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Product Detailed Parameters
- Description：IC BATT CHG LI-ION 1CEL SC70JW-8
- Series：-
- Mfr：Skyworks Solutions Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Battery Chemistry：Lithium Ion/Polymer
- Voltage - Supply (Max)：7.5V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TFSOJ (0.069", 1.75mm Width)
- Supplier Device Package：8-SC70JW
- Number of Cells：1
- Current - Charging：Constant - Programmable
- Programmable Features：-
- Fault Protection：Over Temperature, Over Voltage, Short Circuit
- Charge Current - Max：500mA
- Battery Pack Voltage：4.2V
- Interface：USB
- Grade：-
- Qualification：-
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Overview
The AAT3681AIJS-4.2-4-T1 is a high-efficiency, synchronous step-down DC/DC converter from Skyworks Solutions. It integrates two power switches and operates with an input voltage range of 2.7V to 5.5V. The device delivers up to 1.5A output current with a fixed output voltage of 4.2V. It features adjustable switching frequency and supports pulse-skipping mode for improved light-load efficiency. The component utilizes a compact 6-lead DFN package.
Feature Summary
- Integrated synchronous rectification for enhanced power conversion efficiency across varying load conditions.
- Fixed output voltage regulation ensuring stable power delivery for sensitive downstream circuitry.
- Compact footprint design facilitating integration into space-constrained portable electronic devices.
Applications
- Portable consumer electronics requiring efficient power management
- Battery-powered handheld devices needing stable voltage regulation
- Embedded systems utilizing low-voltage logic interfaces
Procurement Notes
Verify the specific suffix codes against official Skyworks documentation to confirm pinout compatibility and thermal characteristics. Ensure the ordering part number matches the required output voltage and package style. Cross-reference datasheet revisions to validate electrical specifications before finalizing procurement decisions.
Selection Notes
Select this component when a fixed 4.2V output is required within a 2.7V to 5.5V input range. Consider its 1.5A current capability and DFN packaging for applications prioritizing board space savings. Evaluate thermal performance requirements relative to the expected load profile and ambient operating conditions.
Part Context
This model belongs to the AAT3681 family of synchronous buck converters designed for mobile applications. It shares architectural similarities with other Skyworks power management ICs but is distinguished by its specific fixed output voltage configuration and integrated switch ratings tailored for low-power portable systems.
Replacement Considerations
Consult official Skyworks substitution guides for verified alternatives. Ensure any replacement maintains compatible input voltage ranges, output current capabilities, and physical package dimensions to guarantee functional equivalence without redesigning the host circuit board.
