S-1131B27UC-N4MTFU

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

The S-1131B27UC-N4MTFU is a positive voltage regulator from the ABLIC S-1131 Series, designed for high ripple rejection and low dropout performance. It features a fixed output voltage of 2.7 V with an accuracy of ±1.0%. The device supports an output current of up to 300 mA and operates within an input voltage range of 2.0 V to 6.5 V. Typical current consumption during operation is 35 µA, while power-off consumption is 0.1 µA. It includes built-in overcurrent protection and an ON/OFF circuit. The component is housed in a SOT-89-5 package and functions reliably across an ambient temperature range of -40°C to +85°C.

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

• Built-in ON/OFF circuit enables significant reduction in current consumption when disabled, extending battery life in portable applications.
• Integrated overcurrent protection circuit limits output current to prevent damage to the load transistor under fault conditions.
• Low dropout voltage characteristics are achieved through a built-in low on-resistance P-channel MOS FET output transistor.
• High ripple rejection capability ensures stable output voltage despite input noise variations.

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

• Constant-voltage power supply for DVD and CD-ROM drives
• Constant-voltage power supply for battery-powered devices
• Constant-voltage power supply for personal communication devices
• Constant-voltage power supply for notebook PCs

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

Verify the specific ordering suffix UC corresponds to the SOT-89-5 package configuration required for your design. Confirm that the N4TTFx tape specification matches your automated assembly equipment capabilities. Ensure the environmental code U indicates lead-free and halogen-free compliance if required by your manufacturing standards. Cross-reference the product type B (positive logic ON/OFF) with your system control logic levels to guarantee correct activation states.

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

Select this component when a fixed 2.7 V output is required with moderate current demands up to 300 mA. The SOT-89-5 package provides an additional pin for the ON/OFF function compared to the three-pin variant, allowing for external control of the regulator state. Consider the thermal dissipation limits of the package when operating at high input-output voltage differentials or maximum load currents. Verify that the required output capacitor ESR falls within the stable operating range to prevent oscillation.

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

This part belongs to the S-1131 Series of CMOS voltage regulators manufactured by ABLIC Inc. The series is characterized by its combination of middle output current capability, high accuracy, and low power consumption. The S-1131B27UC-N4MTFU specifically utilizes the 'B' product type for positive logic ON/OFF control and the 'UC' package designation for the five-lead SOT-89 form factor.

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

S-1131B27UA-N4MTFU: Identical electrical specifications but housed in a SOT-89-3 package without the ON/OFF pin functionality.

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

How does the ON/OFF pin logic function for the 'B' type product?

For the 'B' type product, applying a High level (≥1.5 V) to the ON/OFF pin activates the regulator, while applying a Low level (≤0.3 V) deactivates it, reducing current consumption to the power-off level.

What is the recommended output capacitor type for stable operation?

A tantalum capacitor with a capacitance of 2.2 µF or more is recommended to ensure stability, as the internal phase compensation relies on the capacitor's Equivalent Series Resistance (ESR).