High Current Switching Regulator Ic Simplifies Supply Design

Oc .„ 19E8 111 HIGH CURRENT SWITCHING REGULATOR IC SIMPLIFIES Containing a complete 2.5A switching regulator on a single chip, a power IC simplifies the design of many power supply schemes and reduces cost. While designers are attracted by the high efficiency of switching regulators, they are often deterred by the com- plexity of circuits based on con- trollers such as the SG3524 and discrete power transistors. By integrating on a single chip a complete switching regulator capable of delivering 2.5A at 5V to 40V, the SGS L4960 High Cur- rent Switching Regulator IC of- fers all the advantages of a switching regulator yet is little more complex to use than a lin- ear regulator. A 2.5A/5V regu- lator can be built with one L4960 and just eight compo- nents (Fig. 1) and higher output voltages are obtained by ad- ding two resistors. Moreover, the device includes current limiting and thermal protection circuits, eliminating the need to add extra circuitry. A further advantage is that t...