LA8522A

LA8522A 300KHz, 2A/23V Step-Down DC-DC Converter General Description LA8522A is a voltage mode, step-down DC-DC converter that is designed to meet 2A output current, and utilizes PWM control scheme that switches with 300KHz fixed frequency. The input voltage range of LA8522A is from 3.6V to 23V, and available in adjustable output voltage from 0.8V to VIN. The supply current is only 3mA during operation and under 1uA in shutdown. This device provides an enable function that can be controlled by external logic signal. It also provides excellent regulation during line or load transient. Other features of current limit, thermal shutdown protection, and short circuit protection are also included. Due to the low RDS(ON) of the internal power MOSFET, this device provides high efficiency step-down applications. It can also operate with a maximum duty cycle of 100% for use in low drop-out conditions. The package is available in standard SOP-8. Features l l l l l l l l l l l l l l l Adjustable Output Voltage from 0.8V to VIN 3.6V to 23V Input Voltage Range Continuous 2A Output Capability 300KHz Oscillation Frequency 0.8V Reference Voltage 1uA Low Shutdown Current 3mA Low Supply Current 100% Duty Cycle Built-in Low RDS(ON) Power MOSFET No External Compensation Required Support Low ESR Output Ceramic Capacitors Adjustable Current Limit Short Circuit and Thermal Protection SOP-8 Package Meet RoHS Standard Applications l l l l Broadband Communication Device LCD TV / Monitor Storage De...