參數(shù)資料
型號(hào)： LTC2924
廠商： Linear Technology Corporation
英文描述： Quad Power Supply Sequencer
中文描述： 四路電源排序器
文件頁數(shù)： 3/16頁
文件大小： 190K
代理商： LTC2924
LTC2924
3
2924f
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 3V to 6V, unless otherwise noted.
SYMBOL
PARAMETER
TMR Characteristics
I
TMR
Timer Pin Output Current
V
TH(HI)
Timer High Voltage Threshold
PGT Characteristics
I
PGT
Power Good Timer Pin Output Current
V
PGT
Power Good Timer Fault Detected Voltage Threshold
DONE Characteristics
R
D(LO)
DONE Pin Pull-Down Resistance to GND
I
D(HI)
DONE Pin Off Leakage Current
FAULT Characteristics
R
FAULT (LO)
FAULT Pin Pull-Down Resistance to GND
ELECTRICAL CHARACTERISTICS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Hysteresis current must be 500nA minimum. Hysteresis current
may exceed 50
μ
A, but accuracy is not guaranteed.
Note 3:
HYS/CFG pin must be pulled to GND or V
CC
with an external
resistor. See Applications Information for details.
Note 4:
Determined by design, not production tested. External circuits
pulling down on the FAULT pin must maintain the signal below V
FAULT(LO)
for
≥
1
μ
s.
Note 5:
Internal circuits may drive the OUTnpins higher than the Absolute
Maximum Ratings.
TYPICAL PERFOR U
I
CC
vs V
CC
V
CC
(V)
3
2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
4.5
5.5
2924 G01
3.5
4
5
6
I
C
I
OUT1-4
= –10
μ
A
R
HYS
= 51k
ON HIGH
ON LOW
I
OUT
(
μ
A)
0
14
12
10
8
6
4
2
0
6
10
2924 G02
2
4
8
12
V
O
V
CC
= 6V
ONE OUTPUT DRIVING CURRENT
V
CC
= 3V
V
CC
(V)
2
V
O
9
10
6
2924 G03
8
7
3
4
5
12
11
I
OUT1-4
< 1
μ
A
V
OUT(EN)
vs I
OUT
V
OUT(EN)
vs V
CC
CONDITIONS
MIN
TYP
MAX
UNITS
Timer On V
TMR
≤
0.9V
V
CC
= 5V
●
4
5
1
6
μ
A
V
0.93
1.07
Power Good Timer On, V
PGT
≤
0.9V
V
CC
= 5V
●
4
5
1
6
μ
A
V
0.93
1.07
DONE = Low, I = 2mA
DONE = High
●
100
15
μ
A
●
FAULT Being Pulled Low Internally,
I = 2mA
FAULT High
●
400
I
FAULT(HI)
V
FAULT(HI)
FAULT Pin Off Leakage Current
Voltage Above Which an Externally Generated
FAULT Condition Will Not be Detected
Voltage Below Which an Externally Generated
FAULT Condition Will be Detected
External Pull-Up Resistance
Externally Commanded FAULT Below V
FAULT(LO)
to OUT1-OUT4 Pull-Down On Delay
Externally Commanded FAULT Minimum Time
Below V
FAULT(LO)
●
2
μ
A
V
●
1.6
V
FAULT(LO)
●
0.6
V
R
F(EXT)
t
FAULT
●
10
k
μ
s
●
1
t
FAULT(MIN)
(Note 4)
1
μ
s
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