LT3517EUF-PBF

更新时间： 2024-11-25 05:43:31

品牌	Logo	应用领域
凌特 - Linear		驱动器开关
页数	文件大小	规格书
20页	274K
描述
Full-Featured LED Driver with 1.5A Switch Current

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中文翻译

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数据手册

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LT3517EUF-PBF 数据手册

LT3517

Full-Featured LED Driver

with 1.5A Switch Current

FEATURES

DESCRIPTION

5000:1 True Color PWM^TMDimming Ratio

The LT^®3517 is a current mode DC/DC converter with an

internal 1.5A, 45V switch speciﬁcally designed to drive

LEDs. The LT3517 operates as a LED driver in boost,

buck mode and buck-boost mode. It combines a tradi-

tional voltage loop and a unique current loop to operate

as a constant-current source or constant-voltage source.

Programmableswitchingfrequencyallowsoptimizationof

theexternalcomponentsforefﬁciencyorcomponentsize.

The switching frequency of LT3517 can be synchronized

to an external clock signal. The LED current is externally

programmable with a 100mV sense resistor. The external

PWMinputprovidesupto5000:1LEDdimming.TheCTRL

pin provides further 10:1 dimming ratio.

■

1.5A, 45V Internal Switch

■

100mV High Side Current Sense

■

Open LED Protection

■

Adjustable Frequency: 250kHz to 2.5MHz

■

Wide Input Voltage Range:

Operation from 3V to 30V

Transient Protection to 40V

■

Operates in Boost, Buck Mode and Buck-Boost Mode

■

Gate Driver for PMOS LED Disconnect*

Constant-Current and Constant-Voltage Regulation

CTRL Pin Provides 10:1 Analog Dimming

Low Shutdown Current: <1μA

Available in (4mm × 4mm) 16-Lead QFN and 16-Pin

TSSOP Packages

■

The LT3517 is available in the tiny footprint 16-Lead QFN

(4mm×4mm)andthe16-PinTSSOPpackages.TheLT3517

provides a complete solution for both constant-voltage

and constant-current applications.

APPLICATIONS

■

Display Backlighting

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

True Color PWM is a trademark of Linear Technology Corporation. Patent Pending.

All other trademarks are the property of their respective owners.

*Patents Pending.

■

Automotive and Avionic Lighting

■

Illumination

Scanners

■

TYPICAL APPLICATION

1A Buck Mode LED Driver

Efﬁciency

100

CTRL = V

REF

10μF

100mΩ

24V

2.2μF

15μH

ISP

ISN TG

3.3V

2.2μF

SHDN

LT3517

CTRL

PWM

REF

PWM

SYNC

GND

TGEN V

REF

100

16.9k

1MHz

PWM DUTY CYCLE (%)

0.1μF

3517 TA01b

3517 TA01a

3517fa

12 3 4 5 6 7...20

中文翻译

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与LT3517EUF-PBF相关器件

型号	品牌	获取价格	描述	数据表
LT3517EUF-TRPBF	Linear	获取价格	Full-Featured LED Driver with 1.5A Switch Current
LT3517HFE#TRPBF	Linear	获取价格	LT3517 - Full-Featured LED Driver with 1.5A Switch Current; Package: TSSOP; Pins: 16; Temp
LT3517HFE-PBF	Linear	获取价格	Full-Featured LED Driver with 1.5A Switch Current
LT3517HFE-TRPBF	Linear	获取价格	Full-Featured LED Driver with 1.5A Switch Current
LT3517HUF	LINEAR_DIMENSIONS	获取价格	Full-Featured LED Driver with 1.5A Switch Current
LT3517HUF#PBF	Linear	获取价格	暂无描述
LT3517HUF#TRPBF	Linear	获取价格	LT3517 - Full-Featured LED Driver with 1.5A Switch Current; Package: QFN; Pins: 16; Temper
LT3517IFE	Linear	获取价格	LT3517 - Full-Featured LED Driver with 1.5A Switch Current; Package: TSSOP; Pins: 16; Temp
LT3517IFE#PBF	Linear	获取价格	LT3517 - Full-Featured LED Driver with 1.5A Switch Current; Package: TSSOP; Pins: 16; Temp
LT3517IFE#TRPBF	Linear	获取价格	LT3517 - Full-Featured LED Driver with 1.5A Switch Current; Package: TSSOP; Pins: 16; Temp

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