LT1641-1 Ver la hoja de datos (PDF) - Linear Technology
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LT1641-1 Datasheet PDF : 12 Pages
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LT1641-1/LT1641-2
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage (VCC) ...............................– 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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ON 1
FB 2
PWRGD 3
GND 4
8 VCC
7 SENSE
6 GATE
5 TIMER
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 110°C/W
ORDER PART NUMBER S8 PART MARKING
LT1641-1CS8
LT1641-1IS8
LT1641-2CS8
LT1641-2IS8
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: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
DC ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Vcc = 24V
SYMBOL
VCC
ICC
VLKO
VFBH
VFBL
VFBHST
IINFB
∆VFB
VSENSETRIP
IGATEUP
IGATEDN
∆VGATE
ITIMERUP
ITIMERON
VONH
VONL
VONHYST
IINON
VOL
IOH
PARAMETER
VCC Operating Range
VCC Supply Current
VCC 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 (VCC – VSENSE)
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
CONDITIONS
ON = 3V
FB Low to High Transition
FB High to Low Transition
VFB = GND
9V ≤ VCC ≤ 80V
VFB = 0V
VFB = 1V
Charge Pump On, VGATE = 7V
Any Fault Condition, VGATE = 2V
VGATE – VCC, VCC = 10.8V to 20V
VCC = 20V to 80V
VTIMER = 0V
VTIMER = 1V
ON Low to High Transition
ON High to Low Transition
VON = GND
IO = 2mA
IO = 4mA
VPWRGD = 80V
MIN
●9
●
● 7.5
● 1.280
● 1.221
●
●8
● 39
● –5
● 35
● 4.5
● 10
● – 24
● 1.5
● 1.280
● 1.221
●
●
●
TYP
2
8.3
1.313
1.233
80
12
47
– 10
70
– 80
3
1.313
1.233
80
MAX
80
5.5
8.8
1.345
1.245
–1
0.05
17
55
– 20
100
18
18
– 132
5
1.345
1.245
–1
0.4
2.5
10
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
2
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