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LTC1538CG-AUX#PBF is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC REG CTRLR BUCK 28SSOP. Review the specifications below when checking this part for your BOM.
The LTC1538CG-AUX#PBF is a constant frequency, synchronous, triple-output DC/DC converter controller. It operates at a fixed 200kHz switching frequency with 2% output tolerance. The device integrates a low-noise dual switching regulator controller to drive external N-channel power MOSFETs. It supports an input voltage range of 5.2V to 28V. The configuration provides two buck outputs and one linear regulator output. Typical specifications include 98% efficiency for the switching stages.
Verify the specific suffix #PBF indicates lead-free RoHS compliance when sourcing. Confirm the package type matches the 28-SSOP requirement for your PCB layout. Ensure the operating temperature range of 0°C to 70°C aligns with your system environment. Cross-reference the datasheet revision to confirm pinout compatibility with existing reference designs like DC125A-E.
Select this component when a fixed 200kHz frequency is required for EMI management. It is suitable for applications needing integrated control for multiple outputs from a single IC. Consider the external MOSFET drive capability for current requirements up to 3.5A per switching channel. Evaluate the thermal performance of the SSOP package against your heat dissipation constraints.
This part belongs to the LTC1538 family of high-efficiency synchronous step-down switching regulators. It is designed for applications requiring compact, multi-rail power solutions. The AUX suffix typically denotes specific internal configurations or evaluation board compatibility within the Analog Devices portfolio.
Public confirmed substitute part numbers are not available in the provided documentation.
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