S-1131B41UA-N5ATFG

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

The S-1131B41UA-N5ATFG is a positive voltage regulator from the ABLIC S-1131 Series, designed based on CMOS technology. It provides a fixed output voltage of 4.1 V with an accuracy of ±1.0%. The device features a typical dropout voltage of 250 mV at 100 mA and supports an output current up to 300 mA when VIN ≥ VOUT(S) + 1.0 V. Operating current consumption is typically 35 µA during operation and 0.1 µA during power-off. It includes built-in overcurrent protection and an ON/OFF circuit for negative logic control. The component operates within a temperature range of -40°C to +85°C and utilizes a lead-free SOT-89-3 package.

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

• Built-in low on-resistance transistor enables low dropout voltage and large output current capability.
• Integrated overcurrent protection circuit prevents load current from exceeding the output transistor's capacity.
• ON/OFF circuit allows for significant reduction in current consumption to extend battery life in portable devices.

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 against the manufacturer's datasheet to confirm package type and environmental compliance. Confirm that the negative logic ON/OFF pin configuration matches the system design requirements. Ensure input and output capacitor selections meet the stability criteria specified in the application guidelines to prevent oscillation.

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

Select this component for applications requiring a fixed 4.1 V rail with moderate current demands. Verify that the input voltage remains sufficiently above the output voltage to maintain regulation without excessive power dissipation. Consider the thermal limitations of the SOT-89-3 package when designing for high load currents or elevated ambient temperatures.

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

This part belongs to the S-1131 Series of middle output current CMOS voltage regulators. The series offers various fixed output voltages selectable in 0.1 V steps from 1.5 V to 5.5 V. It is characterized by high ripple rejection and low current consumption, making it suitable for precision power management in compact electronic systems.

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

Consult the official product name list for alternative parts within the S-1131 Series offering different output voltages or packages such as SOT-89-5 or 6-Pin HSON(A). Cross-reference specifications with other ABLIC LDO families if higher current or different package constraints are required.