Datasheet

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