1.1.        Output: 5V/3A and 6V/3A switchable

1.2.        Input: 5.5V-23V (2-5s lithium battery pack, 5-15cells NiMh / NiCd battery pack)

1.3.        Size: 21.5mm*15.5mm*13.5mm (length*width*high)

1.4.        Weight: 5.5g(input and output cables not included); 8.5g(cables included)

1.5     Ripple: <50mVp-p(@2A/12V)

2.         Features:

2.1.        The UBEC is an advanced switching regulator, provides over-current and over-heat protection function, and the witching frequency is 300KHz.The max efficiency of this chip is 92%

2.2.        The smallest size and the lightest weight.

2.3.        Compare linear BEC with switch-mode BEC: When using a lithium battery pack more than 3s, a switch-mode BEC has much higher efficiency than linear BEC.

2.3.1.       For a traditional linear BEC: For example，a 4s lithium battery pack has a typical voltage of 14.8V, in order to let BEC outputs 5V/1A, the current flow into BEC is at least 1A, so the power on BEC is 14.8V* 1A=14.8W. But the useful output power is only 5V*1A=5W, so the efficiency of BEC is 5W/14.8W=33.8%, the redundant power 14.8W-5W=9.8W changes to heat, which makes the BEC very hot.