Datasheet > ft2011M

ft2011M

更新时间： 2024-11-09 01:05:59

品牌	Logo	应用领域
FANGTEK		/
页数	文件大小	规格书
21页	841K
描述
3W Low EMI Class-D Audio Power Amplifier with Auto-Recovering Short-Circuit Protection

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ft2011M 数据手册

ft2011

3W Low EMI Class-D Audio Power Amplifier

with Auto-Recovering Short-Circuit Protection

GENERAL DESCRIPTION

FEATURES



Filterless Class-D operation

The ft2011 is a high efficiency, low EMI, filterless,

Class-D audio amplifier with auto-recovering

short-circuit protection. It operates from 3V to

5.5V supply. When powered with 5V supply

voltage, the ft2011 is capable of delivering 3W

into a 4Ω load or 1.8W into an 8Ω load, with 10%

THD+N.

High efficiency up to 90%

Maximum output power at 5V supply

3.0W (4Ω load, 10% THD+N)

1.8W (8Ω load, 10% THD+N)



Maximum output power at 3.6V supply

1.5W (4Ω load, 10% THD+N)

As a Class-D audio amplifier, the ft2011 features

90% efficiency and 75dB PSRR at 217Hz which

make the device ideal for battery-powered

high-quality audio applications.

0.9W (8Ω load, 10% THD+N)

Low THD+N: 0.05%

(VDD=3.6V, f=1kHz, RL=8Ω, PO=0.5W)



Low quiescent current: 2mA @ VDD=3.6V

Low shutdown current < 0.1µA

High PSRR: 75dB @ 217Hz

One of the key benefits of the ft2011 over typical

Class-D audio power amplifiers is it generates

much less EMI emissions, thus greatly simplifying

the system design for portable applications. Also

included is the over-current and short-circuit

protection with auto-recovery, which ensures the

device be operated safely and reliably without the

need for system interaction.

No bypass capacitor required for the

common-mode bias



Under-voltage lockout

Auto-recovering over-current and

short-circuit protection



Thermal overload protection

Low EMI design

APPLICATIONS



Mobile Phones

Available in COL1.5x1.5-9L, SOP-8L,

MSOP-8L, and DFN2x2-8L packages

Portable Navigation Devices

Multimedia Internet Devices

Portable Speakers

APPLICATION CIRCUIT

To Battery

1uF

VDD/PVDD

ft2011

VDD/PVDD

ft2011

INN

Differential Input

INP

INN

INP

INN

INP

VON

Single-ended Input

VOP

SHDN

GND/PGND

SHDN

GND/PGND

OFF

Figure 1: Typical Audio Amplifier Application Circuit

JAN, 2013

www.fangtek.com.cn

12 3 4 5 6 7...21

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