ADM1275-3ARQZ Analog Devices Integrated Circuit (Small Outline Packages) In Stock
ADM1275-3ARQZ is a digital hot-swap controller and power monitor IC from Analog Devices with adjustable threshold, PMBus interface, and 1-channel monitoring in a 20-pin QSOP package. Enables safe hot insertion and removal of boards in live systems. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- END OF LIFE
- Datasheet
- ADM1275-3ARQZ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- PMBus-compatible digital interface with adjustable current, voltage, and power thresholds for precise hot-swap control
- Single-channel digital power controller with PMBus telemetry enabling real-time monitoring of voltage, current, and power
- Compact 20-pin QSOP (RQ-16) package with plastic/epoxy construction supports dense server and telecom board designs
Applications
The ADM1275-3ARQZ is designed for hot-swap control in high-availability server, telecom, and data center boards where cards must be inserted or removed without powering down the system. Its digital PMBus interface allows host processors or BMCs to monitor live voltage, current, and power consumption and to set protection thresholds dynamically, supporting intelligent power management in blade servers and ATCA platforms. The adjustable threshold feature enables a single device to be configured for different bus voltages and current limits across multiple board designs, reducing component proliferation.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | RQ-16 |
| YTEOL | 1 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | DIGITAL POWER CONTROLLER |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 5mA |
| Supply Voltage-Max (Vsup) | 20V |
| Supply Voltage-Min (Vsup) | 2.95V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | DMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.64mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +1V |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the ADM1275-3ARQZ protect a server backplane during hot-swap insertion events?
The ADM1275-3ARQZ controls an external MOSFET to limit inrush current during hot-swap insertion by ramping up the gate voltage gradually. The adjustable current threshold allows designers to set the maximum inrush to a level that protects the backplane capacitors and power bus, typically limiting the surge to a few amperes over a controlled rise time in the range of 1 ms to 10 ms, preventing voltage droop on the shared 12 V or 48 V supply.
What PMBus commands can the ADM1275-3ARQZ respond to for real-time power monitoring?
The ADM1275-3ARQZ supports PMBus commands for reading back digitized voltage (in V), current (in A), and power (in W) via its I2C-compatible interface. The internal ADC converts analog measurements from an external sense resistor and voltage divider into 12-bit digital values accessible by a BMC or system controller, enabling precise energy accounting and per-slot power capping in multi-card chassis designs.
What is the pin count and package of ADM1275-3ARQZ, and what board space does it occupy?
The ADM1275-3ARQZ comes in a 20-pin QSOP package (JESD-30 code R-PDSO-G20), which measures approximately 7.5 mm x 4.4 mm. This small footprint allows the hot-swap controller and its associated sense resistor and gate drive components to fit in a compact area on server mezzanine or PCI Express add-in cards where PCB real estate is limited.
When is ADM1275-3ARQZ a better choice than a purely analog hot-swap controller for a managed switch design?
The ADM1275-3ARQZ is preferred over an analog hot-swap controller when the system needs in-band power telemetry. Its PMBus interface lets network management software read per-slot current and power data at run time without additional instrumentation ICs, reducing BOM cost and complexity. For a managed Ethernet switch chassis with 16 or more line cards, this digital visibility enables intelligent load shedding and fault diagnostics that analog-only controllers cannot provide.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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