Datasheet

LTC2924
4
2924fb
elecTrical characTerisTics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Hysteresis current must be 500nA minimum. Hysteresis current
may exceed 50µA, 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.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DONE Characteristics
R
D(LO)
DONE Pin Pull-Down Resistance to GND DONE = Low, I = 2mA
l
100
Ω
I
D(HI)
DONE Pin Off Leakage Current DONE = High
l
15 µA
FAULT Characteristics
R
FAULT (LO)
FAULT Pin Pull-Down Resistance to GND FAULT Being Pulled Low Internally,
I = 2mA
l
400
Ω
I
FAULT(HI)
FAULT Pin Off Leakage Current FAULT High
l
2 µA
V
FAULT(HI)
Voltage Above Which an Externally Generated
FAULT Condition Will Not be Detected
l
1.6 V
V
FAULT(LO)
Voltage Below Which an Externally Generated
l
0.6 V
FAULT Condition Will be Detected
R
F(EXT)
External Pull-Up Resistance
l
10
kΩ
t
FAULT
Externally Commanded FAULT Below V
FAULT(LO)
to OUT1-OUT4 Pull-Down On Delay
l
1 µs
t
FAULT(MIN)
Externally Commanded FAULT Minimum Time
Below V
FAULT(LO
)
(Note 4) 1 µs
The l 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.
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 ≥1µs.
Note 5: Internal circuits may drive the OUTn pins higher than the Absolute
Maximum Ratings.
Note 6: R
IN
is the parallel combination of the two resistors forming the
resistive divider connected to the ON and IN1-IN4 pins.