LT1641-1/LT1641-2
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ON 1
FB 2
PWRGD 3
GND 4
8
7
6
5
V
CC
SENSE
GATE
TIMER
Supply Voltage (V
CC
) ...............................– 0.3V to 100V
Input Voltage (SENSE) .............................– 0.3V to 100V
Input Voltage (TIMER) ...............................– 0.3V to 44V
Input Voltage (FB, ON) ...............................– 0.3V to 60V
Output Voltage (PWRGD) ........................– 0.3V to 100V
Output Voltage (GATE) ............................– 0.3V to 100V
Operating Temperature Range
LT1641-1C, LT1641-2C ........................... 0°C to 70°C
LT1641-1I, LT1641-2I ........................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 125°C,
θ
JA
= 110°C/W
ORDER PART NUMBER
LT1641-1CS8
LT1641-1IS8
LT1641-2CS8
LT1641-2IS8
S8 PART MARKING
16411
16411I
16412
16412I
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
cc
= 24V
SYMBOL
V
CC
I
CC
V
LKO
V
FBH
V
FBL
V
FBHST
I
INFB
∆V
FB
V
SENSETRIP
I
GATEUP
I
GATEDN
∆V
GATE
I
TIMERUP
I
TIMERON
V
ONH
V
ONL
V
ONHYST
I
INON
V
OL
I
OH
PARAMETER
V
CC
Operating Range
V
CC
Supply Current
V
CC
Undervoltage Lockout
FB Pin High Voltage Threshold
FB Pin Low Voltage Threshold
FB Pin Hysteresis Voltage
FB Pin Input Current
FB Pin Threshold Line Regulation
SENSE Pin Trip Voltage (V
CC
– V
SENSE
)
GATE Pin Pull-Up Current
GATE Pin Pull-Down Current
External N-Channel Gate Drive
TIMER Pin Pull-Up Current
TIMER Pin Pull-Down Current
ON Pin High Threshold
ON Pin Low Threshold
ON Pin Hysteresis
ON Pin Input Current
PWRGD Output Low Voltage
PWRGD Pin Leakage Current
V
ON
= GND
I
O
= 2mA
I
O
= 4mA
V
PWRGD
= 80V
●
●
●
DC ELECTRICAL CHARACTERISTICS
CONDITIONS
●
MIN
9
●
●
TYP
2
MAX
80
5.5
8.8
1.345
1.245
–1
UNITS
V
mA
V
V
V
mV
µA
mV/V
mV
mV
µA
mA
V
V
µA
µA
V
V
mV
µA
V
V
µA
164112fc
ON = 3V
FB Low to High Transition
FB High to Low Transition
V
FB
= GND
9V
≤
V
CC
≤
80V
V
FB
= 0V
V
FB
= 1V
Charge Pump On, V
GATE
= 7V
Any Fault Condition, V
GATE
= 2V
V
GATE
– V
CC
, V
CC
= 10.8V to 20V
V
CC
= 20V to 80V
V
TIMER
= 0V
V
TIMER
= 1V
ON Low to High Transition
ON High to Low Transition
7.5
1.280
1.221
8.3
1.313
1.233
80
●
●
●
●
●
●
●
●
●
●
●
●
●
0.05
8
39
–5
35
4.5
10
– 24
1.5
1.280
1.221
– 80
3
1.313
1.233
80
–1
0.4
2.5
10
12
47
– 10
70
17
55
– 20
100
18
18
– 132
5
1.345
1.245
2
U
W
U
U
W W
W
LINER [ LINEAR TECHNOLOGY ]
