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参数资料
| 型号： | LM3102TL-1 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PBGA28 |
| 封装： | USMD-28 |
| 文件页数： | 1/20页 |
| 文件大小： | 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
相关PDF资料 |
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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3102TL-1/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM3102TLX-1/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM3103 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ Synchronous 1MHz 0.75A Step-Down Voltage Regulator |
| LM3103EVAL | 功能描述:电源管理IC开发工具 LM3103 EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| LM3103EVAL/NOPB | 功能描述:电源管理IC开发工具 LM3103 EVAL BRD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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