MIC2589/2595
Micrel
Pin Number
Pin Name
Pin Function
12
PWRGD2
(MIC2589-1)
(MIC2595-1)
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 change and PWRGD2 will assert when
PGTIMER crosses the PWRGD2 threshold (VTHRESH(PG2) = 0.63V, typical).
Also see PWRGD1 and PGTIMER pin descriptions.
12
13
13
14
/PWRGD2
(MIC2589-2)
(MIC2595-2)
/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 change and /PWRGD2 will assert when PGTIMER
crosses the /PWRGD2 threshold (VTHRESH(PG2) = 0.63V, typical). Also see
/PWRGD1 and PGTIMER pin descriptions.
PWRGD3
(MIC2589-1)
(MIC2595-1)
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 change and PWRGD3 will assert when
PGTIMER crosses the PWRGD3 threshold (VTHRESH(PG3) = 1.15V, typical).
Also see PWRGD1 and PGTIMER pin descriptions.
/PWRGD3
(MIC2589-2)
(MIC2595-2)
/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 change and /PWRGD3 will assert
when PGTIMER crosses the /PWRGD3 threshold (VTHRESH(PG3) = 1.15V,
typical). Also see /PWRGD1 and PGTIMER pin descriptions.
VDD
Positive Supply Input.
M9999-031504
4
March 2004
MICREL [ MICREL SEMICONDUCTOR ]
