Description

The IMP3211 is a three-terminal voltage regulator from the IMP37 series. It is a Low Dropout (LDO) voltage regulator that offers guaranteed low dropout voltages at currents up to 0.8A. With a maximum dropout voltage of 0.95V at 0.8A, it provides superior performance compared to "1117" type LDO regulators, with a 20% lower dropout voltage. The IMP3211 is available in a space-saving SOT-223 surface mount package and is also pin compatible with the "1117" regulators.

Specifications and Features

The IMP3211 features:

• Low Dropout Voltage:
  • 0.8V maximum at 100mA
  • 0.95V maximum at 800mA
  • 20% lower dropout voltage than "1117" LDO regulators
• Guaranteed Low Dropout Voltage at Multiple Current Levels
• 1% Trimmed 2.5V, 3.0V and 3.3V Outputs
• Reduced Quiescent Current: 75µA Maximum
• Short Circuit and Thermal Protection
• Space Saving SOT-223 Surface Mount Package
• "1117" Pin Compatible

Application Scenarios

The IMP3211 can be used in various applications including:

• High-efficiency linear power supplies
• Post regulator for switching supplies
• 5V to 3.3V linear regulators
• USB hubs
• Battery chargers
• Routers, ISDN/DSL modems

Comparison

- Guaranteed low dropout voltages

- 20% lower dropout voltage compared to "1117" LDO regulators

- Multiple current level options

- Short circuit and thermal protection features

- Space-saving SOT-223 surface mount package

- "1117" pin compatibility

- None identified