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參數(shù)資料
| 型號： | LM3311SQ/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.6 A SWITCHING REGULATOR, 1280 kHz SWITCHING FREQ-MAX, QCC24 |
| 封裝： | LEAD FREE, LLP-24 |
| 文件頁數(shù)： | 1/32頁 |
| 文件大?。?/td> | 2504K |
| 代理商： | LM3311SQ/NOPB |
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November 26, 2007
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 modulation
switch. The boost (step-up) converter is used to generate an
adjustable output voltage and features a low R
DSON internal
switch for maximum efficiency. The operating frequency is
selectable between 660kHz and 1.28MHz allowing for the use
of small external components. An external soft-start pin en-
ables the user to tailor the soft-start time to a specific appli-
cation 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 135-
mA of current (typical) for the standard version and 200mA
(typical) for the HIOP version. 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
■ Boost converter with a 2A, 0.18 switch
■ Boost output voltage adjustable up to 20V
■ Operating voltage range of 2.5V to 7V
■ 660kHz/1.28MHz pin selectable switching frequency
■ Adjustable soft-start function
■ Input undervoltage protection
■ Over temperature protection
■ Adjustable low dropout linear regulator (LDO)
■ Integrated Op-Amp
■ Integrated gate pulse modulation (GPM) switch
■ 24-Lead LLP package
Applications
■ TFT Bias Supplies
■ Portable Applications
Typical Application Circuit
20126331
2007 National Semiconductor Corporation
201263
www.national.com
LM3311
Step-Up
PWM
DC/DC
Converter
with
Integrated
LDO,
Op-Amp,
and
Gate
Pulse
Modulation
Switch
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3311SQX | 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/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 |
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