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ADP1108AR
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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ 8SOIC
- Series：ADP1108
- Mfr：Analog Devices Inc.
- Package：Bulk
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2V
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：1.245V
- Voltage - Output (Max)：23.4V
- Current - Output：-
- Frequency - Switching：19kHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 70°C
- 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 ADP1108AR is a micropower switch-mode DC-DC converter manufactured by Analog Devices Inc. It operates from an input voltage supply ranging from 2.0 V to 30 V, with typical startup from 1.8 V. The device consumes only 110 µA of supply current and features an internal 1 A power switch. It supports step-up or step-down mode operation with fixed or adjustable output voltages. Packaged in an 8-pin SOIC, it includes a low battery detector comparator and on-chip user-adjustable current limit.
Feature Summary
- Operates at supply voltages from 2.0 V to 30 V
- Consumes only 110 µA supply current
- Supports step-up or step-down mode operation
- Requires minimum external components
Applications
- Notebook/Palm Top Computers
- LCD Bias Generators
- Cellular Telephones
- Portable Instruments
Procurement Notes
Verify the specific suffix 'AR' corresponds to the 8-pin SOIC package variant when sourcing. Confirm RoHS compliance status for the specific manufacturing lot. Ensure the supplier provides valid traceability documentation. Check for any obsolescence notices as this component may be part of a legacy portfolio. Validate that the ordering information matches the required electrical specifications.
Selection Notes
Select this component for applications requiring high versatility in both step-up and step-down configurations. It is suitable for designs needing low quiescent current to extend battery life. The internal 1 A switch allows for moderate load currents without external pass transistors. Consider the fixed voltage versions if precise regulation is needed without external feedback networks.
Part Context
The ADP1108 belongs to the ADP110x series of micropower DC-DC converters. It shares functional similarities with the LT1108 but is distinguished by its specific packaging and minor parameter variations. This family is designed for portable electronics where space and power efficiency are critical constraints.
Replacement Considerations
The ADP1109 and ADP1111 are related parts within the same product family. Verify pinout compatibility and electrical limits before substitution. The LT1108 is a similar topology converter; ensure input/output voltage ranges match the design requirements.
