MIC2589/2595

Micrel

M9999-031504

4

March 2004

Pin Number

Pin Name

Pin Function

12

PWRGD2

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

(MIC2589-1)

Asserted) AND (Time after Assertion of PWRGD1 = Time PWRGD2, as

(MIC2595-1)

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

the PGTIMER pin begins to change and PWRGD2 will assert when

PGTIMER crosses the PWRGD2 threshold (V

Also see PWRGD1 and PGTIMER pin descriptions.

12

/PWRGD2

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

(MIC2589-2)

Asserted) AND (Time after Assertion of /PWRGD1 = Time /PWRGD2, as

(MIC2595-2)

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

PGTIMER pin begins to change and /PWRGD2 will assert when PGTIMER

crosses the /PWRGD2 threshold (V

/PWRGD1 and PGTIMER pin descriptions.

13

PWRGD3

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

(MIC2589-1)

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

(MIC2595-1)

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

the PGTIMER pin begins to change and PWRGD3 will assert when

PGTIMER crosses the PWRGD3 threshold (V

Also see PWRGD1 and PGTIMER pin descriptions.

13

/PWRGD3

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

(MIC2589-2)

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

(MIC2595-2)

/PWRGD3, as programmed by the capacitor on PGTIMER). Once /PWRGD1

is asserted, the PGTIMER pin begins to change and /PWRGD3 will assert

when PGTIMER crosses the /PWRGD3 threshold (V

typical). Also see /PWRGD1 and PGTIMER pin descriptions.

14

VDD

Positive Supply Input.