S-1333B28-M5T1U3

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

The S-1333B28-M5T1U3 is a positive voltage regulator IC from the S-1333 Series, manufactured by ABLIC Inc. using CMOS technology. It operates with an input voltage range of 1.5 V to 5.5 V and provides a fixed output voltage of 2.8 V with ±1.0% accuracy. The device supports up to 300 mA output current and features low dropout voltage characteristics. It includes built-in overcurrent protection and thermal shutdown circuits for enhanced reliability.

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

• Built-in discharge shunt function for rapid output capacitor discharge when the ON/OFF pin is set to OFF level.
• High ripple rejection capability ensuring stable power supply performance under varying load conditions.
• Integrated thermal shutdown circuit prevents damage caused by excessive heat generation during operation.

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

• Constant-voltage power supply for portable communication devices
• Power management for battery-powered digital cameras
• Voltage regulation for digital audio players

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

Verify the specific B-type designation confirms the presence of the discharge shunt function and absence of the pull-down resistor. Ensure the M5T1 suffix corresponds to the SOT-23-5 package with tape packing specifications. Confirm environmental compliance codes match lead-free and halogen-free requirements before finalizing procurement orders.

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

Select this component when a fixed 2.8 V output is required with high accuracy. The B-type variant is suitable for applications needing fast output discharge but not requiring internal pull-down on the control pin. Consider package power dissipation limits when designing for maximum output currents or high ambient temperatures.

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

This part belongs to the S-1333 Series of 5.5 V input, 300 mA voltage regulators. The series offers multiple product types (A-D) distinguished by their ON/OFF logic behavior and internal discharge/pull-down configurations. The S-1333B variant specifically enables the discharge shunt while disabling the pull-down resistor.

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

S-1333A28-M5T1U3: Includes pull-down resistor; S-1333C28-M5T1U3: Includes pull-down but lacks discharge shunt; S-1333D28-M5T1U3: Lacks both functions. Verify functional compatibility regarding ON/OFF pin handling and output discharge speed.