LTC2954CDDB-1 データシートの表示（PDF） - Linear Technology
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LTC2954CDDB-1 Datasheet PDF : 18 Pages
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LTC2954
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 2.7V to 26.4V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN
Supply Voltage Range
IIN
VIN Supply Current
VUVL
VIN Undervoltage Lockout
VUVL(HYST)
VIN Undervoltage Lockout
Hysteresis
Pushbutton, Enable (PB, EN/EN))
VPB(MIN, MAX)
IPB
PB Voltage Range
PB Input Current
VPB(VTH)
VPB(VOC)
tEN, LOCKOUT
IEN(LKG)
PB Input Threshold
PB Open Circuit Voltage
EN/EN Lockout Time (Note 5)
EN/EN Leakage Current
VEN(VOL)
EN/EN Voltage Output Low
Power-On Timing Pin (ONT)
Steady State Operation
System Power-On, VIN = 2.7V to 24V
VIN Falling
Single-Ended
2.5V < VPB < 26.4V
VPB = 1V
VPB = 0.6V
PB Falling
IPB = –1μA
Enable Released → Enable Asserted
VEN/EN = 1V, Sink Current Off
VEN/EN = 26.4V, Sink Current Off
IEN/EN = 500μA
l 2.7
26.4
V
l
6
12
μA
l 2.2
2.3
2.5
V
50
400
700
mV
l –1
26.4
V
l
±1
μA
l –1
–6
–12
μA
l –3
–9
– 15
μA
l 0.6
0.8
1
V
1
1.6
2
V
l 200
256
325
ms
l
±0.1
μA
l
±1
μA
l
0.11
0.4
V
IONT(PU)
ONT Pull-Up Current
VONT = 0V
IONT(PD)
tDB, ON
ONT Pull-Down Current
Internal Turn-On Debounce Time
VONT = 1.3V
ONT Pin Float, PB Falling → Enable Asserted
tONT
Additional Adjustable Turn-On Time CONT = 1500pF
Power-Down Timing Pin (PDT)
l –2.4
–3
–3.6
μA
l 2.4
3
3.6
μA
l 26
32
41
ms
l
9
11.5 13.5
ms
IPDT(PU)
IPDT(PD)
tDB, OFF
t PD, MIN
PDT Pull-Up Current
VPDT = 0V
PDT Pull-Down Current
VPDT = 1.3V
Turn-Off Interrupt Debounce Time PB Falling → INT Falling
Internal PB Power-Down Debounce PDT Pin Float, PB Falling → Enable Released
Time (Note 4)
l –2.4
–3
–3.6
μA
l 2.4
3
3.6
μA
l 26
32
41
ms
l 52
64
82
ms
tPDT
Additional Adjustable PB
CPDT = 1500pF
Power-Down Debounce Time
l
9
11.5 13.5
ms
tINT,MIN
Minimum INT Pulse Width
t INT, MAX
Maximum INT Pulse Width
μP Handshake Pins (INT, KILL)
INT Asserted → INT Released
l 26
32
41
ms
CPDT = 1500pF, INT Asserted → INT Released
l 35
43.5 54.5
ms
IINT(LKG)
INT Leakage Current
VINT = 3V
l
±1
μA
VINT(VOL)
INT Output Voltage Low
IINT = 3mA
l
0.11
0.4
V
VKILL(TH)
KILL Input Threshold Voltage
KILL Falling
l 0.57
0.6
0.63
V
VKILL(HYST)
KILL Input Threshold Hysteresis
l 10
30
50
mV
IKILL(LKG)
KILL Leakage Current
VKILL = 0.6V
l
±0.1
μA
t KILL(PW)
KILL Minimum Pulse Width
l 30
μs
t KILL(PD)
KILL Propagation Delay
KILL Falling → Enable Released
l
30
μs
tKILL,ON BLANK KILL Turn-On Blanking (Note 3) KILL = Low, Enable Asserted → Enable Released
l 400
512
650
ms
2954fb
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