Datasheet

LT3495/LT3495B/
LT3495-1/LT3495B-1
2
3495b1b1fa
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
CC
Voltage ...............................................................16V
SW Voltage
...............................................................40V
CAP Voltage
..............................................................40V
V
OUT
Voltage .............................................................40V
SHDN Voltage
...........................................................10V
CTRL Voltage
............................................................10V
FB Voltage
................................................................2.5V
Maximum Junction Temperature........................... 125°C
Operating Temperature Range (Note 2).. –40°C to 125°C
Storage Temperature Range
................... –65°C to 150°C
(Note 1)
TOP VIEW
11
DDB PACKAGE
10-LEAD (3mm × 2mm) PLASTIC DFN
GND
GND
V
CC
CTRL
SHDN
SW
CAP
CAP
V
OUT
FB
6
8
7
9
10
5
4
2
3
1
T
JMAX
= 125°C, θ
JA
= 76°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3495EDDB#PBF LT3495EDDB#TRPBF LDSS
10-Lead (3mm × 2mm) Plastic DFN
–40°C to 125°C
LT3495EDDB-1#PBF LT3495EDDB-1#TRPBF LDSV
10-Lead (3mm × 2mm) Plastic DFN
–40°C to 125°C
LT3495BEDDB#PBF LT3495BEDDB#TRPBF LDST
10-Lead (3mm × 2mm) Plastic DFN
–40°C to 125°C
LT3495BEDDB-1#PBF LT3495BEDDB-1#TRPBF LDSW
10-Lead (3mm × 2mm) Plastic DFN
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 2.2 2.5 V
Maximum Operating Voltage 16 V
FB Voltage V
CTRL
= 3V, (Note 3)
l
1.220 1.235 1.255 V
FB Voltage Line Regulation 0.03 %/V
FB Resistor FB Voltage = 1.235V
l
74.7 76 77 kΩ
Quiescent Current Not Switching 60 70 µA
Quiescent Current in Shutdown V
SHDN
= 0V, V
CC
= 3V 0 1 µA
Minimum Switch-Off Time After Start-Up (Note 4)
During Start-Up (Note 4)
200
500
ns
ns
Maximum Switch-Off Time LT3495/LT3495-1, V
FB
= 1.5V
l
17 26 35 µs
Maximum Switch-On Time 10 µs
Switch Current Limit LT3495/LT3495B
l
550 650 780 mA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3V, V
SHDN
= V
CC
, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS