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LT1618EMSPBF

更新时间： 2024-01-26 12:21:28

品牌	Logo	应用领域
凌特 - Linear		转换器
页数	文件大小	规格书
16页	215K
描述
Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter

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中文翻译

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数据手册

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LT1618EMSPBF 数据手册

LT1618

Constant-Current/

Constant-Voltage 1.4MHz

Step-Up DC/DC Converter

FEATURES

DESCRIPTIO

■

Accurate Input/Output Current Control: ±5% Over

The LT^®1618 step-up DC/DC converter combines a tradi-

tionalvoltagefeedbackloopandauniquecurrentfeedback

loop to operate as a constant-current, constant-voltage

source. Thisfixedfrequency, currentmodeswitcheroper-

ates from a wide input voltage range of 1.6V to 18V, and

thehighswitchingfrequencyof1.4MHzpermitstheuseof

tiny, low profile inductors and capacitors. The current

sensevoltageissetat50mVandcanbeadjustedusingthe

Temperature

■

Accurate Output Voltage Control: ±1%

■

Wide V_INRange: 1.6V to 18V

■

1.4MHz Switching Frequency

■

High Output Voltage: Up to 35V

■

Low V_CESATSwitch: 200mV at 1A

■

Available in (3mm × 3mm × 0.8mm) 10-Pin DFN and

I_ADJpin.

^{10-Pin MSOP Pa}U^ckages

Available in the 10-Pin (3mm × 3mm) Exposed Pad DFN

and 10-pin MSOP packages, the LT1618 provides a com-

plete solution for constant-current applications.

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

APPLICATIO S

■

LED Backlight Drivers

USB Powered Boost/SEPIC Converters

Input Current Limited Boost/SEPIC Converters

Battery Chargers

■

TYPICAL APPLICATIO

USB to 12V Boost Converter

(with Selectable 100mA/500mA Input Current Limit)

10µH

0.1Ω

Efficiency Curve

OUT

12V

ISN

ISP

4.7µF

909k

LT1618

4.7µF

3.3V

107k

SHDN

OFF

GND

ADJ

20k

10nF

3.3V

500mA

100mA

13k

100 160

120 140

20 40 60

LOAD CURRENT (mA)

C1: TAIYO YUDEN JMK212BJ475

C2: TAIYO YUDEN EMK316BJ475

D1: ON SEMICONDUCTOR MBR0520

L1: SUMIDA CR43-100

1618 TA01a

1618 TA01b

sn1618 1618fas

12 3 4 5 6 7...16

中文翻译

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