S-816A51AMC-BBAT2U

Overview

The S-816A51AMC-BBAT2U is a linear regulator controller IC from ABLIC Inc. designed for use with external transistors to achieve high current output capabilities. It features a fixed output voltage of 5.1V and operates within an input voltage range up to 30V. The device provides precise voltage control with a tolerance of 2.0%. It is housed in a compact SOT-23-5 package, suitable for surface mount applications. The component supports a maximum output current of 1A when paired with the appropriate external transistor, making it suitable for power management tasks requiring stable regulation.

Feature Summary

• Functions as a linear regulator controller requiring an external NPN or PNP transistor for operation
• Provides fixed 5.1V output with high accuracy tolerance
• Supports high output current capability through external transistor configuration
• Operates over a wide input voltage range

Applications

• Battery-powered devices requiring stable 5.1V supply
• Embedded systems needing adjustable current capacity via external components
• Portable electronics utilizing low dropout regulation
• Industrial control modules requiring precise voltage reference

Procurement Notes

Verify the specific suffix BBAT2U against the official ABLIC datasheet to confirm packaging and tape-and-reel specifications. Ensure compatibility with external transistor selection for the desired current load. Confirm RoHS compliance status directly from the manufacturer's documentation before procurement. Check for any recent discontinuation notices or lifecycle changes associated with this part number.

Selection Notes

Select this component when a fixed 5.1V output is required but higher current than standard LDOs is needed. The design must include an appropriate external transistor rated for the target load current. Consider thermal dissipation requirements for both the controller and the external pass element. Verify that the input voltage does not exceed the maximum rating while accounting for dropout voltage across the external transistor.

Part Context

This part belongs to the S-816 series of CMOS voltage regulators by ABLIC. Unlike integrated LDOs, this series uses a controller architecture allowing flexibility in output current through external components. It is categorized under PMIC - Power Management ICs, specifically linear regulator controllers. The SOT-23-5 package offers a small footprint for space-constrained designs.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to the external transistor dependency. Evaluate other S-816 series variants with different output voltages if 5.1V is not strictly required. Cross-reference with similar controller-based regulators from other manufacturers, ensuring equivalent input/output characteristics and package compatibility.