S-1121B51MC-N3KTFG

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

The ABLIC Inc. S-1121B51MC-N3KTFG is a positive voltage regulator from the S-1121 Series, developed based on CMOS technology. It provides a fixed output voltage of 5.1 V with an accuracy of ±1.0%. The device features a typical dropout voltage of 0.17 V at 100 mA and supports an output current of up to 150 mA. Current consumption during operation is typically 35 μA, while power-off consumption is 0.1 μA. It includes built-in overcurrent protection and an ON/OFF circuit for battery life extension. The component operates within an ambient temperature range of -40°C to +85°C and is housed in an SOT-23-5 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 stopping internal operation to significantly reduce current consumption during power-off.
• High ripple rejection characteristic ensures stable performance against input voltage fluctuations.

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

• Power supply for battery-powered devices
• Power supply for personal communication devices
• Power supply for home electric/electronic appliances
• Power supply for cellular phones

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

Verify the specific ordering suffix N3KTFG against official documentation to confirm pin configuration and environmental compliance. Ensure that the selected output capacitor meets the equivalent series resistance requirements for stability. Confirm that the application design accounts for the package power dissipation limits when operating near maximum current ratings.

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

Select this component for applications requiring a fixed 5.1 V output with high accuracy. Consider the SOT-23-5 package size for high-density mounting constraints. Evaluate the need for the ON/OFF functionality to manage standby power consumption. Ensure the input voltage remains within the specified absolute maximum ratings to prevent damage.

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

This part belongs to the S-1111/1121 Series of high ripple-rejection, low dropout CMOS voltage regulators manufactured by Seiko Instruments Inc., now associated with ABLIC. The S-1121 variant differs from the S-1111 series primarily in its pin configuration. These regulators are designed for portable electronic devices where low current consumption and small footprint are critical design parameters.

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

S-1111B51MC-NZKTFx