Datasheet > LT3430IFE#TRMPBF

LT3430IFE#TRMPBF

更新时间： 2024-11-23 19:59:35

品牌	Logo	应用领域
凌特 - Linear		开关
页数	文件大小	规格书
28页	321K
描述
Switching Regulator

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中文翻译

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技术参数
数据手册

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LT3430IFE#TRMPBF 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	,	Reach Compliance Code：	compliant
风险等级：	5.68	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
Base Number Matches：	1

LT3430IFE#TRMPBF 数据手册

LT3430/LT3430-1

High Voltage, 3A,

200kHz/100kHz Step-Down

Switching Regulators

DESCRIPTION

The LT^®3430/LT3430-1 are monolithic buck switching

regulators that accept input voltages up to 60V. A high ef-

ﬁciency 3A, 0.1Ω switch is included on the die along with

all the necessary oscillator, control and logic circuitry. A

currentmodearchitectureprovidesfasttransientresponse

and excellent loop stability.

FEATURES

■

Wide Input Range: 5.5V to 60V

■

3A Peak Switch Current over All Duty Cycles

■

Constant Switching Frequency:

200kHz (LT3430)

100kHz (LT3430-1)

■

0.1Ω Switch Resistance

Current Mode

■

Special design techniques and a new high voltage process

achieve high efﬁciency over a wide input range. Efﬁciency

is maintained over a wide output current range by using

the output to bias the circuitry and by utilizing a supply

boost capacitor to saturate the power switch. Patented

circuitry* maintains peak switch current over the full duty

cycle range. A shutdown pin reduces supply current to

30µA and a SYNC pin can be externally synchronized with

a logic level input from 228kHz to 700kHz for the LT3430

or from 125kHz to 250kHz for the LT3430-1.

■

Effective Supply Current: 2.5mA

■

Shutdown Current: 30µA

■

1.2V Feedback Reference Voltage

■

Easily Synchronizable

■

Cycle-by-Cycle Current Limiting

■

Small, 16-Pin Thermally Enhanced TSSOP Package

APPLICATIONS

■

Industrial and Automotive Power Supplies

■

Portable Computers

TheLT3430/LT3430-1areavailableinathermallyenhanced

16-pin TSSOP package.

■

Battery Chargers

Distributed Power Systems

■

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

*US Patent # 6498466

TYPICAL APPLICATION

5V, 2A Buck Converter

MMSD914TI

Efﬁciency vs Load Current

100

= 5V

OUT

= 12V

= 42V

0.68µF

BOOST

22µH

OUT

5.5V*

TO 60V

30BQ060

4.7µF

LT3430**

100V

100µF 10V

SOLID

TANTALUM

OFF ON

SHDN

BIAS

15.4k

SYNC

GND

LT3430-1 L = 68µH

LT3430 L =27µH

4.99k

0.5

1.0

1.5

2.0

2.5

LOAD CURRENT (A)

220pF

3.3k

0.022µF

3430 TA02

3430 TA01

*FOR INPUT VOLTAGES BELOW 7.5V, SOME RESTRICTIONS MAY APPLY

** SEE LT3430-1 CIRCUIT IN APPLICATIONS INFORMATION SECTION

34301fa

12 3 4 5 6 7...28

中文翻译

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与LT3430IFE#TRMPBF相关器件

型号	品牌	获取价格	描述	数据表
LT3430IFE-1	Linear	获取价格	High Voltage, 3A,200kHz/100kHz Step-Down Switching Regulators
LT3430IFE-1#PBF	Linear	获取价格	LT3430 - High Voltage, 3A, 200kHz Step-Down Switching Regulator; Package: TSSOP; Pins: 16;
LT3430IFE-1#TR	Linear	获取价格	IC 6.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO16, 4.40 MM, PLASTIC, TSSOP-
LT3430IFE-1#TRPBF	Linear	获取价格	LT3430 - High Voltage, 3A, 200kHz Step-Down Switching Regulator; Package: TSSOP; Pins: 16;
LT3431	Linear Systems	获取价格	100V Synchronous Switching Regulator Controller
LT3431	Linear	获取价格	1.4A, 500kHz Step-Down Switching Regulator
LT3431	ADI	获取价格	高电压、3A、500kHz 降压型开关稳压器
LT3431EFE	Linear	获取价格	High Voltage, 3A,500kHz Step-Down Switching Regulator
LT3431EFE#PBF	Linear	获取价格	LT3431 - High Voltage, 3A, 500kHz Step-Down Switching Regulator; Package: TSSOP; Pins: 16;
LT3431EFE#TR	Linear	获取价格	LT3431 - High Voltage, 3A, 500kHz Step-Down Switching Regulator; Package: TSSOP; Pins: 16;

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