SYNC Voltage .............................................................6V
Operating Junction Temperature Range (Note 2)
LT8606E ............................................ –40°C to 125°C
LT8606I ............................................. –40°C to 125°C
LT8606J ............................................ –40°C to 150°C
LT8606H ............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
BST
SW
INTV
CC
RT
SYNC
1
2
3
4
5
11
GND
10
9
8
7
6
EN/UV
V
IN
PG
TR/SS
FB
BST 1
SW 2
INTV
CC
3
RT 4
9
GND
8 EN/UV
7 V
IN
6 PG
5 FB
MSE PACKAGE
10-LEAD PLASTIC MSOP
θ
JA
= 40°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
DC PACKAGE
8-LEAD (2mm
×
2mm) PLASTIC DFN
θ
JA
= 102°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT8606EMSE#PBF
LT8606IMSE#PBF
LT8606HMSE#PBF
LT8606EDC#TRMPBF
LT8606IDC#TRMPBF
LT8606HDC#TRMPBF
LT8606BEDC#TRMPBF
LT8606BIDC#TRMPBF
LT8606BHDC#TRMPBF
AUTOMOTIVE PRODUCTS**
LT8606EMSE#WPBF
LT8606IMSE#WPBF
LT8606JMSE#WPBF
LT8606HMSE#WPBF
LT8606EDC#WTRMPBF
LT8606IDC#WTRMPBF
LT8606JDC#WTRMPBF
LT8606EMSE#WTRPBF
LT8606IMSE#WTRPBF
LT8606JMSE#WTRPBF
LT8606HMSE#WTRPBF
LT8606EDC#WTRPBF
LT8606IDC#WTRPBF
LT8606JDC#WTRPBF
LTGXT
LTGXT
LTGXT
LTGXT
LGXV
LGXV
LGXV
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
8-Lead Plastic 2mm × 2mm DFN
8-Lead Plastic 2mm × 2mm DFN
8-Lead Plastic 2mm × 2mm DFN
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
TAPE AND REEL
LT8606EMSE#TRPBF
LT8606IMSE#TRPBF
LT8606HMSE#TRPBF
LT8606EDC#TRPBF
LT8606IDC#TRPBF
LT8606HDC#TRPBF
LT8606BEDC#TRPBF
LT8606BIDC#TRPBF
LT8606BHDC#TRPBF
PART MARKING*
LTGXT
LTGXT
LTGXT
LGXV
LGXV
LGXV
LGXW
LGXW
LGXW
PACKAGE DESCRIPTION
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
8-Lead Plastic 2mm × 2mm DFN
8-Lead Plastic 2mm × 2mm DFN
8-Lead Plastic 2mm × 2mm DFN
8-Lead Plastic 2mm × 2mm DFN
8-Lead Plastic 2mm × 2mm DFN
8-Lead Plastic 2mm × 2mm DFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
LT8606HDC#WTRMPBF
LT8606HDC#WTRPBF
LGXV
8-Lead Plastic 2mm × 2mm DFN
–40°C to 150°C
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications.
Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**Versions
of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your
local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for
these models.
2
Rev. D
For more information
www.analog.com
LT8606/LT8606B
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Input Voltage
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
CONDITIONS
MIN
TYP
2.5
V
EN/UV
= 0V
V
EN/UV
= 2V, Not Switching, V
SYNC
= 0V or LT8606 DFN, V
IN
≤ 36V
V
IN
= 6V, V
OUT
= 2.7V, Output Load = 100µA
V
IN
= 6V, V
OUT
= 2.7V, Output Load = 1mA
MSOP Package
V
IN
= 6V, I
LOAD
= 100mA
V
IN
= 6V, I
LOAD
= 100mA
DFN Package
V
IN
= 6V, I
LOAD
= 100mA
V
IN
= 6V, I
LOAD
= 100mA
Feedback Voltage Line Regulation
Feedback Pin Input Current
Minimum On-Time
Minimum Off Time
Oscillator Frequency
V
IN
= 4.0V to 40V
V
FB
= 1V
I
LOAD
= 300mA, SYNC = 0V or LT8606 DFN
I
LOAD
= 300mA, SYNC = 1.9V or LT8606B DFN
I
LOAD
= 300mA
MSOP Package
R
T
= 221k, I
LOAD
= 250mA
R
T
= 60.4k, I
LOAD
= 250mA
R
T
= 18.2k, I
LOAD
= 250mA
DFN Package
R
T
= 221k, I
LOAD
= 250mA
R
T
= 60.4k, I
LOAD
= 250mA
R
T
= 18.2k, I
LOAD
= 250mA
Top Power NMOS On-Resistance
Top Power NMOS Current Limit
Bottom Power NMOS On-Resistance
SW Leakage Current
EN/UV Pin Threshold
EN/UV Pin Hysteresis
EN/UV Pin Current
PG Upper Threshold Offset from V
FB
PG Lower Threshold Offset from V
FB
PG Hysteresis
PG Leakage
PG Pull-Down Resistance
Sync Low Input Voltage
Sync High Input Voltage
TR/SS Source Current
TR/SS Pull-Down Resistance
Spread Spectrum Modulation Frequency
V
PG
= 42V
V
PG
= 0.1V
MSOP Only
INTV
CC
= 3.5V, MSOP Only
MSOP Only
Fault Condition, TR/SS = 0.1V, MSOP Only
V
SYNC
= 3.3V, MSOP Only
0.5
l
l
l
l
l
l
l
l
l
l
l
l
MAX
3.0
3.2
5
12
90
700
0.782
0.798
0.785
0.803
±0.06
±20
65
60
130
245
760
2.10
260
790
2.15
1.15
1.4
5
UNITS
V
µA
µA
µA
µA
V
V
V
V
%/V
nA
ns
ns
ns
kHz
kHz
MHz
kHz
kHz
MHz
mΩ
A
A
mΩ
µA
V
mV
nA
%
%
%
nA
Ω
V
V
µA
Ω
kHz
V
IN
Quiescent Current
V
IN
Current in Regulation
Feedback Reference Voltage
l
l
l
1
1.7
56
500
0.774
0.762
0.771
0.753
0.778
0.778
0.778
0.778
±0.02
35
35
93
155
640
1.90
140
610
1.85
0.65
0.65
200
700
2.00
200
700
2.00
375
0.9
1.1
240
l
l
l
I
LOAD
= 250mA
MSOP Package
DFN Package
V
IN
= 36V
EN/UV Rising
V
EN/UV
= 2V
V
FB
Rising
V
FB
Falling
l
l
l
l
l
0.99
1.05
50
1.11
±20
5.0
5.0
8.5
8.5
0.5
13.0
13.0
±200
550
0.4
1
0.9
2.7
2
300
3
1200
3.2
3
900
6
Rev. D
For more information
www.analog.com
3
LT8606/LT8606B
ELECTRICAL CHARACTERISTICS
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime. Absolute Maximum Ratings are those values beyond
which the life of a device may be impaired.
Note 2:
The LT8606E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization, and correlation with statistical process controls. The
LT8606I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8606H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
Note 3:
This IC includes overtemperature protection that is intended to
protect the device during overload conditions. Junction temperature will
exceed 150°C when overtemperature protection is active. Continuous
operation above the specified maximum operating junction temperature
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