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