S-818A39AMC-BGTT2G

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

The S-818A39AMC-BGTT2G is a positive voltage regulator from the S-818 Series, manufactured by ABLIC Inc. It utilizes CMOS technology to provide a fixed output voltage of 3.9 V with an accuracy of ±2.0%. The device operates within an input voltage range up to 10 V and supports output currents ranging from 150 mA to 250 mA depending on the specific output voltage setting. It features a low dropout voltage of approximately 0.24 V typical at 60 mA load. Current consumption is 30 µA typical during operation and reduces to 0.1 µA typical when powered off via the built-in ON/OFF circuit. The component is housed in a surface-mount SOT-23-5 package.

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

• Built-in ON/OFF circuit enables significant current reduction during power-off states to extend battery life.
• Utilizes low on-resistance transistors to achieve low dropout voltage and support large output currents.
• Compatible with small ceramic capacitors of 2 µF or more for phase compensation and stability.

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

• Constant-voltage power supply for battery-powered devices
• Power source for personal communication devices
• Power source for home electric appliances

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

Verify the specific ordering suffix against official documentation to confirm package type and environmental compliance. Ensure the selected variant matches the required logic polarity for the ON/OFF pin. Confirm that the manufacturer's datasheet specifications are met regarding input and output capacitor requirements to prevent oscillation.

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

Select this component for applications requiring precise voltage regulation with minimal quiescent current. Consider the thermal dissipation capabilities of the SOT-23-5 package when designing for high output currents. Ensure the input voltage remains within the specified maximum rating to avoid damage from reverse current through parasitic diodes.

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

This part belongs to the S-818 Series of low dropout CMOS voltage regulators. The series offers output voltages selectable in 0.1 V steps from 2.0 V to 6.0 V. It is designed for portable electronics where space and power efficiency are critical constraints.

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

Consult the official product name list for alternative output voltages within the S-818 Series. Verify compatibility with existing board layouts if considering packages such as SOT-89-5.

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

What is the function of the NC pin in the SOT-23-5 package?

The NC pin is electrically open. It can be connected to the VIN pin or the VSS pin if necessary for layout purposes.

How does the ON/OFF pin control the regulator?

Setting the ON/OFF pin to the OFF level stops internal circuit operation and turns off the output transistor, significantly reducing current consumption.