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Analog Devices Inc. ADP3153ARU-REEL7
- Part No.:
- ADP3153ARU-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADP3153ARU-REEL7.pdf
- Description:
- POWER CONTROLLER FOR PENTIUM
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
ADP3153ARU-REEL7 from Analog Devices is a 5-bit programmable dual power supply controller for Pentium II, Deschutes, Pentium Pro, Pentium, and AMD–K6 processors. It integrates a synchronous buck controller (1.8 V–3.5 V, up to 14 A) and an external N-channel linear regulator controller (e.g., 3.3 V @ 1 A), features VRM 8.2 compliance, ±1% output voltage accuracy over 0°C to +70°C, and current-mode constant-off-time architecture with 250 kHz max switching frequency.
For engineers reviewing the ADP3153ARU-REEL7 datasheet, ADP3153ARU-REEL7 pinout, ADP3153ARU-REEL7 application, or ADP3153ARU-REEL7 equivalent, key selection criteria include VID-code-based digital voltage programming, dual N-channel gate drive capability (DRIVE1/DRIVE2), crowbar overvoltage protection, Power Good timing (500 µs response), and TSSOP-20 package compatibility with Intel VRM 8.2 desktop CPU power delivery requirements.
Technical Context
The ADP3153ARU-REEL7 implements a current-mode, constant-off-time control architecture where off-time is set by an external CT capacitor (e.g., 150 pF yields ~2.45 µs off-time), enabling input-voltage-dependent frequency scaling without slope compensation. Its 5-bit VID DAC (600 mV–1.167 V reference) directly interfaces processor voltage identification codes to program output between 1.8 V and 3.5 V in discrete steps.
It integrates dual gate drivers (DRIVE1 for high-side N-MOSFET, DRIVE2 for synchronous rectifier), a dedicated linear regulator controller (VLDO, FB pins), current-sense comparator (SENSE+/SENSE–), and protection circuitry including crowbar (9–24% OV trip), short-circuit detection (125–165 mV threshold), and open-drain Power Good (±5% regulation window, 500 µs delay).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 1.8 V to 3.5 V, digitally set via 5-bit VID code per Intel VRM 8.2 specification |
| Output Accuracy | ±1.0% over 0°C to +70°C - ensures core voltage stays within Pentium II processor static tolerance limits |
| Max Output Current | 14 A for main buck output - supports full-load operation of high-performance desktop CPUs |
| Switching Frequency | Up to 250 kHz - determined by CT value and VIN/VO ratio; 150 pF yields ~2.45 µs off-time |
| Crowbar Trip Point | 9–24% above nominal output - actively pulls down output during overvoltage to protect CPU |
| Power Good Window | ±5% regulation band with 500 µs response - meets Intel VRM 8.2 sequencing and monitoring requirements |
| VID Input Threshold | Low: 0.6 V, High: 2.0 V - compatible with standard CMOS-level processor VID signaling |
| Operating Temperature | 0°C to +70°C ambient - validated for commercial desktop PC motherboard environments |
Pinout & Package
Narrow-body 20-lead Thin Shrink Small Outline Package (TSSOP, RU-20); 0.65 mm pitch; exposed pad not present; RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID4 (Pins 1–4, 20) | Voltage Identification DAC Inputs | Read 5-bit processor code; internal 20–30 kΩ pull-up; open = logic high; all open = shutdown |
| DRIVE1 (Pin 17) | High-Side N-MOSFET Gate Driver | Swings 0 V to VCC (12 V typical); drives buck switch; non-overlapping timing prevents shoot-through |
| DRIVE2 (Pin 16) | Synchronous Rectifier N-MOSFET Gate Driver | Swings 0 V to VCC; complements DRIVE1; enables >90% efficiency in buck topology |
| SENSE+ / SENSE– (Pins 11, 10) | Current Sense Comparator Inputs | Detect IL ripple across RSENSE; set peak current limit (125–165 mV threshold); enable short-circuit protection |
| PWRGD (Pin 14) | Open-Drain Power Good Output | Asserts high after 500 µs in ±5% regulation; signals CPU ready for clock enable and boot sequence |
| CT (Pin 12) | Constant Off-Time Timing Capacitor | 150 pF sets ~2.45 µs off-time; discharge current = 65 µA (in regulation); defines switching frequency |
| VLDO (Pin 9) | Linear Regulator N-MOSFET Gate Drive | Drives external LDO pass device; used with FB and resistor divider to generate auxiliary 3.3 V rail |
| FB (Pin 7) | Linear Regulator Feedback Input | Connects to resistor divider; sets VLDO output voltage (e.g., 3.30 V with RPROG = 35 kΩ, R3 = 20 kΩ) |
| SD (Pin 6) | Shutdown Control Input | Logic high (>2.0 V) disables both outputs; internal pull-down; enables system-level power sequencing |
| AGND (Pin 5) | Analog Ground Reference | Must be routed separately to COUT (–) terminal; isolates noise-sensitive analog circuitry from power ground |
Key Features
| Feature | Design Value |
|---|---|
| VRM 8.2 Compliance | Fully implements Intel's VRM 8.2 specification for Pentium II/Deschutes core power, including VID decoding, transient response, and sequencing |
| Current-Mode Constant Off-Time Control | Eliminates need for slope compensation; enables stable operation across wide VIN/VO ratios and load transients |
| Dual N-Channel Gate Drivers | DRIVE1/DRIVE2 support discrete high-efficiency synchronous buck stage with no external level shifters required |
| Integrated Crowbar Protection | Turns on low-side MOSFET if VO exceeds +9–24% nominal - protects CPU from destructive overvoltage events |
| On-Board Linear Regulator Controller | VLDO/FB interface enables precise auxiliary rail generation (e.g., 3.3 V @ 1 A) using external N-MOSFET and resistive feedback |
| Programmable Short-Circuit Protection | Adjustable current limit via RSENSE (125–165 mV threshold); guarantees fault response independent of load or input conditions |
Applications
| Desktop CPU Core Power Supply | VRM Module for Pentium II Platforms |
|---|---|
Use Scenario: Primary DC/DC converter on ATX motherboard supplying core voltage to Pentium II or Deschutes processor under dynamic load (0–14 A). IC Role / Device Role / Timing Role: Dual-output controller managing synchronous buck (1.8–3.5 V) and auxiliary LDO (3.3 V); provides VID decoding, Power Good assertion, and crowbar safety. Use Value: Meets Intel VRM 8.2 transient specs with minimal output capacitance; ±1% accuracy ensures CPU stability at 300+ MHz clock speeds. | Use Scenario: Standalone voltage regulator module (VRM) used in OEM server/desktop boards requiring plug-and-play CPU power compliance. IC Role / Device Role / Timing Role: Central VRM 8.2 controller IC; coordinates gate drive timing, current sensing, and protection logic for discrete MOSFETs and passive components. Use Value: Enables compact, cost-effective VRM design with guaranteed short-circuit protection and ±5% Power Good window for BIOS handshaking. |
| AMD–K6 Processor Power Delivery | Pentium Pro Embedded System Supply |
Use Scenario: Core power solution for AMD–K6-based industrial PCs where VRM 8.2 compatibility and thermal robustness are required. IC Role / Device Role / Timing Role: Programmable buck controller interfacing K6 VID pins; delivers 2.2–2.9 V at up to 14 A with fast load-step response. Use Value: Supports K6-specific VID codes (e.g., VID=10110 → 2.2 V); crowbar function prevents damage during brownout recovery. | Use Scenario: Power management in legacy embedded systems using Pentium Pro CPUs in extended-temperature industrial applications. IC Role / Device Role / Timing Role: Main regulator controller operating from 5 V input; generates 2.8 V core rail with ±1% accuracy over 0°C to +70°C ambient. Use Value: Validated for continuous operation at full load; integrated shutdown (SD pin) enables remote power cycling via system management controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output CPU power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6522CRZ-T | Single-chip VRM 8.5 controller with integrated MOSFET drivers; supports 0.9–2.5 V range; no separate LDO controller | Targeted at newer Pentium III platforms; lacks VLDO/FB interface for auxiliary rail generation | Choose ISL6522CRZ-T only when upgrading to VRM 8.5 and eliminating discrete LDO stage |
| HIP6301CBZ-T | VRM 8.0 controller with 4-bit VID; max 12 A output; no crowbar; requires external linear regulator bias | Designed for Pentium II 266–333 MHz; lower integration and protection feature set than ADP3153ARU-REEL7 | Use HIP6301CBZ-T only in cost-sensitive designs where crowbar and ±1% accuracy are not mandatory |
Compared with ISL6522CRZ-T and HIP6301CBZ-T, the ADP3153ARU-REEL7 uniquely combines VRM 8.2 compliance, integrated LDO controller (VLDO/FB), and hardware crowbar protection - making it the only option supporting both primary core regulation and auxiliary 3.3 V rail generation in legacy Pentium II/K6 systems.
Availability
ADP3153ARU-REEL7 is available at Aetrix Electronics and suitable for desktop PC motherboard design, VRM module manufacturing, and Pentium II/K6 processor power supply replacement requiring stable component supply and long-lifecycle support.
Supply support for ADP3153ARU-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 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 ADP3153ARU-REEL7 belongs to Analog Devices' CPU power management product line, engineered specifically for Intel and AMD desktop processor VRM compliance, emphasizing accuracy, transient response, and integrated protection in commercial-temperature TSSOP packages.
FAQ
What is the supported VID voltage range for ADP3153ARU-REEL7?
The ADP3153ARU-REEL7 accepts VID inputs with low threshold ≤0.6 V and high threshold ≥2.0 V. Its internal 5-bit DAC converts VID codes into a 600 mV–1.167 V reference, enabling precise 1.8 V–3.5 V output programming per Table I in the datasheet. VID0–VID4 are internally pulled up to VREG (≈5 V), so floating pins default to logic high.
Does ADP3153ARU-REEL7 support both buck and linear regulator outputs simultaneously?
Yes. The ADP3153ARU-REEL7 concurrently controls a synchronous buck converter (1.8–3.5 V, up to 14 A) and an external N-channel linear regulator via VLDO and FB pins. In typical applications, it delivers 2.8 V to the CPU core while generating 3.3 V @ 1 A for auxiliary circuitry using an external IRL2703 MOSFET and resistor divider.
What protection features does ADP3153ARU-REEL7 include?
The ADP3153ARU-REEL7 integrates short-circuit protection (via SENSE+/SENSE– comparator with 125–165 mV threshold), overvoltage crowbar (9–24% trip), Power Good monitoring (±5% window, 500 µs delay), and shutdown control (SD pin). All protections operate independently of microcontroller intervention and are hardware-based.
What is the maximum switching frequency of ADP3153ARU-REEL7?
The ADP3153ARU-REEL7 has a maximum switching frequency of 250 kHz, achieved with appropriate CT capacitor selection and light-load conditions. At nominal 2.8 V output and 5 V input, a 150 pF CT yields ~2.45 µs off-time and ~200 kHz operation; frequency decreases under heavy load or higher VO due to parasitic voltage drops.
Is ADP3153ARU-REEL7 compatible with Pentium Pro processors?
Yes. The ADP3153ARU-REEL7 is explicitly listed in its Applications section for Pentium Pro processors. It supports the required VID codes (e.g., 10111 → 2.8 V) and meets VRM 8.2 specifications applicable to Pentium Pro core voltage regulation, including ±1% accuracy and transient response requirements.
ADP3153ARU-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Controller, Intel Pentium® II
- Voltage - Input:
- 16V
- Number of Outputs:
- 1
- Voltage - Output:
- 1.8V ~ 3.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
ADP3153ARU-REEL7 FAQ
1.How can I place an order for ADP3153ARU-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3153ARU-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 ADP3153ARU-REEL7 reliable?
The price and inventory of ADP3153ARU-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3153ARU-REEL7 is usually 5 days.
3.What payment methods are accepted for ADP3153ARU-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3153ARU-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3153ARU-REEL7?
ADP3153ARU-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3153ARU-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 ADP3153ARU-REEL7?
For technical support, including ADP3153ARU-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3153ARU-REEL7 requirements.
6.How does Aetrix verify that ADP3153ARU-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADP3153ARU-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 ADP3153ARU-REEL7 meets industry standards.
7.What is the process for return or replacement of ADP3153ARU-REEL7?
All ADP3153ARU-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP3153ARU-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 ADP3153ARU-REEL7 part is unused and in its original packaging.
Return procedure for ADP3153ARU-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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