Datasheet > LT3598IUF-PBF

LT3598IUF-PBF

更新时间： 2024-09-25 05:43:35

品牌	Logo	应用领域
凌特 - Linear		驱动器
页数	文件大小	规格书
20页	342K
描述
6-String 30mA LED Driver with 1.5% Current Matching

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中文翻译

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数据手册

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LT3598IUF-PBF 数据手册

LT3598

6-String 30mA LED Driver

with 1.5% Current Matching

FEATURES

DESCRIPTION

TheLT^®3598isaﬁxedfrequencystep-upDC/DCconverter

designed to drive up to six strings of LEDs at an output

voltage up to 44V. LED dimming can be achieved with

analog dimming on the CTRL pin, and with pulse width

modulation dimming on the PWM pin. The LT3598 accu-

rately regulates LED current even when the input voltage

is higher than the LED output voltage. The switching fre-

quency is programmable from 200kHz to 2.5MHz through

an external resistor.

True Color PWM™ Dimming Delivers Up to 3000:1

Dimming Ratio

Drives Six Strings of LEDs at Up to 30mA

1.5% Accurate LED Current Matching

Wide Input Voltage Range: 3.2V to 30V

Output Voltage Up to 44V

Regulates Current Even When V > V

OUT

Disconnects LEDs in Shutdown

Programmable Open LED Protection (Regulated)

OPENLED Alert Pin

Additional features include programmable overvoltage

protection, switching frequency synchronization to an

external clock, LED current derating based on junction

temperature and/or LED temperature, LED string disable

control, OPENLED alert pin and output voltage limiting

when all LED strings are disconnected. The LT3598 is

available in a thermally enhanced 24-pin (4mm × 4mm)

QFN package.

Programmable LED Current Derating

Adjustable Frequency: 200kHz to 2.5MHz

Synchronizable to an External Clock

Parallel Channels for Higher Current per LED String

Thermally Enhanced 4mm × 4mm QFN Package

APPLICATIONS

Notebook Computer Display

LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

True Color PWM is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners. Protected by U.S. Patents, including 7199560, 7321203.

Medium Size Displays

Automotive LCD Display

TYPICAL APPLICATION

LED Current Matching

90% Efﬁcient LED Driver for 60 White LEDs

8V TO 40V

10μH

1.5

ALL SIX LED STRINGS

4.7μF

2.2μF

OUT

1.0

O_SW

1.00M

30.9k

100k

2.2μF

0.5

OPENLED

SHDN

PWM

SHDN

PWM

SYNC

LT3598

–0.5

–1.0

–1.5

SYNC

51.1k

REF

10k

LED1

LED2

LED3

LED4

LED5

LED6

–25

75 100 125

–50

CTRL

TEMPERATURE (°C)

20mA

3598 TA01b

100k

GND

SET SET

60.4k

10nF

2.61k

15nF

47pF

14.7k

100k

3598 TA01a

3598f

12 3 4 5 6 7...20

中文翻译

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与LT3598IUF-PBF相关器件

型号	品牌	获取价格	描述	数据表
LT3598IUFTRPBF	Linear	获取价格	6-String 30mA LED Driver with 1.5% Current Matching
LT3598IUF-TRPBF	Linear	获取价格	6-String 30mA LED Driver with 1.5% Current Matching
LT3599	Linear	获取价格	4-Channel 120mA LED Driver with ±1.5% Current
LT3599	ADI	获取价格	具 ±1.5% 电流匹配准确度的四串 120mA LED 驱动器
LT3599_1	Linear	获取价格	4-Channel 120mA LED Driver with ±1.5% Current
LT3599EFE	Linear	获取价格	4-Channel 120mA LED Driver with ±1.5% Current
LT3599EFE#PBF	Linear	获取价格	LT3599 - 4-String 120mA LED Driver with ±1.5%
LT3599EFE#TRPBF	Linear	获取价格	LT3599 - 4-String 120mA LED Driver with ±1.5%
LT3599EFEPBF	Linear	获取价格	4-Channel 120mA LED Driver with ±1.5% Current
LT3599EFE-PBF	Linear	获取价格	4-Channel 120mA LED Driver with ±1.5% Current

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