Datasheet

2
LT1640AL/LT1640AH
ABSOLUTE MAXIMUM RATINGS
W
WW
U
Supply Voltage (V
DD
– V
EE
) .................... –0.3V to 100V
PWRGD, PWRGD Pins ........................... –0.3V to 100V
DRAIN Pin ................................................. –2V to 100V
SENSE, GATE Pins.................................... –0.3V to 20V
UV, OV Pins .............................................. –0.3V to 60V
Maximum Junction Temperature ......................... 125°C
Operating Temperature Range
LT1640ALC/LT1640AHC ........................ 0°C to 70°C
LT1640ALI/LT1640AHI...................... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
(Note 1), All Voltages Referred to V
EE
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DC
V
DD
Supply Operating Range ● 10 80 V
I
DD
Supply Current UV = 3V, OV = V
EE
, SENSE = V
EE
● 1.3 5 mA
V
CB
Circuit Breaker Trip Voltage V
CB
= (V
SENSE
– V
EE
) ● 40 50 60 mV
I
PU
GATE Pin Pull-Up Current Gate Drive On, V
GATE
= V
EE
● –30 –45 –60 µA
I
PD
GATE Pin Pull-Down Current Any Fault Condition 24 50 70 mA
I
SENSE
SENSE Pin Current V
SENSE
= 50mV –20 µA
∆V
GATE
External Gate Drive (V
GATE
– V
EE
), 15V ≤ V
DD
≤ 80V ● 10 13.5 18 V
(V
GATE
– V
EE
), 10V ≤ V
DD
< 15V ● 6815 V
V
UVH
UV Pin High Threshold Voltage UV Low to High Transition ● 1.213 1.243 1.272 V
V
UVL
UV Pin Low Threshold Voltage UV High to Low Transition ● 1.198 1.223 1.247 V
V
UVHY
UV Pin Hysteresis 20 mV
I
INUV
UV Pin Input Current V
UV
= V
EE
● –0.02 –0.5 µA
V
OVH
OV Pin High Threshold Voltage OV Low to High Transition ● 1.198 1.223 1.247 V
V
OVL
OV Pin Low Threshold Voltage OV High to Low Transition ● 1.165 1.203 1.232 V
V
OVHY
OV Pin Hysteresis 20 mV
I
INOV
OV Pin Input Current V
OV
= V
EE
● –0.03 –0.5 µA
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2), V
DD
= 48V, V
EE
= 0V unless otherwise noted.
WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER PART
NUMBER
S8 PART MARKING
LT1640ALCN8
LT1640ALCS8
LT1640ALIN8
LT1640ALIS8
1640AL
640ALI
T
JMAX
= 125°C, θ
JA
= 120°C/W (N8)
T
JMAX
= 125°C, θ
JA
= 150°C/W (S8)
1
2
3
4
8
7
6
5
TOP VIEW
V
DD
DRAIN
GATE
SENSE
PWRGD
OV
UV
V
EE
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
ORDER PART
NUMBER
S8 PART MARKING
LT1640AHCN8
LT1640AHCS8
LT1640AHIN8
LT1640AHIS8
1640AH
640AHI
T
JMAX
= 125°C, θ
JA
= 120°C/W (N8)
T
JMAX
= 125°C, θ
JA
= 150°C/W (S8)
1
2
3
4
8
7
6
5
TOP VIEW
V
DD
DRAIN
GATE
SENSE
PWRGD
OV
UV
V
EE
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
ELECTRICAL CHARACTERISTICS
Consult factory for parts specified with wider operating temperature ranges.