MIC2582_09 Datasheet, PDF (4/25 Pages) Micrel Semiconductor – Single Channel Hot Swap Controllers

Micrel, Inc.
MIC2582/MIC2583
Pin Number
8-Pin SOIC
n/a
Pin Number
16-Pin QSOP
2
n/a
5
n/a
11
n/a
13
n/a
6, 9, 10
Pin Name
PWRGD
CFILTER
/FAULT
DIS
NC
Pin Name
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 over current 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 over current
condition or when an under-voltage 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.
April 2009
4
M9999-043009-C