LV5044V

Ordering number : ENA0534 LV5044V Bi-CMOS IC 2ch step-down circuit DC-DC Converter Controller http://onsemi.com Overview The LV5044V is a high efficiency, 2-channel, step-down, DC-DC converter controller IC adopting a synchronous rectifying system. Incorporating numerous functions on a single chip with easy external setting, it can be used for a wide variety of applications. The device is optimal for use in multi-output power supply systems which are used in LCD-TVs, DVD recorders, game machines, high-end office products, etc. Features Provides dual step-down DC-DC converter controller circuits integrated on the same chip. Provides an input UVLO circuit, an overcurrent detection function, an overtemperature detection function, soft start/soft stop functions, and a startup delay circuit. Output voltage monitoring functions (power good as well as OVP and UVP with timer latch functions) 180° interleaved operation between phase 1 and phase 2 (supports multiphase drive in 2-phase parallel operation mode). Supports synchronous operation between different devices (supports master/slave operation when multiple devices are used). Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Supply voltage Peak output current Allowable power dissipation VIN IOUT Pd max *1 18 ±1.0 1 Operating temperature Topr -20 to +85 Storage temperature Tstg -55 to +150 Allowable pin voltage *2 1 HDRV1,2 18 CBOOT1,2 2 HDRV1,2 ,CBOOT1,2 6.5...