LD1117S33CTR Low Drop Out 3.3V linear regulator in a SOT-223 SMD Package

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