Datasheet > LT3500

LT3500

更新时间： 2024-11-05 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		控制器稳压器
页数	文件大小	规格书
28页	322K
描述
单片式 2A 降压型稳压器和线性稳压器/控制器

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中文翻译

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数据手册

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LT3500 数据手册

LT3500

Monolithic 2A Step-Down

Regulator Plus Linear

Regulator/Controller

FEATURES

DESCRIPTION

The LT^®3500 is a current mode PWM step-down DC/DC

converterwithaninternal2.3Aswitch.Thewideinputrange

of 3V to 40V makes the LT3500 suitable for regulating

power from a wide variety of sources, including automo-

tive batteries, 24V industrial supplies and unregulated

wall adapters.

Wide Input Range: 3V to 36V Operating,

40V Maximum

Short-Circuit Protected Over Full Input Range

2A Output Current Capability

Adjustable/Synchronizable Fixed Frequency

Operation from 250kHz to 2.2MHz

Soft-Start/Tracking Capability

Resistor-programmable 250kHz to 2.2MHz frequency

range and synchronization capability enable optimization

between efﬁciency and external component size. Cycle-

by-cycle current limit, frequency foldback and thermal

shutdown provide protection against a shorted output.

The soft-start feature controls the ramp rate of the output

voltage, eliminating input current surge during start-up,

and also provides output tracking.

Output Adjustable Down to 0.8V

Adjustable Linear Regulator/Driver with 13mA

Output Capability

Power Good Comparator with Complimentary

Outputs

Low Shutdown Current: 12μA

Thermally Enhanced 3mm × 3mm DFN or 16-Pin

MSOP Package

The LT3500 contains an internal NPN transistor with feed-

back control which can be conﬁgured as a linear regulator

or as a linear regulator controller.

APPLICATIONS

Automotive Battery Regulation

Industrial Control

TheLT3500’slowcurrentshutdownmode(<12μA)enables

easy power management in battery-powered systems.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Wall Transformer Regulation

Distributed Power Regulation

TYPICAL APPLICATION

Dual Step-Down Converters

Switching Converter Efﬁciency

Output Voltage Ripple

6V TO 36V

2.2μF

BST

0.47μF

6.8μH

LT3500

OUT1

= 5V AT 1A

AC COUPLED

2mV/DIV

OUT1

B240A

SHDN

42.2k

22μF

0.47μF

8.06k

= 3.3V AT 1A

AC COUPLED

2mV/DIV

OUT2

SYNC LDRV

= 12V

= 0A

OUT2

53.6k

330pF

24.9k

8.06k

FREQUENCY = 800kHz

OUT2

3.3V

LFB

3500 TA01c

500ns/DIV

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

40.2k

22μF

LOAD CURRENT (A)

3500 TA01b

3500 TA01a

3500fc

12 3 4 5 6 7...28

中文翻译

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与LT3500相关器件

型号	品牌	获取价格	描述	数据表
LT3500EDD#PBF	Linear	获取价格	LT3500 - Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller; Package: DFN;
LT3500EDD#TRPBF	Linear	获取价格	暂无描述
LT3500EDD-PBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT3500EDD-TRPBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT3500EMSE-PBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT3500EMSE-TRPBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT3500HDD-PBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT3500HDD-TRPBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT3500HMSE-PBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller
LT3500HMSE-TRPBF	Linear	获取价格	Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller

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