LT3027 Dual 100mA, Low Dropout, Low Noise, Micropower Regulator with Independent Inputs FEATURES DESCRIPTIO Low Noise: 20V (10Hz to 100kHz) RMS The LT 3027 is a dual, micropower, low noise, low drop- Low Quiescent Current: 25A/Channel out regulator with independent inputs. With an external Independent Inputs 0.01F bypass capacitor, output noise is a low 20V RMS Wide Input Voltage Range: 1.8V to 20V over a 10Hz to 100kHz bandwidth. Designed for use in Output Current: 100mA/Channel battery-powered systems, the low 25A quiescent current Very Low Shutdown Current: <0.1A per channel makes it an ideal choice. In shutdown, quies- Low Dropout Voltage: 300mV at 100mA cent current drops to less than 0.1A. Shutdown control Adjustable Output from 1.22V to 20V is independent for each channel, allowing for flexibility in Stable with 1F Output Capacitor power management. The device is capable of operating Stable with Aluminum, Tantalum or over an input voltage from 1.8V to 20V, and can supply Ceramic Capacitors 100mA of output current from each channel with a drop- Reverse Battery Protected out voltage of 300mV. Quiescent current is well controlled No Protection Diodes Needed in dropout. Overcurrent and Overtemperature Protected The LT3027 regulator is stable with output capacitors as Tracking/Sequencing Capability low as 1F. Small ceramic capacitors can be used without Thermally Enhanced 10-Lead MSOP and DFN the series resistance required by other regulators. Packages Internal protection circuitry includes reverse battery pro- U tection, current limiting and thermal limiting protection. APPLICATIO S The device is available as an adjustable device with a Cellular Phones 1.22V reference voltage. The LT3027 regulator is available Pagers in the thermally enhanced 10-lead MSOP and low profile Battery-Powered Systems (0.75mm) 3mm 3mm DFN packages. Frequency Synthesizers , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Wireless Modems Protected by U.S. Patents, including 6118263, 6144250. Tracking/Sequencing Power Supplies TYPICAL APPLICATIO 3.3V/2.5V Low Noise Regulators 10Hz to 100kHz Output Noise 3.3V AT 100mA IN1 OUT1 V 20V NOISE RMS IN1 3.7V TO 1F SHDN1 0.01F 10F 422k 20V BYP1 ADJ1 249k V OUT LT3027 20V RMS 100V/DIV 2.5V AT 100mA IN2 OUT2 V 20V NOISE IN2 RMS 2.9V TO 1F SHDN2 0.01F 10F 261k 20V BYP2 ADJ2 3027 TA01b GND 249k 3027 TA01 3027fa 1 U ULT3027 (Note 1) ABSOLUTE AXI U RATI GS IN1, IN2 Pin Voltage .............................................. 20V Operating Junction Temperature Range OUT1, OUT2 Pin Voltage ....................................... 20V (Note 2) ............................................ 40C to 125C Input to Output Differential Voltage ....................... 20V Storage Temperature Range ADJ1, ADJ2 Pin Voltage ......................................... 7V DD Package ...................................... 65C to 125C BYP1, BYP2 Pin Voltage ....................................... 0.6V MSE Package ................................... 65C to 150C SHDN1, SHDN2 Pin Voltage ................................. 20V Lead Temperature (Soldering, 10 sec).................. 300C Output Short-Circut Duration.......................... Indefinite UUW PACKAGE/ORDER I FOR ATIO ORDER PART ORDER PART TOP VIEW NUMBER NUMBER TOP VIEW BYP2 1 10 OUT2 BYP2 1 10 OUT2 LT3027EDD LT3027EMSE ADJ2 2 9 IN2 ADJ2 2 9 IN2 11 SHDN2 3 8 IN1 11 LT3027IDD LT3027IMSE SHDN2 3 8 IN1 ADJ1 4 7 SHDN1 ADJ1 4 7 SHDN1 BYP1 5 6 OUT1 BYP1 5 6 OUT1 MSE PACKAGE DD PART MSE PART 10-LEAD PLASTIC MSOP MARKING MARKING EXPOSED PAD (PIN 11) IS GND DD PACKAGE MUST BE SOLDERED TO PCB 10-LEAD (3mm 3mm) PLASTIC DFN EXPOSED PAD (PIN 11) IS GND T = 150C, = 40C/ W, = 10C/ W LBKM LTBKK JMAX JA JC MUST BE SOLDERED TO PCB LBMC LTBMD T = 125C, = 43C/ W, = 3C/ W JMAX JA JC Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: