Patent ID: 7436152

Claim:
A charge current control system, comprising: a pass transistor for delivering pre-charge and full-rate magnitude charge current to a load; a sense resistor coupled to said pass transistor; a first resistor coupled to said sense resistor; a second resistor coupled to said sense resistor; a control amplifier coupled to said sense resistor; a first controlled current source coupled to said control amplifier and associated with said pre-charge current; a second controlled current source coupled to said control amplifier and associated with said full rate magnitude charge current; and a charge control block coupled to said first controlled current source and said second controlled current source, wherein the magnitude of said pre-charge current is equal to the magnitude of current through said first resistor times the magnitude of the resistance of said first resistor divided by the magnitude of the resistance of said sense resistor and wherein the magnitude of said full-rate charge current is equal to the magnitude of current through said second resistor times the magnitude of the resistance of said second resistor divided by the magnitude of the resistance of said sense resistor.