S-L2980A42MC-TF-G

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

The S-L2980A42MC-TF-G is a positive voltage regulator from the S-L2980 Series, developed using CMOS technology. It provides a fixed output voltage of 4.2 V with an accuracy of ±2.0%. The device features a low dropout voltage of 120 mV typical at 50 mA and supports an output current up to 150 mA when the input voltage exceeds the output by 1.0 V. Current consumption is 90 µA typical during operation and 0.1 µA in power-off mode. It includes a built-in ON/OFF circuit for battery life extension and operates within a temperature range of –40°C to +85°C.

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

• Built-in ON/OFF circuit enables deep sleep mode to extend battery life in portable devices.
• Low dropout voltage achieved through a low on-resistance P-channel MOS FET output transistor.
• Compatible with small ceramic capacitors (1.0 µF or more) for phase compensation.
• High ripple rejection capability ensures stable output under noisy power supply conditions.

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 appliances
• Power supply for cellular phones

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

Verify the environmental code suffix 'G' against ABLIC's specific lead-free specifications, as it differs from the standard 'U' designation. Confirm that the application design accounts for package power dissipation limits, particularly when operating near maximum load currents. Ensure the input capacitor meets the minimum requirement of 0.47 µF to prevent oscillation.

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

Select this component for applications requiring a precise 4.2 V rail with minimal quiescent current draw. The SOT-23-5 package suits space-constrained designs. Verify that the external output capacitor has an ESR of 10 Ω or less to maintain stability. Consider the ON/OFF pin logic level requirements relative to the system control signals.

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

This part belongs to the S-L2980 Series of high ripple-rejection and low dropout CMOS voltage regulators. The series offers selectable output voltages from 1.5 V to 6.0 V in 0.1 V steps. All variants share common electrical characteristics regarding current consumption, ripple rejection, and operational temperature ranges, differing primarily in their fixed output voltage settings.

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

Other S-L2980 Series parts with different output voltages (e.g., S-L2980A40MC-TF-G) are pin-compatible but provide different regulated voltages. Substituting with a different series requires verification of pinout compatibility and electrical parameter alignment.