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MAX8601 Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX8601 Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 13 page Single-/Dual-Input 1-Cell Li+ Chargers with OVP Protection and Programmable Charge Timer _______________________________________________________________________________________ 5 PIN MAX8600 MAX8601 NAME FUNCTION 1 1, 7 BAT Battery Connection. The IC delivers charging current and monitors battery voltage using BAT. Bypass BAT to GND with a 2.2µF or larger ceramic capacitor. Connect both BAT inputs together externally (MAX8601). BAT is high impedance when the IC is disabled. 2 2 SETI DC Charge-Current Programming Input. Connect a resistor from SETI to GND to set the maximum charging current when using the DC input, the prequal current from either input, and the CHG turn-off threshold. 3 3 THM Thermistor Input. Connect a 10k Ω NTC thermistor, in close proximity to the battery, from THM to ground to monitor the battery temperature. Connect THM to GND to disable the thermistor functionality. The IC suspends charging when RTHM is outside the hot and cold limits. 4 4 GND Ground 55 CT Timing Capacitor Input. Connect a capacitor from CT to GND to set the precharge timeout, top-off time, and fast-charge timeout. Connect CT to GND to disable the timers. 6, 7, 9 — N.C. No Connection. Make no external circuit connection. 88 EN Active-Low Enable Input. Drive low or connect EN to GND to enable the charger. Drive EN high to disable the charger. 10 10 POK Power-OK Monitor. POK is an open-drain output that pulls low when a valid charging source is detected at either DC or USB (MAX8601). POK is high impedance when EN is high. 11 11 CHG Charging-Status Output. CHG goes low when the battery is above 3V and being charged with a current greater than 7.5% of the current programmed with RSETI. CHG is high impedance when the charger is in prequal, top-off, or disabled. Pin Description Typical Operating Characteristics (continued) (VDC = 5V, RSETI = 2k Ω, VBAT = 3.6V, MAX8601 evaluation kit with thermal resistance of 50°C/W. TA = +25°C, unless otherwise noted.) 100 400 300 200 500 600 700 800 900 1000 1100 -40 10 -15 35 60 85 CHARGE CURRENT vs. AMBIENT TEMPERATURE (1A CHARGE) TA ( °C) VBAT = 4V VBAT = 3.6V RSETI = 1.5k Ω 0 100 200 300 400 500 600 700 800 0.010 0.045 0.080 0.115 0.150 FAST-CHARGE TIME vs. CCT CCT ( μF) |
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