1 High-Voltage Low-Power Synchronous BOOST Controller Features High Efficiency >90% Synchronous N-type MOSFET Rectifier Wide Input Voltage Range:3V~20V 1.5% Output Voltage Accuracy High Side Current Sampling Integrated Soft Start 750KHz Switch Frequency Shut Down Current <8µA PWM Peak Current Mode Control Empty Load automatically turn into Burst Mode Logic Control Enable Pin Cycle-by-cycle Current Limit Temperature range: -40℃~125℃ TSSOP-24 or QFN-24 Package Applications Mobile Phone Industrial Power Supply Communications Hardware Description YC5188 is a constant frequency PWM current-mode control, high efficiency synchronous boost controller with N-type power MOSFET driver. Synchronous rectification can improve efficiency, reduce power consumption and reduce cooling requirements, so YC5188 can be applied in high-power environments. Input voltage 3V to 20V supports a wide range of the power supply system and battery applications. Automatically switch the operation mode in accordance with the change of the load. The YC5188 integrates peak current limit and output over voltage protection. The chip current falls below 8µA when EN logic control is low. YC5188 2 Connection Diagrams YC5188 MSOP-10 Package LX10HG9BOOT8FB4VSS5CS1EN3VDD2LDO7LG6 Pin Name I/O Description 1 SEN I High side input current sense resistor negative input 2 VDD - Power input& High side input current sense resistor positive input 3 EN I Enable input 4 FB I Output voltage feedback input 5 VSS - Analog ground 6 LG O Low side synchronous power MOSFET driver output 7 LDO O 5.4V linear regulator output 8 BOOT - High side power MOSFET driver power supply positive input 9 LX - High side pow...
