Features

• Input Voltage Range: 1.5 V to 5.5 V

• Output Voltage Range:

– Fixed Output Voltage: 0.75 V to 3.6 V

– Adjustable Output Voltage: 0.75 V to 5 V

• ±1% Typical Output Accuracy Under Room

Temperature

• 300-mA Maximum Output Current

• Low Dropout Voltage: 250 mV Typically at 300 mA

• High PSRR:

– 70 dB at 1 kHz

– 54 dB at 1 MHz

• Good Transient Response

• Stable with a 4.7-μF or Larger Ceramic Output

Capacitor

• Inrush Current Control During Startup

• Thermal Shutdown and Over-Current Protection

• Temperature Range: −40°C to +125°C

• Package Options:

– SOT23-5

– DFN1×1-4

Applications

• Portable and Battery-Powered Equipment

• Mobile Phones and Tablets

• Digital Cameras and Audio Devices Power Supply

• Video Surveillance

• Wireless and IoT Modules

Description

The TPL5031 is a series of 300-mA high PSRR, low

noise, and low dropout linear regulators with high output

accuracy. The TPL5031 series supports both fixed output

voltage ranges from 0.75 V to 3.6 V and adjustable output

voltage ranges from 0.75 V to 5 V with an external resistor

divider. The TPL5031 is stable with a 4.7-μF or larger

ceramic output capacitor.

The TPL5031 series has a high PSRR with 70 dB at 1 kHz.

This feature makes the TPL5031 series very suitable for

power-ripple-sensitive applications with high noise from the

previous stage power supply, such as high-performance

analog devices, or high-definition imaging equipment. The

output shortage protection and thermal overload protection

circuits improve reliability under heavy load conditions.

The TPL5031 series provides SOT23-5 and DFN1×1-4

packages with a guaranteed operating junction

temperature range from −40°C to +125°C.