LT3011 50mA, 3V to 80V Low Dropout Micropower Linear Regulator with PWRGD FEATURESDESCRIPTION n Wide Input Voltage Range: 3V to 80V The LT®3011 is a high voltage, micropower, low dropout n Low Quiescent Current: 46μA linear regulator. The device is capable of supplying 50mA of n Low Dropout Voltage: 300mV output current with a dropout voltage of 300mV. Designed n Output Current: 50mA for use in battery-powered high voltage systems, the low n PWRGD Flag with Programmable Delay quiescent current (46μA operating and 1μA in shutdown) n No Protection Diodes Needed is well controlled in dropout, making the LT3011 an ideal n Adjustable Output from 1.24V to 60V choice. n 1μA Quiescent Current in Shutdown The LT3011 includes a PWRGD fl ag to indicate output n Stable with 1μF Output Capacitor regulation. The delay between regulated output level and n Stable with Ceramic, Tantalum, and Aluminum fl ag indication is programmable with a single capacitor. Capacitors The LT3011 also has the ability to operate with very small n Reverse-Battery Protection output capacitors; it is stable with only 1μF on the output. n No Reverse Current Flow from Output to Input Small ceramic capacitors can be used without the addition n Thermal Limiting of any series resistance (ESR) as is common with other n Thermally Enhanced 12-Lead MSOP and regulators. Internal protection circuitry includes reverse- 10-Pin (3mm × 3mm) DFN Packages battery protection, current limiting, thermal limiting, and reverse current protection. APPLICATIONS The LT3011 features an adjustable output with a 1.24V n Low Current High Voltage Regulators reference voltage. The device is available in the thermally n Regulator for Battery-Powered Systems enhanced 12-lead MSOP and the low profi le (0.75mm) n Telecom Applications 10-pin (3mm × 3mm) DFN package, both providing excel- n Automotive Applications lent thermal characteristics. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATIONDropout Voltage5V Supply with Shutdown 350 VOUT 300 IN OUT 5V VIN 50mA LT3011 750k 250 3V TO 1μF 1.6M 1μF SHDN 80V ADJ PWRGD TAGE (mV) 200 249k GND CT POWER GOOD 150 1000pF 100 DROPOUT VOL VOUTPUT 3011 TA01 SHDN 50 <0.3V OFF >2.0V ON 0 0 10 20 30 40 50 OUTPUT CURRENT (mA) 3011 TA02 3011f 1
