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Analog Devices Inc. ADP3162JR-REEL
- Part No.:
- ADP3162JR-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADP3162JR-REEL.pdf
- Description:
- SYNCHRONOUS BUCK CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
ADP3162JR-REEL from Analog Devices is a 5-bit programmable, 2-phase synchronous buck controller for high-performance CPU core voltage regulation. It supports VRM 8.5 compliance, delivers 1.05 V to 1.825 V output via VID interface, features active current balancing and ADOPT™ active voltage positioning, and targets Intel Tualatin processor power supplies.
For engineers reviewing the ADP3162JR-REEL datasheet, ADP3162JR-REEL pinout, ADP3162JR-REEL application, or ADP3162JR-REEL equivalent, key selection criteria include its dual-phase antiphase PWM outputs, 0.8% total output accuracy over temperature, 16-pin narrow SOIC package, crowbar overvoltage protection, and compatibility with external high-power drivers like ADP3412/ADP3413.
Technical Context
The ADP3162JR-REEL implements a current-mode PWM architecture with fixed-frequency oscillator (430–570 kHz typical, set by CT capacitor) and two 180° out-of-phase logic-level PWM outputs. Its internal 5-bit DAC reads VID codes to set regulated output voltage between 1.05 V and 1.825 V with ±0.8% total accuracy over 0°C to 70°C.
It integrates active current balancing using a single high-side current sense resistor (CS+/CS−), ADOPT™ technology for load-transient optimized voltage positioning, and crowbar overvoltage protection that forces both PWM outputs low when output exceeds 114–134% of nominal DAC voltage - all without external components.
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 (VID0–VID3 + VID25) |
| Output Accuracy | ±0.8% over temperature, enabling VRM 8.5 compliance for Tualatin CPUs |
| Oscillator Frequency | 430–570 kHz typical (CT = 91 pF), sets per-phase switching at half frequency (215–285 kHz) |
| Crowbar Threshold | 114–134% of nominal DAC voltage - triggers immediate PWM shutdown to protect microprocessor |
| Current Sense Threshold | 69–89 mV (typical), used with external sense resistor to limit peak inductor current per phase |
| Power-Good Window | 76–88% (UV) and 114–134% (OV) of nominal output - open-drain PWRGD asserts valid regulation |
| Reference Output | 3.0 V ±1.6%, 300 µA max - used for ADOPT resistor divider and external circuit biasing |
Pinout & Package
ADP3162JR-REEL is housed in a 16-lead narrow-body SOIC (R-16A / SO-16) package, rated for 0°C to 70°C operation. Pin 9 (GND) serves as the primary reference for all internal signals and must be connected near the load for accurate remote sensing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID3, VID25 | Voltage ID input pins | Read 5-bit processor VID code; internal pull-ups enable logic-1 if left open |
| COMP | Error amplifier output & compensation node | Drives current sense threshold; connects to ADOPT resistor divider (RA/RB) for voltage positioning |
| FB | Remote feedback input | Connects to CPU VCC_CORE sense point; enables precision regulation under load transients |
| CT | Oscillator timing capacitor node | External capacitor (e.g., 150 pF for 400 kHz) sets switching frequency and ripple-current trade-off |
| PWM1 / PWM2 | Logic-level phase driver outputs | 180° antiphase, 0.1–0.5 V low / 4.5–5.5 V high - require external gate drivers (e.g., ADP3412) |
| CS+ / CS− | High-side current sense differential inputs | Monitor shared sense resistor; enable active current balancing and cycle-by-cycle current limiting |
| PWRGD | Open-drain power-good indicator | Signals valid output (76–134% of nominal); requires external pull-up for host CPU reset sequencing |
| REF | 3.0 V precision reference output | Bypassed with 1 nF capacitor; supplies bias for ADOPT network and cannot drive >1 mA loads |
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 |
| Active Current Balancing | Equalizes phase currents using single high-side sense resistor - immune to MOSFET RDS(ON) and inductor DCR mismatches |
| Dual Antiphase PWM Outputs | 180° phase shift reduces output ripple by ~70% vs. single-phase; enables smaller inductors and capacitors |
| Integrated Crowbar Protection | Hardware-level overvoltage shutdown (no delay) protects CPU during high-side MOSFET short failures |
| VRM 8.5 Compliance | Meets Intel's static load-line (3.2 mΩ), no-load offset, and dynamic transient specifications without external compensation |
Applications
| Desktop CPU Core Power | VRM 8.5 Module |
|---|---|
Use Scenario: Regulating core voltage for Intel Tualatin processors in desktop PCs with up to 28 A load current. IC Role / Device Role / Timing Role: Primary 2-phase synchronous buck controller managing VID decoding, current balancing, and ADOPT-based transient response. Use Value: Enables VRM 8.5 compliance with minimal external components - only CT capacitor, sense resistor, and ADOPT divider required. | Use Scenario: Building compact, cost-optimized voltage regulator modules for OEM motherboard designs. IC Role / Device Role / Timing Role: Central control IC coordinating dual-phase power stages, PWRGD signaling, and crowbar safety interlock. Use Value: Reduces total output capacitance by up to 40% versus standard current-mode controllers due to ADOPT voltage positioning. |
| High-Performance Microprocessor Supply | Multi-Phase CPU Power Reference Design |
Use Scenario: Delivering tightly regulated 1.05–1.825 V at ≤70°C ambient for Pentium III-class processors. IC Role / Device Role / Timing Role: Dual-phase controller with integrated 3.0 V reference, error amplifier, and current-mode PWM logic. Use Value: Achieves ±0.8% output accuracy across line, load, and temperature - critical for stable CPU operation at 1 GHz+. | Use Scenario: Reference implementation using ADP3162JR-REEL with ADP3412 drivers and IRL3803 MOSFETs. IC Role / Device Role / Timing Role: Controller providing antiphase PWM, current sense interface, and PWRGD monitoring for full-system validation. Use Value: Validates layout, thermal management, and transient performance before volume production - shown in Figure 2 of datasheet. |
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-T | 6-bit VID (1.1–2.05 V), 0.5% accuracy, integrated MOSFET drivers, no crowbar | Supports wider voltage range and higher accuracy but lacks hardware overvoltage crowbar | Choose ISL6522CRZ-T when integrated drivers reduce BOM count and crowbar is handled externally |
| TPS51216RGER | 3-phase capable, 5-bit VID (0.5–1.5 V), 0.5% accuracy, integrated LDO for gate drive, no ADOPT | Targets newer low-voltage CPUs; lacks active voltage positioning and crowbar function | Choose TPS51216RGER for multi-phase scalability and lower-voltage operation where ADOPT is not required |
Compared with ISL6522CRZ-T and TPS51216RGER, ADP3162JR-REEL uniquely combines VRM 8.5 compliance, ADOPT™ transient optimization, and hardware crowbar protection in a 16-pin SOIC - making it optimal for cost-sensitive, safety-critical Tualatin-era desktop power designs.
Availability
ADP3162JR-REEL is available at Aetrix Electronics and suitable for desktop PC motherboard development, VRM 8.5 module manufacturing, and legacy Intel processor power supply replacement requiring stable component supply and long-term lifecycle support.
Supply support for ADP3162JR-REEL 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, headquartered in Norwood, MA.
The ADP3162JR-REEL belongs to Analog Devices' CPU power controller product line, designed specifically to meet Intel VRM specifications for high-efficiency, low-noise, and transient-robust core voltage regulation in desktop computing platforms.
FAQ
What is the operating temperature range for ADP3162JR-REEL?
The ADP3162JR-REEL is specified for commercial temperature operation from 0°C to 70°C ambient. Its internal thermal protection and 125°C maximum junction temperature ensure reliable performance in densely packed motherboard environments. The device does not include built-in thermal shutdown, so PCB layout must maintain adequate copper area and airflow around the SOIC package to prevent exceeding 125°C junction temperature during sustained 28 A operation.
Does ADP3162JR-REEL integrate MOSFET drivers?
No, ADP3162JR-REEL does not integrate MOSFET drivers. It provides dual logic-level PWM outputs (PWM1/PWM2) intended to interface with external high-current gate drivers such as the ADP3412, ADP3413, or ADP3414. This separation allows system designers to select optimal discrete MOSFETs and drivers for thermal and efficiency requirements while maintaining precise control via the ADP3162JR-REEL's current-mode architecture and ADOPT™ regulation.
How does the crowbar protection in ADP3162JR-REEL work?
The ADP3162JR-REEL crowbar comparator monitors output voltage via the FB pin and triggers when voltage exceeds 114–134% of the nominal DAC-set value. Upon detection, it immediately forces both PWM1 and PWM2 outputs low - turning off high-side MOSFETs and activating low-side devices to rapidly sink inductor energy and collapse output voltage. Recovery occurs only after voltage drops below 50–70% of nominal, ensuring safe re-engagement. This hardware-level response (<300 ns) protects the CPU without software or external circuitry.
Can ADP3162JR-REEL be used with non-Intel processors?
Yes, ADP3162JR-REEL can be used with any processor supporting standard 5-bit VID voltage identification (VID0–VID3 + VID25), including compatible AMD or custom ASICs. Its 1.05–1.825 V output range, 0.8% accuracy, and VRM 8.5-compliant load-line behavior make it suitable for any high-performance microprocessor requiring tightly regulated, multi-phase core power - provided the target device implements the same VID encoding table and timing requirements as Intel Tualatin.
What external components are mandatory for ADP3162JR-REEL operation?
Mandatory external components for ADP3162JR-REEL include: (1) CT timing capacitor (e.g., 150 pF for 400 kHz oscillator), (2) high-side current sense resistor (e.g., 4 mΩ for 28 A), (3) ADOPT resistor divider (RA/RB) between REF and GND to set load-line slope, (4) 1 nF bypass capacitor on REF, and (5) pull-up resistor on PWRGD. Optional but recommended: RC network on COMP for loop compensation and ceramic decoupling on VCC.
ADP3162JR-REEL 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:
- 2
- Voltage - Output:
- 1.05V ~ 1.83V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADP3162JR-REEL FAQ
1.How can I place an order for ADP3162JR-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3162JR-REEL 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-REEL reliable?
The price and inventory of ADP3162JR-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3162JR-REEL is usually 5 days.
3.What payment methods are accepted for ADP3162JR-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3162JR-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3162JR-REEL?
ADP3162JR-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3162JR-REEL 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-REEL?
For technical support, including ADP3162JR-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3162JR-REEL requirements.
6.How does Aetrix verify that ADP3162JR-REEL is sourced from the original manufacturer or authorized distributors?
All ADP3162JR-REEL 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-REEL meets industry standards.
7.What is the process for return or replacement of ADP3162JR-REEL?
All ADP3162JR-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADP3162JR-REEL, 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-REEL part is unused and in its original packaging.
Return procedure for ADP3162JR-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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