MIC2005-0.5YM6TR Ver la hoja de datos (PDF) - Micrel

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MIC2005-0.5YM6TR

Fixed and Adjustable Current Limiting Power Distribution Switches

Micrel 

Micrel, Inc.

MIC20XX Family

Descriptions

These pin and signal descriptions aid in the differentiation of a pin from electrical signals and components connected to

that pin. For example, VOUT is the switch’s output pin, while VOUT is the electrical signal output voltage present at the

VOUT pin.

Pin Descriptions

Pin Name

Type

VIN

Input

GND

─

ENABLE

Input

FAULT/

Output

CSLEW

VOUT

Input

Output

VUVLO

Input

ILIMIT

Input

Description

Supply input. This pin provides power to both the output switch and the switch’s

internal control circuitry.

Ground.

Switch Enable (Input):

Fault status. A logic LOW on this pin indicates the switch is in current limiting, or has

been shut down by the thermal protection circuit. This is an open-drain output

allowing logical OR’ing of multiple switches.

Slew rate control. Adding a small value capacitor between this pin and VIN slows

turn-ON of the power FET.

Switch output. The load being driven by the switch is connected to this pin.

Variable Under Voltage Lockout (VUVLO): Monitors the input voltage through a

resistor divider between VIN and GND. Shuts the switch off if voltage falls below the

threshold set by the resistor divider. Previously called VUVLO.

Set current limit threshold via a resistor connected from ILIMIT to GND.

Signal Descriptions

Signal Name

Type

VIN

Input

GND

─

Description

Electrical signal input voltage present at the VIN pin.

Ground.

VEN

VFAULT/

CSLEW

VOUT

VVUVLO_TH

CLOAD

IOUT

ILIMIT

Input

Electrical signal input voltage present at the ENABLE pin.

Output

Electrical signal output voltage present at the FAULT/ pin.

Component Capacitance value connected to the CSLEW pin.

Output

Internal

Component

Electrical signal output voltage present at the VOUT pin.

VUVLO internal reference threshold voltage. This voltage is compared to the

VUVLO pin input voltage to determine if the switch should be disabled. Reference

threshold voltage has a typical value of 250mV.

Capacitance value connected in parallel with the load. Load capacitance.

Output

Electrical signal output current present at the VOUT pin.

Internal Switch’s current limit. Fixed at factory or user adjustable.

January 2009

9

M9999-012109-A

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