MP8904 2.5-6.5V, 500mA Linear Regulator QFN8

MP8904 2.5-6.5V, 500mA Linear Regulator QFN8

The MP8904 is a low-current, low-dropout, linear regulator that operates on a single 2.5V- to-6.5V input supply.

Key Specifications

Features

• Power-Good Open Collector Output
• Operates from a 2.5V-to-6.5V Input
• Low 300mV Dropout at 500mA Output
• Stable with Very Small Ceramic Capacitors
• 2% Feedback Reference
• Adjustable Output Voltage from 0.5V to 5V
• Better than 0.001%/mA Load Regulation
• Stable with Low-ESR Output Capacitor
• Low 100μA Ground Current
• Internal Thermal Protection

Typical Application Circuit

Applications

• Low-Current Regulators
• Battery-Powered Systems

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