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參數(shù)資料
| 型號： | LM3100MHX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER㈢ Synchronous 1MHz 1.5A Step-Down Voltage Regulator |
| 中文描述： | 1.9 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 1073K |
| 代理商： | LM3100MHX |
LM3100
SIMPLE SWITCHER
Synchronous 1MHz 1.5A
Step-Down Voltage Regulator
General Description
The LM3100 Synchronously Rectified Buck Converter fea-
tures all functions needed to implement a highly efficient,
cost effective buck regulator capable of supplying 1.5A to
loads with voltages as low as 0.8V. Dual 40V N-Channel
synchronous MOSFET switches allow for low external com-
ponent thus reducing complexity and minimizing board
space. The LM3100 is designed to work exceptionally well
with ceramic and other very low ESR output capacitors. The
Constant ON-Time (COT) regulation scheme requires no
loop compensation, results in fast load transient response,
and simplifies circuit implementation. Through the use of a
unique design the regulator does not rely on output capacitor
ESR for stability, as do most other COT regulators. The
operating frequency remains nearly constant with line and
load variations due to the inverse relationship between the
input voltage and the on-time. The oprating frequency can
be externally programmed up to 1MHz. Protection features
include V
under-voltage lockout, thermal shutdown and
gate drive under-voltage lockout. The part is available in a
thermally enhanced eTSSOP-20 package
Features
n
Input voltage range 4.5V - 36V
n
1.5A output current
n
0.8V,
±
1.5% reference
n
Integrated 40V, dual N-Channel buck synchronous
switches
n
Low component count and small solution size
n
No loop compensation required
n
Ultra-fast transient response
n
Stable with ceramic and other low ESR capacitors
n
Programmable switching frequency up to 1MHz
n
Max. duty cycle limited during start-up
n
Valley current limit
n
Precision Internal Reference for adjustable output
voltage down to 0.8V
n
Thermal shutdown
n
Thermally enhanced eTSSOP-20 package
Typical Applications
n
5VDC, 12VDC, 24VDC, 12VAC, and 24VAC systems
n
Embedded Systems
n
Industrial Controls
n
Automotive Telematics and Body Electronics
n
Point of Load Regulators
n
Storage Systems
n
Broadband Infrastructure
n
Direct Conversion from 2/3/4 Cell Lithium Batteries
Systems
Typical Application
20174702
SIMPLE SWITCHER
is a registered trademark of National Semiconductor Corporation
February 2006
L
S
2006 National Semiconductor Corporation
DS201747
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3100MHX/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 |
| LM3101 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Secondary-Side PWM Controller |
| LM3101M | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Secondary-Side PWM Controller |
| LM3101N | 制造商:Texas Instruments 功能描述: |
| LM3102 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ Synchronous 1MHz 2.5A Step-Down Voltage Regulator |
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