MIC2589 Ver la hoja de datos (PDF) - Micrel

Número de pieza

componentes Descripción

Fabricante

MIC2589

Single-Channel, Negative High-Voltage Hot Swap Power Controller/Sequencer

Micrel 

Micrel

MIC2589/MIC2595

Pin Desription (cont.)

Pin Number

12

12

13

13

14

Pin Name

PWRGD2

(MIC25XX-1)

/PWRGD2

(MIC25XX-2)

PWRGD3

(MIC25XX-1)

/PWRGD3

(MIC25XX-2)

VDD

Pin Function

Power-Good Output 2: Asserted when the following is true: (PWRGD1 = Asserted)

AND (Time after Assertion of PWRGD1 = Time PWRGD2, as programmed by the

capacitor on PGTIMER). Once PWRGD1 is asserted, the PGTIMER pin begins to

charge and PWRGD2 will assert when PGTIMER crosses the PWRGD2 threshold

(VTHRESH(PG2) = 0.63V, typical). Also see PWRGD1 and PGTIMER pin descriptions

/Power-Good Output 2: Asserted when the following is true: (/PWRGD1 = Asserted)

AND (Time after Assertion of /PWRGD1 = Time /PWRGD2, as programmed by the

capacitor on PGTIMER). Once /PWRGD1 is asserted, the PGTIMER pin begins to

charge and /PWRGD2 will assert when PGTIMER crosses the /PWRGD2 threshold

(VTHRESH(PG2) = 0.63V, typical). Also see /PWRGD1 and PGTIMER pin descriptions.

Power-Good Output 3: Asserted when the following is true: (PWRGD1 = Asserted)

AND (Time after Assertion of PWRGD1 = Time PWRGD3, as programmed by the

capacitor on PGTIMER). Once PWRGD1 is asserted, the PGTIMER pin begins to

charge and PWRGD3 will assert when PGTIMER crosses the PWRGD3 threshold

(VTHRESH(PG3) = 1.15V, typical). Also see PWRGD1 and PGTIMER pin descriptions.

/Power-Good Output 3: Open Collector. Asserted when the following is true:

(/PWRGD1 = Asserted) AND (Time after Assertion of /PWRGD1 = Time /PWRGD3,

as programmed by the capacitor on PGTIMER). Once /PWRGD1 is asserted, the

PGTIMER pin begins to charge and /PWRGD3 will assert when PGTIMER crosses

the /PWRGD3 threshold (VTHRESH(PG3) = 1.15V, typical). Also see /PWRGD1 and

PGTIMER pin descriptions.

Positive Supply Input: Connect to the positive, or high side, terminal of the input

power supply.

December 2005

5

M9999-120505

(408) 955-1690

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