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參數(shù)資料
| 型號(hào)： | LM3311SQX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch |
| 中文描述： | 2.6 A SWITCHING REGULATOR, 1280 kHz SWITCHING FREQ-MAX, QCC24 |
| 封裝： | LLP-24 |
| 文件頁(yè)數(shù)： | 1/29頁(yè) |
| 文件大?。?/td> | 2052K |
| 代理商： | LM3311SQX |
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LM3311
Step-Up PWM DC/DC Converter with Integrated LDO,
Op-Amp, and Gate Pulse Modulation Switch
General Description
The LM3311 is a step-up DC/DC converter integrated with
an LDO, an Operational Amplifier, and a gate pulse modu-
lation switch. The boost (step-up) converter is used to gen-
erate an adjustable output voltage and features a low R
DSON
internal switch for maximum efficiency. The operating fre-
quency is selectable between 660kHz and 1.28MHz allowing
for the use of small external components. An external soft-
start pin enables the user to tailor the soft-start time to a
specific application and limit the inrush current. The LDO
also has an adjustable output voltage and is stable using
ceramic output capacitors. The Op-Amp is capable of
sourcing/sinking 135mA of current (typical). The gate pulse
modulation switch can operate with a VGH voltage of 5V to
30V. The LM3311 is available in a low profile 24-lead LLP
package.
Features
n
Boost converter with a 2A, 0.18
switch
n
Boost output voltage adjustable up to 20V
n
Operating voltage range of 2.5V to 7V
n
660kHz/1.28MHz pin selectable switching frequency
n
Adjustable soft-start function
n
Input undervoltage protection
n
Over temperature protection
n
Adjustable low dropout linear regulator (LDO)
n
Integrated Op-Amp
n
Integrated gate pulse modulation (GPM) switch
n
24-Lead LLP package
Applications
n
TFT Bias Supplies
n
Portable Applications
Typical Application Circuit
20126331
September 2005
L
M
2005 National Semiconductor Corporation
DS201263
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3311SQX/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3311SQX-HIOP | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3311SQX-HIOP/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM33164D | 制造商:Motorola Inc 功能描述:33164D |
| LM331A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Voltage-to-Frequency Converters |
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