AN8038

Voltage Regulators AN8038, AN8038S AC-DC switching power supply control IC with RCC local resonance circuit for improved conformance with energy conservation laws s Overview The AN8038 and AN8038S are self-excited AC-DC switching power supply control IC that adopt RCC local resonance control. These ICs are designed to achieve high efficiency over a wide range of loads (light loads at the standby mode to heavy loads) for improved conformance with energy conservation laws, and support input levels used worldwide. They are particularly appropriate for use in AV and OA equipments. AN8038 Unit: mm 0.5±0.1 0.51 min. 3.8±0.25 (3.45) 1 8 7 9.4±0.3 2 3 4 6.3±0.3 5 3° to 15° 7.62±0.25 0.15–0.05 +0.1 DIP008-P-0300B s Features AN8038S 5.01±0.20 Supports improved conformance with energy conser8 5 vation laws by providing two operating modes. With external resistors, it is possible to set the operating point at which the modes change over according to the load power, as shown below. 1.Continuous (RCC) mode 1 4 High efficiency achieved with local resonance operation (zero cross detection). 2.Discontinuous mode (standby) mode Reduced switching loss and standby power due to re(0.60) 1.27 0.40 duced frequency 0.10 Seating plane Input voltage correction function. This function corrects SOP008-P-0225C the maximum on-period in a manner inversely proportional to the input voltage. Built-in overvoltage protection function (detects at VCC pin) Pulse-by-pulse overcurrent protecti...