LTC4085EDE-3 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC4085EDE-3
Linear Technology
'LTC4085EDE-3' PDF : 24 Pages View PDF
OPERATION
Table 1. Operating Modes—PowerPath States
Current Limited Input Power (IN to OUT)
WALL PRESENT
Y
SUSPEND
X
VIN > 3.8V
X
X
Y
X
X
X
N
X
X
X
X
X
X
N
N
Y
LTC4085-3/LTC4085-4
VIN > (VOUT + 100mV)
X
X
X
N
X
Y
VIN > (VBAT + 100mV)
X
X
X
X
N
Y
CURRENT LIMIT ENABLED
N
N
N
N
N
Y
Battery Charger (OUT to BAT)
WALL PRESENT
X
X
X
SUSPEND
X
X
X
VOUT > 4.35V
N
X
Y
VOUT > (VBAT + 100mV)
X
N
Y
CHARGER ENABLED
N
N
Y
Ideal Diode (BAT to OUT)
WALL PRESENT
X
X
X
SUSPEND
X
X
X
VIN
VBAT > VOUT
VBAT > 2.8V
DIODE ENABLED
X
X
N
N
X
N
X
N
X
Y
Y
Y
Operating Modes—Pin Currents vs Programmed Currents (Powered from IN)
PROGRAMMING
ICL = ICHG
ICL > ICHG
ICL < ICHG
OUTPUT CURRENT
IOUT < ICL
IOUT = ICL = ICHG
IOUT > ICL
IOUT < (ICL – ICHG)
IOUT > (ICL – ICHG)
IOUT = ICL
IOUT > ICL
IOUT < ICL
IOUT > ICL
BATTERY CURRENT
IBAT = ICL – IOUT
IBAT = 0
IBAT = ICL – IOUT
IBAT = ICHG
IBAT = ICL – IOUT
IBAT = 0
IBAT = ICL – IOUT
IBAT = ICL – IOUT
IBAT = ICL – IOUT
INPUT CURRENT
IIN = IQ + ICL
IIN = IQ + ICL
IIN = IQ + ICL
IIN = IQ + ICHG + IOUT
IIN = IQ + ICL
IIN = IQ + ICL
IIN = IQ + ICL
IIN = IQ + ICL
IIN = IQ + ICL
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