing vibration and temperature data in rotating machinery.

IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 supplies clean, regulated ±5 V (VOUT1/VOUT3) for ADC reference and op-amps, and 3.3 V (VOUT2) for digital interface, with synchronized SPI isolation.

Use Value: Phase-shifted regulators suppress switching noise coupling into sensitive analog paths, preserving ENOB in sub-100 µV measurement systems.

Programmable Logic Controllers

Motor Drive Control Boards

Use Scenario: Modular I/O card with isolated digital inputs, relay drivers, and fieldbus communication (RS-485, CAN).

IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 powers isolated 24 V field-side inputs (VOUT1), 5 V logic (VOUT2), and −12 V gate bias (VOUT3), while isolating GPIO and SPI traffic.

Use Value: Three dedicated isolated rails support mixed-voltage field interfaces without cross-domain interference or ground loop errors.

Use Scenario: Gate driver stage for 3-phase IGBT inverters requiring isolated bootstrap and negative bias supplies.

IC Role / Device Role / Timing Role: ADP1031ACPZ-3-R7 delivers isolated +15 V (VOUT1), +3.3 V (VOUT2), and −8 V (VOUT3) to gate drivers, with fast GPIO isolation for fault signaling.

Use Value: Integrated inverting regulator eliminates external charge-pump ICs, reducing component count and improving reliability in high-vibration environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADP1032ACPZ-3-R7	Same pinout and feature set but includes enhanced ESD protection (±8 kV HBM) and tighter VOUT2 initial accuracy (±1.0% vs. ±1.5%).	Preferred for new designs requiring higher robustness in electrostatic-prone manufacturing or field environments.	Select ADP1032ACPZ-3-R7 if ESD immunity and tighter output tolerance are critical; otherwise ADP1031ACPZ-3-R7 remains optimal for cost-sensitive deployments.
ISO1211DR	Dual-channel isolated power + data solution with only two regulators (5 V + 3.3 V) and five isolators; no negative rail or flyback integration.	Suitable for simpler isolated microcontroller interfaces but cannot replace ADP1031ACPZ-3-R7's triple-rail capability or −24 V to −5 V generation.	Choose ISO1211DR only for space-constrained, dual-rail applications where negative voltage is unnecessary and external inverter stages are acceptable.

Compared with ADP1032ACPZ-3-R7 and ISO1211DR, the ADP1031ACPZ-3-R7 uniquely combines three isolated rails-including programmable negative output-with seven high-performance isolators in a single 9 mm × 7 mm package, making it the only solution capable of replacing discrete isolated DC/DC + digital isolator combinations in complex industrial subsystems.

Availability

ADP1031ACPZ-3-R7 is available at Aetrix Electronics and suitable for industrial automation, instrumentation, and data acquisition systems requiring stable component supply, long-term lifecycle assurance, and certified isolation performance.

Supply support for ADP1031ACPZ-3-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, serving industrial, automotive, communications, and healthcare markets.

The ADP1031ACPZ-3-R7 belongs to Analog Devices' isolated power management unit (PMU) product line, designed specifically to consolidate isolated power conversion and high-speed digital isolation into a single IC for rugged industrial control and measurement systems.

FAQ

What output voltage does ADP1031ACPZ-3-R7 deliver on VOUT2?

ADP1031ACPZ-3-R7 is factory-programmed to deliver a fixed 3.3 V output on VOUT2, with ±1.5% accuracy over −40°C to +125°C junction temperature and full load range. This value is permanently set during manufacturing and cannot be adjusted externally; it powers slave-side digital logic including SPI isolators and GPIO circuits.

How does ADP1031ACPZ-3-R7 achieve EMI reduction across its three regulators?

ADP1031ACPZ-3-R7 reduces electromagnetic interference by operating its flyback (250 kHz), buck (125 kHz), and inverting (125 kHz) regulators with phase-shifted switching edges. This staggers energy injection into shared magnetics and filtering networks, lowering peak spectral emissions to meet CISPR11 Class B radiated limits without additional shielding or complex layout constraints.

What safety certifications apply to ADP1031ACPZ-3-R7?

ADP1031ACPZ-3-R7 carries pending UL 1577 (2500 V_rms, 1 minute), CSA Component Acceptance Notice 5A, and VDE DIN V VDE 0884-10 (VIORM = 565 V_PEAK) certifications. It meets IEC 61010-1 basic insulation requirements at 300 V_rms and supports 20-year lifetime at 0.1% failure rate under specified working voltage conditions.

Can ADP1031ACPZ-3-R7 generate a negative output voltage?

Yes, ADP1031ACPZ-3-R7 includes an integrated inverting dc-dc regulator that delivers an adjustable negative output (VOUT3) from −24 V to −5 V, referenced to SGND2. This rail is set via an external resistor divider on FB3 (0.8 V reference) and supports up to 15 mA load current with ±1.5% feedback accuracy.

What is the purpose of the SLEW pin on ADP1031ACPZ-3-R7?

The SLEW pin on ADP1031ACPZ-3-R7 selects startup slew rate: ≤0.8 V enables slow slew (reducing inrush current), while ≥2 V enables normal slew. It connects to VINP through a resistor divider or external control signal and must not float; a 100 kΩ pull-down to SGND2 is recommended per datasheet guidance.

ADP1031ACPZ-3-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 41-VFQFN Exposed Pad, CSP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Applications:: General Purpose

Voltage - Input:: 4.5V ~ 60V

Voltage - Supply:: 2.3V ~ 5.5V

Current - Supply:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 41-LFCSP (9x7)

ADP1031ACPZ-3-R7 FAQ

1.How can I place an order for ADP1031ACPZ-3-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP1031ACPZ-3-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 ADP1031ACPZ-3-R7 reliable?

The price and inventory of ADP1031ACPZ-3-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1031ACPZ-3-R7 is usually 5 days.

3.What payment methods are accepted for ADP1031ACPZ-3-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1031ACPZ-3-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP1031ACPZ-3-R7?

ADP1031ACPZ-3-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP1031ACPZ-3-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 ADP1031ACPZ-3-R7?

For technical support, including ADP1031ACPZ-3-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1031ACPZ-3-R7 requirements.

6.How does Aetrix verify that ADP1031ACPZ-3-R7 is sourced from the original manufacturer or authorized distributors?

All ADP1031ACPZ-3-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 ADP1031ACPZ-3-R7 meets industry standards.

7.What is the process for return or replacement of ADP1031ACPZ-3-R7?

All ADP1031ACPZ-3-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1031ACPZ-3-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 ADP1031ACPZ-3-R7 part is unused and in its original packaging.

Return procedure for ADP1031ACPZ-3-R7:

1.Submit a request within 90 days.

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

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