User`s manual

BD2-3880/3890 User’s Manual
10
5. POWER SUPPLY
5.1 Specifications
VDD : 5V ±5% Approx. 130 mA
VP : 4.2V ~ 8.5V Average: 1.5A (Peak: Approx. 4A) when 7.2V
Operating votage is 7.2V (Max)
8.5V is a voltage only right after charging. 8.5V cannot be used for
normal voltage.
5.2 Precautions
(1) Design the product to supply power to VDD before VP when power is supplied to this
control board.
(2) Design the product to turn off the power for VDD after VP when power is turned off.
(3) Make sure to turn off the power in case of connecting/disconnecting connectors.
(4) Make sure to use VDD and VP following their specifications.
(5) Make sure to use this control board connecting all of terminals between VP and P-GND.