TPA6045A4CRHB

更新时间： 2024-09-17 07:04:43

品牌	Logo	应用领域
德州仪器 - TI		稳压器放大器功率放大器驱动
页数	文件大小	规格书
30页	1207K
描述
2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath™ STEREO HEADPHONE DRIVE AND REGULATOR

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TPA6045A4CRHB 数据手册

TPA6045A4C

www.ti.com.............................................................................................................................................................................................. SLOS614–OCTOBER 2008

2-W STEREO AUDIO POWER AMPLIFIER

WITH DirectPath™ STEREO HEADPHONE DRIVE AND REGULATOR

FEATURES

DESCRIPTION

•

Microsoft™ Windows Vista™ Compliant

•

Fully Differential Architecture and High PSRR

Provide Excellent RF Rectification Immunity

The TPA6045A4C is a stereo audio power amplifier

and DirectPath™ headphone amplifier in a thermally

enhanced, space-saving, 32-pin QFN package. The

speaker amplifier is capable of driving 2.1 W per

channel continuously into 4-Ω loads at 5 V. The

headphone amplifier achieves a minimum of 85 mW

at 1% THD+N from a 5-V supply. A built-in internal

4-step gain control for the speaker amplifier and a

fixed –1.5 V/V gain for the headphone amplifier

minimizes external components needed.

•

2.1-W, 1% THD+N Into 4-Ω Speakers and

85-mW, 1% THD+N Into 16-Ω Headphones

From 5-V Supply

•

DirectPath™ Headphone Amplifier Eliminates

(1)

Output Capacitors

Internal 4-Step Speaker Gain Control: 10, 12,

15.6, 21.6 dB and Fixed –1.5-V/V Headphone

Independent shutdown control and dedicated inputs

for the speaker and headphone allow the

•

3.3-V Low Dropout Regulator for CODEC

Independent Shutdown Controls for Speaker,

Headphone Amplifier, and Low Dropout

Regulator (LDO)

TPA6045A4C

simultaneously

drive

both

headphones and internal speakers. Differential inputs

to the speaker amplifiers offer superior power-supply

and common-mode noise rejection.

•

Output Short-Circuit and Thermal Protection

APPLICATIONS

•

Notebook Computers

•

Portable DVD

SIMPLIFIED APPLICATION CIRCUIT

TPA6045A4C

Speaker

LDO (V)

4.75

3.3

Gain (dB)

Enable

CODEC

ROUT+

ROUT–

SPKR_RIN+

SPKR_RIN–

SPKR

HPR

6, 10, 15.6,

21.6

TPA6040A4

TPA6041A4

TPA6043A4

TPA6045A4C

TPA6047A4

Active Low

LOUT+

LOUT–

HPL

10, 12, 15.6,

21.6

SPKR_LIN+

SPKR_LIN–

SPKL

Active Low

Active High

VDD

SPVDD

SPGND

4.5 V – 5.5 V

6, 10, 15.6,

21.6

BYPASS

3.3

GAIN0

GAIN1

Gain

Control

HP_EN

10, 12, 15.6,

21.6

Shutdown

Control

3.3

SPKR_EN

OUTL

OUTR

10, 12, 15.6,

21.6

HP_INR

SGND

4.75

HPVSS

CPVSS

HP_INL

HPVDD

CPVDD

VDD

3 V – 5.5 V

CPGND

C1P

C1N

4.5 V – 5.5 V

Regulator Enable

REG_EN

REG_OUT

3.3 V (To CODEC)

(1) US Patent Number 5289137

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

DirectPath, PowerPAD are trademarks of Texas Instruments.

Microsoft, Windows Vista are trademarks of Microsoft Corporation.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...30

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与TPA6045A4CRHB相关器件

型号	品牌	获取价格	描述	数据表
TPA6045A4CRHBR	TI	获取价格	2-W STEREO AUDIO POWER AMPLIFIER WITH DirectP
TPA6047A4	TI	获取价格	2-W STEREO AUDIO POWER AMPLIFIER WITH DirectP
TPA6047A4RHB	TI	获取价格	2.6W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC32, PLASTIC, QFN-32
TPA6047A4RHBR	TI	获取价格	具有 4.75V LDO、使能端高电平有效的 2W、立体声 AB 类扬声器和耳机放大器 \|
TPA6047A4RHBRG4	TI	获取价格	2W Stereo Audio Power Amplifier With DirectPath (TM) Stereo Headphone Drive and Regulator
TPA6047A4RHBT	TI	获取价格	2W Stereo Audio Power Amplifier With DirectPath (TM) Stereo Headphone Drive and Regulator
TPA60R070DFD	WUXI UNIGROUP	获取价格	超结功率 MOSFET（Super Junction MOSFET）是一种新型功率器件，采
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