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Product Detailed Parameters
- Description：IC REG SST3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Bulk
- Function：-
- Output Configuration：-
- Topology：-
- Output Type：-
- Number of Outputs：-
- Voltage - Input (Min)：-
- Voltage - Input (Max)：-
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：-
- Frequency - Switching：-
- Synchronous Rectifier：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SST3
- Grade：-
- Qualification：-
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Overview
The BA9734AKV is a six-channel synchronous step-down switching regulator IC manufactured by ROHM Semiconductor. It integrates six independent DC-DC converter channels within a single package, designed for applications requiring multiple regulated voltage rails from a single input source. The device operates with an input voltage range of 2.7V to 5.5V and supports output currents up to 1A per channel. Key electrical characteristics include a fixed switching frequency of 1MHz, high efficiency across various load conditions, and integrated protection features such as over-current protection and thermal shutdown. The component is housed in a compact VQFN28 package, facilitating space-constrained designs.
Feature Summary
- Integrates six independent synchronous buck converter channels for multi-rail power distribution
- Supports wide input voltage range suitable for battery-powered and USB-powered applications
- Features high-efficiency synchronous rectification with integrated power MOSFETs
- Includes comprehensive protection mechanisms including over-current and thermal shutdown
Applications
- Portable electronic devices requiring multiple voltage domains
- USB-powered peripherals and hubs
- Mobile communication equipment
- Consumer electronics with complex power management needs
Procurement Notes
Verify the specific suffix or tape/reel configuration against the manufacturer's latest datasheet to ensure compatibility with automated assembly processes. Confirm that the ordering part number matches the exact pinout and thermal pad requirements for your PCB layout. Cross-reference the RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region and production batch.
Selection Notes
Select this component when a design requires six separate low-voltage DC-DC outputs from a common 3.3V or 5V rail. It is suitable for systems where board space is limited but multiple voltage levels are necessary for digital logic, memory, and peripheral interfaces. Ensure the total current demand across all channels does not exceed the thermal dissipation capabilities of the chosen package and PCB copper area.
Part Context
This part belongs to ROHM's family of multi-channel synchronous buck regulators, aimed at simplifying power architecture in portable devices. Unlike discrete solutions, it reduces component count and board size. It complements linear regulators in mixed-signal systems by providing efficient conversion for higher current loads while maintaining precise voltage regulation for sensitive digital circuits.
Replacement Considerations
Check for direct pin-to-pin replacements within the same ROHM series or comparable multi-channel buck controllers from other manufacturers. Verify that alternative parts support the same number of channels, input voltage range, and switching frequency to maintain system stability and electromagnetic interference profiles.
