LT3468 Ver la hoja de datos (PDF) - Linear Technology
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LT3468 Datasheet PDF : 12 Pages
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LT3468/LT3468-1/LT3468-2
ABSOLUTE AXI U RATI GS
(Note 1)
VIN Voltage .............................................................. 16V
SW Voltage ................................................ –0.4V to 50V
CHARGE Voltage ...................................................... 10V
DONE Voltage .......................................................... 10V
Current into DONE Pin .......................................... ±1mA
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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SW 1
GND 2
DONE 3
5 VIN
4 CHARGE
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
TJMAX = 125°C
θJA = 150°C ON BOARD OVER
GROUND PLANE
θJC = 90°C/W
ORDER PART
NUMBER
LT3468ES5
LT3468ES5-1
LT3468ES5-2
S5 PART
MARKING
LTAEC
LTAGQ
LTBCH
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3V, VCHARGE = VIN unless otherwise noted. (Note 2) Specifications
are for the LT3468, LT3468-1 and LT3468-2 unless otherwise noted.
PARAMETER
Quiescent Current
Input Voltage Range
Switch Current Limit
Switch VCESAT
VOUT Comparator Trip Voltage
VOUT Comparator Overdrive
DCM Comparator Trip Voltage
CHARGE Pin Current
Switch Leakage Current
CHARGE Input Voltage High
CHARGE Input Voltage Low
DONE Output Signal High
DONE Output Signal Low
DONE Leakage Current
CONDITIONS
Not Switching
VCHARGE = 0V
LT3468 (Note 3)
LT3468-2
LT3468-1
LT3468, ISW = 1A
LT3468-2, ISW = 650mA
LT3468-1, ISW = 400mA
Measured as VSW – VIN
300ns Pulse Width
Measured as VSW – VIN
VCHARGE = 3V
VCHARGE = 0V
VIN = VSW = 5V, in Shutdown
100kΩ from VIN to DONE
33µA into DONE Pin
VDONE = 3V, DONE NPN Off
MIN TYP MAX UNITS
5
8
mA
0
1
µA
q 2.5
16
V
1.1
1.2
1.3
A
0.77 0.87 0.97
A
0.45 0.55 0.65
A
330 430
mV
210 280
mV
150 200
mV
q 31
31.5
32
V
200 400
mV
q 10
36
80
mV
15
40
µA
0
0.1
µA
q
0.01
1
µA
q1
V
q
0.3
V
3
V
100 200
mV
20
100
nA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3468E/LT3468E-1/LT3468E-2 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.
Note 3: Specifications are for static test. Current limit in actual application
will be slightly higher.
346812f
2
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