大电流升压恒压IC方案.pdf

400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Features General Description n Wide 3.6V to 32V Input Voltage Range The XL6008 regulator is a wide input range, n Positive or Negative Output Voltage current mode, DC/DC converter which is Programming with a Single Feedback Pin capable of generating either positive or n Current Mode Control Provides Excellent negative output voltages. It can be configured Transient Response as either a boost, flyback, SEPIC or inverting n 1.25V reference adjustable version converter. The XL6008 built in N-channel n Fixed 400KHz Switching Frequency power MOSFET and fixed frequency n Maximum 3A Switching Current oscillator, current-mode architecture results in n SW PIN Built in Over Voltage Protection stable operation over a wide range of supply n Excellent line and load regulation and output voltages. n EN PIN TTL shutdown capability The XL6008 regulator is special design for n Internal Optimize Power MOSFET portable electronic equipment. n High efficiency up to 92% n Built in Frequency Compensation n Built in Soft-Start Function n Built in Thermal Shutdown Function n Built in Current Limit Function n Available in TO252-5L package Applications n Automotive and Industrial Boost / Buck-Boost / Inverting Converters n Portable Electronic Equipment Figure1. Package Type of XL6008 Rev 1.2 1 400KHz 60V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Pin Configurations Figure2. Pin Configuration o