MP2005 1-5.5V, 800mA ULDO Linear Regulator QFN-8

MP2005 1-5.5V, 800mA ULDO Linear Regulator QFN-8

The MP2005 is a micropower, ultra low-dropout LDO linear regulator.

Key Specifications

Features

• Wide 1.0V to 5.5V Input Voltage Range
• Stable with 1μF Ceramic Capacitor
• Ultra-Low Dropout (ULDO) voltage: 90mV@800mA
• 2% Accurate Output Voltage
• Adjustable Output Range of 0.5V to 4V
• High PSRR o 65dB at 1KHz o 48dB at 1MHz
• Better Than 0.0005%/mA Load Regulation
• Stable With Low-ESR Output Capacitors
• Low 100μA Ground Current
• Internal Thermal Protection

Typical Application Circuit

Applications

• Low Current Regulators
• Low Power Handheld Devices
• Battery Powered Systems
• Cellular Phones
• Portable Electronic Equipment
• Post Regulation for Switching Power Supplies

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