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    Parts    LD1117S18CTR
LD1117S18CTR

LD1117S18CTR

STMicroelectronics
Linear Voltage Regulator IC Positive Fixed 1 Output 800mA SOT-223
Active7,735 in stock
Datasheet Digi-Key Compare Prices

Overview

The LD1117S18CTR is an 800mA low dropout (LDO) linear voltage regulator with a fixed 1.8V output. It features internal current and thermal limits for robust operation. This component is suitable for various applications requiring a stable and regulated power supply from an input voltage up to 15V.

Why Choose This Part

This regulator offers internal over-current and thermal protection, enhancing system reliability. Its low dropout voltage ensures efficient operation even when the input voltage is only slightly above the output. With a quiescent current of typically 5mA, it is suitable for power-sensitive applications.

Applications

General Purpose Power Supplies
Providing a stable 1.8V regulated output for a wide range of digital and analog circuits.
Microcontroller Power Rails
Supplying power to microcontrollers and other low-voltage digital ICs that require a 1.8V supply.
Sensor Powering
Regulating power for various sensors, ensuring a clean and consistent voltage supply for accurate readings.
Portable Electronics
Efficiently regulating voltage in battery-powered devices where a stable 1.8V is needed for core components.
FPGA/CPLD Core Voltage
Delivering a reliable 1.8V supply for the core logic of FPGAs and CPLDs.

Key Specifications

PSRR 75dB (120Hz)
Output Type Fixed
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Current - Output 800mA
Protection Features Over Current, Over Temperature
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC
Voltage - Input (Max) 15V
Voltage Dropout (Max) 1.3V @ 800mA
Supplier Device Package SOT-223
Current - Quiescent (Iq) 10 mA
Voltage - Output (Min/Fixed) 1.8V

Getting Started

To get started with the LD1117S18CTR, simply connect the input voltage (VIN) and ground, and connect the output (VOUT) to your load. A small output capacitor (typically 1uF to 10uF) is recommended for stability. Consult the datasheet for specific capacitor values and layout recommendations to ensure optimal performance.