MIC2582-JYM(2014) 查看數據表（PDF） - Micrel
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MIC2582-JYM Datasheet PDF : 27 Pages
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Micrel, Inc.
Ordering Information
Part Number
MIC2582-xYM
MIC2583-xYQS
MIC2583R-xYQS
Note:
1. Contact factory for availability.
Pin Configuration
MIC2582/MIC5283
Fast Circuit Breaker Threshold
x = J, 100mV
x = J1, Off
x = M, Off
x = J, 100mV
x = K(1), 150mV
x = L(1), 200mV
x = M(1), Off
x = J, 100mV
x = K(1), 150mV
x = L(1), 200mV
x = M(1), Off
Circuit Breaker
Latched off
Latched off
Auto-retry
Package
8-pin SOIC
16-pin QSOP
16-pin QSOP
8-Pin SOIC (M)
16-Pin QSOP (QS)
Pin Description
Pin Number Pin Number
8-Pin SOIC 16-Pin QSOP
1
1
2
3
Pin Name
/POR
ON
Pin Function
Power-on-Reset output: Open drain N-channel device, active low. This pin
remains asserted during start-up until a time period (tPOR) after the FB pin
voltage rises above the power good threshold (VFB). The timing capacitor CPOR
determines tPOR. When the output voltage monitored at the FB pin falls below
VFB, /POR is asserted for a minimum of one timing cycle (tPOR). The /POR pin
requires a pull-up resistor (10kΩ minimum) to VCC.
ON input: Active high. The ON pin is an input to a Schmitt-triggered comparator
used to enable/disable the controller, is compared to a 1.24V reference with
50mV of hysteresis. When a logic high is applied to the ON pin (VON > 1.24V), a
start-up sequence begins and the GATE pin starts ramping up towards its final
operating voltage. When the ON pin receives a logic low signal (VON < 1.19V),
the GATE pin is grounded and /FAULT remains high if VCC is above the UVLO
threshold. ON must be low for at least 20µs after VCC is above the UVLO
threshold in order to initiate a start-up sequence. Additionally, toggling the ON
pin LOW to HIGH resets the circuit breaker.
May 23, 2014
2
Revision 5.0
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