LTC3426 Datasheet, PDF (2/12 Pages) Linear Technology – 1.2MHz Step-Up DC/DC Converter in SOT-23

LTC3426
ABSOLUTE AXI U RATI GS
(Note 1)
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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SW 1
GND 2
FB 3
6 V_IN
5 V_OUT
4 SHDN
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T_JMAX = 125°C, θ_JA = 165°C/W, θ_JC = 102°C/W
ORDER PART
NUMBER
LTC3426ES6
S6 PART
MARKING
LTAJT
Consult LTC Marketing for parts specified with wider operating temperature ranges.
CO VERTER CHARACTERISTICS _{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.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
Output Voltage Adjust Range
SHDN = V_IN
1.6
4.3
V
2.25
5
V
Feedback Voltage
● 1.173
1.22
1.247
V
Feedback Input Current
Quiescent Current (Shutdown)
Quiescent Current
Switch Leakage
Switch On Resistance
Current Limit
V_FB = 1.23V
V_SHDN = 0V, Not Including Switch Leakage
SHDN = V_IN, Not Switching
V_SW = 5V
V_OUT = 3.3V
V_OUT = 5V
●
2
0.1
µA
1
µA
600
1000
µA
0.2
10
µA
0.11
Ω
0.10
Ω
2.3
A
Maximum Duty Cycle
Switching Frequency
V_FB = 1.15V
80
85
● 0.85
1.2
%
1.5
MHz
SHDN Input High
1
V
SHDN Input Low
0.4
V
SHDN Input Current
SHDN = 5.5V
1
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3426 is guaranteed to meet performance specifications
from 0°C to 70°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.
3426f
2