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參數(shù)資料
| 型號： | LP3918TL-I |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA25 |
| 封裝： | 2.50 X 2.50 MM, MICRO, SMD-25 |
| 文件頁數(shù)： | 1/30頁 |
| 文件大?。?/td> | 1271K |
| 代理商： | LP3918TL-I |
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August 2007
LP3918
Battery Charge Management and Regulator Unit
General Description
The LP3918 is a fully integrated charger and multi-regulator
unit designed for CDMA cellular phones. The LP3918 con-
tains a Li-Ion battery charger, 7 low noise low dropout (LDO)
voltage regulators and a high-speed serial interface to pro-
gram on/off conditions and output voltages of individual reg-
ulators, and also to read status information from the PMU.
The Li-Ion charger integrates a power FET, reverse current
blocking diode, sense resistor with current monitor output,
and requires only a few external components. Charging is
thermally regulated to obtain the most efficient charging rate
for a given ambient temperature.
LDO regulators provide high PSRR and low noise ideally suit-
ed for supplying power to both analog and digital loads.
Applications
■ CDMA Phone Handsets
■ Low Power Wireless Handsets
■ Handheld Information Appliances
■ Personal Media Players
■ Digital Cameras
Features
■ Fully integrated Li-Ion battery charger with thermal
regulation
■ USB Charge Mode.
■ 7 Low Noise LDO’s
2 x 300 mA
3 x 150 mA
2 x 80 mA
■ I2C compatible interface for controlling LDO outputs and
charger operation
■ Thermal shutdown
■ Under Voltage Lockout
■ 25-bump Thin micro-SMD package 2.5 x 2.5 mm
■ Options available on request, please contact sales office
for further information;
- Level detect on HF_PWR & PWR_ON
- LDO Charging mode
- Custom Default Settings on Charger, and LDO O/P's.
Key Specifications
■ 50mA to 950mA Programmable Charge Current
■ 3.0V to 5.5V Input Voltage Range
■ 200mV typ. Dropout Voltage on 300 mA LDO’s
■ 2% (typ) Output Voltage Accuracy on LDO’s
Simplified Functional Block Diagram
20211601
2007 National Semiconductor Corporation
202116
www.national.com
LP3918
Battery
Charge
Management
and
Regulator
Unit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3923TLX | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30 |
| LP3923TLX-VB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30 |
| LP3923TL-VB | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30 |
| LP3923TLX-VC | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30 |
| LP3923TL-VI | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA30 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3918TL-L | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management and Regulator Unit |
| LP3918TLX | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LP3918TLX/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 |
| LP3918TLX-A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management and Regulator Unit |
| LP3918TLX-A/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 |
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