MAX8940

PRODUCTION

MAX8940

Low-Noise, High PSRR, Low-Dropout, 120mA Linear Regulator

Space-Saving, Low-Noise, High PSRR, Low-Dropout 120mA LDO

PRODUCTION

MAX8940: Typical Operating Circuit slide

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Part Models 2

1ku List Price

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Features

Space-Saving SC70
25µV_RMS Output Noise at 100Hz to 100kHz Bandwidth
65dB PSRR at 10kHz
120mV Dropout at 120mA Load
Stable with 1µF Ceramic Capacitor for Any Load
Guaranteed 120mA Output
Output Voltages: 2.8V or 3V
Low 40µA Ground Current
Excellent Load/Line Transient
Overcurrent and Thermal Protection

Additional Details

The MAX8940 low-noise, low-dropout (LDO) linear regulator is designed to deliver up to 120mA continuous output current. This regulator achieves a low 120mV dropout for 120mA load current. The MAX8940 uses an advanced architecture to achieve low output voltage noise of 25µV_RMS and PSRR of 45dB at 100kHz.

The MAX8940 is preset to either 2.8V or 3.0V. Designed with a p-channel MOSFET series pass transistor, the MAX8940 maintain very low ground current (40µA).

The regulator is designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8940 requires only 1µF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1µA.

Package is a 5-pin SC70.

Applications

Base Stations
Bluetooth Portable Radios and Accessories
Cellular and Cordless Phones
Digital Cameras
PDA and Palmtop Computers
Personal Stereos
Portable and Battery-Powered Equipment
Wireless LANs