FEATURES
s s s s s s s DESCRIPTIO 1A, 0.5Ω, 30V Internal Switch Operates with VIN as Low as 1.5V 600kHz Fixed Frequency Operation Low-Battery Detector Stays Active in Shutdown Low VCESAT Switch: 410mV at 800mA Pin-for-Pin Compatible with the LT1317B Small 8-Lead MSOP and SO Packages U APPLICATIO S s s s s s LCD Bias Supplies GPS Receivers Battery Backup Portable Electronic Equipment Diagnostic Medical Instrumentation The LT ®1949 is a fixed frequency step-up DC/DC converter with a 1A, 0.5Ω internal switch. Capable of generating 10V at 175mA from a 3.3V input, Constant frequency 600kHz operation results in a low noise output that is easy to filter and the 30V switch rating allows output voltage up to 28V using a single inductor. An external compensation pin gives the user flexibility in optimizing loop compensation, allowing small low ESR ceramic capacitors to be used at the output. Quiescent current in shutdown is 25µA, while operating current is 4.5mA. , LTC and LT are registered trademarks of Linear Technology Corporation.
Linear Technology
