參數(shù)資料
型號(hào)： LM3102TL-1
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PBGA28
封裝： USMD-28
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 623K
代理商： LM3102TL-1
LM3102
December 10, 2010
SIMPLE SWITCHER Synchronous 1MHz 2.5A
Step-Down Voltage Regulator
General Description
The LM3102 Synchronously Rectified Buck Converter fea-
tures all required functions to implement a highly efficient and
cost effective buck regulator. It is capable of supplying 2.5A
to loads with an output voltage as low as 0.8V. Dual N-Chan-
nel synchronous MOSFET switches allow a low component
count, thus reducing complexity and minimizing board size.
Different from most other COT regulators, the LM3102 does
not rely on output capacitor ESR for stability, and is designed
to work exceptionally well with ceramic and other very low
ESR output capacitors. It requires no loop compensation, re-
sults in a fast load transient response and simple circuit
implementation. The operating frequency remains nearly con-
stant with line variations due to the inverse relationship be-
tween the input voltage and the on-time. The operating
frequency can be externally programmed up to 1 MHz. Pro-
tection features include V
CC under-voltage lock-out, output
over-voltage protection, thermal shutdown, and gate drive
under-voltage lock-out. The LM3102 is available in the ther-
mally enhanced eTSSOP-20 package as well as a uSMD low
profile chip-scale package with reduced output current.
Key Specifications
■ Input voltage range 4.5V-42V
■ 2.5A output current
■ 0.8V, ±1.5% reference
■ Integrated dual N-Channel main and synchronous
MOSFETs
■ Thermally enhanced eTSSOP-20 package
Features
■ Low component count and small solution size
■ Stable with ceramic and other low ESR capacitors
■ No loop compensation required
■ High efficiency at a light load by DCM operation
■ Pre-bias startup
■ Ultra-fast transient response
■ Programmable soft-start
■ Programmable switching frequency up to 1 MHz
■ Valley current limit
■ Output over-voltage protection
■ Precision internal reference for an adjustable output
voltage down to 0.8V
■ Thermal shutdown
Typical Applications
■ 5VDC, 12VDC, 24VDC, 12VAC, and 24VAC systems
■ Embedded Systems
■ Industrial Control
■ Automotive Telematics and Body Electronics
■ Point of Load Regulators
■ Storage Systems
■ Broadband Infrastructure
■ Direct Conversion from 2/3/4 Cell Lithium Batteries
Systems
Typical Application
30021301
SIMPLE SWITCHER is a registered trademark of National Semiconductor Corporation
2010 National Semiconductor Corporation
300213
www.national.com
LM3102
SIMPLE
SWITCHER
Synchronous
1MHz
2.5A
Step-Down
Voltage
Regulator
相關(guān)PDF資料
PDF描述
LM3411A-3.3MWC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 3.3 V, UUC
LM3411A-3.3MDC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 3.3 V, UUC
LM3411A-5.0MWC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 5 V, UUC
LM385D-2.5 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO8
LM385BLP-2.5 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PBCY3
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM3102TL-1/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM3102TLX-1/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM3103 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ Synchronous 1MHz 0.75A Step-Down Voltage Regulator
LM3103EVAL 功能描述:電源管理IC開發(fā)工具 LM3103 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
LM3103EVAL/NOPB 功能描述:電源管理IC開發(fā)工具 LM3103 EVAL BRD 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
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