DROK Mini DC Power Converter Step Up Module 3V to 5V 1A USB Charge for MP3/MP4/Phone
Feature:Module Properties: non-isolated step-up moduleInput voltage: DC 1-5VIt is better that the input voltage greater than 3V. if the input voltage too low, the module would generate the noises.Output voltage: DC 5.1-5 .2 VOutput Current: Rated 1A-1.5A (single lithium input), the maximum 1.5A (single lithium input)Efficiency: Up to 96% (the higher the input voltage, the higher the efficiency)Switching frequency: 500KHzOutput ripple: 30mV (MAX) 20M bandwidth (input 4V output 5.1V 1A)Voltage indication: LED lights with load (input voltage less than 2.7V LED indicator off)Operating Temperature: Industrial (-40c to +85c)Full load temperature rise: 30cLoad regulation:  1%Voltage regulation:  0.5%Dynamic response speed: 5% 200uSShort circuit protection: None (Please use the lithium battery with protection.)Input Reverse Polarity Protection: NoneConnection: WeldingInput: IN + Postive, IN-NegativeOutput: USB OutputUndervoltage instructions: when voltage below 2.7V, the load LED will not light upApplications:DIY a mobile power supply,  only need one battery, you can output 5V voltage for your phone, MP3, MP4, PSP charger, very easy.In order to power your electronic devices when your device needs 5V power supply, when you only have lithium battery, this module can be directly step-up to 5V, solve your problems.Package Includes:1x DC-DC Converter