L5201数据手册UTC中文资料规格书

描述 Description

The UTC L5201-xx series are low noise, constant frequency charge pump DC/DC converters and designed to increase efficiency in white LED application. The operating voltage range is 2.7V ~ VOUTinput with up to 100mA of output current. Low external parts counts(one flying capacitor and two small bypass capacitors at VIN and VOUT) make the UTC L5201-xx series ideally suited for small, battery-powered applications. A charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The UTC L5201-xx series have thermal shutdown capability to escape the device damaged from a continuous short-circuit. With built-in soft-start circuitry to prevents excessive current flow at VIN during start-up. High switching frequency enables the use of small ceramic capacitors. A low-current shutdown feature disconnects the load from VIN and reduces quiescent current to

特性 Features

• Low Noise Constant Frequency Operation
• Output Current:
• 90mA@3.0V• 100mA@3.0V• 1MHz Switching Frequency
• 4.5V/5.0V Fixed Output Voltage
• VIN Range: 2.7V ~ VOUT
• Automatic Soft-Start.
• No Inductors
• Less than 1µA of Shutdown Current