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Understanding the TL783 Adjustable Regulator

The TL783, developed by Texas Instruments, is a high-voltage adjustable regulator that has become a staple in precision power management. In this article, we’ll explore its key features, including its pinout, pricing, datasheet, and versatile applications. From regulating power in intricate systems to providing stable voltage across a wide range, the TL783 stands out for its adaptability and reliability. Whether looking to optimize your designs or someone curious about its economic considerations, this post digs into the practical and technical aspects that make the TL783 an exceptional component.

Catalog

TL783 Analysis

The TL783 is a versatile three-terminal adjustable regulator, skillfully designed to provide a consistent voltage output ranging from 1.25V to 125V DC. It incorporates an integrated DMOS MOSFET, enabling a robust current flow of up to 700 mA throughout this voltage span. This component excels in high-voltage applications where standard bipolar regulators, like the LM338, fail to meet demands. Enhanced voltage regulation arises from a blend of traditional bipolar circuit elements and a meticulously tailored high-voltage, double-diffused MOSFET output stage.

Unlike traditional BJT designs, the TL783 adeptly manages higher voltage levels, addressing common challenges such as secondary breakdown and thermal runaway with thoughtful design strategies. The regulator exhibits exceptional performance in overload protection, ensuring reliable operation even in challenging conditions with voltage differentials reaching 125V. These traits highlight its role in demanding applications, where production precision and stability are the focus.

The TL783 extends beyond basic functionality with additional safety features, including over-current protection, safe operating area (SOA) protection, and thermal shutdown. These features carry on effectively even if the ADJ pin is disconnected, testifying to a robust design that anticipates user error or wiring issues. In practical scenarios, you can leverage these protections to boost system lifespan and performance, mostly in environments sensitive to voltage fluctuations, indicating foresight and an understanding of challenges.

Pinout of TL783

NAME	PIN			TYPE	DESCRIPTION
	KC TO-220	KTE PowerFLEX™	KTT TO-263
ADJ	1	1	1	I/O	Voltage adjustment pin. Connect a resistor divider to determine the output voltage.
IN	3	3	3	I	Supply Input
OUT	2	2	2	O	Voltage Output

CAD Model of TL783

Footprint

3D Model

TL783 Characteristics

Feature	Description
Output Current	700 mA
Ripple Rejection (Typical)	76 dB
Output Voltage Regulation (Typical)	0.15%
Input Voltage Regulation (Typical)	0.001%/V
Protection Mechanisms	Full short-circuit, safe-operating-area, and thermal-shutdown protection
Adjustable Output Voltage	1.25 V to 125 V (when used with an external resistor divider and thermal-shutdown protection)

Specifications of TL783

This table organizes the technical specifications and attributes for the Texas Instruments TL783CKC adjustable regulator.

Type	Parameter
Mount	Through Hole
Package / Case	TO-220
Number of Pins	220
Packaging	Rail/Tube
Pbfree Code	No
Number of Terminations	3
ECCN Code	EAR99
Max Operating Temperature	125°C
Min Operating Temperature	0°C
Terminal Position	SINGLE
Peak Reflow Temperature (°C)	Not Specified
Number of Functions	1
Terminal Pitch	2.54mm
Time @ Peak Reflow Temperature (s)	Not Specified
Pin Count	3
JESD-30 Code	R-PSFM-T3
Number of Outputs	1
Qualification Status	Not Qualified
Output Type	Adjustable
Polarity	Positive
Quiescent Current	15mA
Max Output Voltage	125V
Voltage - Output	125V
Min Input Voltage	21.5V
Max Input Voltage	150V
Dropout Voltage	10V
Min Output Voltage	1.25V
Min Current Limit	700mA
Line Regulation - Max (%/V)	0.02
Input-Output Voltage Differential - Min	20V
RoHS Status	RoHS Compliant
Lead Free	Contains Lead

Functional Block Diagram of TL783

Layout Example of TL783

TL783 Use Cases

Printing and Imaging Solutions

The TL783 voltage regulator finds frequent application in printers and imaging devices. Maintaining stable voltage ensures consistent print quality and reliable performance. The low dropout feature enhances energy efficiency, a consideration active due to the constant operation of these devices. This stability in power regulation can lead you to a more satisfying experience by reducing interruptions and maintaining productivity.

Retail and Payment Systems

In electronic point of sale (POS) systems, the TL783 facilitates dependable power delivery, which plays a major role in the seamless completion of transactions. In retail, with its bustling customer dynamics, POS systems must perform reliably under diverse conditions. Consistent voltage regulation is required to prevent disruptions, especially during peak periods, ensuring that customer interactions are smooth and memorable.

Home Appliance Innovations

Today's appliances are embedded with advanced electronic controls, where the TL783 guarantees a stable power supply. This reliable performance not only enhances durability and efficiency but also elevates your satisfaction. The integration of such components showcases a shift toward smarter appliances, meeting the evolving preferences of modern consumers seeking better functionality and convenience.

Healthcare Equipment Reliability

Medical devices demand precision and reliability. The TL783’s stable voltage output powers basic components in diagnostic and monitoring tools, enhancing the accuracy of health assessments. By ensuring consistent performance, these devices better support you in delivering exemplary patient care, impacting lives positively and profoundly.

Fitness Technology Applications

In fitness technology, devices require effective and compact power regulation. The TL783 supports trends in miniaturization for wearables, making them robust and portable. With a growing demand for durable fitness gadgets, this regulator enables continuous health tracking, catering to those who strive to meet their wellness goals.

TL783 Packaging

TL783 Producer

Located in the vibrant city of Dallas, Texas, Texas Instruments (TI) is a notable American technology powerhouse focusing on semiconductors and integrated circuits. This specialization bolsters an expansive global network of electronic designers and manufacturers. With a commanding position in the semiconductor sector, TI draws a remarkable portion of its income from analog chips and embedded processors, accounting for over 80% of its returns.

TI’s impact reaches far beyond financial metrics, reflecting a deeper technological resonance. Their analog chips play a major role in converting tangible data into digital formats, basic to consumer electronics and industrial functions. Embedded processors enrich the capability and performance of diverse devices, providing the required computational capacity.

TI extends its influence with digital light processing technology, driving forward displays and projection technologies. Their educational products, such as calculators and microcontrollers, enhance their reputation in academic circles. By 2016, TI's extensive intellectual property portfolio included 45,000 patents globally, emphasizing its innovative spirit.

Datasheet PDF

TL783CKC Datasheets:

TL783.pdf

TL783.pdf