Datasheet
LTC3441
2
3441fa
V
IN
, V
OUT
Voltage........................................ –0.3V to 6V
SW1, SW2 Voltage
DC ...........................................................–0.3V to 6V
Pulsed < 100ns ...................................... –0.3V to 7V
SHDN/SS, MODE/SYNC Voltage ................. –0.3V to 6V
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Maximum Junction Temperature (Note 4) ........... 125°C
Storage Temperature Range ................ –65°C to 125°C
ORDER PART
NUMBER
(Note 1)
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC3441EDE
T
JMAX
= 125°C
θ
JA
= 53°C/W 1-LAYER BOARD
θ
JA
= 43°C/W 4-LAYER BOARD
θ
JC
= 4.3°C/W
EXPOSED PAD IS PGND (PIN 13)
MUST BE SOLDERED TO PCB
DE PART MARKING
3441
12
11
10
9
8
7
1
2
3
4
5
6
FB
V
C
V
IN
PV
IN
V
OUT
MODE/SYNC
SHDN/SS
GND
PGND
SW1
SW2
PGND
TOP VIEW
13
DE12 PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= V
OUT
= 3.6V,unless otherwise noted.
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Start-Up Voltage ● 2.3 2.4 V
Output Voltage Adjust Range ● 2.4 5.25 V
Feedback Voltage ● 1.19 1.22 1.25 V
Feedback Input Current V
FB
= 1.22V 1 50 nA
Quiescent Current—Burst Mode Operation V
C
= 0V, MODE/SYNC = 3V (Note 3) 25 40 μA
Quiescent Current—SHDN V
OUT
= SHDN = 0V, Not Including Switch Leakage 0.1 1 μA
Quiescent Current—Active MODE/SYNC = 0V (Note 3) 520 900 μA
NMOS Switch Leakage Switches B and C 0.1 7 μA
PMOS Switch Leakage Switches A and D 0.1 10 μA
NMOS Switch On Resistance Switches B and C 0.10 Ω
PMOS Switch On Resistance Switches A and D 0.11 Ω
Input Current Limit ● 2 3.2 A
Max Duty Cycle Boost (% Switch C On) ● 70 88 %
Buck (% Switch A In)
● 100 %
Min Duty Cycle ● 0%
Frequency Accuracy ● 0.85 1 1.15 MHz
MODE/SYNC Threshold ● 0.4 1.4 V
MODE/SYNC Input Current V
MODE/SYNC
= 5.5V 0.01 1 μA
Error Amp AV
OL
90 dB
Error Amp Source Current 14 μA
Error Amp Sink Current 300 μA
SHDN/SS Threshold When IC is Enabled ● 0.4 1 1.4 V
SHDN/SS Threshold When EA is at Max Boost Duty Cycle 2 2.4 V
SHDN/SS Input Current V
SHDN
= 5.5V 0.01 1 μA
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/