LTC4055 Linear Technology, LTC4055 Datasheet - Page 3

• Manufacturer Part Number: LTC4055
• Description: USB Power Controller and Li-Ion Linear Charger
• Manufacturer: Linear Technology

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
R
SYMBOL
Battery Charger
V
I
I
I
V
V
V
V
V
t
T
Ideal Diode
R
R
V
V
I
I
Logic
V
V
V
I
V
I
V
V
I
BAT
BAT(MAX)
TRKL
TIMER
FWD
MAX
PULLDN
CHG,SD
WALL
LIM
FLOAT
TRKL
CENI
CENO
UVCL
RECHRG
FWD
OFF
OL
IH
IL
CHG,SD
WALL
WALL,HYS
PROG
I
FWD
DIO,ON
B
/ I
O
= R
CLPROG
= 100k, unless otherwise noted.
PARAMETER
Regulated Output Voltage
Current Mode Charge Current
Maximum Charge Current
Charge Current Load Dependency
Trickle Charge Current
Trickle Charge Threshold Voltage
Input Charger Enable Threshold
Voltage
Output Charger Enable Threshold
Voltage
Input/Output Undervoltage Current
Limit
Recharge Battery Threshold Voltage
TIMER Accuracy
Recharge Time
Low-Battery Trickle Charge Time
Junction Temperature in Constant
Temperature Mode
On Resistance, V
On Resistance V
Voltage Forward Drop (V
Diode Disable Battery Voltage
Load Current Limit for V
Diode Current Limit
Output Low Voltage (CHRG, ACPR)
Enable Input High Voltage
Enable Input Low Voltage
Logic Input Pull-Down Current
Charger Shutdown Threshold Voltage
on TIMER
Charger Shutdown Pull-Up Current
on TIMER
Wall Input Threshold Voltage
Wall Input Hysteresis
Wall Input Leakage Current
BAT
ON
Regulation
to V
OUT
ON
BAT
Regulation V
– V
OUT
)
A
CONDITIONS
(0 C to 85 C)
R
R
R
V
R
R
V
(Note 8)
V
V
(V
(V
(V
(V
I
V
C
Percent of Total Charge Time
Percent of Total Charge Time, V
V
V
V
V
V
V
V
10% Duty Cycle
I
SUSP, SHDN, HPWR Pin Low to High
SUSP, SHDN, HPWR Pin High to Low
SUSP, SHDN, HPWR
TIMER Falling
V
V
V
V
BAT
SINK
= 25 C. V
WALL
WALL
BAT
BAT
FLOAT
TIMER
BAT
BAT
BAT
BAT
BAT
BAT
IN
BAT
TIMER
WALL
WALL
WALL
PROG
PROG
PROG
PROG
PROG
I
BAT
IN
IN
OUT
OUT
= 3.5V
= I
– V
– V
= 2V, R
Rising
= 3.5V, 100mA Load
= 3.5V, 600mA Load
= 3.5V, 5mA Load
= 3.5V, 100mA Load
= 3.5V, 600mA
Falling
= 3.5V, V
/ I
= 5mA
– V
– V
The
= 2V
= 2V
Rising Threshold
Rising – V
= 1V
= 100k, HPWR = 5V, No Load
= 100k, HPWR = 0V, No Load
= 100k, V
= 50k, HPWR = 5V, No Load
= 50k, V
CHG
– V
= 0.1 F
= 0V
BAT
BAT
OUT
BAT
BAT
RECHRG
/2
) High to Low
) Low to High
IN1
, I
PROG
) High to Low
) Low to High
indicates specifications which apply over the full operating
OUT
OUT
OUT
= V
OUT
WALL
= 100mA
= 100k
= 2.8V, Pulsed with
= 5V, V
IN2
= 5V, V
Falling Threshold
= 5V, V
IN
IN
= 0V,
= 0V,
BAT
BAT
< 2.8V
= 3.5V, HPWR = 5V, WALL = 0V,
4.165
4.158
0.95
4.23
0.15
0.98
MIN
445
445
900
900
2.7
1.4
0.4
55
30
65
10
2
4.200
4.200
1.000
2.85
TYP
485
485
980
980
100
105
120
550
4.3
0.1
0.2
2.8
1.8
0.2
80
45
70
80
70
80
50
25
30
55
35
1
1
10
2
4
0
LTC4055
4.235
4.242
MAX
1060
1060
1.05
4.37
1.02
525
105
525
135
2.2
0.4
1.2
0.4
60
50
3
50
mA/mA
UNITS
4055p
3
mA
mA
mA
mA
mA
mA
mV
mV
mV
mV
mV
mV
mV
mV
mA
mV
nA
%
%
%
V
V
A
V
V
C
V
A
V
V
V
A
V
A
V