MIC2582/MIC2583

Micrel

MIC2582/MIC2583

4

April 2003

Pin Name

8-pin SOIC

16-pin QSOP

Pin Function

PWRGD

N/A

2

Power-Good Output: Open drain N-channel device, Active High. When the

voltage at the FB pin is lower than 1.24V, PWRGD output is held low. When

the voltage at the FB pin exceeds 1.24V, then PWRGD is asserted immediately.

The PWRGD pin requires a pull-up resistor (10k

Ω minimum) to VCC.

CFILTER

N/A

5

Current Limit Response Timer: A capacitor connected to this pin defines the

period of time (t

fault condition and trip the circuit breaker. If no capacitor is connected, then

t

/FAULT

N/A

11

Circuit Breaker Fault Status Output: Open drain N-channel device, Active

Low. The /FAULT pin is asserted when the circuit breaker trips due to an

overcurrent condition or when an undervoltage lockout condition exists. The

/FAULT pin requires a pull-up resistor (10k

Ω minimum) to VCC.

DIS

N/A

13

Discharge Output: When the MIC2583/83R is turned off, a 500

Ω internal

resistor at this output allows the discharging of any load capacitance to ground.

NC

N/A

6,9,10

No internal connection.