The dropout voltage is only 0.75V (Typ.) at 5A, directly dependent on the output current conditions. Realized in BCDII technology, it has on board a charge pump to properly drive an N-channel power mos Transistor with 150m of RDSON. It operates from a 4.5V minimum supply, with a very low quiescent current irrespective of the load; a minimum of 22F output capacitor is required for stability. The on-chip trimming techniques improve the precision of the available output voltages to 2%. Ancillary functions like power good, inhibit with low power consumption, programmable output voltage and current limiting make the flexible heptawatt version usable in applications where power management, stand-by, features, post regulation and adjustable current generators for battery chargers are important.