Description DC-DC 2.7-20V to 4.5-20V Low Voltage Adjustable Step Up Converter Boost Constant Current Synchronous Rectifier Power Module 30W Product Features: 1. Wide range of input and output voltage, input and output up to 20 volts, the use of a wider range, far better than the TPS61088 2. Especially suitable for 3.7 volt lithium batteries and other low-voltage boost applications, a wide range of applications 3. High efficiency, high power, and the classic chip TPS61088 power performance as 4. There is a real output short circuit protection, output random short circuit does not burn 5. Constant voltage and constant current function, can achieve boost charging, such as 3.7 volt lithium battery boost charging 12 volt battery Product Parameters: Input voltage: 2.7~20V Output voltage: 4.5~20V Input current: max. 10A Output current: max. 4A Output power: 4.2 volt input, the limit of 30 watts (3.7 volt lithium battery can be 12 volts 2 amps) Switching frequency: 150KHZ Package Includes 1 x Low Voltage Adjustable Step Up Converter