DROK Mini USB DC-DC Step Up Converter 3V to 5V 2A Mobile Power Supply Board with Battery Indicator for Tablet PC iPad iPhone

Feature: Module properties: non-isolated step-up module (BOOST) Input voltage: 2.6-5.5V Input Current: 0-3A Output voltage: 5V Output current: 0-2A Operating temperature: -40°c to +85°c Working frequency: 1.2MHz Conversion efficiency: up to 93% Short circuit protection: Yes Over-temperature protection: Yes (Over-temperature automatic shutdown output) Input reverse polarity protection: No (please install diode at input port) Power indicator: 3.6V Red LED Light Identify resistance: Support Tablet PC, Phone, MP3 Installation: two 3mm screws Connection: V-IN input, USB output Dimensions: 20x20x6.8mm Package Include: 1x DC-DC Converter Features: * DC 2.6-5.5V to 5V 2A non-isolated step up (boost) module. * Max 2A output, up to 93% conversion efficiency. * With red green battery indicator, the red led lights up when it lower than 3.6V. * With over-current protection, over-temp protection to protect the circuit. * USB output interface, used for mobile phones, Ipad, MP3, PSP, etc. charging power supply DIY.