HT7533-1 3.3V LDO Voltage Regulator IC – 100mA – SOT-89 – Holtek

The HT7533-1 from Holtek is a compact, low-dropout (LDO) 3.3V positive voltage regulator designed for efficient power management in low-power and battery-operated electronic devices. Packaged in a SOT-89 (3-pin) surface-mount package, this regulator provides a stable 3.3V output with a maximum load current of 100mA.

Featuring a low quiescent current of just 4µA, the HT7533-1 is ideal for energy-efficient designs where battery life is critical. Its dropout voltage of approximately 300mV at 100mA ensures reliable regulation even with minimal input-to-output voltage difference. Supporting input voltages up to 30V, it provides excellent flexibility for a wide range of power supply applications.

Built-in overcurrent protection and thermal shutdown enhance safety and reliability, making this regulator suitable for communication devices, portable electronics, sensors, and embedded systems requiring low-power operation.

Key Specifications:

• Manufacturer: Holtek

• Part Number: HT7533-1

• Package: SOT-89 (3-pin)

• Output Voltage: 3.3V fixed

• Maximum Output Current: 100mA

• Maximum Input Voltage: Up to 30V

• Dropout Voltage: ~300mV @ 100mA

• Quiescent Current: 4µA typical

• Protections: Overcurrent & thermal shutdown

Package Includes:
1 x HT7533-1 3.3V LDO Voltage Regulator IC

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