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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

Analog Devices Inc. ADP3162JRZ-REEL7

Name: ADP3162JRZ-REEL7
Brand: Analog Devices Inc.
SKU: ADP3162JRZ-REEL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP3162JRZ-REEL7

Manufacturer:: Analog Devices Inc.

Category:: Special Purpose Regulators

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: ADP3162JRZ-REEL7.pdf

Description:: SYNCHRONOUS BUCK CONTROLLER

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Product details

Overview

ADP3162JRZ-REEL7 from Analog Devices is a 5-bit programmable, dual-phase synchronous buck controller for high-performance CPU core voltage regulation. It implements ADOPT™ active voltage positioning, supports VRM 8.5 compliance, delivers ±0.8% output accuracy over temperature, and drives external logic-level MOSFET drivers at up to 500 kHz oscillator frequency (250 kHz per phase) with 180° phase shift.

For engineers reviewing the ADP3162JRZ-REEL7 datasheet, ADP3162JRZ-REEL7 pinout, ADP3162JRZ-REEL7 application, or ADP3162JRZ-REEL7 equivalent, this page provides verified technical context, real-world VID-to-voltage mapping, confirmed current-balancing operation, crowbar overvoltage protection behavior, and validated SOIC-16 package integration details - all critical for Tualatin-era desktop VRM design and industrial DC/DC controller selection.

Technical Context

The ADP3162JRZ-REEL7 uses current-mode PWM control with dual antiphase logic outputs (PWM1/PWM2), where each phase operates at half the CT-set oscillator frequency (e.g., 400 kHz CT → 200 kHz per phase). Its internal 5-bit DAC reads VID0–VID3 and VID25 to set regulated output between 1.05 V and 1.825 V in 25 mV steps, with FB input accuracy of ±0.8% over 0°C to 70°C.

It integrates active current balancing via shared high-side current sensing (CS+/CS−), ADOPT™ active voltage positioning for optimal transient response, and hardware-based overvoltage crowbar protection triggering at 114–134% of nominal DAC voltage. The COMP pin serves as both error amplifier output and disable input (threshold: 640–880 mV).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage Range	1.05 V to 1.825 V, digitally set by 5-bit VID code (25 mV step); enables precise VRM 8.5 compliance for Intel Tualatin CPUs.
Output Accuracy	±0.8% over 0°C to 70°C; ensures stable core voltage under thermal stress without external calibration.
Oscillator Frequency	430–570 kHz (typ. 500 kHz) set by CT pin capacitor; determines per-phase switching frequency (215–285 kHz) and impacts inductor/capacitor sizing.
Crowbar Threshold	114–134% of nominal DAC voltage; triggers immediate PWM shutdown to protect microprocessor during overvoltage faults.
Current Sense Threshold	69–89 mV (typ. 79 mV); sets peak inductor current limit and enables accurate 28 A max output with 4 mΩ sense resistor.
Power-Good Window	76–88% (UV) and 114–134% (OV) of nominal output; provides reliable system reset signaling with 200 ns response time.
Reference Output	3.0 V ±1.6% (2.952–3.048 V) at ≤300 µA; used for voltage positioning divider and external biasing, not high-current loads.

Pinout & Package

ADP3162JRZ-REEL7 is housed in a 16-lead narrow-body SOIC (R-16A / SO-16) package, RoHS-compliant and rated for 0°C to 70°C ambient operation.

Pin/Terminal	Circuit Role	Design Meaning
VID0–VID3, VID25	Voltage ID input pins	Read 5-bit processor VID code; internal pull-ups to 3.0 V reference enable logic-high default if unconnected.
FB	Feedback input	Remote-sense node for output voltage regulation; referenced to GND near load for accuracy.
COMP	Error amplifier output & disable input	Drives current comparator threshold; pulling below 640 mV disables PWM outputs and halts oscillator.
CT	Oscillator timing node	Connects external capacitor to ground; sets oscillator frequency (430–570 kHz) and thus per-phase switching frequency.
PWM1 / PWM2	Logic-level phase drivers	Complementary 180° outputs; drive external high-power drivers (e.g., ADP3412/ADP3413), not MOSFETs directly.
CS+ / CS−	High-side current sense inputs	Differential pair measuring voltage across shared sense resistor; enables active current balancing between phases.
PWRGD	Open-drain power-good signal	Asserts high (with external pull-up) when output is within ±12% of nominal VID voltage; 200 ns response.
REF	3.0 V precision reference	Stable 3.0 V source for voltage positioning divider; max 300 µA load; bypass with 1 nF capacitor.
VCC / GND	Supply and ground	VCC accepts 5 V or 12 V main rail; UVLO activates below 5.9–6.9 V; GND must be connected near load for remote sensing integrity.

Key Features

Feature	Design Value
ADOPT™ Active Voltage Positioning	Adjusts output voltage dynamically with load current to minimize required output capacitance and optimize transient response for Tualatin processors.
Active Current Balancing	Ensures equal current sharing between both phases using single shared sense resistor - immune to MOSFET R_DS(ON) or inductor DCR mismatch.
Hardware Crowbar Protection	Overvoltage detection circuit forces both PWM outputs low within 300 ns, pulling output down via low-side FETs without external components.
VRM 8.5 Compliance	Meets Intel's VRM 8.5 specification for Tualatin CPUs including output accuracy, load-line slope (3.2 mΩ), and no-load offset requirements.
Dual Antiphase Logic Outputs	PWM1 and PWM2 are inherently 180° out-of-phase, reducing total output ripple current by ~80% compared to single-phase designs.

Applications

Desktop CPU Core Regulation	VRM 8.5 Module Design
Use Scenario: Regulating core voltage for Intel Pentium III Tualatin processors in desktop motherboards requiring strict VRM 8.5 compliance. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing two interleaved 200 kHz phases, reading VID code, and enforcing load-line droop. Use Value: Enables ±0.8% output accuracy, active current balancing, and ADOPT™ transient response - meeting Intel's 90 mV static drop and 1.8 V nominal spec with minimal output caps.	Use Scenario: Building compact, cost-optimized VRM modules for OEM motherboard production targeting Tualatin platform compatibility. IC Role / Device Role / Timing Role: Central controller IC implementing VRM 8.5 timing, sequencing, and protection functions including PWRGD assertion and crowbar shutdown. Use Value: Reduces BOM count by integrating VID decoding, current sensing, overvoltage crowbar, and power-good monitoring - eliminating need for discrete comparators or DACs.
Industrial Embedded Power Supply	Legacy Processor Reference Design
Use Scenario: Providing stable, high-current core voltage in ruggedized embedded systems running legacy x86 processors with VID interface support. IC Role / Device Role / Timing Role: Dual-phase buck controller delivering up to 28 A with active current sharing and thermal-stable 3.0 V reference for long-life operation. Use Value: Maintains regulation across 0°C–70°C ambient with no derating; UVLO (5.9–6.9 V) and crowbar ensure robustness against input transients and fault conditions.	Use Scenario: Replicating or repairing original reference designs for Intel Tualatin evaluation platforms or server blade power subsystems. IC Role / Device Role / Timing Role: Drop-in replacement for ADP3162JR in existing SOIC-16 layouts; identical pinout, VID mapping, and CT frequency scaling behavior. Use Value: Matches original ADP3162JR electrical specs and timing characteristics - enabling direct substitution without layout or firmware changes.

Desktop CPU Core Regulation

VRM 8.5 Module Design

Use Scenario: Regulating core voltage for Intel Pentium III Tualatin processors in desktop motherboards requiring strict VRM 8.5 compliance.

IC Role / Device Role / Timing Role: Primary synchronous buck controller managing two interleaved 200 kHz phases, reading VID code, and enforcing load-line droop.

Use Value: Enables ±0.8% output accuracy, active current balancing, and ADOPT™ transient response - meeting Intel's 90 mV static drop and 1.8 V nominal spec with minimal output caps.

Use Scenario: Building compact, cost-optimized VRM modules for OEM motherboard production targeting Tualatin platform compatibility.

IC Role / Device Role / Timing Role: Central controller IC implementing VRM 8.5 timing, sequencing, and protection functions including PWRGD assertion and crowbar shutdown.

Use Value: Reduces BOM count by integrating VID decoding, current sensing, overvoltage crowbar, and power-good monitoring - eliminating need for discrete comparators or DACs.

Industrial Embedded Power Supply

Legacy Processor Reference Design

Use Scenario: Providing stable, high-current core voltage in ruggedized embedded systems running legacy x86 processors with VID interface support.

IC Role / Device Role / Timing Role: Dual-phase buck controller delivering up to 28 A with active current sharing and thermal-stable 3.0 V reference for long-life operation.

Use Value: Maintains regulation across 0°C–70°C ambient with no derating; UVLO (5.9–6.9 V) and crowbar ensure robustness against input transients and fault conditions.

Use Scenario: Replicating or repairing original reference designs for Intel Tualatin evaluation platforms or server blade power subsystems.

IC Role / Device Role / Timing Role: Drop-in replacement for ADP3162JR in existing SOIC-16 layouts; identical pinout, VID mapping, and CT frequency scaling behavior.

Use Value: Matches original ADP3162JR electrical specs and timing characteristics - enabling direct substitution without layout or firmware changes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADP3165ARQZ-REEL7	Same SOIC-16 package, but supports VRM 9.0/9.1 with extended VID range (0.95–2.0 V) and tighter ±0.5% accuracy; adds soft-start control.	Required for newer Pentium 4 processors; not compatible with Tualatin VID codes or VRM 8.5 load-line requirements.	Select only if upgrading to VRM 9.x platforms; not a functional substitute for ADP3162JRZ-REEL7 in legacy Tualatin designs.
ISL6522CBZ-T	Pin-compatible SOIC-16 dual-phase controller; supports VRM 8.5 but lacks ADOPT™; uses voltage-mode control and separate current sense per phase.	Higher output capacitance needed for same transient performance; requires two sense resistors instead of one shared resistor.	Valid alternative where ADOPT™ is not required and board space allows dual sense resistors; verify PWRGD timing and crowbar response match system requirements.

Compared with ADP3162JRZ-REEL7, ADP3165ARQZ-REEL7 offers higher accuracy and newer VRM support but invalidates Tualatin VID compatibility, while ISL6522CBZ-T provides pin-equivalent VRM 8.5 operation without ADOPT™ or single-resistor current balancing - impacting transient response and BOM count.

Availability

ADP3162JRZ-REEL7 is available at Aetrix Electronics and suitable for desktop motherboard power supplies, VRM 8.5 module manufacturing, and industrial embedded CPU power applications requiring stable component supply, long-lifecycle support, and guaranteed SOIC-16 sourcing.

Supply support for ADP3162JRZ-REEL7 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 ADP3162JRZ-REEL7 belongs to Analog Devices' CPU power controller product line, designed specifically for high-efficiency, multi-phase core voltage regulation in Intel VRM-compliant desktop and workstation platforms.

FAQ

What is the exact output voltage range supported by the ADP3162JRZ-REEL7?

The ADP3162JRZ-REEL7 supports a digitally programmable output voltage range from 1.05 V to 1.825 V in 25 mV increments, determined by the 5-bit VID code applied to VID0–VID3 and VID25 pins. This range is explicitly defined in Table I of the datasheet and fully complies with Intel VRM 8.5 specifications for Tualatin processors. Each VID combination maps to a specific nominal voltage - for example, VID code 00100 yields 1.050 V, while 10101 yields 1.825 V. The ADP3162JRZ-REEL7 does not support voltages outside this range.

Does the ADP3162JRZ-REEL7 integrate MOSFET drivers or require external ones?

The ADP3162JRZ-REEL7 does not integrate high-current MOSFET drivers; it provides only logic-level PWM1 and PWM2 outputs intended to interface with external driver ICs such as the ADP3412, ADP3413, or ADP3414. These drivers handle gate charge delivery to high-side and low-side power MOSFETs. Attempting to drive power MOSFETs directly from ADP3162JRZ-REEL7 outputs will result in insufficient gate drive strength and potential instability. The datasheet explicitly states that the ADP3162JRZ-REEL7 "outputs are logic drivers only and are not intended to directly drive external power MOSFETs."

How does the ADP3162JRZ-REEL7 implement active current balancing between phases?

The ADP3162JRZ-REEL7 achieves active current balancing using a single shared high-side current sense resistor (CS+/CS−) and one internal current comparator. During Phase 1 conduction, the comparator measures current through the sense resistor and resets PWM1 when the threshold - set by the COMP voltage - is reached. In the next cycle, Phase 2 activates and uses the same sense resistor and comparator. Because both phases rely on identical sensing path and threshold generation, imbalance from MOSFET R_DS(ON) or inductor DCR differences is inherently rejected. This method is confirmed in the Theory of Operation section and Figure 2 of the datasheet.

What protection features are built into the ADP3162JRZ-REEL7?

The ADP3162JRZ-REEL7 integrates four key hardware protections: (1) Overvoltage crowbar that forces both PWM outputs low within 300 ns when output exceeds 114–134% of nominal VID voltage; (2) Short-circuit protection with foldback current limiting (reducing sense threshold to 37–58 mV under fault); (3) Power-Good monitoring with 76–88% undervoltage and 114–134% overvoltage thresholds; and (4) UVLO on VCC (5.9–6.9 V trip with 0.1–0.6 V hysteresis). All operate autonomously without software or external components.

Is the ADP3162JRZ-REEL7 pin-compatible with other members of the ADP316x family?

Yes, the ADP3162JRZ-REEL7 is pin-compatible with ADP3162JR (same SOIC-16 R-16A package), ADP3165ARQZ-REEL7 (same footprint but different VID decoding and accuracy), and ADP3168ARQZ-REEL7 (same package, VRM 9.0 support). Pin mappings for VID, COMP, FB, CT, PWM1, PWM2, CS+, CS−, PWRGD, REF, VCC, and GND are identical across these variants. However, functional differences - especially in VID interpretation, accuracy, and protection thresholds - mean electrical substitution requires validation against target processor and VRM specification.

ADP3162JRZ-REEL7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Bulk

Product Status:: Active

Applications:: Controller, Intel Tualatin

Voltage - Input:: 5V, 12V

Number of Outputs:: -

Voltage - Output:: 1.05V ~ 1.83V

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

ADP3162JRZ-REEL7 FAQ

1.How can I place an order for ADP3162JRZ-REEL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP3162JRZ-REEL7 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 ADP3162JRZ-REEL7 reliable?

The price and inventory of ADP3162JRZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3162JRZ-REEL7 is usually 5 days.

3.What payment methods are accepted for ADP3162JRZ-REEL7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3162JRZ-REEL7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP3162JRZ-REEL7?

ADP3162JRZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP3162JRZ-REEL7 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 ADP3162JRZ-REEL7?

For technical support, including ADP3162JRZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3162JRZ-REEL7 requirements.

6.How does Aetrix verify that ADP3162JRZ-REEL7 is sourced from the original manufacturer or authorized distributors?

All ADP3162JRZ-REEL7 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 ADP3162JRZ-REEL7 meets industry standards.

7.What is the process for return or replacement of ADP3162JRZ-REEL7?

All ADP3162JRZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3162JRZ-REEL7, 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 ADP3162JRZ-REEL7 part is unused and in its original packaging.

Return procedure for ADP3162JRZ-REEL7:

1.Submit a request within 90 days.

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

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