Datasheet

2
LTC3426
3426fa
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
V
IN
Voltage ................................................. –0.3V to 6V
SW Voltage .................................................. –0.3V to 6V
SHDN, FB Voltage ....................................... –0.3V to 6V
V
OUT
........................................................... –0.3V to 6V
Operating Temperature Range (Note 2) .. –40°C to 85°C
Storage Temperature Range ................. –65°C to 125°C
Lead Temperature (Soldering, 10 sec)................ 300°C
(Note 1)
PACKAGE/ORDER I FOR ATIO
UU
W
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range SHDN = V
IN
1.6 V
Output Voltage Adjust Range 2.25 5 V
Feedback Voltage ● 1.173 1.22 1.247 V
Feedback Input Current V
FB
= 1.23V 0.1 µA
Quiescent Current (Shutdown) V
SHDN
= 0V, Not Including Switch Leakage 1 µA
Quiescent Current SHDN = V
IN
, Not Switching 600 1000 µA
Switch Leakage V
SW
= 5V 0.2 10 µA
Switch On Resistance V
OUT
= 3.3V 0.11 Ω
V
OUT
= 5V 0.10 Ω
Current Limit ● 2 2.3 A
Maximum Duty Cycle V
FB
= 1.15V 80 85 %
Switching Frequency ● 0.85 1.2 1.5 MHz
SHDN Input High 1V
SHDN Input Low 0.4 V
SHDN Input Current SHDN = 5.5V 1 µA
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 1.8V, V
OUT
= 3.3V, unless otherwise specified.
CO VERTER CHARACTERISTICS
U
SW 1
GND 2
FB 3
6 V
IN
5 V
OUT
4 SHDN
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3426 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature are assured by design, characterization and correlation with
statistical process controls.
Note 3: 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 reliability.
T
JMAX
= 125°C, θ
JA
= 165°C/W, θ
JC
= 102°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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
LTC3426ES6 LTAJT
S6 PART NUMBER