LP2178AL Datasheet | LANDP

Machine Translated by Google Non-isolated step-down switching power supply constant voltage control driver Overview Features LP2178AL is a high-efficiency and high-precision non-isolated step-down switching power supply constant voltage control driver chip. It is suitable for non-isolated Buck and Buckboost topologies with a full range of input voltages from 85VAC to 265VAC, and is especially suitable for driving power supplies such as small appliances and white appliances. LP2178AL integrates high-voltage power tubes and adopts constant voltage control mode. The system can work in CCM and DCM modes. It adopts a unique PFM control method to improve audio characteristics. Built-in unique peak current control, no CS resistor required; built-in startup circuit, no startup resistor required. Simple peripheral application and high reliability. LP2178AL has multiple protection functions, including VCC clamping/undervoltage protection, output short circuit protection, inductor overcurrent protection and overtemperature protection. ÿ Integrated 750V power tube ÿ Constant voltage control, fixed 5V output voltage ÿ Built-in unique peak current control, no CS resistor required ÿ Built-in startup circuit, no startup resistor required ÿ Excellent dynamic performance ÿ Excellent EMI characteristics ÿ Excellent output load regulation rate ÿ Low standby power consumption <75m W ÿ Excellent audio characteristics in the full load range ÿ Multiple protection functions LP2178AL adopts SOP8L Typical Applications application ÿ Open power supplies such as small appliances and white appliances Ordering Information Order model - XXXX: batch number Figure 1 LP2178AL Buck Typical Application Encapsulation SOP8L Packaging Taping 4000 pcs/reel seal LP2178 ALXXXX LP2178AL_CN_DS_Rev.1.0 Page 1 / 6 .chip-hope. SHENZHEN Chip Hope Micro-electronics LTD Confidential- Customer Use Only Machine Translated by Google Pin package Non-isolated step-down...