LTC1642IGN Просмотр технического описания (PDF) - Linear Technology
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LTC1642IGN Datasheet PDF : 16 Pages
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LTC1642
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage (VCC) .................................– 0.3V to 33V
SENSE Pin ................................... – 0.3V to (VCC + 0.3V)
ON, FB, OV, COMP +, COMP –
RESET, FAULT, COMPOUT .....................– 0.3V to 18.5V
Operating Temperature Range
LTC1642C ............................................... 0°C to 70°C
LTC1642I ............................................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
The LTC1642A is Recommended for Applications
Where VCC is Higher Than 12V.
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
CRWBR 1
BRK TMR 2
RST TMR 3
ON 4
RESET 5
FAULT 6
FB 7
GND 8
16 VCC
15 SENSE
14 GATE
13 REF
12 COMP–
11 COMP+
10 COMPOUT
9 OV
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 150°C, θJA = 130°C/W
ORDER PART NUMBER GN PART MARKING
LTC1642CGN
LTC1642IGN
1642
1642I
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 = 5V unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC
Operating Voltage Range
● 2.97
16.5
V
ICC
VCC Supply Current
ON = VCC
●
1.25
3.0
mA
VLKHI
VCC Undervoltage Lockout
VCC Rising
● 2.55 2.73 2.95
V
VLKLO
VCC Undervoltage Lockout
VCC Falling
● 2.35 2.50 2.95
V
VLKHYST VCC Undervoltage Lockout Hysteresis
230
mV
VFB
FB Pin Voltage Threshold
FB Falling
● 1.208 1.220 1.232
V
∆VFB
FB Pin Threshold Supply Variation
FB Falling, 2.97V ≤ VCC ≤ 16.5V
●
5
15
mV
VFBHST
FB Pin Voltage Threshold Hysteresis
3
mV
IFB(IN)
FB Pin Input Current
VOV = 5V
●
0
±1
µA
VOV
OV Pin Voltage Threshold
OV Rising
● 1.208 1.220 1.232
V
∆VOV
OV Pin Threshold Supply Variation
OV Rising, 2.97V ≤ VCC ≤ 16.5V
●
5
15
mV
VOVHYST OV Pin Voltage Threshold Hysteresis
3
mV
IOV(IN)
OV Pin Input Current
VFB = 5V
●
0
±1
µA
VRST
RST TMR Pin Voltage Threshold
RST TMR Rising
● 1.200 1.220 1.250
V
∆VRST
RST TMR Pin Threshold Supply Variation
RST TMR Rising, 2.97V ≤ VCC ≤ 16.5V ●
5
15
mV
IRST
RST TMR Pin Current
Timer On
Timer Off, VRSTTMR = 1.5V
● – 1.5 – 2.0 – 2.5
µA
10
mA
VBRK
BRK TMR Pin Voltage Threshold
BRK TMR Rising
● 1.200 1.220 1.250
V
∆VBRK
BRK TMR Pin Threshold Supply Variation
BRK TMR Rising, 2.97V ≤ VCC ≤ 16.5V ●
5
15
mV
IBRK
BRK TMR Pin Current
Timer On
Timer Off, VBRKTMR = 1.5V
● – 15 – 20 – 30
µA
10
mA
VCR
CRWBR Pin Voltage Threshold
CRWBR Rising
● 375
410
425
mV
∆VCR
CRWBR Pin Threshold Supply Variation
2.97V ≤ VCC ≤ 16.5V
●
4
15
mV
1642fb
2
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