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HT7333 High Efficiency 3.3V Linear Voltage Regulator

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The HT7333 is high efficiency 3.3V linear voltage regulator providing a regulated voltage of 3.3V

 

Pin Configuration

Pin Number

Pin Name

Description

1

Ground

Ground pin of the Regulator

2

Vin

Input Voltage pin of the regulator

3

Vout

Output Voltage pin

 

Features

  • 3.3V High efficiency Linear voltage regulator
  • Maximum Input Voltage: 12V
  • Output Voltage: 3.3V
  • Minimum Input Voltage: 3.3V + 170mV (Drop-out)
  • Very low Quiescent Current: 8uA
  • Available in 3-pin TO-92 and SOT-89 packages

Note: Complete Technical Details can be found at the datasheet provided at the end of this page.

 

Similar Voltage Regulators Registers

S.No:

Name

Type

1

HT7318

1.8V

2

HT7325

2.5V

3

HT7327

2.7V

4

HT7330

3.0V

5

HT7333

3.3V

6

HT7335

3.5V

7

HT7350

5.0V

 

Alternative voltage regulators

LM1117, LM723, LM317

 

Why HT7333 is commonly used in battery powered applications?

The HT7333 is a high efficiency 3.3V linear voltage regulator. It provides a regulated voltage of 3.3V with very low losses because of its low quiescent current and low drop-out voltage. Quiescent current is the current that gets leaked out through our regulator even when no load is connected this current is only of 8uA for HT7333. Dropout voltage is the voltage difference between the Input voltage and output voltage, which is also very less for a HT733 IC. Both these characteristics helps us to extract all the juice from a 3.7V Lithium coin cell like RJD2450, hence these IC’s are widely used along with it.

 

How to use a HT7333 IC

The HT7333 application is similar to any other linear regulators, Supply the input voltage to V-in pin and we get the regulated 3.3V at the output pin. The input and output capacitors are used for ripple filtering. A sample application circuit is shown below

HT7333 Application Circuit

 

Applications

  • Portable battery powered applications
  • 3.3V digital circuits
  • Reference voltage circuits
  • Audio/Video sampling circuits

 

2D-Model

The dimensions of the SOT-89 package is shown below this should help you for PCB footprint creation. HT7333 is also available in the TO-92 package which can be found in the datasheet linked further below,

HT7333 2d-model

Component Datasheet