MIC2546/2547

Micrel

MIC2546/2547

2

June 2000

Pin Configuration

1

INA

OUTA

ENA

NC

FLGA

GNDB

ILIMB

OUTB

16 OUTA

ILIMA

GNDA

FLGB

ENB

OUTB

NC

INB

15

14

13

12

11

10

9

2

3

4

5

6

7

8

MIC2546/2547

16-Pin SOP (M)

16-Pin TSSOP (TS)

Ordering Information

Part Number

Enable

Latch*

Temperature Range

Package

MIC2546-1BM

Active High

–40

°C to +85°C

16-pin SOP

MIC2546-1BTS

Active High

–40

°C to +85°C

16-pin TSSOP

MIC2546-2BM

Active Low

–40

°C to +85°C

16-pin SOP

MIC2546-2BTS

Active Low

–40

°C to +85°C

16-pin TSSOP

MIC2547-1BM

Active High

•–40

°C to +85°C

16-pin SOP

MIC2547-1BTS

Active High

•–40

°C to +85°C

16-pin TSSOP

MIC2547-2BM

Active Low

•–40

°C to +85°C

16-pin SOP

MIC2547-2BTS

Active Low

•–40

°C to +85°C

16-pin TSSOP

* Thermal Shutdown Latch

LOGIC,

CHARGE

PUMP

(OUTA)

(INA)

(ENA)

(FLGA)

MIC2546/2547

(ILIMA)

LOGIC,

CHARGE

PUMP

(OUTB)

(INB)

(ENB)

(FLGB)

(ILIMB) (GND)

Functional Pinout

Pin Description

Pin Number

Pin Name

Pin Function

1

INA

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

2, 16

OUTA

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

externally connected.

3

ENA

Enable A (Input): Logic-compatible enable input. Active-high (–1) or active-

low (–2). High input >1.7V typical; low input <1.5V typical. Do not float.

MIC2547 only: Also resets thermal shutdown latch.

4, 10

NC

Not internally connected.

5

FLGA

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

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

shutdown.

6, 14

GNDB, GNDA

Ground. Both pins must be connected to GND.

7

ILIMB

Current Limit Channel B: Sets current-limit threshold using an external

resistor, R

8, 11

OUTB

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

9

INB

Input B

12

ENB

Enable B (Input)

13

FLGB

Fault Flag B (Output)

15

ILIMA

Current Limit Channel A.