Datasheet

LT3464
2
3464f
V
IN
, SHDN, CTRL Voltage ........................................ 10V
OUT, CAP Voltage .................................................... 36V
SW Voltage .............................................................. 36V
FB Voltage ................................................................. 6V
Maximum 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
T
JMAX
= 125°C, θ
JA
= 140°C/W, θ
JC
= 85°C/W
LT3464ETS8
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.6V, unless otherwise noted. (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage 2.0 2.3 V
Quiescent Current Not Switching 25 36 µA
V
SHDN
= 0.2V 0.01 0.5 µA
FB Comparator Trip Voltage V
FB
Falling, V
CTRL
= 3.6V ● 1.215 1.250 1.275 V
FB Comparator Hysteresis 10 mV
FB Pin Bias Current V
FB
= 1.25V, V
CTRL
= 3.6V ● 330 nA
FB Voltage Line Regulation 2.3V < V
IN
< 10V 0.05 0.1 %/V
Switch Off Time V
CAP
-V
IN
= 5V 250 ns
V
CAP
-V
IN
= 0V 1.0 µs
Switch Leakage Current V
SW
= 36V 0.02 1 µA
Switch V
CESAT
I
SW
= 80mA 190 300 mV
Switch Current Limit 85 115 140 mA
Schottky Forward Voltage I
SCHOTTKY
= 110mA 600 750 mV
Schottky Reverse Leakage V
CAP-SW
= 36V 1 10 µA
PNP Disconnect V
CAP-OUT
I
OUT
= 200µA 100 mV
I
OUT
= 10mA 190 mV
PNP Disconnect Q Current I
OUT
= 0, V
CAP
= 36V (Note 3) 1.5 5 µA
PNP Disconnect Leakage SHDN = 0.2, V
CAP
= 10V, V
OUT
= 0V 0.1 5 µA
PNP Disconnect Current Limit V
CAP
= 10V, V
OUT
= 0V 25 45 75 mA
SHDN Pin Current V
SHDN
= 3.6V 5 10 µA
SHDN Input Voltage High 2.3 V
SHDN Input Voltage Low 0.2 V
CTRL Pin Bias Current V
CTRL
= 0.5V, V
FB
= 1V ● 680 nA
CTRL to FB Offset V
CTRL
= 0.5V (Note 4) 2 7 mV
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3464E is 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.
Note 3: Current consumed by Disconnect PNP when there is no load on
the OUT pin.
Note 4: This figure is computed according to ((V
FB
falling + V
FB
rising)/2)
–V
CONTROL
.
CTRL 1
FB 2
OUT 3
GND 4
8 SHDN
7 V
IN
6 SW
5 CAP
TOP VIEW
TS8 PACKAGE
8-LEAD PLASTIC SOT-23
TS8 PART MARKING
LTG2