MAX98500EWE+T

更新时间： 2024-02-19 20:21:23

品牌	Logo	应用领域
美信 - MAXIM		放大器
页数	文件大小	规格书
15页	1655K
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MAX98500EWE+T 数据手册

19-5189; Rev 0; 5/10

Boosted 2.2W Class D Amplifier

with Automatic Level Control

General Description

Features

The MAX98500 is a high-efficiency, Class D audio ampli-

fier that features an integrated boost converter to deliver

a constant output power over a wide range of battery

supply voltages.

S Boosted Class D Output

S Integrated Automatic Level Control

S Output Power

2.2W into 8I, 10% THD+N

1.7W into 8I, 1% THD+N

The boost converter operates at 2MHz, requiring only a

small (2.2FH) external inductor and capacitor.

S Wide 2.5V to 5.5V Supply Voltage Range

S Undervoltage Lockout Protection

S High Total Efficiency of 87%

The automatic level control has a battery tracking func-

tion that reduces the output swing as the supply voltage

drops, preventing collapse of battery voltage.

S High Step-Up Switching Frequency (2MHz)

S Active Emission Limiting for Low EMI

The amplifier has differential inputs and an internal fully

differential design. The MAX98500 also features three

gain settings (6dB, 15.5dB, and 20dB) that are select-

able with a logic input.

The MAX98500 is available in a small, 0.5mm pitch

16-bump WLP package (2.1mm x 2.1mm). It is specified

over the extended -40NC to +85NC temperature range.

Ordering Information

Applications

Cell Phones

PART

TEMP RANGE

PIN-PACKAGE

Smartphones

MAX98500EWE+

-40NC to +85NC

16 WLP

+Denotes a lead(Pb)-free/RoHS-compliant package.

GPS Devices

Mobile Internet Devices

Active Speaker Accessories

Typical Application Circuit appears at end of data sheet.

Simplified Block Diagram

BATTERY

BAT

CCOUT

BOOST CONVERTER

SDBST

SDSPK

GAIN

MAX98500

CONTROL

A1 PVDD

RKNEE B3

B1 SPKP

C1 SPKN

INP D2

INN D3

DIFFERENTIAL

INPUT

OUTPUT

STAGE

GAIN

BSTPGND

D1, C2

SPKPGND

AGND

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...15

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