1A, Microcap, Low-Dropout, Linear Regulator

The MAX8869 low-dropout linear regulator operates from a +2.7V to +5.5V input and delivers a guaranteed 1A load current with a low 200mV dropout. The high-accuracy (±1%) output voltage is preset at +5V, +3.3V, +2.5V, +1.8V, or +1.0V or is adjustable from +0.8V to +5V with an external resistor-divider.

The MAX8869 uses Microcap® technology and requires only a small 1µF output capacitor for guaranteed stability. An internal PMOS pass transistor allows low 500µA supply current, making this regulator useful for networking and telecom hardware as well as battery-operated equipment. Other features include soft-start, low-power shutdown, short-circuit protection, and thermal shutdown protection.

The MAX8869 is available in a 1.5W, 16-pin TSSOP package, which is 30% smaller than a SOT223 and only 1.1mm high.

Applications

* Mobile Phone Base Stations * Network Equipment * Notebook Computers * Personal Computing * Telecom Hardware

* Guaranteed 1A Output Current

* Stable with COUT = 1µF

* Low 200mV Dropout at 1A

* ±1% Output Voltage Accuracy

* Preset at +5V, +3.3V, +2.5V, +1.8V, or +1.0V and Adjustable from +0.8V to +5.0V

* 54dB PSRR at 100kHz

* Adjustable Soft-Start

* 3ms Reset Output

* Foldback Output Current Limit

* Thermal Overload Protection

* High-Power 16-Pin TSSOP Package (1.5W)

* 30% Smaller than SOT223 (Only 1.1mm High)