SMH4804 Datasheet, PDF(16/41 Page) Summit Microelectronics, Inc. – -48V Programmable Hot Swap Sequencing Power Controller

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SMH4804 Datasheet, PDF (16/41 Pages) Summit Microelectronics, Inc. – -48V Programmable Hot Swap Sequencing Power Controller

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AC Operating Characteristics

AC OPERATING CHARACTERISTICS

SMH4804

(Over recommended operating conditions, unless otherwise notes. All voltages are relative to GND.)

Symbol

Description

tCBD Programmable Over-Current Filter

tPGD

Programmable power good delay

(PG1 â PG2, PG2 â PG3, PG3 â

PG4)

tQTSD

tCYC

Quick-Trip shutdown

Circuit breaker cycle mode cycle

time

tCBRST CBRESET pulse width

tPUVF Programmable under-voltage filter

tPDD Programmable pin detect

1. Indicates default value

Conditions

tCBD = 5 Âµs

tCBD = 50 Âµs1

tCBD = 150 Âµs

tCBD = 400 Âµs

tPGD = 50 Âµs

tPGD = 250 Âµs

tPGD = 500 Âµs

tPGD = 1000 Âµs

tPGD = 5 ms1

tPGD = 20 ms

tPGD = 80 ms

tPGD = 160 ms

tCYC = 2.5 s1

tCYC = 5 s

tPUVF = Off1

tPUVF = 5 ms

tPUVF = 80 ms

tPUVF = 160 ms

tPDD = 0.5 ms

tPDD = 5 ms

tPDD = 80 ms1

tPDD = 160 ms

Min

Typ

Max Unit

Comment

Âµs

See Figure 5,

-25

tCBD +25

Âµs

Figure 6,

Figure 7, and

Figure 13

Âµs

-25 tPGD +25

See Figure 4

200

ns See Figure 7

-25 tCYC +25

See Figure 5

200

ns See Figure 6

-25 tPUVF +25

-25

tPDD +25

See Figure 6

and Figure 13

2050 3.7 10/30/02

Summit Microelectronics

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