TPL5031 300-mA Output, High PSRR, Low-Dropout Linear Regulator

　　The TPL5031 series products are 300-mA high PSRR, low noise, and low dropout linear regulators with high output accuracy. The TPL5031 series products support 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 series products are stable with a 4.7 μF or larger ceramic output capacitor.

　　The TPL5031 series products have high PSRR with 70 dB at 1 kHz. This feature makes TPL5031 series products 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. Output shortage protection and thermal overload protection circuits improve the reliability under heavy load conditions.

　　The TPL5031 series products provide SOT23-5 and 1×1 DFN-4 packages with a guaranteed operating junction temperature range from −40°C to +125°C.

　　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

　　− 1×1 DFN-4

　　Applications

　　 Portable and Battery-Powered Equipment

　　 Mobile Phones and Tablets

　　 Digital Cameras and Audio Devices Power

　　Supply

　　 Video Surveillance

　　 Wireless and IoT modules