Li-ion battery charger


Posted on Nov 25, 2012

The circuit in Figure 1 can solve this problem by providing a constant 300-mV drop between VIN and VOUT at currents as high as 3A. The accuracy of the 300-mV drop is nearly as good as the accuracy of the input voltage, which in this case is approximately 1%. This circuit requires an input voltage that is fixed, regulated, and preferably current-limited.



A precision voltage divider across the regulated input derives the 300 mV necessary for the circuit to operate, thus eliminating the need for an external voltage reference. The circuit also includes a logic-level low-quiescent-current shutdown. In shutdow




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Crystal-controlled signal source
DC motor 12V speed controller circuit with explanation
Audio VU meter with Extra wide Dynamic Range 69 dB using Arduino
TL494 magic chip
universal battery charger schematic
Police siren using NE555
PLL Frequency Synthesizer
Tech Gear Multi-Voice Changer
Speed Control of DC Motor using Microcontroller 8051 withCircuit
Convert Digital Mains Timer To Low Voltage
Days to TN-1 Intelligent negative pulse charging circuit



Top