Datasheet > LP3947ISD-51

LP3947ISD-51

更新时间： 2024-11-15 20:33:47

品牌	Logo	应用领域
美国国家半导体 - NSC		光电二极管
页数	文件大小	规格书
14页	637K
描述
IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14, LLP-14, Power Management Circuit

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技术参数
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LP3947ISD-51 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	LLP-14	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.15	可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	R-PDSO-N14
JESD-609代码：	e0	长度：	4 mm
湿度敏感等级：	1	信道数量：	1
功能数量：	1	端子数量：	14
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：	HVSON
封装等效代码：	SOLCC14,.16,20	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Power Management Circuits
最大供电电流 (Isup)：	0.15 mA	最大供电电压 (Vsup)：	6 V
最小供电电压 (Vsup)：	4.5 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	4 mm
Base Number Matches：	1

LP3947ISD-51 数据手册

November 2004

LP3947

USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC

n Near-Depleted Battery Preconditioning

n Monitors Battery Temperature

The LP3947 is a complete charge management system that

n Built-In 5.6 hour timer

General Description

safely charges and maintains a Li-Ion battery from either

USB power source or AC adaptor. In USB mode, the LP3947

n Under Voltage and Over Voltage Lockout

n Charge Status Indicators

n Charge Current Monitor Analog Output

n LDO Mode Operation can source 1 Amp

n Continuous Over Current/Temperature Protection

supports charging in low power or high power mode. Alter-

natively, the LP3947 can take charge from AC adaptor. In

both USB and AC adaptor modes, charge current, battery

regulation voltage, and End of Charge (EOC) point can be

selected via I²C interface. The LP3947 can also operate on

default values that are pre-programmed in the factory. The

battery temperature is monitored continuously at the Ts pin

to safeguard against hazardous charging conditions. The

charger also has under-voltage and over-voltage protection

as well as an internal 5.6 hr timer to protect the battery. The

pass transistor and charge current sensing resistor are all

integrated inside the LP3947.

Key Specifications

n 1% Charger Voltage Accuracy Over 0˚C ≤ T_J≤ 85˚C

n 4.3V to 6.0V Input Voltage Range

n 100 mA to 750 mA charge current range, in charger

mode

n 100mA to 500mA charge current range, in USB mode

n LLP Package Power Dissipation: 2.7W at T_A= 25˚C

The LP3947 operates in four modes: pre-qualification, con-

stant current, constant voltage and maintenance modes.

There are two open drain outputs for status indication. An

internal amplifier readily converts the charge current into a

voltage. Also, the charger can operate in an LDO mode

providing a maximum of 1.2 Amp to the load.

Applications

n Cellular Phones

n PDAs

n Digital Cameras

n USB Powered Devices

n Programmable Current Sources

Features

n Supports USB Charging Scheme

n Integrated Pass Transistor

Typical Application Circuit

20111001

More Application Circuit can be found in the Application Note section.

DS201110

www.national.com

12 3 4 5 6 7...14

中文翻译

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与LP3947ISD-51相关器件

型号	品牌	获取价格	描述	数据表
LP3947ISD-51/NOPB	TI	获取价格	LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC
LP3947ISDX-51	NSC	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14, LLP-14, Power Management Circuit
LP3947ISDX-51/NOPB	TI	获取价格	LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC
LP395	NSC	获取价格	Ultra Reliable Power Transistor
LP3950	NSC	获取价格	Color LED Driver with Audio Synchronizer
LP3950	TI	获取价格	具有音频同步器的彩色 LED 驱动器
LP3950SL	NSC	获取价格	Color LED Driver with Audio Synchronizer
LP3950SL/NOPB	TI	获取价格	具有音频同步器的彩色 LED 驱动器 \| NPC \| 32 \| -40 to 85
LP3950SLX	NSC	获取价格	Color LED Driver with Audio Synchronizer
LP3950SLX/NOPB	TI	获取价格	IC,LASER DIODE/LED DRIVER,LLCC,32PIN,PLASTIC

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