FT2925 2*6W 双声道功放IC

更新：2015-12-01 10:47 编号：4097664 IP：183.12.167.159 浏览：1096次

供应商: 深圳市联盈首锐科技有限公司 商铺
认证: 资质核验：
已通过营业执照认证

入驻顺企：
第
11
年

主体名称：
深圳市联盈首锐科技有限公司

组织机构代码：
440301103161056
报价: 人民币￥.01元每个
品牌: 方泰
型号: FT2925
所在地: 深圳市宝安区西乡街道宝安互联网产业基地海滨新村18栋二楼2012
联系电话: 0755-89814686
联系人: 冯小姐 请说明来自顺企网，优惠更多

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产品详细介绍

GENERAL DESCRIPTION

The ft2925 is a highly efficient 6W boosted Class-G

stereo audio power amplifier with automatic level

control (ALC) and battery tracking AGC. It integrates

dual filterless Class-D audio amplifiers with an adaptive

Class-G boost regulator and operates with a wide

range of supply voltages from 3V to 5.5V. When

operating with 3.6V supply voltage, it can deliver into a

pair of 4Ω speakers at a maximum output power of 6W

per channel with 10% THD+N, or 4.8W per channel

with 1% THD+N.

In ft2925, the power supply rail of the audio amplifier’s

output stages is internally boosted by a synchronous

PWM switching regulator with two integrated power

switches. The boost regulator employs current mode

PWM control with proprietary multi-level Class-G

operation to regulate the boosted voltage in response

to the level of audio inputs.

The ft2925 features ALC function to constantly monitor

audio outputs against the supply voltage applied to the

audio amplifier’s output stage, thus safeguarding

against output clipping distortion, excessive power

dissipation, and speaker over-load. Once an over-level

condition is detected in either channel, the ALC lowers

the voltage gain of both audio amplifiers proportionally

to eliminate output clipping. In ALC mode, with 3.6V

supply voltage, the ft2925 can deliver 4.5W per channel

into a pair of 4Ω speakers with 0.3% THD+N.

In conjunction with ALC, the battery tracking AGC

lowers the voltage gain of the audio amplifiers to limit

the maximum audio outputs as the battery supply

voltage drops below a prescribed value, preventing the

collapse of battery voltage.

FEATURES

 Wide supply voltage range from 3V to 5.5V

 Filterless Class-D audio amplifier integrated with a

multi-level Class-G synchronous boost regulator

 Automatic level control

 Battery tracking AGC

 Soft drive mode for EMI reduction

 Maximum output power in Non-ALC mode

(VBAT=3.6V, ALC=High, 10% THD+N)

6.0W/Ch (4Ω load)

3.4W/Ch (8Ω load)

 ALC output power in ALC Mode

(VBAT=3.6V, ALC=Low, 0.3% THD+N)

4.5W/Ch (4Ω load)

2.6W/Ch (8Ω load)

 Wide ALC dynamic range: 12dB

 Maximum voltage gain: 30dB

 High efficiency up to 76%

 Volume fade-in and fade-out

 Under-voltage lockout protection

 Auto-recovering over-current & short-circuit

protection

 Thermal over-load protection

 Available in TSSOP-28L package

APPLICATIONS

 Blue Tooth Speakers

 Performance Audio Speakers

 Consumer Electronics

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