LTC3555 Linear Technology, LTC3555 Datasheet - Page 4

• Manufacturer Part Number: LTC3555
• Description: High Efficiency USB Power Manager + Triple Step-Down DC/DC
• Manufacturer: Linear Technology

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ELECTRICAL CHARACTERISTICS
LTC3555
SYMBOL
NTC
V
V
V
I
Ideal Diode
V
R
I
Always On 3.3V LDO Supply
V
R
R
Logic (I
V
V
I
I
DV
I
V
ADDRESS
V
V
I
V
f
t
t
t
t
t
t
t
t
temperature range, otherwise specifi cations are at T
unless otherwise noted.
4
NTC
MAX_DIODE
PD1
2
DVCC
PD2
SCL
BUF
HD_STA
SU_STA
SU_STD
HD_DAT(OUT)
HD_DAT(IN)
SU_DAT
LOW
COLD
HOT
DIS
FWD
LDO3V3
IL
IH
DVCC_UVLO
IH
IL
OL
DROPOUT
CL_LDO3V3
OL_LDO3V3
C Port
CC
, SDA, SCL
, SDA, SCL
SDA, SCL
LIM0
, I
LIM1
, EN1, EN2, EN3)
PARAMETER
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Threshold Voltage
NTC Leakage Current
Forward Voltage
Internal Diode On Resistance, Dropout V
Internal Diode Current Limit
Regulated Output Voltage
Closed-Loop Output Resistance
Dropout Output Resistance
Logic Low Input Voltage
Logic High Input Voltage
I
Pull-Down Currents
Input Supply Voltage
DV
DV
I
Input High Threshold
Input Low Threshold
Pull-Down Current
Digital Output Low (SDA)
Clock Operating Frequency
Bus Free Time Between Stop and Start
Condition
Hold Time After (Repeated) Start
Condition
Repeated Start Condition Setup Time
Stop Condition Time
Data Hold Time
Input Data Hold Time
Data Setup Time
Clock Low Period
LIM0
2
C Address
CC
CC
, I
Current
UVLO
LIM1
, EN1, EN2, EN3
A
CONDITIONS
Rising Threshold
Hysteresis
Rising Threshold
Hysteresis
Falling Threshold
Hysteresis
V
V
I
0mA < I
SCL/SDA = 0kHz
I
OUT
PULLUP
NTC
BUS
BUS
= 25°C. V
= 10mA
= V
= 0V, I
= 0V
The
LDO3V3
= 3mA
BUS
OUT
●
BUS
= 5V
denotes the specifi cations which apply over the full operating
< 25mA
= 10mA
= 5V, BAT = 3.8V, DV
CC
= 3.3V, R
PROG
75.0
33.4
MIN
–50
400
225
100
0.7
1.6
3.1
1.2
1.6
1.3
0.6
0.6
0.6
1.3
70
0
= 1k, R
0001 001[0]
76.5
34.9
0.18
TYP
1.5
1.5
1.7
3.3
0.5
1.0
50
15
23
CLPROG
2
4
2
2
= 3k,
MAX
78.0
36.4
900
2.7
3.5
0.4
5.5
0.4
50
30
%DV
%DV
%V
%V
%V
%V
%V
UNITS
3555f
kHz
BUS
BUS
BUS
BUS
BUS
mV
mV
mV
nA
μA
μA
μA
μs
μs
μs
μs
ns
ns
ns
μs
CC
CC
Ω
Ω
Ω
A
V
V
V
V
V
V