Datasheet > LT3083

LT3083

更新时间： 2024-09-26 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		电阻器稳压器
页数	文件大小	规格书
28页	1071K
描述
可调 3A 单电阻器低压差线性稳压器

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LT3083 数据手册

LT3083

Adjustable 3A

Single Resistor Low

Dropout Regulator

FEATURES

DESCRIPTION

Outputs May be Paralleled for Higher Current and

The LT^®3083 is a 3A low dropout linear regulator that can

be paralleled to increase output current or spread heat

on surface mounted boards. Architected as a precision

current source and voltage follower, this new regulator

finds use in many applications requiring high current,

adjustability to zero, and no heat sink. The device also

brings out the collector of the pass transistor to allow

low dropout operation—down to 310mV—when used

with multiple supplies.

Heat Spreading

Output Current: 3A

Single Resistor Programs Output Voltage

50µA Set Pin Current: 1% Initial Accuracy

Output Adjustable to 0V

Low Output Noise: 40µV

(10Hz to 100kHz)

RMS

Wide Input Voltage Range: 1.2V to 23V

(DD-Pak and TO-220 Packages)

Low Dropout Voltage: 310mV

A key feature of the LT3083 is the capability to supply

a wide output voltage range. By using a reference cur-

rent through a single resistor, the output voltage is pro-

grammed to any level between zero and 23V (DD-PAK

and TO-220 packages). The LT3083 is stable with 10µF of

capacitance on the output, and the IC is stable with small

ceramic capacitors that do not require additional ESR as

is common with other regulators.

<1mV Load Regulation

<0.001%/V Line Regulation

Minimum Load Current: 1mA

Stable with Minimum 10µF Ceramic Capacitor

Current Limit with Foldback and Overtemperature

Protection

Available in 16-Lead TSSOP, 12-Lead 4mm × 4mm

DFN, 5-Lead TO-220 and 5-Lead Surface Mount

DD-PAK Packages

Internal protection circuitry includes current limiting and

thermal limiting. The LT3083 is offered in the 16-lead

TSSOP (with an exposed pad for better thermal char-

acteristics), 12-lead 4mm × 4mm DFN (also with an

exposed pad), 5-lead TO-220, and 5-lead surface mount

DD-PAK packages.

APPLICATIONS

High Current All Surface Mount Supply

High Efficiency Linear Regulator

Post Regulator for Switching Supplies

Low Parts Count Variable Voltage Supply

Low Output Voltage Power Supplies

All registered trademarks and trademarks are the property of their respective owners. .

TYPICAL APPLICATION

Set Pin Current Distribution

1.5V to 0.9V at 3A Supply (Using 3.3V V_CONTROL

)

ꢎ ꢖ ꢃꢅꢂꢗ

CONTROL

3.3V

4.7µF

10µF

CONTROL

= 0.9V

= 3A

LT3083

OUT

MAX

OUT

1.5V

10µF

SET

MIN

909Ω

3083 TA01a

*OPTIONAL FOR

MINIMUM 1mA LOAD

REQUIREMENT

18.2k

SET

0.1µF

ꢀꢁ

ꢀꢁ.ꢂ

ꢂꢅ

ꢂꢅ.ꢂ

ꢂꢃ

ꢊꢋꢇ ꢌꢍꢎ ꢏꢐRRꢋꢎꢇ ꢑꢍꢊꢇRꢍBꢐꢇꢍꢒꢎ ꢓꢔꢈꢕ

ꢄꢅꢆꢄ ꢇꢈꢅꢃꢉ

Rev. B

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与LT3083相关器件

型号	品牌	获取价格	描述	数据表
LT3083EDF	Linear	获取价格	Adjustable 3A Single Resistor Low Dropout Regulator
LT3083EDF#PBF	Linear	获取价格	LT3083 - Adjustable 3A Single Resistor Low Dropout Regulator; Package: DFN; Pins: 12; Temp
LT3083EDF#TRPBF	Linear	获取价格	暂无描述
LT3083EFE	Linear	获取价格	Adjustable 3A Single Resistor Low Dropout Regulator
LT3083EFE#PBF	Linear	获取价格	LT3083 - Adjustable 3A Single Resistor Low Dropout Regulator; Package: TSSOP; Pins: 16; Te
LT3083EFE#TR	Linear	获取价格	IC VREG ADJUSTABLE POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO16, 4.40 MM, PLASTIC, TSSOP
LT3083EFE#TRPBF	Linear	获取价格	LT3083 - Adjustable 3A Single Resistor Low Dropout Regulator; Package: TSSOP; Pins: 16; Te
LT3083EQ	Linear	获取价格	Adjustable 3A Single Resistor Low Dropout Regulator
LT3083ET	Linear	获取价格	Adjustable 3A Single Resistor Low Dropout Regulator
LT3083ET#PBF	Linear	获取价格	暂无描述

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