LT8228E, I (Notes 8, 9) ...................... –40°C to 125°C
LT8228H J (Notes 8, 9) ...................... –40°C to 150°C
Storage Temperature Range .................. –65°C to 175°C
VC2 10
ISET1P 11
ISET2P 12
IMON2 13
FB2 14
UV2 15
RT 16
ISHARE 17
SNS2P 18
SNS2N 19
FE PACKAGE
38-LEAD PLASTIC TSSOP
T
JMAX
= 150°C,
θ
JA
= 25°C/W
EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT8228EFE#PBF
LT8228IFE#PBF
LT8228HFE#PBF
TAPE AND REEL
LT8228EFE#TRPBF
LT8228IFE#TRPBF
LT8228HFE#TRPBF
PART MARKING* PACKAGE DESCRIPTION
LT8228FE
LT8228FE
LT8228FE
38-Lead Plastic TSSOP
38-Lead Plastic TSSOP
38-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–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.
Rev. 0
For more information
www.analog.com
3
LT8228
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. DS1 = V1D = 48V, DS2 = BIAS = 14V, R
IN1
= 1k, R
IN2
= 1k, and ISHARE =
INTV
CC
unless otherwise specified.
SYMBOL
V
1
V
2
V
BIAS
I
QV1
I
QV2
I
QBIAS
I
SS
EN
THRESH
UV
V1
UV
V2
OV
V1
OV
V2
DRXN
SYNC
I
SHARETHRESH
V
CC
Regulator
V
DRVCC
∆V
DRVCC
I
DRVCCMAX
DRV
CCUV
DRV
CCOV
DRV
CC
Regulation Voltage
DRV
CC
Load Regulation
DRV
CC
Current Limit (Note 10)
DRV
CC
Undervoltage Threshold (Falling)
DRV
CC
Undervoltage Hysteresis
DRV
CC
Overvoltage Threshold (Rising)
DRV
CC
Overvoltage Hysteresis
V
BIAS
= 10V, I
DRVCC
= 100mA
INTV
CC
Regulation Voltage
INTV
CC
Undervoltage Threshold (Falling)
INTV
CC
Undervoltage Hysteresis
INTV
CC
Overvoltage Threshold (Rising)
INTV
CC
Overvoltage Hysteresis
12V < V
BIAS
< 100V
I
DRVCC
= 0mA to 100mA
V
BIAS
= 14V, V
DRVCC
= 8V
l
l
l
l
l
l
l
l
ELECTRICAL CHARACTERISTICS
PARAMETER
Buck Mode Input Voltage
Boost Mode Input Voltage
BIAS Operating Voltage Range
DS1 Quiescent Current (Shutdown)
DS1 Quiescent Current (Not Switching)
DS2 Quiescent Current (Shutdown)
DS2 Quiescent Current (Not Switching)
BIAS Quiescent Current (Shutdown)
BIAS Quiescent Current (Not Switching)
Soft-Start Current (Note 10)
ENABLE Threshold (Falling)
ENABLE Hysteresis
UV1 Voltage Threshold (Falling)
UV1 Hysteresis
UV2 Voltage Threshold (Falling)
UV2 Hysteresis
FB1 Over Voltage Threshold (Rising)
FB1 Over Voltage Hysteresis
FB2 Over Voltage Threshold (Rising)
FB2 Over Voltage Hysteresis
DRXN Logic Threshold (Rising)
DRXN Logic Threshold (Falling)
SYNC Logic Threshold (Rising)
SYNC Logic Threshold (Falling)
ISHARE Disable Threshold (Rising)
ISHARE Disable Hysteresis
CONDITIONS
l
l
l
MIN
6
6
8
TYP
MAX
100
100
100
UNITS
V
V
V
µA
µA
µA
µA
µA
mA
µA
V
mV
V
mV
V
mV
V
mV
V
mV
V
V
V
V
V
V
V
%
mA
V
mV
V
V
V
V
V
V
V
V
ENABLE = 0V
ENABLE = 2V, V
UV1
= V
UV2
= 0V
ENABLE = 0V
ENABLE = 2V, V
UV1
= V
UV2
= 0V
ENABLE = 0V
ENABLE = 2V, V
UV1
= V
UV2
= 0V
SS = 0V
l
l
l
l
10
200
10
10
4
3.7
9.5
1.16
1.18
1.18
1.28
1.28
1.05
0.75
0.65
2.45
10
1.20
100
1.20
100
1.20
100
1.30
100
1.30
100
1.10
0.80
0.95
0.80
2.49
0.40
10
1.0
100
6.1
14.6
160
6.35
300
15.1
1.0
1.0
3.8
3.45
4.50
4.0
3.6
0.2
4.7
0.5
45
350
40
20
10
5
10.5
1.24
1.22
1.22
1.32
1.32
1.15
0.85
1.10
2.53
Threshold Voltages
l
l
l
l
l
l
l
l
l
l
9.7
10.5
2.5
6.6
15.6
3.5
4.3
3.75
4.85
V
BIAS
– V
DRVCC
DRV
CC
Dropout Voltage
V
INTVCC
INTV
CCUV
INTV
CCOV
Rev. 0
4
For more information
www.analog.com
LT8228
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
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