LT3048 Series Low Noise Bias Generator in 2mm × 2mm DFN FEATURESDESCRIPTION n Generates Low Noise Bias Voltage from Single The LT®3048 series generate low noise, low ripple bias Cell Li-Ion Battery supplies from input voltages of 2.7V to 4.8V. n Output Current: Up to 40mA The LT3048 includes a boost regulator and a LDO linear n Low Output Ripple and Noise: <500µVP-P regulator. The boost regulator provides power to the n Boost Regulator linear regulator. n 1MHz Operation (LT3048) n The boost regulator output voltage is regulated to 1.1V 2.2MHz Operation (LT3048-XX) n above the LDO output, optimizing LDO ripple rejection and Integrated Schottky Diode n transient response. Fixed frequency operation and current Low Dropout Linear Regulator n mode control allow the use of very small inductors and 1.235V Feedback Voltage (LT3048) n results in low, predictable output ripple. Low Noise: <120µVRMS (10Hz to 100kHz) n 0.1% Load Regulation The linear regulator in the LT3048 generates a program- n Fixed 3.3V, 5V, 12V, 15V and Adjustable Output Options mable output and the LT3048-XX generate fixed output n Short-Circuit and Thermal Protection voltages. High power supply ripple rejection combined n Load Disconnect in Shutdown with a low noise internal reference results in less than n Available in 2mm × 2mm DFN Package 500µVP-P output ripple and noise. The LT3048 is available in a 8-lead 2mm × 2mm DFN package. APPLICATIONS All registered trademarks and trademarks are the property of their respective owners. n Sensor Bias n Op Amp Supply TYPICAL APPLICATIONEfficiency 10µH 80 IN 2.7V TO 4.8V 4.7µF 70 SW BSTOUT 60 VIN LDOIN 1µF LT3048-15 50 OUT LDOOUT 15V 40 1nF 1µF OFF ON EN BYP VIN (V) IOUT (mA) LDOOUT = 15V GND 2.7 19 EFFICIENCY (%) 30 3.3 22 L = 10µH 3048 TA01a 3.6 24 20 DCR = 650mΩ VIN = 2.7V 10 VIN = 3.3V VIN = 3.6V 0 0 5 10 15 20 25 LOAD CURRENT (mA) 3048 TA01b Rev B For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions LT3048 LT3048-xx LT3048 Block Diagrams Operation Applications Information Package Description Revision History Related Parts
Купить LT3048EDC-15#TRMPBF на РадиоЛоцман.Цены — от 160 до 716 ₽
