MCP1403-ESLASHP datasheet(9/22 Pages) MICROCHIP

9 / 22 page

DS22022B-page 9

MCP1403/4/5

3.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1:

PIN FUNCTION TABLE (1)

3.1

Supply Input (VDD)

VDD is the bias supply input for the MOSFET driver and

has a voltage range of 4.5V to 18V. This input must be

decoupled to ground with a local capacitor. This bypass

capacitor provides a localized low-impedance path for

the peak currents that are to be provided to the load.

3.2

Control Inputs A and B

The MOSFET driver input is a high-impedance, TTL/

CMOS-compatible input. The input also has hysteresis

between the high and low input levels, allowing them to

be driven from slow rising and falling signals, and to

provide noise immunity.

3.3

Ground (GND)

Ground is the device return pin. The ground pin should

have a low impedance connection to the bias supply

source return. High peak currents will flow out the

ground pin when the capacitive load is being

discharged.

3.4

Outputs A and B

Outputs A and B are CMOS push-pull output that is

capable of sourcing and sinking 4.5A of peak current

(VDD = 18V). The low output impedance ensures the

gate of the external MOSFET will stay in the intended

state even during large transients. These output also

has a reverse current latch-up rating of 1.5A.

3.5

Exposed Metal Pad

The exposed metal pad of the DFN package is not

internally connected to any potential. Therefore, this

pad can be connected to a ground plane or other

copper plane on a printed circuit board to aid in heat

removal from the package.

8-Pin

PDIP

SOIC

8-Pin

DFN

16-Pin

SOIC

Symbol

Description

No Connection

IN A

Control Input for Output A

—

No Connection

GND

Ground

—

GND

Ground

—

No Connection

IN B

Control Input for Output B

—

No Connection

—

No Connection

OUT B

Output B

—

OUT B

Output B

VDD

Supply Input

——

VDD

Supply Input

OUT A

Output A

—

OUT A

Output A

No Connection

—

PAD

—

Exposed Metal Pad

Note 1: Duplicate pins must be connected for proper operation.

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