MIC2589 View Datasheet(PDF) - Micrel

Part Name

Description

Manufacturer

MIC2589

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

Micrel 

Micrel

MIC2589/MIC2595

Typical Applications

-48V RTN

(Long Pin)

*D1

SMAT70A

-48V RTN

(Short Pin)

R1

689k

1%

R2

11.8k

1%

CTIMER

0.068µF

MIC2589-2BM

1 /PWRGD1

VDD 14

2 PGTIMER /PWRGD3 13

3 UV

/PWRGD2 12

C4

100µF

C3

0.1µF

-48V RTN

(Long Pin)

C1

0.47µF

R3

12.4k

1%

CFILTER

2.2µF

CNLD

0.068µF

4 OV

5 CFILTER

6 CNLD

7 VEE

DRAIN 11

GATE 10

SENSE 9

N/C 8

*C2

0.1µF

C6

100µF

C5

0.1µF

R4

10

C8

100µF

C7

0.1µF

RSENSE

0.01

M1

SUM110N10-09

Nominal Undervoltage and Overvoltage Thresholds:

5%

VUV=36.5V

VOV=71.2V

Overcurrent TImer Delay

tFLT~=30ms

*Optional components (See Funtional Description and Applications Information for more details)

#An external pull-up resistor for the power-good signal is necessary for DC-DC convertors (and all other load modules) not equipped with an

internal pull-up impedance

-48V RTN

IN+ OUT+

ON/OFF*

IN– OUT–

+5VOUT

+5V RTN

IN+ OUT+

ON/OFF*

IN– OUT–

+2.5VOUT

+2.5V RTN

IN+ OUT+

ON/OFF*

IN– OUT–

+1.8VOUT

+1.8V RTN

December 2005

2

M9999-120505

(408) 955-1690

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