TPS78633DCQ

Name: TPS78633DCQ
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

Positive Linear Drop-Out Regulator with 3.3 Volts Output Voltage, 1.5 Amps Current Rating, in a 6-Pin SOT-223 Package, Packaged in Tube

3,181 Effective Inventory

TPS78633DCQ

Effective Inventory3,181

Positive Linear Drop-Out Regulator with 3.3 Volts Output Voltage, 1.5 Amps Current Rating, in a 6-Pin SOT-223 Package, Packaged in Tube

Manufacturer Part # : TPS78633DCQ
Package/Case: SOT-223 (DCQ)-6
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Series : TPS78633

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TPS78633DCQ DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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TPS78633DCQ Details

The TPS78633DCQ is a high-performance LDO voltage regulator from Texas Instruments, designed to provide a stable and low-noise power supply for sensitive electronic components. This regulator offers a fixed output voltage of 3.3V with a high PSRR and low dropout voltage, making it suitable for a wide range of applications that require reliable power delivery.

Pinout

1 (VIN): Input Voltage
2 (GND): Ground
3 (EN): Enable Pin
4 (NC): No Connection
5 (VOUT): Output Voltage (3.3V)

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

Low Dropout Voltage: Ensures stable operation even with small voltage differentials.
High PSRR: Provides excellent power supply rejection ratio for noise-sensitive applications.
Fixed Output Voltage: Output voltage is fixed at 3.3V, eliminating the need for external adjustments.
Current Limit and Thermal Protection: Built-in protection features to safeguard the regulator and connected components.
Low-Noise Performance: Delivers clean and stable power for noise-sensitive circuits.

Application

Embedded Systems: Ideal for providing power to microcontrollers, sensors, and other embedded components.
Audio Amplifiers: Suitable for powering audio amplifiers and DACs requiring low-noise power sources.
Wireless Modules: Used in wireless communication modules for stable power supply.

Where to Use

The TPS78633DCQ is recommended for applications that demand a reliable and noise-free 3.3V power source. It is particularly effective in embedded systems, audio equipment, and wireless modules where clean power is critical for optimal performance.

How to Use

Connect the VIN pin to the input voltage source and the GND pin to the ground. Apply a control signal to the EN pin to enable or disable the regulator. The VOUT pin provides a stable 3.3V output for your circuit. Ensure proper decoupling and thermal considerations for best performance. For detailed operational guidance, refer to the datasheet.

Application Circuit

The application circuit for the TPS78633DCQ demonstrates the proper connection of the regulator in a typical power supply setup. It includes input, output, and control signal connections for seamless integration and reliable power delivery.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

LM2937-3.3: Comparable LDO voltage regulator with similar features and performance.
XC6206P332MR: Alternative fixed-output LDO regulator offering stable 3.3V supply.

Complementary

The TPS78633DCQ can be paired with the TPS79933DDCT, a low-dropout regulator with adjustable output voltage, to meet varying power supply requirements in the same circuit.

When selecting complementary regulators, ensure compatibility and performance alignment for efficient power management.

Frequently Asked Questions

Q: What is the dropout voltage of the TPS78633DCQ?

A: The TPS78633DCQ features a low dropout voltage, typically in the range of a few hundred millivolts, ensuring stable regulation even with small input-output differentials.

Q: Is the TPS78633DCQ suitable for audio applications?

A: Yes, the TPS78633DCQ is well-suited for audio applications due to its low-noise performance and stable power delivery, making it ideal for audio amplifiers and DAC circuits.

Specifications

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)	1.5
Vin (max) (V)	5.5	Vin (min) (V)	2.7
Vout (max) (V)	5.2	Vout (min) (V)	1.22
Fixed output options (V)	1.8, 2.5, 2.8, 3, 3.3	Noise (µVrms)	48
Iq (typ) (mA)	0.26	Thermal resistance θJA (°C/W)	41
Rating	Catalog	Load capacitance (min) (µF)	1
Regulated outputs (#)	1	Features	Enable, Soft start
Accuracy (%)	2	PSRR at 100 KHz (dB)	32
Dropout voltage (Vdo) (typ) (mV)	390	Operating temperature range (°C)	-40 to 125

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification TPS78633DCQ PDF Download

FAQs

What is TPS78633DCQ?

The TPS78633DCQ is a high-performance low-dropout (LDO) voltage regulator developed by Texas Instruments. It is designed to provide a stable and accurate output voltage with low dropout voltage and excellent line and load transient performance. The regulator is ideal for powering sensitive analog or digital circuits in various electronic systems.

How Does TPS78633DCQ Work?

The TPS78633DCQ operates by regulating the input voltage to provide a precise and stable output voltage. It utilizes a feedback control loop to adjust the pass device and maintain the desired output voltage, while minimizing dropout voltage and responding effectively to changes in input or output conditions. The device offers high power supply rejection and low output noise, making it suitable for noise-sensitive applications.

How Many Pins does TPS78633DCQ have and What are the Functions of the Pinout Configuration?

The TPS78633DCQ is housed in a 5-pin DDPAK/TO-263 package. The pinout configuration includes:

IN: Input voltage pin.
GND: Ground pin.
EN: Enable pin for enabling or disabling the regulator.
BP: Bypass pin for connecting an external capacitor to improve transient response.
OUT: Regulated output voltage pin.

What are the Pros and Cons of TPS78633DCQ?

Pros:

Low Dropout Voltage: Provides stable output voltage even when the input voltage is only slightly higher than the output voltage.
High Accuracy: Offers precise output voltage regulation for critical applications.
Low Output Noise: Suitable for powering noise-sensitive circuits without introducing interference.
Enable Pin: Allows for easy power management by enabling or disabling the regulator as needed.
Thermal Shutdown and Overcurrent Protection: Enhances device safety and reliability.

Cons:

Heat Dissipation: May require heatsinking or thermal considerations at higher output currents.
External Components: Additional external components such as input and output capacitors may be required for optimal performance in specific applications.

Are There Any Equivalents/Alternatives to TPS78633DCQ for Recommendation?

The LM2940 from Texas Instruments is a comparable low-dropout voltage regulator with similar features.
Alternatives to the TPS78633DCQ include the MIC29302 from Microchip Technology and the LT1763 from Analog Devices.