ltc3447edd-trpbf Linear Technology Corporation, ltc3447edd-trpbf Datasheet - Page 3

• Manufacturer Part Number: ltc3447edd-trpbf
• Description: I2c Controllable Buck Regulator In 3mm ? 3mm Dfn
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3447E is guaranteed to meet performance specifi cations
from 0°C to 70°C. Specifi cations over the –40°C to 85°C operating
temperature are assured by design, characterization and correlation with
statistical process controls.
Note 3: T
dissipation, P
TI I G DIAGRA
SYMBOL
I
f
t
t
t
t
t
t
t
t
2
I2C, MAX
BUF
HD,RSTA
SU,RSTA
SU,STOP
HD,DIN
HD,DOUT
SU,DAT
SP
C Interface Timing
W
SDA
SCL
t
HD, STA
J
U
COMMAND
T
is calculated from the ambient temperature, T
J
START
PARAMETER
Maximum I
Bus Free Time Between Stop and Start Condition (Note 5)
Hold Time After (Repeated) Start Condition
Repeated Start Condition Setup Time
Stop Condition Setup Time
Data Hold Time, Input
Data Hold Time, Output
Data Setup Time
Pulse Width of Spikes
Suppressed by Input Filter
D
= T
, according to the following formula:
A
+ P
D
• 43°C/W
2
C Operating Frequency
t
LOW
t
r
W
t
SU, DAT
t
HIGH
t
f
t
HD, DAT
A
, and the power
A
= 25°C. V
Figure 1. Timing Diagram
CONDITION
(Note 5)
(Note 5)
(Note 5)
(Note 5)
(Note 5)
(Note 5)
(Note 5)
(Note 5)
The
t
SU, STA
●
IN
denotes the specifi cations which apply over the full operating
= 3.6V unless otherwise specifi ed.
This IC includes overtemperature protection that is intended to protect
the device during momentary overload conditions. Junction temperature
will exceed 125°C when overtemperature protection is active. Continuous
operation above the specifi ed maximum operating junction temperature
may impair device reliability.
Note 4: Dynamic supply current is higher due to gate charge being
delivered at the switching frequency.
Note 5: Determined by design, not production tested.
Note 6: The LTC3447 is tested in a proprietary test mode that connects
V
OUT
COMMAND
REPEATED
START
to FB.
t
HD, STA
t
MIN
280
SU, STO
1.3
0.6
0.6
20
50
0
COMMAND
TYP
410
STOP
LTC3447
t
BUF
MAX
400
670
150
COMMAND
START
3447 F01
UNITS
3
3447f
kHz
µs
µs
µs
µs
ns
ns
ns
ns