MAX1679EUA+ Maxim Integrated Products, MAX1679EUA+ Datasheet - Page 7

• Manufacturer Part Number: MAX1679EUA+
• Description: IC BATT CHRGR 1CELL LITH 8-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX1679EUA+

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 5 V ~ 22 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. State Machine Diagram
FAST-CHARGE QUALIFICATION
LED: ON
PMOS FET: OFF
TOP-OFF QUALIFICATION
LED: ON
PMOS FET: OFF
PREQUALIFICATION
LED: 50% DUTY CYCLE, 2Hz
PMOS FET: OFF
5mA PRECHARGE: ON
TEMPERATURE NOT OK
TEMPERATURE NOT OK
_______________________________________________________________________________________
TEMPERATURE NOT OK
CELL NOT INSTALLED
(FROM ANY STATE)
OR V
BATT
< 2.5V
Single-Cell Li+ Battery Charger
TOP OFF
LED: ON
PMOS FET: PULSED TOP-OFF
FAST-CHARGE
LED: ON
PMOS FET: ON
SHUTDOWN
LED: OFF
PMOS FET: OFF
for Current-Limited Supply
BATT REGULATION VALUE (e.g., 4.2V)
CELL VOLTAGE REACHES
CHARGING POWER REMOVED
(FROM ANY STATE)
FAULT
LED: 50% DUTY CYCLE, 2Hz
PMOS FET: OFF
DONE
LED: 12% DUTY CYCLE, 0.25Hz
PMOS FET: OFF
5mA CANCELLATION CURRENT ENABLED
7