Ultra-Low-Noise, High PSRR, Low-Dropout, 120mA Linear Regulators

The MAX8510/MAX8511/MAX8512 ultra-low-noise, low-dropout (LDO) linear regulators are designed to deliver up to 120mA continuous output current. These regulators achieve a low 120mV dropout for 120mA load current. The MAX8510 uses an advanced architecture to achieve ultra-low output voltage noise of 11µVRMS and PSRR of 54dB at 100kHz.

The MAX8511 does not require a bypass capacitor, hence achieving the smallest PC board area. The MAX8512's output voltage can be adjusted with an external divider.

The MAX8510/MAX8511 are preset to a variety of voltages in the 1.5V to 4.5V range. Designed with a P-channel MOSFET series pass transistor, the MAX8510/MAX8511/MAX8512 maintain very low ground current (40µA).

The regulators are designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8510 requires only 1µF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1µA.

Package options include a 5-pin SC70 and a tiny 2mm x 2mm x 0.8mm TDFN package.

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

* Space-Saving SC70 and TDFN (2mm x 2mm) Packages

* 11µVRMS Output Noise at 100Hz to 100kHz Bandwidth (MAX8510)

* 78dB PSRR at 1kHz (MAX8510)

* 120mV Dropout at 120mA Load

* Stable with 1µF Ceramic Capacitor for Any Load

* Guaranteed 120mA Output

* Only Need Input and Output Capacitors (MAX8511)

* Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3V, 3.3V, 4.5V (MAX8510/MAX8511) and Adjustable (MAX8512)

* Low 40µA Ground Current

* Excellent Load/Line Transient

* Overcurrent and Thermal Protection