Datasheet > AT9933

AT9933

更新时间： 2024-11-10 14:54:43

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
16页	760K
描述
The AT9933 is a variable frequency PWM controller IC, designed to control an LED lamp driver using

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

AT9933 数据手册

AT9933

Hysteretic Boost-Buck (Ćuk) LED Driver IC

Features

General Description

• Constant Current LED Driver

• Steps Input Voltage Up or Down

• Low Electromagnetic Interference (EMI)

• Variable Frequency Operation

• Internal 75V Linear Regulator

• Input and Output Current Sensing

• Input Current Limit

The AT9933 is a variable frequency PWM controller IC,

designed to control an LED lamp driver using a

low-noise boost-buck (Ćuk) topology. It uses

patent-pending Hysteretic Current-mode control to

regulate both the input and the output currents. This

enables superior input surge immunity without the

necessity for complex loop compensation. Input

current control enables current limiting during Startup,

Input Undervoltage and Output Overload conditions.

The AT9933 provides a low-frequency PWM dimming

input that can accept an external control signal with a

duty cycle of 0%–100% and a high dimming ratio.

• Enable and Pulse-width Modulation (PWM)

Dimming

• Ambient Temperature Rating of up to 125°C

This AT9933-based LED driver is ideal for LED lamps.

The part is rated for up to 125°C ambient temperatures.

Applications

• LED Lighting Applications

Package Type

8-lead SOIC

(Top View)

VIN 1

8 REF

7 CS2

CS1 2

GND 3

6 VDD

5 PWMD

GATE 4

See Table 2-1 for pin information.

 2016 Microchip Technology Inc.

DS20005597A-page 1

12 3 4 5 6 7...16

中文翻译

下载PDF

与AT9933相关器件

型号	品牌	获取价格	描述	数据表
AT9933DB1	SUPERTEX	获取价格	High Bright LED Driver IC Meeting Automotive Requirements
AT9933LG-G	MICROCHIP	获取价格	SWITCHING CONTROLLER, PDSO8
AT9933LG-GVAO	MICROCHIP	获取价格	Switching Controller, PDSO8
ATA00500D1C	ETC	获取价格	Transimpedance Amplifier
ATA00501D1C	ANADIGICS	获取价格	AGC TRANSIMPEDANCE AMPLIFIER
ATA00501S2C	ANADIGICS	获取价格	AGC TRANSIMPEDANCE AMPLIFIER
ATA006A0X	LINEAGEPOWER	获取价格	8.3 - 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
ATA006A0X4	LINEAGEPOWER	获取价格	8.3 - 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
ATA006A0X4-SR	LINEAGEPOWER	获取价格	8.3 - 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current
ATA006A0X4-SRZ	LINEAGEPOWER	获取价格	8.3 - 14Vdc input; 0.75Vdc to 5.5Vdc Output; 6A output current