LTC3564 LINER [Linear Technology], LTC3564 Datasheet - Page 3

• Manufacturer Part Number: LTC3564
• Description: 2.25MHz, 1.25A Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

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
reliabilty and lifetime.
Note 2: The LTC3564E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C to
125°C operating junction termperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3564I is guaranteed over the full –40°C to 125°C operating junction
temperature range. High junction temperatures degrade operating
lifetimes. Operating lifetime is derated at junction temperatures greater
than 125°C.
ELECTRICAL CHARACTERISTICS
The
V
SYMBOL
I
f
R
R
I
V
I
t
S
OSC
LSW
RUN
SOFTSTART
PFET
NFET
RUN
IN
= 3.6V unless otherwise specified.
●
denotes specifications which apply over the full operating junction temperature range, otherwise specifications are T
PARAMETER
Input DC Bias Current
Oscillator Frequency
R
R
SW Leakage
RUN Threshold
RUN Leakage Current
Soft-Start Time
DS(ON)
DS(ON)
Active Mode
Sleep Mode
Shutdown
of P-Channel FET
of N-Channel FET
CONDITIONS
(Note 5)
V
V
V
V
S5 Package
DCB Package
S5 Package
DCB Package
V
V
FB
FB
RUN
FB
RUN
FB
= 0.5V or V
= 0.62V or V
= 0.6V or V
from 10% to 90% Full Scale
= 0V, V
= 0V, V
IN
SW
OUT
OUT
= 4.2V
= 0V or 5V, V
OUT
= 90%, I
= 100%
= 103%, I
Note 3: T
dissipation P
Note 4: The LTC3564 is tested in a proprietary test mode.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 6: 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 specified maximum operating junction
temperature may impair device reliability.
LOAD
LTC3564ES5: T
LTC3564EDCB: T
IN
LOAD
= 5V
= 0A
J
= 0A
is calculated from the ambient temperature T
D
according to the following formula:
J
= T
J
= T
A
+ (P
A
+ (P
●
●
●
D
)(215°C/W)
D
)(64°C/W)
MIN
1.8
0.3
0.6
±0.01
±0.01
2.25
0.15
0.15
0.15
0.15
TYP
300
0.1
0.9
20
1
LTC3564
A
MAX
400
2.7
0.2
0.2
1.5
1.2
and power
±1
±1
35
1
A
= 25°C.
UNITS
3
3564f
MHz
ms
μA
μA
μA
μA
μA
Ω
Ω
Ω
Ω
V