Datasheet > LT3519_15

LT3519_15

更新时间： 2024-11-14 01:14:51

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
20页	271K
描述
LED Driver with Integrated Schottky Diode

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中文翻译

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数据手册

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LT3519_15 数据手册

LT3519/LT3519-1/LT3519-2

LED Driver with Integrated

Schottky Diode

FEATURES

DESCRIPTION

™

Up to 3000:1 True Color PWM Dimming

Wide Input Voltage Range

The LT^®3519/LT3519-1/LT3519-2 are ﬁxed frequency

step-up DC/DC converters designed to drive LEDs. They

featureaninternal45V,750mAlowsideswitchandSchottky

diode. Combining a traditional voltage feedback and a

unique rail-to-rail current sense feedback allows these

converters to operate as a constant-voltage source or

constant-currentsource.Internalcompensationsimpliﬁes

applications.Thesedevicesfeaturerail-to-railLEDcurrent

sense pins that provide the most ﬂexibility in choosing a

converter conﬁguration to drive the LEDs. The LED cur-

rent is externally programmable with a sense resistor. The

external PWM provides up to 3000:1 PWM dimming and

Operation from 3V to 30V

Transient Protection to 40V

Rail-to-Rail LED Current Sense from 0V to 45V

45V, 750mA Internal Switch

Internal Schottky Diode

Constant-Current and Constant-Voltage Regulation

Boost, SEPIC, Buck-Boost Mode or Buck Mode

Topology

Open LED Protection and Open LED Status Pin

Programmable Undervoltage Lockout with Hysteresis

Fixed Frequency: 400kHz (LT3519), 1MHz (LT3519-1), the CTRL input provides analog dimming.

2.2MHz (LT3519-2)

Internal Compensation

CTRL Pin Provides Analog Dimming

Low Shutdown Current: <1μA

16-Lead MSOP Package

L, LT, LTC, LTM, Linear Technology and the Linear logo 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 and 7321203.

APPLICATIONS

Automotive

Industrial

Constant Current Source

Current Limited Constant Voltage Source

TYPICAL APPLICATION

4W Boost Automotive LED Driver

LED Current vs V_IN

68μH

OUT

120

= 6V AND ABOVE

6V TO 30V

1μF

4.7μF

100

SW ANODE CATHODE

ISP

2.49Ω

100k

ISN

SHDN/UVLO

LT3519

243k

REF

38V LED

100mA

CTRL

29.4k

137k

OPENLED

GND

PWM

(V)

3519 TA01b

PWM

3519 TA01a

3519fa

12 3 4 5 6 7...20

中文翻译

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与LT3519_15相关器件

型号	品牌	获取价格	描述	数据表
LT3519-1	Linear	获取价格	8-Channel × 100mA LED Driver
LT3519-1_15	Linear	获取价格	LED Driver with Integrated Schottky Diode
LT3519-2	Linear	获取价格	8-Channel × 100mA LED Driver
LT3519-2_15	Linear	获取价格	LED Driver with Integrated Schottky Diode
LT3519EMS	Linear	获取价格	LED Driver with Integrated Schottky Diode
LT3519EMS#PBF	Linear	获取价格	LT3519/LT3519-1/LT3519-2 - LED Driver with Integrated Schottky Diode; Package: MSOP; Pins:
LT3519EMS#TRPBF	Linear	获取价格	LT3519/LT3519-1/LT3519-2 - LED Driver with Integrated Schottky Diode; Package: MSOP; Pins:
LT3519EMS-1#PBF	Linear	获取价格	LT3519/LT3519-1/LT3519-2 - LED Driver with Integrated Schottky Diode; Package: MSOP; Pins:
LT3519EMS-2#PBF	Linear	获取价格	LT3519/LT3519-1/LT3519-2 - LED Driver with Integrated Schottky Diode; Package: MSOP; Pins:
LT3519EMS-2#TRPBF	Linear	获取价格	LT3519/LT3519-1/LT3519-2 - LED Driver with Integrated Schottky Diode; Package: MSOP; Pins:

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