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LD1117DT33C

3.3 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSSO2

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Overview of LD1117DT33C

The LD1117DT33C is a low drop fixed and adjustable positive voltage regulator IC capable of providing up to 800mA of output current. It is designed for use in various power supply applications where a stable and reliable voltage source is required.

Pinout

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

  • ADJ: Adjustable output
  • Vout: Regulated output voltage
  • Vin: Input voltage
  • GND: Ground connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the LD1117DT33C IC for a visual representation.

Key Features

  • Low Dropout Voltage: The LD1117DT33C features a low dropout voltage, allowing it to regulate output voltage even when input voltage is only slightly higher than the desired output voltage.
  • Adjustable Output: The ADJ pin allows for an adjustable output voltage, providing flexibility in various power supply designs.
  • Thermal Overload Protection: Built-in thermal overload protection ensures safe operation under high temperature conditions.
  • Short Circuit Protection: The IC is equipped with short circuit protection to safeguard against damaging current surges.
  • Wide Operating Temperature Range: Operates across a wide temperature range making it suitable for diverse environmental conditions.

Note: For detailed technical specifications, please refer to the LD1117DT33C datasheet.

Application

  • Power Supply Regulation: Ideal for regulating voltage in power supply circuits for microcontrollers, sensors, and other electronic components.
  • Battery-Powered Devices: Suitable for use in battery-powered devices to maintain a stable voltage level for efficient operation.
  • Embedded Systems: Used in various embedded systems and IoT devices requiring precise voltage regulation.

Functionality

The LD1117DT33C is a low dropout voltage regulator that provides stable and reliable output voltage for a wide range of electronic applications, ensuring consistent performance and protection against voltage fluctuations.

Usage Guide

  • Input Voltage: Connect Vin (Input) to the unregulated voltage source.
  • Output Voltage: Use the ADJ pin to adjust the output voltage or connect Vout directly for fixed output.
  • Ground Connection: Connect GND pin to system ground.

Frequently Asked Questions

Q: What is the maximum output current of the LD1117DT33C?
A: The LD1117DT33C can provide a maximum output current of 800mA, making it suitable for a wide range of low to moderate power applications.

Q: Is the LD1117DT33C suitable for automotive applications?
A: Yes, the LD1117DT33C's wide operating temperature range and built-in protections make it suitable for automotive electronics and power supply regulation.

Equivalent

For similar functionalities, consider these alternatives to the LD1117DT33C:

  • LM317: A widely used adjustable positive voltage regulator with similar features and performance characteristics to the LD1117DT33C.
  • LM1117: This is a low dropout voltage regulator with fixed output voltage options, providing stable voltage regulation for various electronic devices.

Specifications

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

Source Content uid LD1117DT33C Pbfree Code Yes
Rohs Code Yes Part Life Cycle Code Obsolete
Ihs Manufacturer STMICROELECTRONICS Part Package Code TO-252
Package Description TO-252, SMSIP3H,.38,90TB Pin Count 3
Reach Compliance Code not_compliant ECCN Code EAR99
HTS Code 8542.39.00.01 Samacsys Manufacturer STMicroelectronics
Adjustability FIXED Dropout Voltage1-Max 1.3 V
Dropout Voltage1-Nom 1.3 V Input Voltage Absolute-Max 15 V
Input Voltage-Max 15 V Input Voltage-Min 4.75 V
JESD-30 Code R-PSSO-G2 JESD-609 Code e3
Length 6.5 mm Line Regulation-Max 0.03%
Load Regulation-Max 0.03% Moisture Sensitivity Level 1
Number of Functions 1 Number of Outputs 1
Number of Terminals 2 Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min -40 °C Output Current1-Max 0.8 A
Output Voltage1-Max 3.44 V Output Voltage1-Min 3.16 V
Output Voltage1-Nom 3.3 V Package Body Material PLASTIC/EPOXY
Package Code TO-252 Package Equivalence Code SMSIP3H,.38,90TB
Package Shape RECTANGULAR Package Style SMALL OUTLINE
Peak Reflow Temperature (Cel) 260 Qualification Status Not Qualified
Regulator Type FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR Seated Height-Max 2.63 mm
Surface Mount YES Technology BIPOLAR
Terminal Finish Matte Tin (Sn) - annealed Terminal Form GULL WING
Terminal Pitch 2.28 mm Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) 30 Voltage Tolerance-Max 4%
Width 6.1 mm

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