Datasheet > LT3695IMSEPBF

LT3695IMSEPBF

更新时间： 2024-09-14 05:43:35

品牌	Logo	应用领域
凌特 - Linear		稳压器
页数	文件大小	规格书
28页	299K
描述
1A Fault Tolerant Micropower Step-Down Regulator

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中文翻译

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LT3695IMSEPBF 数据手册

LT3695

1A Fault Tolerant Micropower

Step-Down Regulator

FEATURES

DESCRIPTION

TheLT^®3695isanadjustablefrequency(250kHzto2.2MHz)

monolithicbuckswitchingregulatorthatacceptsinputvolt-

ages up to 36V and can safely sustain transient voltages

up to 60V. The device includes a high efﬁciency switch, a

boostdiode,andthenecessaryoscillator,controlandlogic

circuitry. Current mode topology is used for fast transient

response and good loop stability. A SYNC pin allows the

user to synchronize the part to an external clock, and to

choose between low ripple Burst Mode operation and

standard PWM operation.

Wide Input Range:

Operation from 3.6V to 36V

Overvoltage Lockout Protects Circuits Through

60V Transients

FMEA Fault Tolerant:

Output Stays at or Below Regulation Voltage

During Adjacent Pin Short or When a Pin Is Left

Floating

1A Output Current

Low Ripple (< 15mV ) Burst Mode^®Operation

P-P

I = 75μA for 12V to 3.3V with No Load

OUT

The LT3695 tolerates adjacent pin shorts or an open pin

without raising the output voltage above its programmed

value.

Adjustable Switching Frequency: 250kHz to 2.2MHz

Short-Circuit Protected

Synchronizable Between 300kHz and 2.2MHz

Output Voltage: 0.8V to 20V

Low ripple Burst Mode operation maintains high efﬁ-

ciency at low output currents while keeping output ripple

below 15mV in a typical application. Shutdown reduces

input supply current to less than 1μA while a resistor and

capacitor on the RUN/SS pin provide a controlled output

voltage ramp (soft-start). Protection circuitry senses the

current in the power switch and external Schottky catch

diode to protect the LT3695 against short-circuit condi-

tions. Frequency foldback and thermal shutdown provide

additional protection.

Power Good Flag

Small Thermally Enhanced 16-Pin MSOP Package

APPLICATIONS

Automotive Battery Regulation

Automotive Entertainment Systems

Distributed Supply Regulation

Industrial Supplies

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

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

The LT3695 is available in a thermally enhanced 16-Pin

MSOP package.

TYPICAL APPLICATION

Efﬁciency

100

5V Step-Down Converter

= 5V

OUT

6.9V TO 36V

TRANSIENT TO 60V

0.9A, V > 6.9V

1A, V > 12V

BOOST

RUN/SS

OUT

= 3.3V

2.2μF

ON OFF

0.22μF

10μH

LT3695

536k

16.2k

40.2k

SYNC

= 12V

GND PGND

470pF 100k

102k

10μF

L = 10µH

f = 800kHz

3695 TA01a

f = 800kHz

0.2

0.4

0.6

0.8

LOAD CURRENT (A)

3695 TA01b

3695f

12 3 4 5 6 7...28

中文翻译

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与LT3695IMSEPBF相关器件

型号	品牌	获取价格	描述	数据表
LT3695IMSETRPBF	Linear	获取价格	1A Fault Tolerant Micropower Step-Down Regulator
LT3697	ADI	获取价格	具电缆压降补偿功能的 USB 5V、2.5A 输出、35V 输入降压型稳压器
LT370	SEOUL	获取价格	GREEN LAMP LED
LT370_1	SEOUL	获取价格	GREEN LAMP LED
LT370Z	SEOUL	获取价格	GREEN OVAL LAMP LED
LT371	SEOUL	获取价格	INFRARED LAMP LED
LT3710	Linear	获取价格	Secondary Side Synchronous Post Regulator
LT3710	ADI	获取价格	副端同步后置稳压器
LT3710EFE	Linear	获取价格	Secondary Side Synchronous Post Regulator
LT3710EFE#PBF	Linear	获取价格	暂无描述

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