MP20045 1.5-5V, 1A Linear Regulator SOIC8E

MP20045 1.5-5V, 1A Linear Regulator SOIC8E

The MP20045 is a low-dropout linear regulator supplies up to 1A current with 140mV dropout voltage.

Key Specifications

Features

• Up to 1A Output Current
• Low 140mV Dropout at 1A
• Low 110μA Ground Current
• Fixed Output Versions Ranging from 1.5V to 5V and Adjustable Versions
• Open Drain Power-Good Status Output
• 13μVRMS Low Noise Output
• 56dB PSRR at 1kHz
• Current Limiting and Thermal Protection
• 3mm×3mm QFN8 and SOIC8E Packages

Typical Application Circuit

Applications

• Notebook Computers
• Cordless Telephones
• Cellular Phones
• Hand-Held Instruments

Design Notes

• Dissipation is (VIN − VOUT) × IOUT. Check it against the package thermal resistance at the real ambient temperature before committing to the full rated current.
• Some low-noise LDOs require a minimum output capacitor ESR for loop stability — read the stability section before substituting a ceramic part.
• Add a bypass capacitor on the reference pin where provided; it sets the output noise floor.
• PSRR falls as the input-to-output differential shrinks, so headroom matters at low VIN.

Common Questions