Datasheet

LT3465/LT3465A
2
3465afa
V
OUT
1
GND 2
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
FB 3
6 SW
5 V
IN
4 CTRL
Input Voltage (V
IN
) ................................................. 16V
SW Voltage ............................................................. 36V
FB Voltage ................................................................ 2V
CTRL Voltage .......................................................... 10V
Operating Temperature Range (Note 2) .. 40°C to 85°C
Maximum Junction Temperature ......................... 125°C
Storage Temperature Range ................ 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
(Note 1)
ABSOLUTE AXI U RATI GS
WWWU
The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3V, V
CTRL
= 3V, unless otherwise noted.
LT3465 LT3465A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Minimum Operating Voltage 2.7 2.7 V
Maximum Operating Voltage 16 16 V
Feedback Voltage 0°C T
A
85°C 188 200 212 188 200 212 mV
FB Pin Bias Current 10 35 100 10 35 100 nA
Supply Current Not Switching 1.9 2.6 3.3 1.9 2.6 3.3 mA
CTRL = 0V 2.0 3.2 5.0 2.0 3.2 5.0 µA
Switching Frequency 0.8 1.2 1.6 1.8 2.4 2.8 MHz
Maximum Duty Cycle 90 93 90 93 %
Switch Current Limit 225 340 225 340 mA
Switch V
CESAT
I
SW
= 250mA 300 300 mV
Switch Leakage Current V
SW
= 5V 0.01 5 0.01 5 µA
V
CTRL
for Full LED Current 1.8 1.8 V
V
CTRL
to Enable Chip 150 150 mV
V
CTRL
to Shut Down Chip 50 50 mV
CTRL Pin Bias Current 48 60 72 48 60 72 µA
T
A
= 85°C 405060405060 µA
T
A
= –40°C 607590607590 µA
Soft-Start Time 600 µs
Schottky Forward Drop I
D
= 150mA 0.7 0.7 V
Schottky Leakage Current V
R
= 30V 4 4 µA
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3465E/LT3465AE are guaranteed to meet performance
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.
T
JMAX
= 125°C, θ
JA
= 256°C/W IN FREE AIR
θ
JA
= 120°C ON BOARD OVER GROUND PLANE
ORDER PART NUMBER
S6 PART MARKING
PACKAGE/ORDER I FOR ATIO
UU
W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LT3465ES6
LT3465AES6
LTH2
LTAFT
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/