MIC2582/MIC2583
Pin Name
PWRGD
8-pin SOIC
N/A
16-pin QSOP
2
Pin Function
Micrel
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 (10kΩ minimum) to VCC.
Current Limit Response Timer: A capacitor connected to this pin defines the
period of time (t
OCSLOW
) in which an overcurrent event must last to signal a
fault condition and trip the circuit breaker. If no capacitor is connected, then
t
OCSLOW
defaults to 5µs.
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 (10kΩ minimum) to VCC.
Discharge Output: When the MIC2583/83R is turned off, a 500Ω internal
resistor at this output allows the discharging of any load capacitance to ground.
No internal connection.
CFILTER
N/A
5
/FAULT
N/A
11
DIS
NC
N/A
N/A
13
6,9,10
MIC2582/MIC2583
4
April 2003
MICREL [ MICREL SEMICONDUCTOR ]
