1High efficiency.DC-DC converter 85-90%, LDO 71-78%, overall efficiency 60-70%. 2Over temperature shutdown, undervoltage protection, BS voltage protection and short circuit protection. 3Suitable for Smart Home/Home Automation, Distributed Power System, Preregulator for Linear Regulators, FM Radio, Battery-Powered Devices, Handheld Electronics, Audio Amplifiers. 4The wireless module is Nrf24l01 CC1101 CC2500 CC2530. 5The maximum output current is 700mA,and the short time maximum output current is 1000mA.Features:High efficiency.DC-DC converter 85-90%, LDO 71-78%, overall efficiency 60-70%. Over temperature shutdown, undervoltage protection, BS voltage protection and short circuit protection.Suitable for Smart Home/Home Automation, Distributed Power System, Preregulator for Linear Regulators, FM Radio, Battery-Powered Devices, Handheld Electronics, Audio Amplifiers. The wireless module is Nrf24l01 CC1101 CC2500 CC2530. The maximum output current is 700mA,and the short time maximum output current is 1000mA. Specification:Type(Optional):With Pin/Without Pin3.3V: Input Voltage 6-40V, Output 3.3VDC-DC Converter 6V to 4.6V, LDO Regulator to 4.6V to 3.3V.5V: Input Voltage 8-40V, Output 5VDC-DC Converter 8-40V to 6.4V, LDO Regulator 6.4V to 5V.Maximum Output Current 700mA, Short-Term Maximum Output Current 1000mAWorking Frequency:550KHzEfficiency:DC-DC Converter 85-90%, LDO 71-78%, Overall Efficiency 60-70%Quiescent Current: About 1.5mAFunction:Over Temperature Shutdown, Undervoltage Protection, BS Voltage Protection And Short Circuit Protection.Size:25 X 16 X 5.8mm / 0.98 X 0.63 X 0.23in Weight: 4g/0.14ozDC-DC Converter :High Efficiency, High RippleLDO Regulator : Low Efficiency, Low RippleDD38LOSA 2 In 1 Converter : High Efficiency,Low RippleApplications:MCU ARM CPU FPGA/CPLD12V 9V 6V TO 5V 3.3V lithium battery-powered systemsesp8266 HC-12 SPP-C WIFI Bluetooth ModulePTC CCTV IP CameraWireless Module:Nrf24l01 CC1101 CC2500 CC2530Smart home / home automationDistributed Power SystemsPre-Regulator for Linear RegulatorsFM radioBattery powered equipmentHandheld electronic deviceAudio amplifierPackage List:1 x ConverterNote:1. The input voltage cannot be greater than the maximum input range.