Linear Technology LTC2924 Quad Supply Sequencer DC818A DC818A Fiche De Données

LTC2924

4

2924fb

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. 

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 

k

Ω 

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

l

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.