LTC3407-4 Linear Technology, LTC3407-4 Datasheet - Page 3

• Manufacturer Part Number: LTC3407-4
• Description: Dual Synchronous 800mA 2.25MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

200mA/DIV
temperature range, otherwise specifications are at T
SYMBOL
POR
V
I
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime. Pins of regulators should not exceed 6V
Note 2: The LTC3407E-4 is guaranteed to meet specified performance
from 0°C to 85°C. Specifications over the – 40°C and 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
20mV/DIV
RUN
RUN
MODE
5V/DIV
V
OUT
SW
I
L
Burst Mode Operation
V
V
I
LOAD
IN
OUT
= 3.6V
= 1.8V
= 100mA
PARAMETER
Power-On Reset Threshold
Power-On Reset On-Resistance
Power-On Reset Delay
RUN Threshold
RUN Leakage Current
MODE Threshold Low
MODE Threshold High
2µs/DIV
W
34073 G01
U
200mA/DIV
20mV/DIV
5V/DIV
V
OUT
SW
I
A
L
Pulse Skipping Mode
V
V
I
= 25°C. V
LOAD
IN
OUT
CONDITIONS
V
V
FBX
FBX
= 3.6V
= 1.8V
= 20mA
The
Ramping Up, MODE/SYNC = 0V
Ramping Down, MODE/SYNC = 0V
●
IN
denotes the specifications which apply over the full operating
= 3.6V, unless otherwise specified. (Note 2)
1µs/DIV
Note 3: The LTC3407-4 is tested in a proprietary test mode that connects
V
Note 4: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 5: T
according to the following formula: T
Note 6: The DFN switch on-resistance is guaranteed by correlation to
wafer level measurements.
FB
to the output of the error amplifier.
J
is calculated from the ambient T
T
34073 G02
A
= 25°C unless otherwise specified.
200mV/DIV
500mA/DIV
500mA/DIV
I
V
LOAD
●
●
OUT
I
L
V
Load Step
V
V
I
LOAD
IN
IN
OUT
J
MIN
0.3
= T
0
– 0.5
= 3.6V
= 1.8V
= 80mA ~ 800mA
A
A
+ (P
www.DataSheet4U.com
and power dissipation P
65536
LTC3407-4
–8.5
0.01
D
TYP
100
8.5
1
• θ
10µs/DIV
JA
).
MAX
200
1.5
0.5
V
1
IN
UNITS
Cycles
D
34074 G03
34074f
3
µA
%
%
Ω
V
V
V