DC672A

DC672A demonstration circuit is a single cell Li-Ion charger featuring LTC®4058 in a DFN 3x3. Charge rates as high as 800mA can be achieved due to the LTC®4058 package’s excellent thermal performance and internal die temperature control loop that prevents excessive PCB heating under worst-case conditions. The user is provided with a control jumper to enable the charger. An enable terminal is also provided to simplify wiring the demo board into a system. The user is also provided with 3 status outputs. The PROG terminal outputs a voltage proportional to the charge current. The active-low ACPR terminal is pulled low whenever sufficient input voltage is present to allow battery charging. The active-low CHARGE terminal is pulled low every time charge current is supplied to the output. The status of the active-low ACPR and active-low CHARGE outputs of the LTC4058 are also indicated visually by two LED’s.

• 4.2V to 6.3V input voltage range
• 800mA ±7% Iout at Vin=5V, Vbat=3.6V
• 4.20V ±1% float voltage at Vin =5V
• 2.9V ±0.1V trickle charge threshold at VIN = 5V
• 65mA-95mA C/10 detection at VIN =5V Vbat=4.2
• Vfloat – 60mV – Vfloat-150mV recharge threshold at Vin = 5V