Linear Technology DC1090A - LTC2954 | Push Button On/Off Controller with uP Interrupt DC1090A DC1090A Hoja De Datos
Los códigos de productos
DC1090A
LTC2954
3
2954fb
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 2.7V to 26.4V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
Supply Voltage Range
Steady State Operation
l
2.7
26.4
V
I
IN
V
IN
Supply Current
System Power-On, V
IN
= 2.7V to 24V
l
6
12
μA
V
UVL
V
IN
Undervoltage Lockout
V
IN
Falling
l
2.2
2.3
2.5
V
V
UVL(HYST)
V
IN
Undervoltage Lockout
Hysteresis
50
400
700
mV
Pushbutton, Enable (PB, EN/EN))
V
PB(MIN, MAX)
PB Voltage Range
Single-Ended
l
–1
26.4
V
I
PB
PB Input Current
2.5V < V
PB
< 26.4V
V
PB
= 1V
V
PB
= 0.6V
l
l
l
–1
–3
–6
–9
±1
–12
–15
μA
μA
μA
μA
μA
V
PB(VTH)
PB Input Threshold
PB Falling
l
0.6
0.8
1
V
V
PB(VOC)
PB Open Circuit Voltage
I
PB
= –1μA
1
1.6
2
V
t
EN, LOCKOUT
EN/EN Lockout Time (Note 5)
Enable Released
→ Enable Asserted
l
200
256
325
ms
I
EN(LKG)
EN/EN Leakage Current
V
EN/
EN
= 1V, Sink Current Off
V
EN/
EN
= 26.4V, Sink Current Off
l
l
±0.1
±1
μA
μA
μA
V
EN(VOL)
EN/EN Voltage Output Low
I
EN/
EN
= 500μA
l
0.11
0.4
V
Power-On Timing Pin (ONT)
I
ONT(PU)
ONT Pull-Up Current
V
ONT
= 0V
l
–2.4
–3
–3.6
μA
I
ONT(PD)
ONT Pull-Down Current
V
ONT
= 1.3V
l
2.4
3
3.6
μA
t
DB, ON
Internal Turn-On Debounce Time
ONT Pin Float, PB Falling
→ Enable Asserted
l
26
32
41
ms
t
ONT
Additional Adjustable Turn-On Time C
ONT
= 1500pF
l
9
11.5
13.5
ms
Power-Down Timing Pin (PDT)
I
PDT(PU)
PDT Pull-Up Current
V
PDT
= 0V
l
–2.4
–3
–3.6
μA
I
PDT(PD)
PDT Pull-Down Current
V
PDT
= 1.3V
l
2.4
3
3.6
μA
t
DB, OFF
Turn-Off Interrupt Debounce Time
PB Falling
→ INT Falling
l
26
32
41
ms
t
PD,MIN
Internal PB Power-Down Debounce
Time (Note 4)
Time (Note 4)
PDT Pin Float, PB Falling
→ Enable Released
l
52
64
82
ms
t
PDT
Additional Adjustable PB
Power-Down Debounce Time
Power-Down Debounce Time
C
PDT
= 1500pF
l
9
11.5
13.5
ms
t
INT,MIN
Minimum
INT Pulse Width
INT Asserted
→ INT Released
l
26
32
41
ms
t
INT,MAX
Maximum
INT Pulse Width
C
PDT
= 1500pF,
INT Asserted → INT Released
l
35
43.5
54.5
ms
μP Handshake Pins (INT, KILL)
I
INT(LKG)
INT Leakage Current
V
INT
= 3V
l
±1
μA
V
INT(VOL)
INT Output Voltage Low
I
INT
= 3mA
l
0.11
0.4
V
V
KILL(TH)
KILL Input Threshold Voltage
KILL Falling
l
0.57
0.6
0.63
V
V
KILL(HYST)
KILL Input Threshold Hysteresis
l
10
30
50
mV
I
KILL(LKG)
KILL Leakage Current
V
KILL
= 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
t
KILL,ON BLANK
KILL Turn-On Blanking (Note 3)
KILL = Low, Enable Asserted
→ Enable Released
l
400
512
650
ms
ELECTRICAL CHARACTERISTICS