LP6343

Preliminary Datasheet LP6343 1.5MHz, 3A Step-down Converter With Soft-Start General Description The LP6343 contains a independent 1.5MHz constant frequency, current mode, PWM step-down converters. The converter integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. The LP6343 is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. The converter can supply 3000mA of load current from a 2.5V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The LP6343 can also run at 100% duty cycle for low dropout applications. The LP6343 is available in a 10-lead 3mm*3mm TDFN-10 and EMSOP-10 package and is rated over the -40°C to 85°C temperature range. Order Information LP6343□ □ □ □ F: Pb-Free Package Type QV: TDFN-10 MS: MSOP-10(E) Output type A: Adjustable Typical Application Circuit Features — Input Voltage Range: 2.5V to 5.5V — Output Voltage Range: 0.6V to VIN — 3000mA Load Current on Channel — Up to 95% Efficiency — 100% Duty Cycle in Dropout — < 1 u A Quiescent Current — 1.5MHz Switching Frequency — Soft star Function — Short Circuit Protection — Current Mode Operation — Thermal Fault Protection — 3 m m × 3 m m TDFN-10 or MSOP-10 Package — RoHS Compliant and 100% Lead (Pb)-Free Applications — Portable Media Players — Cellular and Smart mobile phone — PDA/DSC — GPS Applications Marking Information Please see website. www.lowpowersemi.com VIN_5V 22uF AGND P...