LTC4071
Li-Ion/Polymer Shunt
Battery Charger System with
Low Battery Disconnect
Description Features Charger Plus Pack Protection in One IC
n Low Operating Current (550nA)
n Near Zero Current ( VFLOAT l ICCQ VCC Operating Current VHBO Low, ADJ = VCC l mA
nA
4071fc 2 LTC4071
Electrical
Characteristics The
l denotes the specifications which apply over the full operating junction temperature range. Conditions are VNTC = VADJ = VCC, VLBSEL = GND, TJ = 25В°C unless otherwise specified. Current into a pin
is positive and current out of a pin is negative. All voltages are referenced to GND unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS 0.01
0.01 25 nA
nA 4 6 О© Low Battery Disconnect
ILEAK Battery Disconnect Leakage
Current VCC < VBAT = 2.65V RDSON Resistance of VCC – BAT Switch IBAT = –1mA, VHBO High VLBD Low Battery Disconnect l VBAT Falling, IBAT = –1mA, LBSEL = VCC, 0°C < Temp < 125°C
VBAT Falling, IBAT = –1mA, LBSEL = VCC 2.60 2.70 2.79 V l 2.52 2.70 2.79 V 3.05 3.20 3.28 V l 2.95 3.20 3.28 V VBAT Falling, IBAT = –1mA, LBSEL = GND, 0°C < Temp < 125°C
VBAT Falling, IBAT = –1mA, LBSEL = GND
VLBC_BAT
VLBC_VCC Low Battery Connect
Low Battery Connect VBAT Rising, IBAT = –1mA, LBSEL = VCC 2.97 V VBAT Rising, IBAT = –1mA, LBSEL = GND 3.53 V VCC Rising, LBSEL = VCC …