SCT2A12STER

Voltage Regulators - DC DC Switching Regulators Overview

The SCT2A12STER is an asynchronous step-down DC-DC converter from SCT, designed for high-voltage input applications. It supports an input voltage range of 5.5V to 100V and delivers a continuous output current of 1A. The device integrates a 970mΩ high-side MOSFET, providing a peak current limit of 1.8A when the input voltage is below 60V. It operates with a fixed switching frequency of 390kHz and utilizes Pulse Frequency Modulation (PFM) for light-load efficiency. The feedback reference voltage is set at 1.2V with ±3% accuracy. The component is housed in an ESOP-8L package and is rated for an operating junction temperature range of -40°C to 150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-side power MOSFET with low on-resistance for efficient power conversion.
• Supports wide input voltage ranges up to 100V for automotive and industrial compatibility.
• Optimized for ultra-low static current to extend battery life in standby modes.
• Employs PFM control mode to maintain high efficiency under light load conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Battery Management System (BMS) protection boards for energy storage systems
• BMS protection circuits for electric two-wheeler vehicles
• Dashboard power supplies for electric assist bicycles

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'STER' corresponds to the ESOP-8L package and tape-and-reel configuration as documented by the manufacturer. Confirm that the required output current does not exceed the 1A continuous rating or the 1.8A peak limit under low input voltage conditions. Ensure thermal management aligns with the specified junction temperature range for the intended ambient environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring high input voltage tolerance and low quiescent current. It is suitable where space constraints favor the ESOP-8L package over larger alternatives. Consider the 390kHz switching frequency for passive component sizing. Compare against the SCT2A00 series if lower output current (0.6A) is sufficient, or the synchronous SCT2A23 series if higher efficiency at heavier loads is prioritized over cost.

Voltage Regulators - DC DC Switching Regulators Part Context

The SCT2A12 belongs to the SCT2A family of high-voltage buck converters from Shanghai SinoChip Technology. This series targets applications demanding robust performance in noisy electrical environments, such as automotive and industrial sectors. The device complements other models like the SCT2A00 and SCT2A27, offering a balance between current capacity and input voltage range within the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official distributor databases for cross-reference data based on pin compatibility and electrical specifications.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the peak current limit for the SCT2A12STER?

The peak current limit is 1.8A when the input voltage is less than 60V.

Does the SCT2A12STER use synchronous rectification?

No, it is an asynchronous converter that integrates only a high-side MOSFET.

What modulation scheme does the SCT2A12STER use for light loads?

It uses Pulse Frequency Modulation (PFM) to optimize efficiency during light-load operation.