LTC3557EUF-1#TRPBF Linear Technology, LTC3557EUF-1#TRPBF Datasheet - Page 3

• Manufacturer Part Number: LTC3557EUF-1#TRPBF
• Description: IC USB POWER MANAGE 28-QFN
• Manufacturer: Linear Technology

Specifications of LTC3557EUF-1#TRPBF

• Applications: Handheld/Mobile Devices
• Voltage - Supply: 4.35 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

POWER MANAGER ELECTRICAL CHARACTERISTICS
The
V
SYMBOL
V
R
Battery Charger
V
I
I
V
V
h
I
V
ΔV
t
t
h
R
T
NTC
V
V
V
I
Ideal Diode
V
R
I
Always On 3.3V Supply
V
R
R
CHG
BAT
TRKL
TERM
BADBAT
NTC
MAX
PROG
TRKL
C/10
LIM
DUVLO
FLOAT
PROG
PROG(TRKL)
COLD
HOT
DIS
FWD
LDO3V3
BUS
ON_LIM
ON(CHG)
DROPOUT
OL(LDO3V3)
CL(LDO3V3)
RECHRG
●
= 5V, V
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
BAT
PARAMETER
V
Lockout
Input Current Limit Power FET
On-Resistance (Between V
V
Constant Current Mode Charge Current
Battery Drain Current
PROG Pin Servo Voltage
PROG Pin Servo Voltage in Trickle Charge
Ratio of I
Trickle Charge Current
Trickle Charge Rising Threshold
Trickle Charge Falling Threshold
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
NTC Disable Threshold Voltage
NTC Leakage Current
Forward Voltage Detection
Diode On-Resistance, Dropout
Diode Current Limit
Regulated Output Voltage
Open-Loop Output Resistance
Closed-Loop Output Resistance
BUS
BAT
= 3.8V, ILIM0 = ILIM1 = 5V, WALL = EN1 = EN2 = EN3 = 0V, R
Regulated Output Voltage
to V
BAT
OUT
OUT
to PROG Pin Current
Differential Undervoltage
and BAT)
BUS
and V
OUT
)
CONDITIONS
Rising Threshold
Falling Threshold
LTC3557
LTC3557, 0°C ≤ T
LTC3557-1
LTC3557-1, 0°C ≤ T
R
R
R
V
V
BAT < V
BAT < V
BAT Rising
BAT Falling
Threshold Voltage Relative to V
Timer Starts when BAT = V
BAT < V
(Note 6)
Rising NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
NTC = V
I
I
(Note 7)
0mA < I
BAT = 3.0V, V
OUT
OUT
BUS
BUS
PROG
PROG
PROG
= 10mA
= 1A
> V
= 0V, I
= 1k, Input Current Limit = 2A
= 2k, Input Current Limit = 1A
= 5k, Input Current Limit = 400mA
TRKL
TRKL
TRKL
LDO3V3
BUS
UVLO
OUT
= 5V
BUS
, Charger Off, I
< 25mA
= 0μA (Ideal Diode Mode)
A
= 0V
≤ 85°C
A
≤ 85°C
PROG
FLOAT
OUT
FLOAT
= 0μA
– 50mV
= 2k, R
CLPROG
LTC3557/LTC3557-1
●
●
●
●
= 2.1k.
4.179
4.165
4.079
4.065
0.085
MIN
−75
−50
950
465
180
2.5
3.2
0.4
1.2
3.1
40
75
34
5
4.200
4.200
4.100
4.100
1.000
0.100
1000
1000
−100
2.85
2.75
TYP
−50
500
200
200
110
200
0.2
0.5
0.1
1.3
1.3
1.7
3.6
3.3
3.2
55
50
76
35
50
15
24
50
6
4
4.221
4.235
4.121
4.135
0.115
−115
MAX
1050
100
535
220
100
3.0
4.8
0.6
2.2
3.5
27
60
77
36
50
25
A
= 25°C.
%V
%V
%V
%V
%V
mA/mA
mA/mA
UNITS
35571fc
3
Hour
Hour
VNTC
VNTC
VNTC
VNTC
VNTC
mΩ
mΩ
mV
mV
mA
mA
mA
mA
mV
mV
mV
μA
μA
nA
°C
Ω
Ω
Ω
V
V
V
V
V
V
V
V
A
V