LTC2953IDD-2-TRPBF 查看數據表（PDF） - Linear Technology
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LTC2953IDD-2-TRPBF Datasheet PDF : 20 Pages
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LTC2953
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 2.7V to 27V, unless otherwise noted (Note 2).
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
IEN(LKG)
EN/⎯E⎯N Leakage Current
VEN(VOL)
EN/⎯E⎯N Voltage Output Low
tEN, Lock Out
EN/⎯E⎯N Lock Out Time (Note 3)
On/Off Timing Pins (⎯P⎯B, UVLO, PDT, ⎯I⎯N⎯T)
VEN/⎯E⎯N = 1V, Sink Current Off
VEN/⎯E⎯N = 40V, Sink Current Off
IEN/⎯E⎯N = 500μA
Enable Released → Enable Asserted
●
±0.1
μA
●
±1
μA
●
0.11
0.4
V
● 52
64
82
ms
tDB, ON
Turn On Debounce Time
⎯P⎯B Falling → Enable Asserted
● 26
32
41
ms
IPDT(PU)
PDT Pull Up Current
VPDT = 0V
● –2.4
–3
–3.6
μA
IPDT(PD)
tDB, OFF
tPD, Min
PDT Pull Down Current
Turn Off Interrupt Debounce Time
Internal ⎯P⎯B Power Down Delay
Time (Note 4)
VPDT = 1.3V
⎯P⎯B, UVLO Falling → ⎯I⎯N⎯T Falling
⎯P⎯B, UVLO Falling → Enable Released
PDT Open
● 2.4
3
3.6
μA
● 26
32
41
ms
● 52
64
82
ms
tPDT
Additional Adjustable ⎯P⎯B Power CPDT = 1500pF
Down Delay Time
●
9
11.5 13.5
ms
tINT, Min
Minimum ⎯I⎯N⎯T Pulse Width
tINT, Max
Maximum ⎯I⎯N⎯T Pulse Width
μP Handshake Pins (⎯K⎯I⎯L⎯L, ⎯I⎯N⎯T)
⎯I⎯N⎯T Asserted → ⎯I⎯N⎯T Released
● 26
32
41
ms
CPDT = 1500pF, ⎯I⎯N⎯T Asserted → ⎯I⎯N⎯T Released
● 35
43.5 54.5
ms
VKILL(TH)
⎯K⎯I⎯L⎯L Input Threshold Voltage
⎯K⎯I⎯L⎯L Falling
● 0.57
0.6
0.63
V
VKILL(HYST)
⎯K⎯I⎯L⎯L Input Threshold Hysteresis
● 10
30
50
mV
t KILL(PW)
⎯K⎯I⎯L⎯L Minimum Pulse Width
● 30
μs
tKILL(PD)
⎯K⎯I⎯L⎯L Propagation Delay
⎯K⎯I⎯L⎯L Falling → Enable Released
●
30
μs
tKILL, ON BLANK ⎯K⎯I⎯L⎯L Turn On Blanking (Note 5) ⎯K⎯I⎯L⎯L = Low, Enable Asserted → Enable Released ● 400
512
650
ms
IKILL(LKG)
⎯K⎯I⎯L⎯L Leakage Current
VKILL = 0.6V
●
±0.1
μA
IINT(LKG)
⎯I⎯N⎯T Leakage Current
VINT = 3V
●
±0.1
μA
VINT(VOL)
⎯I⎯N⎯T Output Voltage Low
IINT = 3mA
●
0.11
0.4
V
Power Fail and Voltage Monitor Pins (⎯P⎯F⎯I, ⎯P⎯F⎯O, UVLO, VM, ⎯R⎯S⎯T)
VPFI(TH)
⎯P⎯F⎯I Input Threshold Voltage
Falling
● 492
500
508
mV
VUVLO(TH)
UVLO Input Threshold Voltage Falling
● 492
500
508
mV
VM(TH)
ΔVTH
VPFI(HYST)
Adjustable Reset Threshold
⎯P⎯F⎯I-UVLO Threshold Mismatch
⎯P⎯F⎯I Input Hysteresis
Falling/Rising
● 492
500
508
mV
● –5
0
5
mV
●
2
4
10
mV
VUVLO(HYST)
VPFO(VOL)
VRST(VOL)
UVLO Input Hysteresis
⎯P⎯F⎯O Output Voltage Low
⎯R⎯S⎯T Output Voltage Low
IPFO = 500μA
I = 3mA
● 30
50
70
mV
●
0.11
0.4
V
●
0.11
0.4
V
2953f
3
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