HT7333 How to use a HT7333 IC?[Video]

The HT7333 is a three-terminal, low-power, high-voltage regulator that uses CMOS technology. The series has a very low quiescent current, which is usually around 3.5A. It accepts input voltages of up to 12V. The device delivers a lot of current with a very low dropout voltage.

A high-precision voltage reference, an error-correcting circuit, and a current limiting output driver make up the HT7333. It comes with a variety of fixed output voltages ranging from 1.8 to 5.0 volts. Low dropout voltage and low current usage are ensured by CMOS technology. These devices can be combined with external components to generate variable voltages and currents while being designed primarily as fixed voltage regulators.

• Ultra-low quiescent current: 3.5µA (Typ.)

• High input voltage (up to 12V)

• Output voltage: 1.8V, 2.5V, 2.7V, 3.0V, 3.3V, 3.5V, 4.15V, 5.0V

• Output voltage accuracy: tolerance ±3%

• Maximum output current: 250mA

• Low dropout voltage

• Low temperature coefficient

• TO-92, SOT-89 package

HT7333 Pinout

HT7333 Block diagram

HT7333 Application Circuit

• Battery-powered equipment

• Voltage regulator for microprocessor

• Voltage regulator for LAN cards

• Wireless Communication equipment

• Audio/Video equipment

• LM1117

• LM723

• LM317

The HT7333 is a 3.3V linear voltage regulator with high efficiency. Because of its low quiescent current and low drop-out voltage, it delivers a regulated voltage of 3.3V with very minimal losses. Quiescent current is the current that leaks out of our regulator even when no load is connected; with the HT7333, this current is only 8uA. The voltage difference between the input and output voltage is known as dropout voltage, and it is also quite small for an HT733 IC. Both of these properties allow us to get the most juice out of a 3.7V Lithium coin cell like the RJD2450, which is why these ICs are so popular.

Supply the input voltage to the V-in pin of the HT7333, and we obtain a regulated 3.3V at the output pin, just like any other linear regulator. Ripple filtering is done with the input and output capacitors. Below is a diagram of a typical application circuit.

HT7333 Package information

Holtek (Holtek Semiconductor) is built on a team that has been working in the field of semiconductor IC design since 1983 and has amassed a large number of intellectual property rights and patents. Local sales and technical service bases have been established in Taiwan, China, and the United States. Holtek Semiconductor, based in Hsinchu Science and Technology Industrial Park, is a professional semiconductor circuit design business. The company currently employs around 300 people, and its primary areas of focus include semiconductor circuit design, research and development, and sales.