Datasheet > AT9917

AT9917

更新时间： 2024-09-10 14:53:59

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
24页	686K
描述
The AT9917 is an advanced fixed frequency PWM IC designed to control single-switch, boost, SEPIC,

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

AT9917 数据手册

AT9917

Automotive LED Driver IC with High Current Accuracy

Features

General Description

• AEC-Q100 Automotive Reliability Qualified

The AT9917 is an advanced fixed frequency PWM IC

designed to control single-switch, Boost, Sepic and

Buck LED drivers in a Constant Current mode. The

controller uses a Peak Current-mode control scheme

with programmable slope compensation and includes

an internal transconductance amplifier to control the

output current with high accuracy. The IC includes a

+/–1A gate driver that makes the AT9917 suitable for

high-power applications. An internal 40V linear

regulator powers the IC, eliminating the need for a

separate power supply for the device. The IC provides

a Fault output, which can be used to disconnect the

LEDs in case of a Fault condition (such as an alternator

load dump in automobiles) using an external

• Switch Mode Controller for Boost, SEPIC and

Buck Converters

• Closed-Loop Control of Output Current

• High PWM Dimming Ratio

• Internal 40V Linear Regulator

• Internal 3% Voltage Reference

• Constant Frequency Operation with

Programmable Slope Compensation

• Linear and PWM Dimming

• Programmable Jitter to Reduce EMI

• +/–1A MOSFET Gate Driver

• Output Short-Circuit Protection

• Output Overvoltage Protection

• Programmable Hiccup Timer

• Soft Start

disconnect FET. The AT9917 also provides

TTL-compatible, low-frequency PWM dimming input

that can accept an external control signal with a duty

ratio of 0% to 100% and a frequency of up to several

kilohertz. Temperature foldback of the output current is

possible, using an external NTC resistor.

• Temperature Foldback with External NTC

Resistor

The AT9917-based LED driver is suited for automotive

LED driver applications. The AT9917-based LED lamp

drivers can achieve efficiencies in excess of 90% when

buck or boost topologies are used.

Applications

• Automotive LED Driver Applications

Package Type

24-lead TSSPOP

(Top View)

REF

VIN

AVDD

PVDD

GATE

PGND

GND

JTR

FDBK

IREF

COMP

OVP

PWMD

FLT

DIV

NTC

See Table 2-1 for pin information.



2018-2022 Microchip Technology Inc. and its subsidiaries

DS20005557B-page 1

12 3 4 5 6 7...24

中文翻译

下载PDF

与AT9917相关器件

型号	品牌	获取价格	描述	数据表
AT9917TS-G	MICROCHIP	获取价格	LED DISPLAY DRIVER, PDSO24
AT9917TS-GVAO	MICROCHIP	获取价格	LED Driver, 1-Segment, PDSO24
AT9919	MICROCHIP	获取价格	The AT9919 is a PWM controller IC designed to drive high brightness LEDs using a buck topo
AT9919K7-G	MICROCHIP	获取价格	LED DISPLAY DRIVER, PDSO8
AT99231-B7B-4F	FOXCONN	获取价格	Card Edge Connector, 184 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Press Fi
AT99231-B7B-4N	FOXCONN	获取价格	Card Edge Connector, 184 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Press Fi
AT99232-B7B-4F	FOXCONN	获取价格	Card Edge Connector, 184 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Press Fi
AT99232-B7B-4N	FOXCONN	获取价格	Card Edge Connector, 184 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Press Fi
AT99233-B7B-4F	FOXCONN	获取价格	Card Edge Connector, 184 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Press Fi
AT99233-B7B-4N	FOXCONN	获取价格	Card Edge Connector, 184 Contact(s), 2 Row(s), Female, Straight, 0.05 inch Pitch, Press Fi

与AT9917相关文章

SL74HC10N：高性能三输入与非门解析
2024-09-03

64
AIC1781A 电池充电控制器深度解析
2024-09-03

52
Pickering新高压舌簧继电器亮相汽车测试博览会
2024-08-26

85
采用MCU+MPU双处理器架构实现的创新应用设计探索
2024-08-23

96

产品中心

服务支持

精选活动

关于我们

帮助中心

AT9917

AT9917 数据手册

与AT9917相关器件

与AT9917相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AT9917

AT9917 数据手册

与AT9917相关器件

与AT9917相关文章

您还可以找

您在本页遇到什么问题？