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LD1117DT33

Name: LD1117DT33
Rating: 4.7 (12 reviews)

IC REG LINEAR 3.3V 800MA DPAK

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規格

Part Status	Obsolete
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	15V
Voltage - Output (Min/Fixed)	3.3V
Voltage Dropout (Max)	1.2V @ 800mA
Current - Output	800mA
Current - Quiescent (Iq)	10 mA
PSRR	75dB (120Hz)
Protection Features	Over Current, Over Temperature
Operating Temperature	0°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package	DPAK
Base Product Number	LD1117

概述

Description

The LD1117DT33 is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 3.3V. It features high output current capability, typically up to 800 mA, making it suitable for powering various electronic devices. The LDO operates with a low dropout voltage of around 1.2V at full load, allowing it to maintain regulation even with a minimal difference between input and output voltages.
This component is designed for efficiency and thermal performance, equipped with built-in thermal shutdown and current limiting features to protect against overload conditions. The LD1117DT33 also has a fast transient response, ensuring stable output during load variations.
It typically comes in a TO-220 package, which facilitates effective heat dissipation, making it ideal for applications in consumer electronics, automotive systems, and industrial equipment. Overall, the LD1117DT33 is a reliable choice for applications requiring a consistent 3.3V supply under varying load conditions.

Features

The LD1117DT33 is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 3.3V. Key features include:
1. Input Voltage Range: Operates with an input voltage ranging from 4.75V to 15V.
2. Output Current: Supports a maximum output current of 800mA.
3. Dropout Voltage: Typically low dropout voltage of about 1.2V at full load, allowing efficient performance.
4. Thermal Protection: Equipped with thermal shutdown to prevent overheating.
5. Short Circuit Protection: Includes current limiting to protect against short circuits.
6. Package: Available in a TO-220 package, facilitating easy heat dissipation and PCB mounting.
7. Stability: Compatible with a wide range of output capacitors, ensuring stable operation with minimal external components.
The LD1117DT33 is suitable for various applications, including microcontroller power supplies, portable devices, and other electronic circuits requiring a stable 3.3V output.

Package

The LD1117DT33 is typically packaged in a TO-220 package type, which is a type of surface-mounted device (SMD) package. This package features three pins and is designed for efficient heat dissipation, making it suitable for voltage regulation applications.

Pinout

The LD1117DT33 is a low-dropout (LDO) voltage regulator with a pin count of 3.
Pin Functions:
1. Input (Vin) - This pin connects to the input supply voltage, which should be higher than the output voltage by at least the dropout voltage.
2. Output (Vout) - This pin provides the regulated output voltage, which, in the case of the LD1117DT33, is fixed at 3.3V.
3. Ground (GND) - This pin is the reference ground for the device.
The LD1117 series is known for its low dropout voltage, allowing it to operate efficiently with minimal difference between input and output voltages. It is commonly used in applications requiring a stable 3.3V output from higher voltage sources.

Manufacturer

The LD1117DT33 is manufactured by multiple companies, with one of the prominent manufacturers being STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, and manufactures a broad range of integrated circuits and semiconductor devices. The company serves various markets, including automotive, industrial, personal electronics, and communication equipment. STMicroelectronics is known for its innovation in microcontrollers, power management, and sensor technologies, making it a key player in the electronics industry.

Application

The LD1117DT33 is a low-dropout (LDO) voltage regulator commonly used in various application areas, including power management for microcontrollers, sensors, and other integrated circuits. It provides a stable output voltage of 3.3V, making it suitable for powering communication devices, automotive electronics, portable devices, and battery-powered applications. Its compact package and efficiency make it ideal for space-constrained designs requiring reliable voltage regulation.

Equivalent

Equivalent products to the LD1117DT33 voltage regulator include the LM1117-3.3, LM317 (with external resistors for fixed output), MIC2940-3.3, and AMS1117-3.3. These alternatives provide similar low-dropout voltage regulation at 3.3V output. Always check the specifications for compatibility in terms of current, dropout voltage, and thermal performance.