TAS5631 datasheet(3/33 Pages) TI

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TAS5631

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SLES221C – JULY 2009 – REVISED APRIL 2010

MODE SELECTION PINS

MODE PINS

OUTPUT

PWM INPUT(1)

DESCRIPTION

CONFIGURATION

2 × BTL

AD mode

—

Reserved

2 × BTL

BD mode

1 × BTL +2 × SE

AD mode

4 × SE

AD mode

INPUT_C(2)

INPUT_D(2)

1 × PBTL

AD mode

BD mode

Reserved

(1)

The 1N and 2N naming convention is used to indicate the number of PWM lines to the power stage per channel in a specific mode.

(2)

INPUT_C and INPUT_D are used to select between a subset of AD and BD mode operations in PBTL mode.

PACKAGE HEAT DISSIPATION RATINGS

(1)

PARAMETER

TAS5631PHD

TAS5631DKD

RqJC (°C/W) – 2 BTL or 4 SE channels

2.63

RqJC (°C/W) – 1 BTL or 2 SE channel(s)

4.13

2.04

RqJC (°C/W) – 1 SE channel

6.45

3.45

Pad area (2)

64 mm2

80 mm2

(1)

RqJC is junction-to-case; RqCH is case-to-heatsink.

(2)

RqCH is an important consideration. Assume a 2-mil (0.051-mm) thickness of thermal grease with a thermal conductivity of 2.5 W/mK

between the pad area and the heat sink and both channels active. The RqCH with this condition is 1.1°C/W for the PHD package and

0.44°C/W for the DKD package.

Table 1. ORDERING INFORMATION(1)

PACKAGE

DESCRIPTION

0°C–70°C

TAS5631PHD

64-pin HTQFP

0°C–70°C

TAS5631DKD

44-pin PSOP3

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

Web site at www.ti.com.

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