2
LT1617/LT1617-1
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
V
IN
, SHDN Voltage................................................... 15V
SW Voltage .............................................................. 36V
NFB Voltage ............................................................. –3V
Current into NFB Pin ............................................. –1mA
Junction Temperature...........................................125°C
Operating Temperature Range (Note 2) .. –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
ORDER PART
NUMBER
LT1617ES5
LT1617ES5-1
Consult factory for Industrial and Military grade parts.
S5 PART MARKING
SW 1
GND 2
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC SOT-23
NFB 3
5 V
IN
4 SHDN
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage LT1617-1 1.0 V
LT1617 1.2 V
Quiescent Current Not Switching 20 30 µA
V
SHDN
= 0V 1 µA
FB Comparator Trip Point ● –1.205 –1.23 –1.255 V
FB Comparator Hysteresis 8mV
Output Voltage Line Regulation 1.2V < V
IN
< 12V 0.05 0.1 %/V
FB Pin Bias Current (Note 3) V
NFB
= –1.23V ● 1.3 2 2.7 µA
Switch Off Time 400 ns
Switch V
CESAT
I
SW
= 60mA (LT1617-1) 85 120 mV
I
SW
= 300mA (LT1617) 250 350 mV
Switch Current Limit LT1617-1 75 100 125 mA
LT1617 300 350 400 mA
SHDN Pin Current V
SHDN
= 1.2V 2 3 µA
V
SHDN
= 5V 8 12 µA
SHDN Input Voltage High 0.9 V
SHDN Input Voltage Low 0.25 V
Switch Leakage Current Switch Off, V
SW
= 5V 0.01 5 µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1617 and LT1617-1 are guaranteed to meet specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Bias current flows out of the NFB pin.
T
JMAX
= 125°C, θ
JA
= 256°C/W
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 1.2V, V
SHDN
= 1.2V unless otherwise noted.
LTKF
LTKA