UNISEM US1175
The US1175 product is a 7.5A regulator with extremely low dropout voltage using a proprietary Bipolar process that achieves comparable equivalent on resistance to that of discrete MOSFETs. This product is specifically designed to provide well regulated supply for applications requiring very low dropout such as 2.8V from 3.3V ATX power supplies where the same efficiency as the switcher can be achieved without the cost and complexity associated with switching regulators.FEATURES
0.5V Dropout at 7.5A (Equivalent of 67mΩ) Fast Transient Response 1% Voltage Reference Initial Accuracy Built-in Thermal ShutdownDESCRIPTION
One such application is the new graphic chip sets that requires 2.7V supply such as the Intel I740 chip set.APPLICATIONS
3.3V to 2.7V Intel I740 chip set. TYPICAL APPLICATION 3.3V C1 Vin Vctrl 5 4 3 R1 US1175 Vout Adj Vsense 2.7V C3 R2 2 1 1175app1-1.0 5V C2 Typical application of US1175 . PACKAGE ORDER INFORMATION Tj (°C) 0 TO 125 5 PIN PLASTIC 5 PIN PLASTIC TO263 (M) POWER FLEX (P) US1175CM US1175CP 8 PIN PLASTIC SOIC (S) US1175CS Rev. 1.2 11/29/99 2-1 US1175ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) ........................................................... 6V Control Input Voltage (Vctrl) .................................................. 14V Power Dissipation............................................. Internally Limited Storage Temperature Range ................................... -65°C TO 150°C Operating Junction Temperature Range .....................