Datasheet
LTC3412
2
3412fb
Input Supply Voltage ...................................– 0.3V to 6V
I
TH
, RUN, V
FB
Voltages ............................... –0.3V to V
IN
SYNC/MODE Voltages ................................ –0.3V to V
IN
SW Voltage ................................... – 0.3V to (V
IN
+ 0.3V)
Peak SW Sink and Source Current ......................... 6.5A
ORDER PART NUMBER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC3412EFE
LTC3412IFE
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
1
2
3
4
5
6
7
8
TOP VIEW
FE PACKAGE
16-LEAD PLASTIC TSSOP
16
15
14
13
12
11
10
9
SV
IN
PGOOD
I
TH
V
FB
R
T
SYNC/MODE
RUN/SS
SGND
PV
IN
SW
SW
PGND
PGND
SW
SW
PV
IN
17
FE PART MARKING
3412EFE
3412IFE
EXPOSED PAD (PIN 17) IS SGND, MUST BE SOLDERED TO PCB
T
JMAX
= 125°C, θ
JA
= 37.6°C/W, θ
JC
= 10°C/W
Operating Temperature
Range (Note 2) ....................................... – 40°C to 85°C
Junction Temperature (Note 5)............................. 125°C
Lead Temperature (Soldering, 10 sec)
TSSOP .............................................................. 300°C
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
ORDER PART NUMBER
LTC3412EUF
UF PART MARKING
3412
EXPOSED PAD (PIN 17) IS SGND, MUST BE SOLDERED TO PCB
T
JMAX
= 125°C, θ
JA
= 34°C/W, θ
JC
= 1°C/W
16 15 14 13
5 6 7 8
TOP VIEW
17
UF PACKAGE
16-LEAD (4mm × 4mm) PLASTIC QFN
9
10
11
12
4
3
2
1RUN/SS
SGND
PV
IN
SW
PGOOD
SV
IN
PV
IN
SW
SYNC/MODE
R
T
V
FB
I
TH
SW
PGND
PGND
SW
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 unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SV
IN
Signal Input Voltage Range 2.625 5.5 V
V
FB
Regulated Feedback Voltage (Note 3) ● 0.784 0.800 0.816 V
I
FB
Voltage Feedback Leakage Current 0.1 0.4 μA
ΔV
FB
Reference Voltage Line Regulation V
IN
= 2.7V to 5.5V (Note 3) ● 0.04 0.2 %/V
V
LOADREG
Output Voltage Load Regulation Measured in Servo Loop, V
ITH
= 0.36V ● 0.02 0.2 %
Measured in Servo Loop, V
ITH
= 0.84V ● – 0.02 –0.2 %
ΔV
PGOOD
Power Good Range ±7.5 ±9%
R
PGOOD
Power Good Pull-Down Resistance 120 200 Ω
I
Q
Input DC Bias Current (Note 4)
Active Current V
FB
= 0.78V, V
ITH
= 1V 250 330 μA
Sleep V
FB
= 1V, V
ITH
= 0V 62 80 μA
Shutdown V
RUN
= 0V, V
MODE
= 0V 0.02 1 μA