FT2925 2*6W 双声道功放IC
更新时间：2015-12-01 10:47:32 信息编号：4097664 发布者IP：183.12.167.159 浏览：1074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10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
- 让卖家联系我
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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