LT1611 Linear Technology, LT1611 Datasheet - Page 2

• Manufacturer Part Number: LT1611
• Description: Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
• Manufacturer: Linear Technology

ABSOLUTE
(Note 1)
LT1611
V
SW Voltage ................................................– 0.4V to 36V
NFB Voltage ............................................................. – 3V
Current into NFB Pin ............................................. 1mA
SHDN Voltage .......................................................... 10V
Maximum Junction Temperature .......................... 125 C
Operating Temperature Range
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
temperature range, otherwise specifications are at T
PARAMETER
Minimum Operating Voltage
Maximum Operating Voltage
NFB Pin Bias Current
Feedback Voltage
Quiescent Current
Quiescent Current in Shutdown
Reference Line Regulation
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
Switch Leakage Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: C grade device specifications are guaranteed over the 0 C to 70 C
temperature range. In addition, C grade device specifications are assured
over the – 40 C to 85 C temperature range by design or correlation, but
are not production tested.
ELECTRICAL CHARACTERISTICS
2
IN
Commercial ............................................. 0 C to 70 C
Extended Commercial (Note 2) ........... – 40 C to 85 C
Voltage .............................................................. 10V
CESAT
W
MAXIMUM
W W
CONDITIONS
V
V
V
V
1.5V V
(Note 3)
I
V
V
V
SW
NFB
SHDN
SHDN
SHDN
SW
SHDN
SHDN
= 300mA
= 5V
= –1.23V
RATINGS
= 1.5V, Not Switching
= 0V, V
= 0V, V
= 3V
= 0V
IN
10V
IN
IN
U
= 2V
= 5V
A
= 25 C. V
The
IN
denotes the specifications which apply over the full operating
= 1.5V, V
PACKAGE/ORDER
Consult factory for Industrial and Military grade parts.
Note 3: Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycle.
SHDN
GND 2
NFB 3
SW 1
T
5-LEAD PLASTIC SOT-23
JMAX
= V
= 125 C,
S5 PACKAGE
IN
TOP VIEW
unless otherwise noted.
JA
= 256 C/W
– 1.205
– 2.7
MIN
550
1.0
82
1
5 V
4 SHDN
IN
INFORMATION
– 1.23
U
– 4.7
0.01
0.01
0.02
0.01
TYP
800
300
0.9
1.4
86
25
3
0
S5 PART MARKING
ORDER PART
LT1611CS5
NUMBER
W
– 1.255
LTES
MAX
– 6.7
350
1.1
4.5
0.5
1.0
0.2
1.8
0.3
0.1
10
50
1
UNITS
U
MHz
%/V
mA
mA
mV
%
V
V
A
V
A
A
A
V
V
A
A