ZMDI ZSPM401xB High Efficiency Synchronous Buck Converters are DC/DC synchronous switching regulators with fully integrated power switches, internal compensation, and full fault protection. The switching frequency of 1MHz enables the use of small filter components, resulting in reduced board space and reduced BOM costs. These ZMDI devices come in 1A (ZSPM4011B), 2A (ZSPM4012B), and 3A (ZSPM4013B) rated continuous output current ratings. The ZSPM401xB family utilizes current mode feedback in normal regulation PWM mode. When the regulator is disabled (EN is low), the device draws less than 10uA quiescent current. The ZSPM401xB family integrates a wide range of protection circuitry, including: input supply under-voltage lockout, output voltage soft start, current limit, and thermal shutdown. ZSPM401xB devices include supervisory reporting through the PG (Power Good) open drain output to interface other components in the system.