Datasheet > LM4961LQ

LM4961LQ

更新时间： 2024-01-17 09:44:09

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
16页	506K
描述
Ceramic Speaker Driver

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技术参数
数据手册

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LM4961LQ 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	QCCN, LCC28,.2SQ,20	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.58	商用集成电路类型：	AUDIO AMPLIFIER
JESD-30 代码：	S-PQCC-N28	JESD-609代码：	e3
湿度敏感等级：	1	功能数量：	1
端子数量：	28	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：	QCCN	封装等效代码：	LCC28,.2SQ,20
封装形状：	SQUARE	封装形式：	CHIP CARRIER
峰值回流温度（摄氏度）：	260	电源：	3.2/4.2 V
认证状态：	Not Qualified	子类别：	Audio/Video Amplifiers
最大压摆率：	15 mA	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

LM4961LQ 数据手册

October 2004

LM4961

Ceramic Speaker Driver

General Description

The LM4961 is an audio power amplifier primarily designed

for driving Ceramic Speaker for applications in Cell Phone

and PDAs. It integrates a boost converter, with variable

output voltage, with an audio power amplifier. It is capable of

driving 15V_p-pin BTL mode to 2uF+ 30 ohms load, continu-

ous average power, with less than 1% distortion (THD+N)

from a 3.2V_DCpower supply.

Key Specifications

n Quiescent Power Supply Current

n Voltage Swing in BTL at 1% THD

n Shutdown current

7mA (typ)

15Vp-p (typ)

0.1µA (typ)

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 LM4961 does not require boot-

strap capacitors, or snubber circuits therefore it is ideally

suited for portable applications requiring high voltage output

to drive capacitive loads like Ceramic Speakers. The

LM4961 features a low-power consumption shutdown mode.

Additionally, the LM4961 features an internal thermal shut-

down protection mechanism.

n Low current shutdown mode

n Low quiescent current

n Mono 15Vp-p BTL output, R_L= 2µF+30Ω, f = 1kHz

n Thermal shutdown protection

n Unity-gain stable

n External gain configuration capability

Including Band exchange SW

n Including Leakage cut SW

The LM4961 contains advanced pop & click circuitry that

eliminates noises which would otherwise occur during

turn-on and turn-off transitions.

Applications

n Cellphone

n PDA

The LM4961 is unity-gain stable and can be configured by

external gain-setting resistors.

Connection Diagram

LM4961LQ (5x5)

20094084

Top View

Order Number LM4XXX

See NS Package Number

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

DS200940

www.national.com

12 3 4 5 6 7...16

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