- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385493 > LP3947 (National Semiconductor Corporation) USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC PDF資料下載
參數(shù)資料
| 型號(hào)： | LP3947 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC |
| 中文描述： | 的USB / AC適配器，單節(jié)鋰離子電池充電器IC |
| 文件頁(yè)數(shù)： | 1/14頁(yè) |
| 文件大小： | 649K |
| 代理商： | LP3947 |
當(dāng)前第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)
LP3947
USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC
General Description
The LP3947 is a complete charge management system that
safely charges and maintains a Li-Ion battery from either
USB power source orAC adaptor. In USB mode, the LP3947
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 I
2
C 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.
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.
Features
n
Supports USB Charging Scheme
n
Integrated Pass Transistor
n
Near-Depleted Battery Preconditioning
n
Monitors Battery Temperature
n
Built-In 5.6 hour timer
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
Key Specifications
n
1% Charger Voltage Accuracy Over 0C
≤
T
J
≤
85C
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
= 25C
Applications
n
Cellular Phones
n
PDAs
n
Digital Cameras
n
USB Powered Devices
n
Programmable Current Sources
Typical Application Circuit
20111001
More Application Circuit can be found in the Application Note section.
November 2004
L
2004 National Semiconductor Corporation
DS201110
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3963-1.8 | 3A Fast Ultra Low Dropout Linear Regulators |
| LP3966-1.8 | 3A Fast Ultra Low Dropout Linear Regulators |
| LP3966-ADJ | 3A Fast Ultra Low Dropout Linear Regulators |
| LP3970 | Power Management Unit for Advanced Application Processors |
| LP3972 | Power Management Unit for Advanced Application Processors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3947ISD-09 | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-09/NOPB | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-51 | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-51/NOPB | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP3947ISD-51EV | 功能描述:電源管理IC開發(fā)工具 LP3947 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。