AME5143

AME AME5143 General Description The AME5143 switching regulator is current-mode boost converters operating at fixed frequency of 1.4MHz. The use of MSOP-8/PP package, made possible by the minimal power loss of the internal 1.8A switch, and use of small inductor and capacitors result in the industry's highest power density. The 30V internal switch makes these solutions perfect for boosting to voltages up to 30V. These parts have a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life. Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies and reduces component count. 1.4MHz Boost Converter With 30V Internal FET Switch Typical Application V IN 5V L1 10µH C3 10µF D1 VOUT 6V C1 4.7µF IN GND FB SW L2 10µH R1 59K CF 820pF EN AME5143 SW CS CS Rcs Cs C2 22µ F R2 15K Figure 1. 5V to 6V Boost Converter L1 4.7µH Features 30V DMOS FET Switch 1.4MHz Switching Frequency Low RDSON DMOS FET Switch Current Up to 1.8A (CS Connects to GND) Wide Input Voltage Range (2.7V-5.5V) Low Shutdown Current (