LTC3411 Linear Technology, LTC3411 Datasheet - Page 2

• Manufacturer Part Number: LTC3411
• Description: 1.25A/ 4MHz/ Synchronous Step-Down DC/DC Converter
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC3411
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
I
V
g
I
V
f
f
I
R
I
V
PV
V
SYNC/MODE Voltage .................... – 0.3V to (V
SW Voltage ................................... – 0.3V to (V
PGOOD Voltage ...........................................– 0.3V to 6V
Operating Ambient Temperature Range
(Note 2) .................................................. – 40 C to 85 C
2
FB
S
OSC
SYNC
LIM
SW(LKG)
m(EA)
SYNC/MODE
IN
FB
SHDN/RT
UVLO
V
V
DS(ON)
FB
LINEREG
LOADREG
IN
SHDN/R
, I
(EXPOSED PAD MUST BE SOLDERED TO PCB)
, SV
T
SGND
PGND
TH
JMAX
10-LEAD (3mm 3mm) PLASTIC DFN
SW
, SHDN/R
T
IN
= 125 C,
1
2
3
4
5
Voltages .....................................– 0.3V to 6V
DD PACKAGE
TOP VIEW
JA
PARAMETER
Operating Voltage Range
Feedback Pin Input Current
Feedback Voltage
Reference Voltage Line Regulation
Output Voltage Load Regulation
Error Amplifier Transconductance
Input DC Supply Current (Note 4)
Shutdown Threshold High
Active Oscillator Resistor
Oscillator Frequency
Synchronization Frequency
Peak Switch Current Limit
Top Switch On-Resistance (Note 6)
Bottom Switch On-Resistance (Note 6)
Switch Leakage Current
Undervoltage Lockout Threshold
= 43 C/W,
T
Active Mode
Sleep Mode
Shutdown
W
Voltages .......... – 0.3V to (V
10
JC
9
8
7
6
= 3 C/W
I
V
PGOOD
SV
PV
TH
W W
FB
IN
IN
U
DD PART MARKING
ORDER PART
LTC3411EDD
W
NUMBER
LADT
U
A
IN
IN
IN
= 25 C. V
+ 0.3V)
+ 0.3V)
+ 0.3V)
CONDITIONS
(Note 3)
(Note 3)
V
I
I
I
V
V
V
R
(Note 7)
(Note 7)
I
V
V
V
V
TH
TH
TH
TH
IN
FB
SYNC/MODE
SHDN/RT
IN
IN
IN
IN
T
The
= 324k
= 0.36, (Note 3)
= 0.84, (Note 3)
Pin Load = 5 A (Note 3)
= 1.3
= 2.7V to 5V
= 3.3V
= 3.3V
= 6V, V
Ramping Down
U
= 0.75V, SYNC/MODE = 3.3V
(Note 1)
IN
denotes the specifications which apply over the full operating
= 3.3V
= 3.3V, R
ITH/RUN
= 3.3V, V
Junction Temperature (Notes 5, 8) ....................... 125 C
Storage Temperature Range
Lead Temperature (Soldering, 10 sec).................. 300 C
SYNC/MODE
SHDN/R
T
DD Package ...................................... – 65 C to 125 C
MS Package .................................... – 65 C to 150 C
JMAX
= 0V, V
SGND
PGND
T
FB
SW
= 125 C,
= 324k unless otherwise specified. (Note 2)
T
= 1V
10-LEAD PLASTIC MSOP
FB
1
2
3
4
5
= 0V
MS PACKAGE
JA
TOP VIEW
= 120 C/W,
JC
10
9
8
7
6
= 10 C/W
I
V
PGOOD
SV
PV
TH
FB
IN
IN
2.625
0.784
2.375
0.85
MIN
0.4
1.6
V
MS PART MARKING
– 0.02
IN
324k
0.04
0.11
0.11
0.01
TYP
800
240
0.8
0.02
0.1
2.5
62
– 0.6 V
1
2
ORDER PART
LTC3411EMS
NUMBER
LTQT
IN
0.816
2.625
MAX
– 0.2
1.15
0.15
0.15
350
100
5.5
0.2
1M
0.1
0.2
1
– 0.4
4
4
1
sn3411 3411fs
UNITS
MHz
MHz
MHz
%/V
%
%
V
A
V
S
A
A
A
V
A
A
V