LTC3554 LINER [Linear Technology], LTC3554 Datasheet - Page 3

• Manufacturer Part Number: LTC3554
• Description: Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators
• Manufacturer: LINER [Linear Technology]

POWER MANAGER ELECTRICAL CHARACTERISTICS
The
V
SYMBOL
V
V
R
Battery Charger
V
I
V
V
h
I
V
ΔV
t
t
h
R
T
NTC
V
V
V
I
Ideal Diode
V
R
I
Logic Inputs (HPWR, SUSP)
V
V
R
Logic Output (CHRG)
V
I
CHG
TRKL
TERM
BADBAT
NTC
MAX
CHRG
PROG
C/10
UVLO
DUVLO
FLOAT
PROG
PROG,TRKL
LIM
COLD
HOT
DIS
FWD
IL
IH
OL
BUS
ON_ILIM
TRKL
ON_CHG
DROPOUT
PD
RECHRG
l
= 5V, V
denotes specifi cations that apply over the full operating temperature range, otherwise specifi cations are at T
BAT
PARAMETER
V
V
Lockout
Input Current Limit Power FET
On-Resistance (Between V
V
Constant-Current Mode Charge Current
PROG Pin Servo Voltage
PROG Pin Servo Voltage in Trickle Charge V
Ratio of I
Trickle Charge Current
Trickle Charge Threshold Voltage
Recharge Battery Threshold Voltage
Safety Timer Termination Period
Bad Battery Termination Time
End-of-Charge Indication Current Ratio
Battery Charger Power FET
On-Resistance (Between V
Junction Temperature in Constant
Temperature Mode
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold Voltage Falling NTC Voltage
NTC Disable Threshold Voltage
NTC Leakage Current
Forward Voltage Detection
Diode On-Resistance, Dropout
Diode Current Limit
Input Low Voltage
Input High Voltage
Internal Pull-Down Resistance
Output Low Voltage
Output Hi-Z Leakage Current
BUS
BUS
BAT
= 3.8V, HPWR = SUSP = PWR_ON1 = PWR_ON2 = 0V, R
Regulated Output Voltage
Undervoltage Lockout
to BAT Differential Undervoltage
BAT
to PROG Pin Current
BUS
OUT
and V
and BAT)
OUT
)
CONDITIONS
Rising Threshold
Falling Threshold
Rising Threshold
Falling Threshold
0 ≤ T
R
V
V
V
Threshold Voltage Relative to V
Timer Starts when V
V
(Note 6)
I
Rising NTC Voltage
Hysteresis
Hysteresis
Falling NTC Voltage
Hysteresis
V
(Note 12)
I
(Note 7)
I
V
BAT
OUT
CHRG
PROG
BAT
BAT
BAT
BAT
BAT
NTC
BAT
= 200mA
A
= 200mA, V
< V
< V
Rising
Falling
< V
= 4.5V, V
= V
= 5mA
≤ 85°C
= 1.87k, 0 ≤ T
TRKL
TRKL
TRKL
BUS
= 5V
CHRG
BUS
= 5V
A
BAT
= 0V
≤ 85°C
PROG
= V
FLOAT
= 1.87k, STBY = High, unless otherwise noted.
FLOAT
– 50mV
l
0.085
4.179
4.165
MIN
380
–75
–50
3.5
2.6
3.2
0.4
1.2
1.2
30
75
34
0
–100
TYP
2.75
200
350
400
220
750
110
240
3.8
3.6
4.2
4.2
2.9
0.5
0.1
0.1
1.3
1.3
1.7
50
40
76
35
50
15
65
1
4
1
4
0
LTC3554
A
4.221
4.235
MAX
0.115
–115
0.63
300
250
= 25°C,
420
3.9
2.2
0.4
50
77
36
50
3
5
1
mA/mA
mA/mA
%V
%V
%V
%V
%V
UNITS
Hour
Hour
3
3554f
mΩ
mΩ
mΩ
MΩ
BUS
BUS
BUS
BUS
BUS
mV
mV
mA
mA
mV
mV
mV
mV
nA
μA
°C
V
V
V
V
V
V
V
V
A
V
V