LTC3409 LINER [Linear Technology], LTC3409 Datasheet - Page 3

• Manufacturer Part Number: LTC3409
• Description: 600mA Low Vin Buck Regulator in 3mm x 3mm DFN
• Manufacturer: LINER [Linear Technology]

The
V
SYMBOL
SYNC t
R
R
I
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3409E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: T
dissipation P
This IC includes overtemperature protection that is intended to protect the
device during momentary overload conditions. Overtemperature protection
becomes active at a junction temperature greater than the maximum
operating junction temperature. Continuous operation above the specified
maximum operating junction temperature may impair device reliability.
ELECTRICAL CHARACTERISTICS
LSW
IN
PFET
NFET
LTC3409: T
= 2.2V unless otherwise specified.
●
O
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
J
is calculated from the ambient temperature T
D
PARAMETER
SYNC Timeout
R
R
SW Leakage
according to the following formula:
J
DS(ON)
DS(ON)
= T
A
+ (P
of P-Channel FET
of N-Channel FET
D
)(43°C/W)
CONDITIONS
Delay from Removal of EXT CLK Until Fixed
Frequency Operation Begins (Note 7)
I
I
I
I
V
SW
SW
SW
SW
RUN
A
and power
= 100mA, Wafer Level
= 100mA, DD Package
= 100mA, Wafer Level
= 100mA, DD Package
= 0V, V
SW
= 0V or 5V, V
Note 4: The LTC3409 is tested in a proprietary test mode that connects
V
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 6: ∆V
voltage.
Note 7: Determined by design, not production tested.
FB
IN
to the output of the error amplifier.
= 5V
OVL
is the amount V
FB
must exceed the regulated feedback
MIN
±0.1
0.33
0.35
0.22
0.25
TYP
30
A
= 25°C.
LTC3409
MAX
±3
UNITS
3
3409f
µA
µs
Ω
Ω
Ω
Ω