LTC4095EDC#TRMPBF

LTC4095 is a complete constant-current/constant voltage linear charger for single-cell lithium-ion/polymer batteries. Upto 950mA of charge current may be programmed via a single resistor from the PROG pin to ground. The HPWR pin allows the charge current to be set at 20% or 100% of its full-scale programmed value. An internal safety timer terminates charge current. The final float voltage is preset to 4.2V and held to a tight 0.5% tolerance. Also featured is an NTC thermistor input to monitor battery temperature while charging, a C/10 current detection output, automatic recharge, bad-battery detection and low-battery trickle charge. A thermal feedback loop regulates the charge current to limit the die temperature during high power operation or high ambient thermal conditions. It is used in applications such as PDAs, media players, cellular phones, other portable electronics.

• C/10 charge current detection output
• Internal safety timer termination
• NTC thermistor input for temperature qualified charging
• Constant-current/constant-voltage operation with thermal feedback
• Charge current monitor output for gas gauging
• Automatic recharge, bad-battery detection
• Battery charger quiescent current is 8.5µA typ at (TA = 25°C)
• Input supply voltage from 4.3V to 5.5V
• Operating temperature range from -40°C to 85°C
• Package style is 8-lead plastic DFN

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