Datasheet Linear Technology LT3922HUFD#PBF — 数据表

制造商	Linear Technology
系列	LT3922
零件号	LT3922HUFD#PBF

36V，2A同步升压LED驱动器

数据表

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PDF, 2.5 Mb, 语言: en, 文件上传: Oct 4, 2017, 页数: 32
36V, 2A Synchronous Step-Up LED Driver

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Package	4x5 QFN-28
Package Code	UFD
Package Index	05-08-1712

参数化

Demo Boards	DC2247A
Design Tools	LTspice File
Dimming	5000:1 PWM, 128:1 Internal PWM
Export Control	no
Features	Spread Spectrum, Silent Switcher Architecture
Frequency	2000 kHz
Ishutdown	1 µA
Isupply	2.9 mA
Max Number of LEDs	Up to 34V
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	-40 to 125 °C
Output Current	2 A
Switch Current	2.3 A
Synchronous	yes
Topology	Boost, Buck, Buck-Boost
Vin Max	36 V
Vin Min	2.8 V
Vout Max	40 V

生态计划

RoHS

Compliant

设计须知

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Low EMI LED Driver Features 2A, 40V, Integrated, Synchronous Switches for Automotive Lightin &mdash DN557
PDF, 298 Kb, 档案已发布: Oct 12, 2016
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Low EMI LED Driver Features 2A, 40V, Integrated,
Synchronous Switches for Automotive Lighting
Design Note 557
Keith Szolusha
Introduction
The breadth of LED applications has grown to encompass everything from general lighting to automotive,
industrial and test equipment, sign boards and safety
instruments. Feature requirements for LED drivers
have become more extensive. The latest LED solutions require drivers that are compact, efficient, low
noise, and have high dimming ratios and advanced
fault protection. The LT3922 meets these demands. right balance of high efficiency and low noise. They
can be run at up to 2.5MHz for compact solutions.
The tiny LT3922 LED driver features low EMI, high
efficiency and fault protection required in automotive environments. It can handle 36V automotive
transients and 3V cold crank. Its Silent SwitcherВ®
architecture, spread spectrum frequency modulation (SSFM) and controlled switching edges make
it ideal for powering LEDs with low EMI. Its flexible
topology is useful in daytime running lights, signal
lights, taillights, and headlight segments as well as
dashboard and heads-up displays with high dimming
ratios. Built-in fault protection reduces the number of
extra components required to protect against short
and open LEDs. The LT3922 synchronous LED driver with integrated …

文章

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Synchronous, Low EMI LED Driver Features Integrated Switches and Internal PWM Dimming &mdash LT Journal
PDF, 1.6 Mb, 档案已发布: Aug 10, 2016
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August 2016 I N T H I S I S S U E power supply sequencing
simplified 10 simple, fast pulse source
outpaces expensive lab
equipment 19 Volume 26 Number 3 Synchronous, Low EMI LED Driver
Features Integrated Switches and
Internal PWM Dimming
Keith Szolusha and Kyle Lawrence measuring 18 2-wire
RTDs with the LTC2983
high accuracy digital
temperature measurement
system 22 minimize debug time in
power system design
for FPGA, GPU and ASIC The breadth of LED applications has grown to encompass
everything from general lighting to automotive, industrial and test
equipment, sign boards and safety equipment. As a result, the
breadth of design requirements for LED drivers has expanded.
The latest LED solutions require drivers that are compact,
efficient, low noise, and feature high dimming ratios and advanced
fault protection. The LT3922 easily meets these demands. systems 26 THE LT3922 WITH INTEGRATED SWITCHES AND
INTERNAL PWM DIMMING The LTВ®3922 36V, synchronous LED driver with
integrated 2A switches can be configured as a boost,
buck or boost-buck LED driver. Its high efficiency
synchronous and integrated power switches fit into …

模型线

系列: LT3922 (6)

LT3922EUFD#PBF LT3922EUFD#TRPBF LT3922HUFD#PBF LT3922HUFD#TRPBF LT3922IUFD#PBF LT3922IUFD#TRPBF

制造商分类

Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers | Step-Down (Buck) LED Drivers | Buck-Boost LED Drivers | Multitopology LED Driver
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) LED Drivers

其他名称:

LT3922HUFDPBF, LT3922HUFD PBF