MIC2546 Ver la hoja de datos (PDF) - Micrel

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componentes Descripción

Fabricante

MIC2546

Dual Programable Current Limit Switch

Micrel 

Micrel, Inc.

MIC2546/2547

Pin Description

Pin Number

1

2, 16

3

4, 10

5

6, 14

7

8, 11

9

12

13

15

Pin Name

INA

OUTA

ENA

NC

FLGA

GNDB,

GNDA

ILIMB

OUTB

INB

ENB

FLGB

ILIMA

Pin Function

Input A: Output A MOSFET drain. Also supplies internal circuitry.

Switch A (Output): Output A MOSFET source. Pins 2 and 16 must be externally

connected.

Enable A (Input): Logic-compatible enable input. Active- activelow (–2). High

input >1.7V typical; low input <1.5V typical. MIC2547 only: Also resets thermal

shutdown latch.

Not internally connected.

Fault Flag A (Output): Active-low, open-drain output. Indicates overcurrent or

thermal shutdown conditions. MIC2547 only: latched low on thermal shutdown.

Ground. Both pins must be connected to GND.

Current Limit Channel B: Sets current-limit threshold using an resistor, RSET,

connected to ground. 154Ω < RSET < 2.29kΩ.

Switch B (Output): Pins 8 and 11 must be externally connected.

Input B

Enable B (Input)

Fault Flag B (Output)

Fault Flag B (Output)

January 2008

3

M9999-012508-A

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