SI-3011ZF-TL

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The SI-3011ZF is a high-current, low-dropout voltage regulator manufactured by Sanken Electric. It delivers up to 3 A output current with a maximum dropout voltage of 0.7 V at full load. The device features an adjustable output voltage range from 1.1 V to 5 V and includes remote voltage sensing capabilities. It operates with a maximum standby current of 1 μA and incorporates foldback current limiting and thermal protection circuits. The component is housed in a fully molded TO-220-style 5-lead flange-mounted package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides high-current regulation up to 3 A with low dropout characteristics
• Features adjustable output voltage ranging from 1.1 V to 5 V
• Includes integrated thermal shutdown and foldback overcurrent protection
• Supports remote voltage sensing for improved load regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Embedded core, memory, or logic supplies
• Secondary-side stabilization of multi-output SMPS
• Industrial machinery power systems
• Printers and other office equipment
• Televisions and electronic games

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering suffix and revision level against the official Sanken Electric datasheet before procurement. Confirm that the application environment complies with the specified operating junction temperature limits and thermal resistance requirements. Ensure proper heatsinking torque and silicone grease selection are applied during installation to maintain reliability standards defined in the handling cautions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator for applications requiring high output current with minimal input-to-output voltage differential. The adjustable voltage range allows flexibility for various logic levels. Consider the thermal management requirements carefully, as performance depends on junction temperature limits. Verify compatibility with system ground references, noting restrictions on using positive/negative outputs with common loads due to foldback protection behavior.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The SI-3011ZF belongs to the SI-3000Z series of hybrid IC voltage regulators designed for industrial and consumer electronics. It utilizes a PNP pass element to achieve low dropout performance. A similar lower-power surface-mount variant is available as the SI-3011ZD. Fixed output versions at 2.5 V and 3.3 V are also offered within the same product family.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Designers should consult Sanken Electric sales representatives for alternative components meeting specific reliability or availability requirements.