Datasheet > LM3311_07

LM3311_07

更新时间： 2024-09-17 04:44:27

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器开关运算放大器脉冲栅
页数	文件大小	规格书
32页	2495K
描述
Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch

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LM3311_07 数据手册

November 26, 2007

LM3311

Step-Up PWM DC/DC Converter with Integrated LDO, Op-

Amp, and Gate Pulse Modulation Switch

General Description

Features

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_DSONinternal

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.

Boost converter with a 2A, 0.18Ω 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

201263

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与LM3311_07相关器件

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LM3311SQ	NSC	获取价格	Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch
LM3311SQ-HIOP	NSC	获取价格	Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch
LM3311SQ-HIOP	TI	获取价格	2.6A SWITCHING REGULATOR, 1280kHz SWITCHING FREQ-MAX, QCC24, LLP-24
LM3311SQ-HIOP/NOPB	TI	获取价格	Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch
LM3311SQX	NSC	获取价格	Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch
LM3311SQX	TI	获取价格	2.6A SWITCHING REGULATOR, 1280kHz SWITCHING FREQ-MAX, QCC24, LLP-24
LM3311SQX-HIOP	NSC	获取价格	Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch
LM3311SQX-HIOP	TI	获取价格	2.6A SWITCHING REGULATOR, 1280kHz SWITCHING FREQ-MAX, QCC24, LLP-24
LM3311SQX-HIOP/NOPB	NSC	获取价格	IC 2.6 A SWITCHING REGULATOR, 1280 kHz SWITCHING FREQ-MAX, QCC24, LEAD FREE, LLP-24, Switc
LM3311SQX-HIOP/NOPB	TI	获取价格	Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch