HT7550-1 5V LDO Voltage Regulator IC – 100mA – SOT-89 – Holtek

The HT7550-1 from Holtek is a compact, energy-efficient 5V low-dropout (LDO) voltage regulator housed in a SOT-89 (3-pin) surface-mount package. Providing a stable 5V output with up to 100mA continuous load current (and up to 150mA depending on conditions), this regulator is an excellent choice for low-power and battery-operated electronic designs.

Featuring a very low quiescent current of just 4µA, the HT7550-1 maximizes battery life in portable devices. Its typical dropout voltage of 100mV at 10mA ensures reliable regulation even when the input voltage is only slightly above the output requirement. Supporting input voltages up to 30V, this LDO offers flexibility for a wide range of power supply applications.

Built-in short-circuit protection and thermal shutdown functions enhance system safety, ensuring reliable operation in communication devices, consumer electronics, audio/video equipment, and general embedded designs.

Key Specifications:

• Manufacturer: Holtek

• Part Number: HT7550-1

• Package: SOT-89 (3-pin)

• Output Voltage: Fixed 5V

• Output Current: 100mA (up to 150mA variant-dependent)

• Maximum Input Voltage: Up to 30V

• Dropout Voltage: ~100mV @ 10mA

• Quiescent Current: 4µA typical

• Protections: Short-circuit and thermal shutdown

• ideal for low-power, battery-operated electronics

Package Includes:
1 x HT7550-1 5V LDO Voltage Regulator IC

Note: Image is for representation purpose only.