MIC4605 datasheet(9/34 Pages) MICROCHIP

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 2018-2019 Microchip Technology Inc.

DS20005853E-page 9

MIC4605

3.0

PIN DESCRIPTIONS

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

TABLE 3-1:

PIN FUNCTION TABLE

Pin Number

MIC4605-1

TDFN

Pin Number

MIC4605-2

TDFN

Pin Number

MIC4605-1

SOIC

Pin Number

MIC4605-2

SOIC

Name

Description

—

Enable Input. Logic high on the enable pin results

in normal operation; conversely, the device enters

Shutdown mode with a logic low applied to

enable.

VDD Input Supply for Gate Drivers. Decouple this pin

to VSS with a > 0.1 µF capacitor.

High-Side Bootstrap Supply. An external bootstrap

capacitor is required. Connect the bootstrap

capacitor across this pin and HS. An on-board

bootstrap diode is connected from VDD to HB.

High-Side Drive Output. Connect to the gate of

the external high-side power MOSFET.

High-Side Drive Reference Connection. Connect

to source of the external high-side power

MOSFET. Connect the bottom of bootstrap

capacitor to this pin.

—

High-Side Drive Input.

—

PWM Single PWM Input. Drives both the high-side and

low-side outputs out of phase.

—

Low-Side Drive Input.

—

No Connect. This pin is not connected internally.

VSS

Driver Reference Supply Input. Generally

connected to the power ground of external circuitry.

Low-Side Drive Output. Connect to the gate of the

external low-side power MOSFET.

—

No Connect. This pin is not connected internally.

—

ePAD Exposed Pad. Connect to VSS.

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