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LM48557TLX PDF预览

LM48557TLX

更新时间: 2024-02-10 15:27:10
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器音频控制集成电路消费电路商用集成电路
页数 文件大小 规格书
24页 592K
描述
Mono, Bridge-Tied Load, Ceramic Speaker Driver with I2C Volume Control and Reset

LM48557TLX 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active包装说明:VFBGA, BGA16,4X4,20
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01Factory Lead Time:6 weeks
风险等级:5.15商用集成电路类型:VOLUME CONTROL CIRCUIT
JESD-30 代码:S-PBGA-B16JESD-609代码:e1
长度:1.96 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:VFBGA封装等效代码:BGA16,4X4,20
封装形状:SQUARE封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):260电源:1.7/4.5,4.2 V
认证状态:Not Qualified座面最大高度:0.395 mm
子类别:Audio/Video Amplifiers最大压摆率:8 mA
最大供电电压 (Vsup):4.5 V最小供电电压 (Vsup):2.7 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:Tin/Silver/Copper (Sn/Ag/Cu)端子形式:BALL
端子节距:0.5 mm端子位置:BOTTOM
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:1.96 mm
Base Number Matches:1

LM48557TLX 数据手册

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August 6, 2009  
LM48557  
Mono, Bridge-Tied Load, Ceramic Speaker Driver with I2C  
Volume Control and Reset  
General Description  
Key Specifications  
The LM48557 is a single supply, mono, ceramic speaker driv-  
er with an integrated charge-pump, designed for portable  
devices, such as cell phones and portable media players,  
where board space is at a premium. The LM48557 charge  
pump allows the device to deliver 5.8VRMS from a single 4.2V  
supply.  
■ꢀOutput Voltage at VDD = 4.2V  
RL = 1µF +22, THD+N 1%  
5.8VRMS (typ)  
■ꢀQuiescent Power Supply Current  
at 4.2V  
5mA (typ)  
80dB (typ)  
■ꢀPSRR at 217Hz  
■ꢀShutdown current  
The LM48557 features high power supply rejection ratio  
(PSRR), 80dB at 217Hz, allowing the device to operate in  
noisy environments without additional power supply condi-  
tioning. Flexible power supply requirements allow operation  
from 2.7V to 4.5V. The LM48557 features an active low reset  
input that reverts the device to its default state. Additionally,  
the LM48557 features a 36-step I2C volume control and mute  
function. The low power Shutdown mode reduces supply cur-  
rent consumption to 0.01µA.  
0.01μA (typ)  
Features  
Integrated Charge Pump  
Bridge-tied Load Output  
Differential Input  
High PSRR  
I2C Volume and Mode Control  
The LM48557’s superior click and pop suppression elimi-  
nates audible transients on power-up/down and during shut-  
down. The LM48557 is available in an ultra-small 16-bump  
micro SMD package (1.965mmx1.965mm).  
Reset Input  
Advanced Click-and-Pop Suppression  
Low Supply Current  
Minimum external components  
Micro-power shutdown  
Available in space-saving 16-bump micro SMD package  
Applications  
Mobile phones  
PDAs  
Notebook Electronic Devices  
MP3 Players  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2009 National Semiconductor Corporation  
300981  
www.national.com  

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