TPL5031 Series
300-mA Output, High PSRR,
Low-Dropout Linear Regulator
Features
Description
Input Voltage Range: 1.5 V to 5.5 V
Output Voltage Range:
The TPL5031 series products are 300-mAhigh 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.
− 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
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.
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:
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.
− 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
Typical Application Schematic
Input
Output
VOUT
VIN
CIN
COUT
TPL5031
Off On
EN
GND
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