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LTC4085EDE Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4085EDE
Description  USB Power Manager with Ideal Diode Controller and Li-Ion Charger
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4085EDE Datasheet(HTML) 3 Page - Linear Technology

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LTC4085
3
4085fd
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCLPROG
CLPROG Pin Voltage
RPROG = 2k
RPROG = 1k
l
l
0.98
0.98
1
1
1.02
1.02
V
V
ISS
Soft-Start Inrush Current
IN or OUT
5
mA/μs
VCLEN
Input Current Limit Enable Threshold
Voltage
(VIN – VOUT) VIN Rising
(VIN – VOUT) VIN Falling
20
–80
50
–60
80
–20
mV
mV
Battery Charger
VFLOAT
Regulated Output Voltage
IBAT = 2mA
IBAT = 2mA, (0°C to 85°C)
4.165
4.158
4.2
4.2
4.235
4.242
V
V
IBAT
Current Mode Charge Current
RPROG = 100k (0.1%), No Load
RPROG = 50k (0.1%), No Load
l
l
465
900
500
1000
535
1080
mA
mA
IBAT(MAX)
Maximum Charge Current
(Note 8)
1.5
A
VPROG
PROG Pin Voltage
RPROG = 100k
RPROG = 50k
l
l
0.98
0.98
1
1
1.02
1.02
V
V
kEOC
Ratio of End-of-Charge Current to
Charge Current
VBAT = VFLOAT (4.2V)
l
0.085
0.1
0.11
mA/mA
ITRIKL
Trickle Charge Current
VBAT = 2V, RPROG = 100k (0.1%)
40
50
60
mA
VTRIKL
Trickle Charge Threshold Voltage
l
2.8
2.9
3
V
VCEN
Charger Enable Threshold Voltage
(VOUT – VBAT) Falling; VBAT = 4V
(VOUT – VBAT) Rising; VBAT = 4V
55
80
mV
mV
VRECHRG
Recharge Battery Threshold Voltage
VFLOAT – VRECHRG
l
65
100
135
mV
tTIMER
TIMER Accuracy
VBAT = 4.3V
-10
10
%
Recharge Time
Percent of Total Charge Time
50
%
Low-Battery Trickle Charge Time
Percent of Total Charge Time, VBAT < 2.8V
25
%
TLIM
Junction Temperature in Constant
Temperature Mode
105
°C
Internal Ideal Diode
RFWD
Incremental Resistance, VON Regulation IBAT = 100mA
125
m
Ω
RDIO(ON)
ON Resistance VBAT to VOUT
IBAT = 600mA
215
m
Ω
VFWD
Voltage Forward Drop (VBAT – VOUT)IBAT = 5mA
IBAT = 100mA
IBAT = 600mA
l
10
30
55
160
50
mV
mV
mV
VOFF
Diode Disable Battery Voltage
2.8
V
IFWD
Load Current Limit, for VON Regulation
550
mA
ID(MAX)
Diode Current Limit
2.2
A
External Ideal Diode
VFWD,EDA
External Ideal Diode Forward Voltage
VGATE = 1.85V; IGATE = 0
20
mV
Logic
VOL
Output Low Voltage, CHRG, ACPR
ISINK = 5mA
l
0.1
0.25
V
VIH
Input High Voltage
SUSP, HPWR Pin
l
1.2
V
VIL
Input Low Voltage
SUSP, HPWR Pin
l
0.4
V
IPULLDN
Logic Input Pull-Down Current
SUSP, HPWR
2
μA
The
l indicates specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VBAT = 3.7V, HPWR = 5V, WALL = 0V, RPROG = 100k,
RCLPROG = 2k, unless otherwise noted.
ELECTRICAL CHARACTERISTICS


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