LT1761ES5-2.8#TR Description

The micropower, low noise, and low dropout regulators in the LT?1761 series. Over a bandwidth of 10Hz to 100kHz, output noise decreases to 20VRMS with an external 0.01F bypass capacitor. Because of the low 20-A quiescent current, they are perfect for use in battery-powered systems. Quiescent current falls to less than 0.1 A during shutdown. The devices can operate with input voltages ranging from 1.8V to 20V, and they have an output current capability of 100mA with a dropout voltage of 300mV. Quiescent current is well controlled and does not increase as a result of dropout as it does with many other regulators. With output capacitors as low as 1 F, the LT1761 regulators are stable. Without the necessary series resistance required by other regulators, small ceramic capacitors can be employed.

LT1761ES5-2.8#TR Features

• Low Noise: 20μVRMS (10Hz to 100kHz)

• Low Quiescent Current: 20μA

• Wide Input Voltage Range: 1.8V to 20V

• Output Current: 100mA

• Very Low Shutdown Current: <0.1μA

• Low Dropout Voltage: 300mV at 100mA

• Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V, 5V

• Adjustable Output from 1.22V to 20V

• Stable with 1μF Output Capacitor

• Stable with Aluminum, Tantalum or Ceramic Capacitors

• Reverse-Battery Protected

• No Reverse Current

• No Protection Diodes Needed

• Overcurrent and Overtemperature Protected

• Available in Tiny 5-Lead TSOT-23 Package

LT1761ES5-2.8#TR Applications

• Cellular Phones

• Pagers

• Battery-Powered Systems

• Frequency Synthesizers

• Wireless Modems