US 2008/0164855 A1 · Systems and methods for selectively changing current limit of a battery controller

Abstract

Systems and methods for selectively changing the current threshold of current limiting circuitry are provided. The current limit threshold of current limiting circuitry may be selectively changed based on a detected power source using a resistive network. The current limiting threshold may be selected by changing a resistance value of a resistive network electrically coupled to an input on the current limiting circuitry (e.g., battery controller) for programming the current limiting threshold. The resistance value received by the currently limiting circuitry at this input may set the current threshold and thus the maximum magnitude of current that may be provided to charge a battery or other energy storage device located in the electronic device (e.g., a mobile phone).

Claims26

Dependent claims

A system for selectively changing a current limit threshold, the system comprising:

power source detection circuitry operative to detect a power source selected from at least two power sources;
a resistive network operative to selectively provide one of at least two resistance values based on the detected power source;
and
current limiting circuitry electrically coupled to receive the resistance value from the resistive network, the current limiting circuitry operative to set the current limiting circuitry to one of at least two current limiting thresholds based on the resistance value.

1 more element

Dependencies are inferred from the claim text.

Systems and methods for selectively changing current limit of a battery controller

Life of this patent

Systems and methods for selectively changing current limit of a battery controller

Life of this patent

Abstract

Claims26