EMH7023

ESMT/EMP EMH7023 500mA, 500KHz PWM Synchronous Boost Converter with Output Isolated During Shutdown General Description The EMH7023 is a high efficiency, synchronous fixed frequency, current-mode step-up DC/DC converter. During shutdown mode, the output is completely isolated from the input without drawing any battery current. The fixed 500KHz switching frequency obtains maximum efficiency up to 96% and uses only a few external components. Applications      Mobile Phone Digital Still Cameras Portable applications MP3 Players GPS Receivers Features             Up to 96% efficiency Reference voltage: 0.5V Output to input disconnect at shutdown mode 500mA current delivery Switch current limit protection 500KHz fixed switching frequency Thermal shutdown protection 0.5V Low-battery comparator Min-start up voltage: 0.93V Low quiescent current: 50uA (Tpy.) Low shutdown current < 1uA E-MSOP 8 pins package With 180Ω loading, the minimum start-up voltage can be as low as 0.93V, provided by a one or two-cell alkaline or one-cell Li-Lon battery. The features of EMH7023 include current limit, low battery comparator, open-drain power good output, short circuit, and thermal shutdown protection. The EMH7023 is also available in E-MSOP-8L package. Typical Application Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Dec. 2012 Revision: 1.0 1/14 ESMT/EMP Connection Diagrams Order information EMH7023 EMH7023-XXMG08NRR XX Output voltag...