LTC3543 PDF File ( Datasheet )

FEATURES - - - LTC3543 600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum DESCRIPTIO The LTC®3543 is a high ef ciency monolithic synchronous current mode buck regulator. The switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors. In PLL mode, the LTC3543 can acquire frequencies between 1MH- and 3MHz. Also, the LTC3543 has spread spectrum capability providing a lower noise regulated output, as well as