Datasheet > AT9932

AT9932

更新时间： 2024-11-06 14:54:27

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
18页	819K
描述
The AT9932 is an advanced fixed frequency PWM controller IC designed to control an LED lamp driver

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

AT9932 数据手册

AT9932

Automotive Boost-Buck LED Lamp Driver IC

Features

General Description

• Constant Output Current

The AT9932 is an advanced fixed-frequency PWM

controller IC designed to control an LED lamp driver

using a boost-buck topology that can step the input

voltage up or down automatically. The IC provides fast

output current transient response and very low

susceptibility to input voltage transients. This allows the

lamp driver to pass the rigorous electrical transient

requirements of SAE J1455 or ISO 7637-2, making the

AT9932 an ultimate solution for automobile lighting.

Capacitive isolation protects the LED Lamp from failure

of the switching MOSFET.

• Steps Output Voltage Up or Down

• Very Low Susceptibility to Input Voltage

Transients

• Frequency Jitter

• Externally Programmable Fixed Switching

Frequency

• Temperature Foldback with External NTC

Resistor

• Internal 40V Voltage Regulator

• +/–1A MOSFET Gate Driver

• Short LED Protection

The AT9932 features a unique feed-forward current

control scheme, differential output current sensing, soft

start and protection from short or open LED load.

Switching frequency can be programmed with a single

external resistor.

• Open LED Protection

• Input Undervoltage Lockout Protection

• Enable and PWM Dimming

• ±3% Accurate Trimmed Reference

• AEC-Q100 Compliant

The AT9932 includes a temperature foldback of the

output current using an external NTC resistor. This

feature allows optimization of the light output of the

LED load for safe operation over the entire operating

temperature range.

Applications

• Automobile Lighting

• Battery-Powered LED Lamps

• Other Low-Voltage AC/DC or DC/DC LED Drivers

Package Type

24-lead TSSOP

(Top view)

VIN

AVDD

PVDD

GATE

PGND

GND

JTR

REF

UVLO

DRP

COMP

FFN

FFP

PWMD

FLT

DIV

NTC

See Table 2-1 for pin information.

 2018 Microchip Technology Inc.

DS20005789A-page 1

12 3 4 5 6 7...18

中文翻译

下载PDF

与AT9932相关器件

型号	品牌	获取价格	描述	数据表
AT9932TS-G	SUPERTEX	获取价格	Automotive Boost-Buck LED Lamp Driver IC
AT9932TS-GVAO	MICROCHIP	获取价格	LED Driver, 1-Segment, PDSO24
AT9933	SUPERTEX	获取价格	Hysteretic Boost-Buck (cuk) LED Driver IC
AT9933	MICROCHIP	获取价格	The AT9933 is a variable frequency PWM controller IC, designed to control an LED lamp driv
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