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Product Detailed Parameters
- Description：IC REG BDGAP DUAL 1.5/1.8V 8SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：12V
- Frequency - Switching：-
- Duty Cycle (Max)：-
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Power on Reset
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The ADM1051AJR-REEL7 is a dual precision voltage regulator controller designed for power rail generation and active bus termination on personal computer motherboards. It integrates a precise 1.2 V bandgap reference and two independent control channels, each featuring amplifiers that drive external N-channel MOSFETs. The device supports outputs of 1.5 V and 1.8 V with ±2.5% accuracy over line, load, and temperature variations. It includes shutdown inputs for channel control and Hiccup Mode protection circuitry to safeguard external power devices during fault conditions.
Feature Summary
- Integrates two independent precision voltage regulator controllers on a single chip
- Includes built-in Hiccup Mode protection circuitry for external power device safety
- Compatible with PC motherboard TYPEDET signal for output voltage selection
- Features low quiescent current and low shutdown current operation
Applications
- Desktop computers
- Servers
- Workstations
Procurement Notes
Verify the specific suffix 'REEL7' against the manufacturer's official documentation to confirm tape and reel packaging specifications. Ensure the component matches the required SOIC-8 package dimensions and lead finish standards. Cross-reference the part number with the latest Analog Devices datasheet to confirm operational temperature ranges and electrical characteristics before integration into design projects.
Selection Notes
Select this component when designing power systems for PC motherboards requiring dual precision voltage rails. It is suitable for applications needing active bus termination and synchronized power-up sequences. Consider its compatibility with external N-channel MOSFETs and the requirement for no external setting resistors for simplified design. Evaluate the thermal performance within the specified operating temperature range.
Part Context
The ADM1051AJR-REEL7 belongs to the ADM1051 family of dual precision voltage regulator controllers manufactured by Analog Devices. This series is specifically engineered for the demanding requirements of personal computer motherboard power distribution. The 'JR' designation indicates the SOIC-8 package variant, while 'REEL7' specifies the tape and reel packaging format for automated assembly processes.
Replacement Considerations
The ADM1051AJRZ-REEL7 is a confirmed substitute part number within the same product family. Verify pinout compatibility and electrical parameter equivalence before replacement. Consult the official Analog Devices documentation for detailed comparison data between these variants.
