LTC3414 LINER [Linear Technology], LTC3414 Datasheet - Page 2

• Manufacturer Part Number: LTC3414
• Description: 4A, 4MHz, Monolithic Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

ABSOLUTE AXI U RATI GS
LTC3414
(Note 1)
Input Supply Voltage ................................... –0.3V to 6V
I
SYNC/MODE Voltages .................................. –0.3 to V
SW Voltages ................................. –0.3V to (V
Peak SW Sink and Source Current ......................... 9.5A
Operating Ambient Temperature Range
Junction Temperature (Notes 5, 6) ....................... 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
temperature range, otherwise specifications are at T
SYMBOL
V
I
V
V
R
I
f
f
R
R
I
V
I
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3414E is guaranteed to meet performance specifications
from 0 C to 70 C. Specifications over the –40 C to 85 C operating
ambient temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: The LTC3414 is tested in a feedback loop that adjusts V
achieve a specified error amplifier output voltage (I
2
ELECTRICAL CHARACTERISTICS
FB
Q
OSC
SYNC
LIMIT
LSW
TH
IN
FB
V
LOADREG
V
PGOOD
PFET
NFET
UVLO
RUN
FB
PGOOD
(Note 2) .............................................. – 40 C to 85 C
, RUN/SS, V
FB
PARAMETER
Input Voltage Range
Feedback Pin Input Current
Regulated Feedback Voltage
Reference Voltage Line Regulation
Output Voltage Load Regulation
Power Good Range
Power Good Resistance
Input DC Bias Current
Switching Frequency
Switching Frequency Range
SYNC Capture Range
R
R
Peak Current Limit
Undervoltage Lockout Threshold
SW Leakage Current
RUN Threshold
,
DS(ON)
DS(ON)
W
Active Current
Sleep
Shutdown
of P-Channel FET
of N-Channel FET
W W
TH
).
U
A
IN
= 25 C. V
FB
CONDITIONS
(Note 3)
(Note 3)
V
Measured in Servo Loop, V
Mesured in Servo Loop, V
(Note 4)
V
V
V
R
I
I
V
SW
SW
+ 0.3V)
IN
FB
FB
RUN
RUN
OSC
to
The
= 2.7V to 5.5V (Note 3)
= 0.75V, V
= 1V, V
= 300mA
= –300mA
= 294k
= 0V
= 0V, V
IN
IN
denotes the specifications which apply over the full operating
ITH
= 3.3V unless otherwise specified.
IN
ITH
= 0V, V
= 5.5V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note 4: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 5: T
dissipation P
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 reliabiability.
= 1.2V
SYNC/MODE
T
JMAX
RUN/SS
SYNC/MODE
PGND
SGND
PGND
PV
= 125 C,
SW
SW
MUST BE SOLDERED TO PCB
NC
RT
IN
J
ITH
EXPOSED PAD (PIN 21)
is calculated from the ambient temperature T
20-LEAD PLASTIC TSSOP
ITH
10
1
2
3
4
5
6
7
8
9
D
= 0.84V
= 0.36V
as follows: T
FE PACKAGE
TOP VIEW
JA
= 0V
= 38 C/W,
21
20
19
18
17
16
15
14
13
12
11
J
JC
PGND
V
I
PGOOD
SV
NC
PV
SW
SW
PGND
=T
TH
FB
= 10 C/W
IN
IN
A
+ (P
0.784
MIN
2.25
0.88
1.75
0.3
0.3
0.5
D
6
)(38 C/W)
U
–0.02
0.800
0.04
0.02
0.02
1.00
2.00
0.65
TYP
120
250
ORDER PART
0.1
64
67
50
LTC3414EFE
7.5
8
NUMBER
W
A
and power
0.816
MAX
–0.2
1.12
2.25
200
330
100
100
100
5.5
0.2
0.2
0.2
1.0
0.8
1
4
4
9
UNITS
U
MHz
MHz
MHz
3414f
m
m
%V
%
%
%
V
A
V
A
A
A
A
V
A
V