LD1117DT12CTR
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STMicroelectronics LD1117DT12CTR

Manufacturer No:
LD1117DT12CTR
Manufacturer:
STMicroelectronics
Package:
Tape & Reel (TR)
Description:
IC REG LINEAR 1.2V 800MA DPAK
Delivery:
Payment:
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Product Introduction

Overview

The LD1117DT12CTR, produced by STMicroelectronics, is a low dropout voltage regulator designed to provide a stable output voltage with high efficiency. This regulator is capable of delivering up to 800 mA of output current and is available in both fixed and adjustable output voltage versions. The fixed versions offer output voltages of 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V, while the adjustable version allows for a reference voltage (VREF) of 1.25 V. The LD1117 series is known for its low dropout voltage, typically around 1 V, and its internal current and thermal limiting features, ensuring reliable operation under various conditions.

Key Specifications

Parameter Min. Max. Unit
Output Voltage (VO) 1.188 1.20 1.212 V
Output Current (IO) 0 - 800 mA
Dropout Voltage (Vd) 1.0 - 1.2 V
Line Regulation (∆VO) 0.035 0.2 - %
Load Regulation (∆VO) 0.1 0.4 - %
Temperature Stability (∆VO) - 0.5 - %
Supply Voltage Rejection (SVR) 60 75 - dB
Quiescent Current (Id) 5 10 - mA
Operating Input Voltage (Vin) - - 15 V
Thermal Resistance Junction-Case (RthJC) - - 15 °C/W
Thermal Resistance Junction-Ambient (RthJA) - - 110 °C/W

Key Features

  • Low Dropout Voltage: Typically 1 V, ensuring minimal voltage loss.
  • High Output Current: Up to 800 mA, suitable for a variety of applications.
  • Fixed and Adjustable Output Voltages: Fixed versions available in 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V; adjustable version with VREF = 1.25 V.
  • Internal Current and Thermal Limiting: Protects the device from overcurrent and overheating.
  • Tight Output Voltage Tolerance: ±1% at 25°C and ±2% over the full temperature range.
  • High Efficiency: Achieved through the use of an NPN pass transistor, where quiescent current flows mostly into the load.
  • Low Quiescent Current: Typically 5-10 mA, contributing to energy efficiency.
  • High Supply Voltage Rejection: Up to 75 dB, ensuring stable output voltage despite input voltage variations.
  • Compact Packages: Available in SOT-223, DPAK, SO-8, and TO-220 packages, optimizing thermal characteristics and space usage.

Applications

  • Power Supplies: Suitable for use in linear power supplies where low dropout voltage and high current capability are required.
  • Embedded Systems: Ideal for powering microcontrollers, sensors, and other components in embedded systems.
  • Industrial Automation: Used in various industrial automation applications where reliable and stable voltage regulation is crucial.
  • Consumer Electronics: Found in consumer electronics such as audio equipment, set-top boxes, and other devices requiring stable power supply.
  • Automotive Systems: Used in automotive systems where robust and reliable voltage regulation is necessary.

Q & A

  1. What is the maximum output current of the LD1117DT12CTR?

    The LD1117DT12CTR can provide up to 800 mA of output current.

  2. What are the available fixed output voltages for the LD1117 series?

    The fixed output voltages available are 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V.

  3. What is the typical dropout voltage of the LD1117DT12CTR?

    The typical dropout voltage is around 1 V.

  4. What is the reference voltage for the adjustable version of the LD1117?

    The reference voltage (VREF) for the adjustable version is 1.25 V.

  5. What are the package options available for the LD1117 series?

    The LD1117 series is available in SOT-223, DPAK, SO-8, and TO-220 packages.

  6. What is the operating input voltage range for the LD1117DT12CTR?

    The operating input voltage range is up to 15 V.

  7. What is the quiescent current of the LD1117DT12CTR?

    The quiescent current is typically between 5-10 mA.

  8. How does the LD1117DT12CTR protect against overcurrent and overheating?

    The device has internal current and thermal limiting features to protect against overcurrent and overheating.

  9. What is the supply voltage rejection of the LD1117DT12CTR?

    The supply voltage rejection is up to 75 dB.

  10. What is the thermal resistance junction-case (RthJC) for the SOT-223 package?

    The thermal resistance junction-case (RthJC) for the SOT-223 package is 15 °C/W.

Product Attributes

Output Configuration:Positive
Output Type:Fixed
Number of Regulators:1
Voltage - Input (Max):15V
Voltage - Output (Min/Fixed):1.2V
Voltage - Output (Max):- 
Voltage Dropout (Max):1.3V @ 800mA
Current - Output:800mA
Current - Quiescent (Iq):5 mA
Current - Supply (Max):- 
PSRR:75dB (120Hz)
Control Features:- 
Protection Features:Over Current, Over Temperature
Operating Temperature:-40°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:TO-252-3, DPak (2 Leads + Tab), SC-63
Supplier Device Package:DPAK
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Similar Products

Part Number LD1117DT12CTR LD1117DT12TR LD1117DT18CTR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Active Active
Output Configuration Positive Positive Positive
Output Type Fixed Fixed Fixed
Number of Regulators 1 1 1
Voltage - Input (Max) 15V 15V 15V
Voltage - Output (Min/Fixed) 1.2V 1.2V 1.8V
Voltage - Output (Max) - - -
Voltage Dropout (Max) 1.3V @ 800mA 1.2V @ 800mA 1.3V @ 800mA
Current - Output 800mA 800mA 800mA
Current - Quiescent (Iq) 5 mA 5 mA 10 mA
Current - Supply (Max) - - -
PSRR 75dB (120Hz) 75dB (120Hz) 75dB (120Hz)
Control Features - - -
Protection Features Over Current, Over Temperature Over Current, Over Temperature Over Current, Over Temperature
Operating Temperature -40°C ~ 125°C 0°C ~ 125°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case TO-252-3, DPak (2 Leads + Tab), SC-63 TO-252-3, DPak (2 Leads + Tab), SC-63 TO-252-3, DPak (2 Leads + Tab), SC-63
Supplier Device Package DPAK DPAK DPAK

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