Micrel

MIC2586/MIC2586R

October 2004

5

M9999-102204

(408) 955-1690

Pin Number

Pin Name

Pin Function

13

SENSE

Circuit Breaker Sense Input: This pin is the (-) Kelvin sense connection for the

pin sets the circuit breaker’s current limit trip point.

When the current limit

detector circuit is enabled (as well as the current limit timer), while the FB pin

into the load. When the FB pin voltage is less than

≅0.8V, the voltage across the

sense resistor decreases linearly to a minimum of 12mV (typical) when the FB

pin voltage is at 0V.

To disable the circuit breaker (and defeat all current limit protections), the

SENSE pin and the VCC pin can be tied together.

14

VCC

Positive Supply Voltage Input: This pin is the (+) Kelvin sense connection for the

output supply rail. The nominal operating voltage range for the MIC2586 and the

MIC2586R is +10V to +80V, and VCC can withstand input transients up to

+100V.

An undervoltage lockout circuit holds the GATE pin low whenever the