MIC2589 Datasheet, PDF (4/17 Pages) Micrel Semiconductor – SINGLE-CHANNEL NEGATIVE HIGH VOLTAGE HOT SWAP POWER CONTROLLERS/SEQUENCERS

MIC2589/2595
Micrel
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_THRESH(PG2) = 0.63V, typical).
Also see PWRGD1 and PGTIMER pin descriptions.
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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_THRESH(PG2) = 0.63V, typical). Also see
/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_THRESH(PG3) = 1.15V, typical).
Also see PWRGD1 and PGTIMER pin descriptions.
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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_THRESH(PG3) = 1.15V,
typical). Also see /PWRGD1 and PGTIMER pin descriptions.
14
VDD
Positive Supply Input.
M9999-031504
4
March 2004