LTC4231

4

Rev. B

For more information www.analog.com

l

denotes the specifications which apply over the full operating

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

UVL, UVH, OV, GNDSW, STATUS and SHDN

UVL, UVH Threshold

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0.776 0.795 0.814

V

OV Threshold

OV Rising

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0.776 0.795 0.814

V

OV Hysteresis

l

3

15

30

mV

UVL, UVH and OV Leakage Current

V = 0.9V (C-Grade, I-Grade)

(H-Grade)

l

l

0

0

±10

±100

nA

nA

UVL, UVH, OV, GNDSW, STATUS and

SHDN Leakage Current

V = 12V (C-Grade, I-Grade)

(H-Grade)

l

l

0

0

±100

±500

nA

nA

Switch Resistance

l

80

200

Ω

STATUS Output Low Voltage

I = 2mA

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0.2

0.4

V

SHDN Input Threshold

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0.4

0.8

1.5

V

Sampling Period

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5

10

15

ms

Sampling Width

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100

200

300

µs

TIMER

Circuit Breaker Delay

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1.7

2.4

3.5

ms

TIMER High Threshold

TIMER Rising

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1.170 1.193 1.216

V

TIMER Low Threshold

TIMER Falling

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0.07

0.1

0.13

V

TIMER Pull-Up Current

TIMER = 0.5V, Circuit Breaker Tripped

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–35

–50

–65

µA

TIMER Pull-Down Current

TIMER = 0.5V, Circuit Breaker Recovery

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3

5

7

µA

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: All currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to GND unless otherwise

specified.

Note 3: These pins can be tied to voltages below –0.3V through a

resistance that limits the current below 1mA.

Note 4: An internal clamp limits GATE to a minimum of 13V above

SOURCE. Driving this pin to voltages beyond this clamp may damage the

device.