Datasheet > LT3070-1

LT3070-1

更新时间： 2024-11-10 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
28页	954K
描述
5A、低噪声、可编程输出、85mV 压差线性稳压器

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中文翻译

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数据手册

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LT3070-1 数据手册

LT3070-1

5A, Low Noise, Programmable Output,

85mV Dropout Linear Regulator

FEATURES

DESCRIPTION

The LT^®3070-1 is a low voltage, UltraFast™ transient

response linear regulator. The device supplies up to 5A

Output Current: 5A

Dropout Voltage: 85mV Typical

Enable Function Soft-Starts the Reference

of output current with a typical dropout voltage of 85mV.

A 0.01µF reference bypass capacitor decreases output

Digitally Programmable V : 0.8V to 1.8V

OUT

Digital Output Margining: 1ꢀ, ꢁꢀ or 5ꢀ

voltage noise to 25µV

. The LT3070-1 EN pin controls

RMS

Low Output Noise: 25µV

(10Hz to 100kHz)

the reference soft-start behavior in comparison to the

LT3070 which controls the reference soft-start via the

BIAS pin supply voltage. The LT3070-1’s high bandwidth

permits the use of low ESR ceramic capacitors, saving

bulk capacitance and cost. The LT3070-1’s features make

it ideal for high performance FPGAs, microprocessors or

sensitive communication supply applications.

RMS

Parallel Multiple Devices for 10A or More

Precision Current Limit: 20ꢀ

1ꢀ Accuracy Over Line, Load and Temperature

Stable with Low ESR Ceramic Output Capacitors

(15µF Minimum)

High Frequency PSRR: 30dB at 1MHz

VIOC Pin Controls Buck Converter to Maintain Low

Power Dissipation and Optimize Efﬁciency

PWRGD/UVLO/Thermal Shutdown Flag

Current Limit with Foldback Protection

Thermal Shutdown

Output voltage is digitally selectable in 50mV increments

over a 0.8V to 1.8V range. A margining function allows

the user to adjust system output voltage in increments of

1ꢀ, 3ꢀ or 5ꢀ. The IC incorporates a unique tracking

function to control a buck regulator powering the LT3070-

1’s input. This tracking function drives the buck regulator

28-Lead (4mm × 5mm × 0.75mm) QFN Package

tomaintaintheLT3070-1’sinputvoltagetoV

minimizing power dissipation.

+300mV,

OUT

APPLICATIONS

FPGA and DSP Supplies

InternalprotectionincludesUVLO,reverse-currentprotec-

tion, precision current limiting with power foldback and

thermal shutdown. The LT3070-1 regulator is available in

a thermally enhanced 28-lead, 4mm × 5mm QFN package.

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

ASIC and Microprocessor Supplies

Servers and Storage Devices

Post Buck Regulation and Supply Isolation

TYPICAL APPLICATION

Dropout Voltage

0.9V, 5A Regulator

ꢐꢒ0

ꢋ

ꢙ ꢋ

ꢀꢁꢂꢇꢆꢀꢟꢝꢆꢈꢌꢉ

ꢝꢆ

ꢄ0ꢅ

ꢎ

ꢀꢁꢂꢃ

ꢙꢛRꢜꢝ

ꢒꢓꢒꢎ ꢇꢏ ꢈꢓꢡꢎ

ꢐꢑ0

ꢏ0

ꢘ0

ꢔ0

ꢒꢓꢒꢐꢑ

ꢀꢁꢂꢃ

ꢎ

ꢁꢌ

ꢍꢌ

ꢎ

ꢙꢛRꢜꢝ

ꢃꢍꢌꢃꢍ

ꢏꢞꢇ

ꢋꢓꢒꢎ

ꢈꢈ0ꢐꢑ

ꢋ

ꢙ ꢐꢚꢛꢋ

ꢙ ꢔꢚꢔꢋ

ꢜꢝꢈꢞ

ꢎ

0ꢓꢟꢎ

ꢄꢂ

ꢀꢁꢂ

ꢏꢞꢇ

ꢋ

ꢏ0

ꢆꢇꢈ0ꢉ0ꢊꢋ

ꢒꢓꢒꢐꢑꢔ

ꢖꢓꢉꢐꢑꢔ

ꢋ0ꢐꢑꢔ

ꢎ

ꢏꢋ

ꢎ

ꢏꢒ

ꢋ

ꢙ 0ꢚꢛꢋ

ꢙ ꢑꢚꢒꢋ

ꢀꢁꢂ

ꢜꢝꢈꢞ

ꢔꢗꢄR ꢏR ꢗꢉR ꢘꢂꢙꢂꢘꢁꢇꢏRꢃ

ꢠꢂRꢜꢃꢍꢆ

ꢠꢂRꢜꢇꢏꢆ

ꢎꢁꢏꢘ

Rꢍꢑꢢꢀꢣꢙ

ꢜꢌꢝ

ꢋꢕꢑ

0ꢓ0ꢋꢐꢑ

ꢐ

ꢑ

ꢔ

ꢓ

ꢒ

ꢀꢁꢂꢃꢁꢂ ꢄꢁRRꢅꢆꢂ ꢇꢈꢉ

ꢔ0ꢕ0ꢖꢐ ꢂꢈ0ꢐꢗ

ꢈ0ꢉ0ꢊꢋ ꢇꢂ0ꢋꢚ

Rev 0

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与LT3070-1相关器件

型号	品牌	获取价格	描述	数据表
LT3070EUFD	Linear	获取价格	5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator
LT3070EUFD#PBF	Linear	获取价格	LT3070 - 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator; Package: QFN;
LT3070EUFD#TRPBF	Linear	获取价格	LT3070 - 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator; Package: QFN;
LT3070EUFDPBF	Linear	获取价格	5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator
LT3070EUFDTR	Linear	获取价格	5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator
LT3070EUFDTRPBF	Linear	获取价格	5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator
LT3070IUFD	Linear	获取价格	5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator
LT3070IUFD#PBF	Linear	获取价格	LT3070 - 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator; Package: QFN;
LT3070IUFD#TR	Linear	获取价格	IC VREG 0.8 V-1.8 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.15 V DROPOUT, PQCC28, 4 X 5 MM, 0
LT3070IUFDPBF	Linear	获取价格	5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator

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