Datasheet > LM3492-Q1

LM3492-Q1

更新时间： 2024-09-19 11:10:27

品牌	Logo	应用领域
德州仪器 - TI		升压转换器驱动驱动器调节器
页数	文件大小	规格书
32页	1539K
描述
具有升压转换器和快速电流调节器的汽车类 2 通道独立可调光 LED 驱动器

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LM3492, LM3492-Q1

SNVS656D –SEPTEMBER 2010–REVISED OCTOBER 2016

LM3492/-Q1 Two-Channel Individual Dimmable LED Driver With Boost Converter and Fast

Current Regulator

1 Features

•

Boost Converter:

2 Applications

–

LM3492-Q1 is an Automotive Grade Product

That is AEC Q100 Grade 1 Qualified

•

Ultra-High Contrast Ratio 6.5”-10” LCD Display

Backlight up to 28 LEDs

–

Very Wide Input Voltage Ranged

From 4.5 V to 65 V

•

Automotive or Marine GPS Displays

3 Description

–

Programmable Soft Start

The LM3492/-Q1 integrates a boost converter and a

two-channel current regulator to implement a high

efficient and cost effective LED driver for driving two

individually dimmable LED strings with a maximum

power of 15 W and an output voltage of up to 65 V.

The boost converter employs a proprietary Projected-

On-Time control method to give a fast transient

response with no compensation required, and a

nearly constant switching frequency programmable

from 200 kHz to 1 MHz. The application circuit is

stable with ceramic capacitors and produces no

audible noise on dimming. The programmable peak

current limit and soft-start features reduce current

surges at start-up, and an integrated 190 mΩ, 3.9-A

N-Channel MOSFET switch minimizes the solution

size.

No Loop Compensation Required

Stable With Ceramic and Other Low ESR

Capacitors With No Audible Noise

–

Nearly Constant Switching Frequency

Programmable From 200 kHz to 1 MHz

•

Current Regulators:

–

Programmable LED Current from 50 mA to

200 mA

–

1000:1 Contrast Ratio at a Dimming

Frequency of More Than 3 kHz, Minimum LED

Current Pulse Width is 300 ns

–

Two Individual Dimmable LED Strings up to

65 V, Total 15 W (Typically 28 LEDs at

150 mA)

Device Information⁽¹⁾

Dynamic Headroom Control Maximizes

Efficiency

PART NUMBER

LM3492

LM3492-Q1

PACKAGE

BODY SIZE (NOM)

–

Over-Power Protection

±3% Current Accuracy

HTSSOP (20)

7.80 mm × 4.40 mm

•

Supervisory Functions:

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

–

Precision Enable

COMM I/O Pin for Diagnostic and Commands

Thermal Shutdown Protection

Thermally Enhanced 20-Pin HTSSOP package

Typical Application

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...32

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与LM3492-Q1相关器件

型号	品牌	获取价格	描述	数据表
LM3492QMH/NOPB	TI	获取价格	具有升压转换器和快速电流调节器的汽车类 2 通道独立可调光 LED 驱动器 \| PWP \|
LM3492QMHX/NOPB	TI	获取价格	具有升压转换器和快速电流调节器的汽车类 2 通道独立可调光 LED 驱动器 \| PWP \|
LM34930	NSC	获取价格	Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Lim
LM34930	TI	获取价格	1A Constant On-Time Buck Switching Regulator with Intelligent Current
LM34930TL	NSC	获取价格	Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Lim
LM34930TL/NOPB	TI	获取价格	Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Lim
LM34930TLX	NSC	获取价格	Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Lim
LM34936	TI	获取价格	30V 宽输入电压同步 4 开关降压/升压控制器
LM34936-Q1	TI	获取价格	汽车类、30V 宽输入电压同步 4 开关降压/升压控制器
LM34936QPWPRQ1	TI	获取价格	汽车类、30V 宽输入电压同步 4 开关降压/升压控制器 \| PWP \| 28 \| -40

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