Liteon Semiconductor Corporation LSP3120
52KHZ 3A PWM Buck DC/DC Converter
FEATURES
Output voltage: 3.3V, 5.0V, 12V, and...
Liteon Semiconductor Corporation LSP3120
52KHZ 3A PWM Buck DC/DC Converter
FEATURES
Output
voltage: 3.3V, 5.0V, 12V, and adjustable output version Adjustable version output
voltage range:1.23V to 37V±4% 52KHz±15% fixed switching frequency
Voltage mode non-synchronous PWM control Thermal-shutdown and current-limit protection ON/OFF shutdown control input Operating
voltage can be up to 40V Output load current: 3A Low power standby mode Built-in switching transistor on chip TO220-5L,TO263-5L packages
GENERAL DESCRIPTION
The LSP3120 series are monolithic IC that design for a step-down DC/DC converter, and own the ability of driving a 3A load without additional transistor component. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. The LSP3120 series operates at a switching frequency of 52 KHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed ±4% tolerance on output
voltage under specified input
voltage and output load conditions, and ±15% on the oscillator frequency. Th...