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500mA Fixed 3.3V Linear Voltage Regulator

Quantity Unit Price(USD) Ext. Price
1 $1.917 $1.92
10 $1.655 $16.55
30 $1.490 $44.70
100 $1.250 $125.00
500 $1.173 $586.50
1000 $1.140 $1,140.00


*The price is for reference only.
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Overview of TPS7333QDR

The TPS7333QDR is a low-dropout (LDO) voltage regulator IC that offers high accuracy and low quiescent current, making it ideal for various power management applications. This IC operates with input voltages up to 20V and provides a fixed output voltage with low dropout voltage, ensuring stable power supply for electronic devices.


(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • EN: Enable Pin
  • VIN: Input Voltage
  • GND: Ground
  • VOUT: Output Voltage

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the TPS7333QDR IC for a visual representation.

Key Features

  • Low Dropout Voltage: The TPS7333QDR features a low dropout voltage, allowing for reliable regulation of the output voltage even with small input-output differentials.
  • High Accuracy: This LDO regulator offers high output voltage accuracy, ensuring precise voltage regulation in electronic systems.
  • Low Quiescent Current: With low quiescent current consumption, the TPS7333QDR helps conserve power and extend battery life in portable devices.
  • Wide Input Voltage Range: The IC can accept input voltages up to 20V, suitable for a wide range of voltage supply applications.
  • Short-Circuit and Thermal Protection: Includes built-in protection features to safeguard the IC and connected components from damage due to short circuits and overheating.

Note: For detailed technical specifications, please refer to the TPS7333QDR datasheet.


  • Power Management: Ideal for power management applications requiring stable and accurate voltage regulation.
  • Battery-Powered Devices: Suitable for use in battery-powered devices such as portable electronics and IoT devices.
  • Embedded Systems: Commonly used in embedded systems and microcontroller-based applications for voltage regulation.


The TPS7333QDR is a high-performance LDO voltage regulator that ensures precise and stable output voltage for various electronic devices. It offers efficiency and reliability in power management applications.

Usage Guide

  • Connection: Connect VIN (Input Voltage) and GND (Ground) appropriately and ensure EN (Enable Pin) is set according to the application requirements.
  • Output: VOUT (Output Voltage) provides the regulated voltage suitable for powering components in the system.
  • Protection: Monitor for short circuits and ensure proper heat dissipation for optimal performance and longevity.

Frequently Asked Questions

Q: What is the maximum input voltage supported by the TPS7333QDR?
A: The TPS7333QDR can handle input voltages up to 20V, providing flexibility in various power supply scenarios.

Q: Does the TPS7333QDR offer thermal protection?
A: Yes, the TPS7333QDR includes thermal protection mechanisms to prevent overheating and ensure reliable operation.


For similar functionalities, consider these alternatives to the TPS7333QDR:

  • LM2937: A low-dropout voltage regulator from Texas Instruments with comparable performance characteristics to the TPS7333QDR.
  • ADP3338: This LDO regulator from Analog Devices offers similar precision and input voltage range as the TPS7333QDR for power management applications.


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.5
Vin (max) (V) 10 Vin (min) (V) 2.47
Vout (max) (V) 9.75 Vout (min) (V) 1.2
Fixed output options (V) 2.5, 3, 3.3, 4.8, 5 Noise (µVrms) 74
Iq (typ) (mA) 0.34 Thermal resistance θJA (°C/W) 106
Rating Catalog Load capacitance (min) (µF) 10
Regulated outputs (#) 1 Features Enable, Power good
Accuracy (%) 2 PSRR at 100 KHz (dB) 8
Dropout voltage (Vdo) (typ) (mV) 270 Operating temperature range (°C) -40 to 125, -40 to 85

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