My Inquiry
My Account
Analog Devices Inc. ADP3162JR
- Part No.:
- ADP3162JR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3162JR.pdf
- Description:
- SYNCHRONOUS BUCK CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:7,192
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP3162JR from Analog Devices is a 5-bit programmable 2-phase synchronous buck controller for high-performance CPU core voltage regulation, supporting 1.05 V to 1.825 V output via VID interface, ±0.8% total output accuracy over 0°C to 70°C, and dual antiphase logic-level PWM outputs driving external high-power drivers in desktop PC VRM 8.5-compliant power supplies for Intel Tualatin processors.
For engineers reviewing the ADP3162JR datasheet, ADP3162JR pinout, ADP3162JR application, or ADP3162JR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated package and pin mapping, confirmed alternative options with functional distinctions, and supply-chain support details specific to OEM and embedded power design workflows.
Technical Context
The ADP3162JR implements current-mode PWM control with fixed-frequency oscillator (430–570 kHz typical, set by external CT capacitor), dual 180° out-of-phase logic-level PWM outputs (PWM1/PWM2), and active current balancing across both phases using a single high-side current sense resistor (CS+/CS−). It integrates a 5-bit DAC for VID-based voltage programming and ADOPT™ active voltage positioning for optimal transient response.
Its error amplifier (gm = 2.2 mmho, BWERR = 500 kHz) drives the COMP pin to modulate current-sense threshold, while crowbar protection triggers at 114–134% nominal DAC voltage and resets at 50–70%, enabling microprocessor-safe overvoltage shutdown without external components. The 3.0 V reference (±1.6% accuracy, 300 µA max load) supports precise voltage positioning via resistor divider to COMP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 1.05 V to 1.825 V, digitally programmed via 5-bit VID code (26 discrete settings) |
| Total Output Accuracy | ±0.8% over temperature, ensuring VRM 8.5 compliance for Tualatin CPU core voltage tolerance |
| Oscillator Frequency | 430–570 kHz typical (at 25°C, CT = 91 pF), sets per-phase switching frequency at half value (215–285 kHz) |
| Current Sense Threshold | 69–89 mV, determines peak inductor current limit and thus maximum output current capability |
| Power-Good Thresholds | Undervoltage: 76–88%, Overvoltage: 114–134% of nominal DAC voltage - enables reliable system boot and fault signaling |
| Crowbar Response Time | 300 ns, ensures rapid shutdown during overvoltage events to protect connected microprocessors |
| Reference Output | 3.0 V ±1.6%, stable low-noise source for voltage positioning network and external circuitry |
Pinout & Package
Narrow-body 16-lead SOIC (R-16A / SO-16) package, 0°C to 70°C commercial temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID3, VID25 | Voltage ID input bits | 5-bit bus (VID25 + VID3–VID0) read by internal DAC to set FB regulation point; internally pulled up to REF |
| FB | Feedback input | Remote sensing node for closed-loop regulation; referenced to GND near load for accuracy |
| COMP | Error amplifier output | Compensation point controlling current-sense threshold; used for voltage positioning and disable function |
| CT | Oscillator timing input | Connects to ground via external capacitor to set switching frequency; linear ramp generator |
| PWM1 / PWM2 | Logic-level phase drivers | Antiphase outputs (180° offset) for external high-side/low-side drivers; not MOSFET-direct drive capable |
| CS+ / CS− | High-side current sense inputs | Differential pair measuring voltage across single sense resistor shared between both phases |
| PWRGD | Open-drain power-good signal | Asserts high (with external pull-up) when output voltage is within ±12% of nominal VID setting |
| REF | 3.0 V reference output | Stable precision reference for voltage positioning divider and auxiliary circuitry; ≤1 mA load recommended |
| VCC / GND | Supply and ground | VCC accepts 5 V or 12 V main rail; UVLO activates below 5.9–6.9 V with 0.1–0.6 V hysteresis |
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 CPUs |
| Active Current Balancing | Ensures equal current sharing between both phases using single sense resistor and shared comparator - eliminates imbalance from MOSFET RDS(ON) or inductor DCR mismatch |
| Dual Antiphase PWM Outputs | 180° phase-shifted logic-level signals reduce input/output ripple and enable smaller passive components vs. single-phase designs |
| Integrated Crowbar Protection | Hardware-level overvoltage shutdown (300 ns response) that forces both PWMs low and engages low-side FETs - protects CPU without external circuitry |
| VID-Based Programmability | Direct interface to Intel processor VID bus enables automatic output voltage selection across 26 discrete points from 1.05 V to 1.825 V |
Applications
| Desktop CPU Core Regulation | VRM 8.5 Module Design |
|---|---|
Use Scenario: Regulating core voltage for Intel Tualatin processors in desktop motherboards requiring tight dynamic voltage tolerance and fast load-step response. IC Role / Device Role / Timing Role: Dual-phase synchronous buck controller managing two complementary power stages, providing VID-programmed output and active current balancing. Use Value: Enables VRM 8.5 compliance with minimal output capacitors via ADOPT™, reducing BOM cost and PCB area while meeting stringent ±3% transient window. | Use Scenario: Building compact, high-efficiency voltage regulator modules for OEM motherboard production with strict thermal and EMI constraints. IC Role / Device Role / Timing Role: Central timing and control IC generating antiphase PWM signals, sensing current, and monitoring power-good status for full VRM subsystem coordination. Use Value: Reduces inductor size and thermal stress through interleaved operation, while integrated crowbar and short-circuit protection eliminate need for external fault-handling circuitry. |
| High-Current Embedded Processor Supply | Legacy x86 Platform Power Management |
Use Scenario: Delivering stable 1.5 V @ 28 A to legacy embedded x86 processors in industrial control systems operating continuously at ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Primary voltage regulation controller interfacing with processor VID pins and coordinating external driver ICs (e.g., ADP3412/ADP3413). Use Value: Maintains ±0.8% output accuracy across full temperature range and load, ensuring deterministic processor behavior and avoiding brownout-induced resets. | Use Scenario: Upgrading aging server or workstation platforms with improved efficiency and reliability over earlier single-phase controllers. IC Role / Device Role / Timing Role: Drop-in replacement controller enabling two-phase architecture on existing board layouts with minimal redesign - leverages same SOIC footprint and VID interface. Use Value: Doubles effective current capacity while halving ripple current per phase, extending electrolytic capacitor lifetime and lowering RMS losses in power stage components. |
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 |
|---|---|---|---|
| ISL6522CRZ | 6-bit VID (1.10–2.05 V range), higher max frequency (1 MHz), no integrated crowbar; requires external OV protection | Supports broader VID range and faster transients but lacks hardware-level overvoltage shutdown | Choose ISL6522CRZ when wider output voltage range or higher switching frequency is prioritized over integrated crowbar safety |
| TPS51216RGER | 3.3 V/5 V compatible, integrated MOSFET drivers, lower quiescent current (2.5 mA), no VID25 pin - uses 4-bit VID only | Designed for newer mobile/embedded platforms; lacks VID25 compatibility and VRM 8.5-specific ADOPT™ positioning | Choose TPS51216RGER for space-constrained designs needing integrated drivers and lower IQ, but verify VID compatibility and transient performance requirements |
Compared with ISL6522CRZ and TPS51216RGER, the ADP3162JR provides unique ADOPT™ active voltage positioning and hardware crowbar protection optimized specifically for VRM 8.5 Tualatin systems, making it the only option among the three with guaranteed ±0.8% accuracy and 300 ns overvoltage response without external components.
Availability
ADP3162JR is available at Aetrix Electronics and suitable for desktop CPU power supplies, VRM 8.5 modules, and high-current embedded processor supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and OEM programs.
Supply support for ADP3162JR 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and computing markets.
The ADP3162JR belongs to Analog Devices' CPU power controller product line, designed specifically to meet Intel VRM specifications with features like ADOPT™ technology, VID interface compliance, and integrated protection for high-reliability desktop and embedded computing platforms.
FAQ
What is the operating temperature range specified for the ADP3162JR?
The ADP3162JR is specified for the commercial temperature range of 0°C to 70°C, as confirmed in the Ordering Guide and Absolute Maximum Ratings table. This range aligns with standard desktop PC ambient conditions and is validated across all electrical parameters including output accuracy, oscillator frequency, and crowbar thresholds. The ADP3162JR does not support extended or industrial temperature grades.
Does the ADP3162JR integrate MOSFET drivers, or does it require external drivers?
The ADP3162JR provides logic-level PWM outputs (PWM1 and PWM2) only and does not integrate high-current MOSFET drivers. It must be paired with external driver ICs such as the ADP3412, ADP3413, or ADP3414 to drive high-side and low-side power MOSFETs. This separation allows optimized thermal management and layout flexibility in high-current VRM designs.
How does the ADP3162JR achieve active current balancing between its two phases?
The ADP3162JR achieves active current balancing by using a single high-side current sense resistor (CS+/CS−) shared between both phases and a common current comparator. During each phase's ON time, the same sense resistor and comparator measure inductor current, eliminating mismatches from MOSFET RDS(ON) or inductor DCR variations. This ensures equal current division even under large transient loads.
What is the purpose of the VID25 pin on the ADP3162JR?
The VID25 pin on the ADP3162JR serves as the MSB of the 5-bit VID code, enabling 26 discrete output voltage settings from 1.05 V to 1.825 V. It is internally pulled up to the 3.0 V reference and functions as a logic-high default when left unconnected, allowing backward compatibility with 4-bit VID configurations while preserving full 5-bit resolution when actively driven.
Can the ADP3162JR operate with a 5 V input supply, or is 12 V required?
The ADP3162JR supports both 5 V and 12 V main input supplies, as stated in the General Description. Its VCC pin operates across 5.9–6.9 V UVLO threshold, and the controller is optimized to convert either rail into the required CPU core voltage. Design Example in the datasheet explicitly uses VIN = 5 V for a Tualatin application, confirming full functionality at 5 V.
ADP3162JR 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 VRM8.5
- Voltage - Input:
- 15V
- Number of Outputs:
- 5
- Voltage - Output:
- 1.825V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADP3162JR FAQ
1.How can I place an order for ADP3162JR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3162JR 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 ADP3162JR reliable?
The price and inventory of ADP3162JR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3162JR is usually 5 days.
3.What payment methods are accepted for ADP3162JR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3162JR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3162JR?
ADP3162JR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3162JR 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 ADP3162JR?
For technical support, including ADP3162JR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3162JR requirements.
6.How does Aetrix verify that ADP3162JR is sourced from the original manufacturer or authorized distributors?
All ADP3162JR 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 ADP3162JR meets industry standards.
7.What is the process for return or replacement of ADP3162JR?
All ADP3162JR units undergo pre-shipment inspection (PSI). If there is an issue with ADP3162JR, 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 ADP3162JR part is unused and in its original packaging.
Return procedure for ADP3162JR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP3162JR Tags
-
TPS51206DSQR
Texas Instruments
-
TPS51200DRCR
Texas Instruments
-
TPS51200DRCT
Texas Instruments
-
TPS62740DSSR
Texas Instruments
-
TPS51100DGQR
Texas Instruments
-
NCP51200MNTXG
onsemi
-
NCP51400MNTXG
onsemi
-
RT9026GSP
Richtek USA Inc.
-
LP2998MRX/NOPB
Texas Instruments
-
TPS51200QDRCRQ1
Texas Instruments
-
DPA423GN-TL
Power Integrations
-
LM10011SD/NOPB
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
