STMicroelectronicsLD1117S33CTR Low Drop Out 3.3V linear regulator in a SOT-223 SMD PackageLinear Regulators

The LD111733CTR is a linear regulator with fixed output of 3.3V, can supply up to 1.34A and is mounted in a SOT-223 SMD package. The low dropout voltage of 1V (typical @100mA) reduces the power dissipation of the linear regulator.  This is advantageous in scenarios requiring energy efficiency and superior line regulation provided by a linear regulator.  The supply voltage rejection is 75db and has a low noise voltage output of 100µV. The LD1117S33CTR only requires a single 10uF capacitor for stability.

Drawings / Package

Key Features

• Pin compatible/replacement for other 1117 devices

• Low voltage dropout of 1V (typical)

• Output current up to 800mA (1.3A max)

• Supply rejection of 75dB and low noise of 100µV

• Small SOT-223 SMD package

• On-chip trimming for ±1% tolerance at 25°C

• RoHS compliant

General Applications

• Power regulation for low noise circuits

• Power regulation for microcontrollers and other 3.3V devices

• Portable devices requiring LDO regulators and power conservation

• Replacement for non-RoHS 1117 alternatives

Evaluation Board

LD1117S33CTR Low Drop Out 3.3V Linear Regulator by STMicroelectronics

Stable voltages are always needed for sensitive systems implement this LDO LD1117S33CTR linear regulator from STMicroelectronics. This device has a maximum power dissipation of 12000 mW. Its typical dropout voltage at current is 1@100mA|1.05@500mA|1.1@800mA V. It has an overall accuracy of ±1 %. This voltage regulation device's single output can produce a current up to 1.3 A. Use this part at voltages lower than 15 V. With a fixed output that has a voltage of 3.3 V, this is power management at its best. Your circuit has the capability to produce a constant current at its output by using a load regulation of 10mV and line regulation of 6mV. Its maximum power dissipation is 12000 mW. In order to ensure safe delivery and enable quick mounting of this component after delivery, it will be encased in tape and reel packaging during shipment. This voltage regulation device has an operating temperature range of -40 °C to 125 °C. The maximum dropout voltage is 1.1@100mA|1.15@500mA|1.2@800mA V. Its polarity is positive.