Datasheet Linear Technology LTC1872BES6#PBF — Datenblatt

LTC1872B
Constant Frequency
Current Mode Step-Up
DC/DC Controller in ThinSOT
Features Description Burst Modeв„ў Operation Disabled for Lower Output
Ripple at Light Loads
nn High Efficiency: Over 90%
nn High Output Currents Easily Achieved
nn Wide V Range: 2.5V to 9.8V
IN
nn V
OUT Limited Only by External Components
nn Constant Frequency 550kHz Operation
nn Current Mode Operation for Excellent Line and Load Transient Response
nn Shutdown Mode Draws Only 8ВµA Supply Current
nn Low Profile (1mm) ThinSOTв„ў Package The LTCВ®1872B is a constant frequency current mode
step-up DC/DC controller providing excellent AC and DC
load and line regulation. The device incorporates an accurate undervoltage lockout feature that shuts down the
LTC1872B when the input voltage falls below 2.0V. nn Applications
Optical Communications
Lithium-Ion-Powered Applications
nn Cellular Telephones
nn Wireless Devices …