特点
Wide Input Voltage Range: 3V to 80V
Low Quiescent Current: 46μA
Low Dropout Voltage: 300mV
Output Current: 50mA
PWRGD Flag with Programmable Delay
No Protection Diodes Needed
Adjustable Output from 1.24V to 60V
1μA Quiescent Current in Shutdown
Stable with 1μF Output Capacitor
Stable with Ceramic, Tantalum, and Aluminum Capacitors
Reverse-Battery Protection
No Reverse Current Flow from Output to Input
Thermal Limiting
Thermally Enhanced 12-Lead MSOP and 10-Pin (3mm × 3mm) DFN Packages
典型应用
典型应用
描述
描述 The LT?3011 is a high voltage, micropower, low dropout linear regulator. The device is capable of supplying 50mA output current with a dropout voltage of 300mV. Designed for use in battery-powered high voltage systems, the low quiescent current (46μA operating and 1μA in shutdown) is well controlled in dropout, making the LT3011 an ideal choice. The LT3011 includes a PWRGD flag to indicate output regulation. The delay between regulated output level and flag indication is programmable with a single capacitor. The LT3011 also has the ability to operate with very small output capacitors; it is stable with only 1μF on the output. Small ceramic capacitors can be used without the addition of any series resistance (ESR) as is common with other regulators. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting, and reverse current protection. The LT3011 features an adjustable output with a 1.24V reference voltage. The device is available in the thermally enhanced 12-lead MSOP and the low profi le (0.75mm) 10-pin (3mm × 3mm) DFN package, both providing excellent thermal characteristics.