Datasheet > LM4962

LM4962

更新时间： 2024-01-19 13:15:02

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器
页数	文件大小	规格书
22页	1329K
描述
Ceramic Speaker Driver

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LM4962 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	FBGA, BGA20,4X5,20	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.54	商用集成电路类型：	AUDIO AMPLIFIER
JESD-30 代码：	R-PBGA-B20	JESD-609代码：	e1
湿度敏感等级：	1	功能数量：	1
端子数量：	20	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：	FBGA	封装等效代码：	BGA20,4X5,20
封装形状：	RECTANGULAR	封装形式：	GRID ARRAY, FINE PITCH
峰值回流温度（摄氏度）：	260	电源：	3/5 V
认证状态：	Not Qualified	子类别：	Audio/Video Amplifiers
最大压摆率：	12 mA	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
Base Number Matches：	1

LM4962 数据手册

January 2006

LM4962

Ceramic Speaker Driver

General Description

The LM4962 is an audio power amplifier primarily designed

for driving Ceramic Speaker for applications in Cell Phones,

Smart Phones, PDA’s and other portable applications. It is

capable of driving 15Vpp (typ) BTL with less than 1%

THD+N from a 3.2V_DCpower supply. The LM4962 features

and low power consumption shutdown mode, an internal

thermal shutdown protection mechanism, along with over

current protection (OCP) and over voltage protection (OVP).

Key Specifications

n Quiescent Power Supply Current (Boost Converter +

Amplifier)

9mA (typ)

n Voltage Swing in BTL at 1% THD, f=1KHz 15Vp-p (typ)

n Shutdown current

n OVP

0.1µA (typ)

8.5V V_AMP9.5V

Features

n Pop & click circuitry eliminates noise during turn-on and

turn-off transitions

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal number of

external components. The LM4962 does not require boot-

strap capacitors, or snubber circuits.

n Low current shutdown mode

n Low quiescent current

n Mono 15Vp-p BTL output, R_L= 2µF+9.4Ω, f = 1kHz, 1%

THD+N

n Over-current protection

n Over-Voltage Protection

n Unity-gain stable

The LM4962 also features a Band-Switch function which

allows the user to use one amplifier device for both receiver

(earpiece) mode and ringer/loudspeaker mode.

The LM4962 contains advanced pop & click circuitry that

eliminates noises which would otherwise occur during

turn-on and turn-off transitions. Additionally, the internal

boost converter features a soft-start function.

n External gain configuration capability

Including Band switch function

n Leakage cut switch (SW-LEAK)

n Soft-Start function

The LM4962 is unity-gain stable and can be configured by

external gain-setting resistors.

n Space-saving micro SMD package (2mm x 2.5mm)

Applications

n Smart phones

n Mobile Phones and Multimedia Terminals

n PDA’s, Internet Appliances, and Portable Gaming

n Portable DVD

n Digital still cameras/camcorders

Boomer^®is a registered trademark of National Semiconductor Corporation.

DS201422

www.national.com

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